ACC and braking guard unavailable

[RaDium]

Hello all,

I tried so many websites and posts but with no actual help. Maybe someone here had similar problem or can help to solve my issue.
I have A6 Avant S-line 4G C7 150kw quattro 2014. i love it but one issue is really killing me. It was okay like 6 months ago but started to pop out that my acc and braking guard is unavailable and as it appeared it went away in 1 2 or 3 days by itself...situation became critical when i have it like 28 days from 30 :( i noticed that it mostly happens when driver doors are opened while engine is running. then i wont dissapear for 1-4 weeks...i bought obdeleven to determine issue and of course to code few things. i am not sure how to post full log but i have no issues anywhere except 2:

 
13 Adaptive Cruise Control

System description: ACC3         
    Software number: 4G0907561A 
    Software version: 0410
    Hardware number: 4G0907561  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContrAU57X
    ODX version: 002010
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:00
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D00100285386A100EFFFE100F0000

8B Adaptive Cruise Control 2

    System description: ACC3         
    Software number: 4G0907541A 
    Software version: 0400
    Hardware number: 4G0907541  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContr2AU57X
    ODX version: 002008
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:06
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D0011028538E1100EFFFF100F0000

i understand that it might be switch in doors but i would like to be sure for 100% before going to dealer since it is ultra expensive and my situation is quite bad at the moment...i definitely do not want to go there and get half car changed because they sometimes have no idea, while ill be paying for everything and my problem wont be solved....

does anyone have an idea?
any help is much appreciated.

[DaddyO]

Hello all,

I tried so many websites and posts but with no actual help. Maybe someone here had similar problem or can help to solve my issue.
I have A6 Avant S-line 4G C7 150kw quattro 2014. i love it but one issue is really killing me. It was okay like 6 months ago but started to pop out that my acc and braking guard is unavailable and as it appeared it went away in 1 2 or 3 days by itself...situation became critical when i have it like 28 days from 30 :( i noticed that it mostly happens when driver doors are opened while engine is running. then i wont dissapear for 1-4 weeks...i bought obdeleven to determine issue and of course to code few things. i am not sure how to post full log but i have no issues anywhere except 2:

 
13 Adaptive Cruise Control

System description: ACC3         
    Software number: 4G0907561A 
    Software version: 0410
    Hardware number: 4G0907561  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContrAU57X
    ODX version: 002010
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:00
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D00100285386A100EFFFE100F0000

8B Adaptive Cruise Control 2

    System description: ACC3         
    Software number: 4G0907541A 
    Software version: 0400
    Hardware number: 4G0907541  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContr2AU57X
    ODX version: 002008
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:06
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D0011028538E1100EFFFF100F0000

i understand that it might be switch in doors but i would like to be sure for 100% before going to dealer since it is ultra expensive and my situation is quite bad at the moment...i definitely do not want to go there and get half car changed because they sometimes have no idea, while ill be paying for everything and my problem wont be solved....

does anyone have an idea?
any help is much appreciated.

Not an expert by any means, but perhaps this thread will be helpful....

https://forums.ross-tech.com/showthr...vailable-Error

[SpectreGadget]

Hello all,

I tried so many websites and posts but with no actual help. Maybe someone here had similar problem or can help to solve my issue.
I have A6 Avant S-line 4G C7 150kw quattro 2014. i love it but one issue is really killing me. It was okay like 6 months ago but started to pop out that my acc and braking guard is unavailable and as it appeared it went away in 1 2 or 3 days by itself...situation became critical when i have it like 28 days from 30 :( i noticed that it mostly happens when driver doors are opened while engine is running. then i wont dissapear for 1-4 weeks...i bought obdeleven to determine issue and of course to code few things. i am not sure how to post full log but i have no issues anywhere except 2:

 
13 Adaptive Cruise Control

System description: ACC3         
    Software number: 4G0907561A 
    Software version: 0410
    Hardware number: 4G0907561  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContrAU57X
    ODX version: 002010
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:00
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D00100285386A100EFFFE100F0000

8B Adaptive Cruise Control 2

    System description: ACC3         
    Software number: 4G0907541A 
    Software version: 0400
    Hardware number: 4G0907541  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContr2AU57X
    ODX version: 002008
    Long coding: 7E04010202

    Trouble codes: 
        C107629 - Door Contact Switch Implausible signal
            static
                Date: 2019-02-12 05:31:06
                Mileage: 164096 km
                Priority: 2
                Malfunction frequency counter: 2
                Unlearning counter: 218
                Dynamic environmental data: 028D0011028538E1100EFFFF100F0000

i understand that it might be switch in doors but i would like to be sure for 100% before going to dealer since it is ultra expensive and my situation is quite bad at the moment...i definitely do not want to go there and get half car changed because they sometimes have no idea, while ill be paying for everything and my problem wont be solved....

does anyone have an idea?
any help is much appreciated.

It can be because of a number of reasons. Really need to get a reading from VCDS to see exactly what is causing it.


Sent from my iPad using Tapatalk

[VR2V8]

When this happened to me, it was simply because one of the sensors in the front bumper came loose. Snapped it back in and all was well.

[jrsAudiA6]

Based on what your VCDS is indicating it does look like a door switch may be bad. I had this condition happen a few times early in my ownership of my A6 but was able to correct it by shutting the engine off and restarting. Eventually I had your warning and I could not get rid of it. In my case, based on VCDS, I had a failed radar sensor passenger side. That is expensive to replace, so if your issue is a door switch failure count your blessings.

[RaDium]

Thank you for replies.

I will post full log after work today and also check sensors in front but i think they are all good.

[RaDium]

Based on what your VCDS is indicating it does look like a door switch may be bad. I had this condition happen a few times early in my ownership of my A6 but was able to correct it by shutting the engine off and restarting. Eventually I had your warning and I could not get rid of it. In my case, based on VCDS, I had a failed radar sensor passenger side. That is expensive to replace, so if your issue is a door switch failure count your blessings.

I tried this like 17 times :D it still did not get away :(

[RaDium]

Not an expert by any means, but perhaps this thread will be helpful....

https://forums.ross-tech.com/showthr...vailable-Error

Hi, i tried it, my doors are okay there is no difference between left and right front doors also i tried gently and also very fast but result was same.

[RaDium]

Here is my full log, i noticed few new errors which did not appear before regarding positioning, i also visually checked front acc sensors and tried to move them but they are in correct position, maybe error was because i was very close to object in front of car. anyway all sensors in front were clear from dirt without any damage windshield sensors are clear and without damage too.

OBDeleven data log

Date: 2019-02-18 20:48

    VIN: WAUZZZ4G4EN164237
    Car: Audi A6
    Year: 2014
    Body type: Avant
    Engine: CLAA 150 kW (204 HP) 3.0 l
    Mileage: 164463 KM

---------------------------------------------------------------
01 Engine

    System description: 3.0TDI EDC17 
    Software number: 4G0907311E 
    Software version: 0003
    Hardware number: 4G0907401  
    Hardware version: H41
    ODX name: EV_ECM30TDI0114G0907311E
    ODX version: 001003
    Long coding: 12254012046601020000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
02 Transmission

    System description: 0B5 30 TDIRdW
    Software number: 4G5927156  
    Software version: 0003
    Hardware number: 0B5927156K 
    Hardware version: H02
    ODX name: EV_TCMDL501021
    ODX version: 001015
    Long coding: 000001

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
03 Brakes

    System description: ESP PREMIUM  
    Software number: 4G0907379M 
    Software version: 0450
    Hardware number: 4G0907379M 
    Hardware version: H09
    Serial number: --------------
    ODX name: EV_ESPPremiAU57X
    ODX version: 004039
    Long coding: 07A69F01E065F980DB00

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
04 Steering Angle Sender

---------------------------------------------------------------
05 Kessy

    System description: BCM2 2.0     
    Software number: 4H0907064EN
    Software version: 0521
    Hardware number: 4H0907064EN
    Hardware version: H36
    Long coding: 01A93006000000000000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
08 Air Conditioning

    System description: KLIMA 4 ZONEN
    Software number: 4G0820043AM
    Software version: 0097
    Hardware number: 4G0820043AM
    Hardware version: H14
    Serial number: 14051400040172
    ODX name: EV_AirCondiComfoUDS
    ODX version: 004003
    Long coding: 3602007825

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
09 Central Electrics

    System description: BCM1 2.0     
    Software number: 4H0907063CF
    Software version: 0130
    Hardware number: 4H0907063F 
    Hardware version: H12
    Serial number: 00000001877705
    Long coding: 0200201050B48FE2C1810083000019080F9CC7082E080201000008406101

    Subsystems: 
        System description: WWS57X 140506
        Software number: 4G1955119  
        Software version: 0080
        Hardware version: H37
        Serial number:         140508082041
        Long coding: 0045F7

        System description: G397_RLFS    
        Software number: 8U0955559B 
        Software version: 0002
        Hardware version: H06
        Serial number: 22621975            
        Long coding: 02006D

        System description: E1 - LDS     
        Software number: 4G0941531S 
        Software version: 0044
        Hardware version: H07
        Serial number: 02 05 2014  00000443

        System description: AQ_Hum_Sensor
        Software number: 4H0907658  
        Software version: 0003
        Hardware version: H03
        Serial number: 5D580227000000000001

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
10 Parking Assistance 2

    System description: PARKHILFE ACC
    Software number: 4H0919475AA
    Software version: 0083
    Hardware number: 4H0919475AG
    Hardware version: H01
    Serial number: 61061413202738
    ODX name: EV_EPHVA18AU57X0000
    ODX version: 004009
    Long coding: A8EB08

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
13 Adaptive Cruise Control

    System description: ACC3         
    Software number: 4G0907561A 
    Software version: 0410
    Hardware number: 4G0907561  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContrAU57X
    ODX version: 002010
    Long coding: 7E04010202

    Trouble codes: 
        C110B49 - Adaptive cruise control sensor No signal
            static
        C107629 - Door Contact Switch Implausible signal
            Intermittent
        U111300 - Function limitation due to received malfunction value
            static


---------------------------------------------------------------
15 Airbag

    System description: Airbag10.43  
    Software number: 4H0959655C 
    Software version: 0040
    Hardware number: 4H0959655C 
    Hardware version: H43
    Serial number: 003JG00HZAW3
    ODX name: EV_AirbaAU10BPAAU64X
    ODX version: 001014
    Long coding: 30323436313330303335554A304C34473053

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
16 Steering Column Electronics

    System description: Lenks.Modul  
    Software number: 4H0953568G 
    Software version: 0005
    Hardware number: 4H0953568G 
    Hardware version: H04
    Serial number: 90372NE80000Y 
    Long coding: 0000DD

    Subsystems: 
        System description: E221 - MFL   
        Software number: 4G0951528D 
        Software version: 0010
        Hardware version: H09
        Serial number: 24 04 2014  33121667

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
17 Dash Board

    System description: TDieRdwAcc   
    Software number: 4G8920933B 
    Software version: 0622
    Hardware number: 4G8920933B 
    Hardware version: H58
    Serial number: 6581405145960382
    ODX name: EV_RBD4K
    ODX version: 004048
    Long coding: 138F11000F550008000000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
19 Gateway

    System description: J533--Gateway
    Software number: 4G0907468AD
    Software version: 0050
    Hardware number: 4G0907468AC
    Hardware version: H13
    Serial number: 00000001388903
    ODX name: EV_GatewPkoUDS
    ODX version: 001019
    Long coding: 00CD077D00

    Subsystems: 
        System description: J367-BDMHella
        Software number: 8T0915181  
        Software version: 8041
        Hardware version: H03
        Serial number: 6386133303          

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
28 Climate Control Unit Rear

    System description: KLIMA FOND   
    Software number: 4G0919158M 
    Software version: 0097
    Hardware number: 4G0919158M 
    Hardware version: H08
    Serial number: 12051400040638
    ODX name: EV_ClimaContrUnitRearUDS
    ODX version: 004002
    Long coding: 20

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
33 OBD-II


    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
3B Sensor Electronics

    System description: SARA 6D      
    Software number: 4G0907637K 
    Software version: 0056
    Hardware number: 4G0907637F 
    Hardware version: H03
    Serial number: EJ1BPA82076ZHQ����������
    ODX name: EV_SARA2
    ODX version: 005012

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
3C Lane Change Assistant

    System description: J769  SWA MasterH05
    Software number: 4G0907566D
    Software version: 0060
    Hardware number: 4G0907566
    Serial number: 6PZ 010 287-03
    Coding: 0000102

    Subsystems: 
        System description: J770  SWA Slave H05
        Software number: 4G0907568D
        Software version: 0060

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
42 Door Electronics Driver Side

    System description: TSG FA       
    Software number: 4G8959793H 
    Software version: 0507
    Hardware number: 4G8959793F 
    Hardware version: H04
    Serial number: --------------
    Long coding: 011C16005C00628002080013

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
44 Steering Assistance

    System description: RCEPS        
    Software number: 4G0909144L 
    Software version: 0010
    Hardware number: 4G0909144G 
    Hardware version: H40
    Serial number: 0030543825
    ODX name: EV_RCEPS
    ODX version: 009008
    Long coding: 101001010000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
46 Central Module Comfort System

    System description: BCM2 2.0     
    Software number: 4H0907064EN
    Software version: 0521
    Hardware number: 4H0907064EN
    Hardware version: H36
    Serial number: 0335719295    
    Long coding: 0100062820B93080832009040C010F470000000000000000000000000000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
52 Door Electronics Passenger Side

    System description: TSG BF       
    Software number: 4G8959792J 
    Software version: 0507
    Hardware number: 4G8959792G 
    Hardware version: H03
    Serial number: --------------
    Long coding: 011C16005E00628002080002

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
53 Parking Brake

    System description: EPB-4        
    Software number: 4H0907801H 
    Software version: 0015
    Hardware number: 4H0907801A 
    Hardware version: H04
    Serial number: 00000001578534
    ODX name: EV_ParkiBrake
    ODX version: 001028

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
55 Headlight Regulation

    System description: ....AFS13....
    Software number: 4H4907357C 
    Software version: 0020
    Hardware number: 4H4907357A 
    Hardware version: H01
    Serial number: 140506-0004-0501  
    ODX name: EV_AdvanFrontSyste
    ODX version: 005001
    Long coding: 1122A633F91AEB00

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
56 Radio

    System description: Radio U DAB  
    Software number: 4G0035061S 
    Software version: 0154
    Hardware number: 4G0035061  
    Hardware version: H60
    Serial number: 109E30E7926197
    Long coding: 010103020100000001

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
5F Information Control Unit

    System description: H-BNT-EU     
    Software number: 4G0035670Q 
    Software version: 1034
    Hardware number: 4G0035670J 
    Hardware version: H53
    Serial number: 190EA0E7585959
    Long coding: 050100010003A9EF3DB0CF3E00000003080001000000000000

    Subsystems: 
        System description: EUR 2018     
        Software number: 8R0060884FC
        Software version: 2601

        System description: DU8 C7 SV    
        Software number: 4G0919605C 
        Software version: 0021
        Hardware version: H43
        Serial number: AUZ8ZDED004KLSG     

        System description: E380 BDT C7  
        Software number: 4G1919610C 
        Software version: 0204
        Hardware version: H11
        Serial number: 90349NEE00077       

        System description: CD-Database  
        Software number: 8R0060961F 
        Software version: 5571

    Trouble codes: 
        03276 - Checking software version management
            static
        03623 - Release code faulty
            static


---------------------------------------------------------------
62 Door Electronics Rear Left

    System description: TSG HL       
    Software number: 4G8959795J 
    Software version: 0507
    Hardware number: 4G8959795G 
    Hardware version: H03
    Serial number: --------------
    Long coding: 010814004000628002080002

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
6C Camera System Rear View

    System description: SG Rueckfahrkamera
    Software number: 4G0907441B
    Software version: 0061
    Hardware number: 4H0907441
    Serial number: 525 PA8J44G5RU
    Coding: 1080005

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
6D Deck Lid Control Unit

    System description: HDSG-Modul   
    Software number: 4G9959107B 
    Software version: 0143
    Hardware number: 4G9959107A 
    Hardware version: H03
    Serial number: 128401116
    ODX name: EV_HDSGAu572
    ODX version: 001022
    Long coding: 097205C010

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
72 Door Electronics Rear Right

    System description: TSG HR       
    Software number: 4G8959795J 
    Software version: 0507
    Hardware number: 4G8959795G 
    Hardware version: H03
    Serial number: --------------
    Long coding: 010814004000628002080002

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
85 On-Board Camera

    System description: DPC-SG       
    Software number: 4G0907217A 
    Software version: 0038
    Hardware number: 4H0907217A 
    Hardware version: H26
    Serial number: 26213002542100000000348035
    ODX name: EV_OnBoardCamerDPC
    ODX version: 001007
    Long coding: 6E060000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
8B Adaptive Cruise Control 2

    System description: ACC3         
    Software number: 4G0907541A 
    Software version: 0400
    Hardware number: 4G0907541  
    Hardware version: H19
    Serial number: 00000000000000
    ODX name: EV_AdaptCruisContr2AU57X
    ODX version: 002008
    Long coding: 7E04010202

    Trouble codes: 
        C110300 - Adaptive cruise control sensor misadjusted
            static
        C107629 - Door Contact Switch Implausible signal
            Intermittent


---------------------------------------------------------------
8E Image Processing Electronics

    System description: BV-SG        
    Software number: 4G0907107E 
    Software version: 0041
    Hardware number: 4H0907107  
    Hardware version: H32
    Serial number: 00500012130514768601850000
    ODX name: EV_BC7
    ODX version: 001001
    Long coding: 04C0B9181111

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
8F Pretensioner Front Left

    System description: RGS-VL       
    Software number: 4H0980945B 
    Software version: 0080
    Hardware number: 4H0980945C 
    Hardware version: H13
    ODX name: EV_RGS_L
    ODX version: 002004
    Long coding: 0066E608031F0376070308014240C2010000

    Trouble codes: 
        No trouble codes found

---------------------------------------------------------------
90 Pretensioner Front Right

    System description: RGS-VR       
    Software number: 4H0980946B 
    Software version: 0080
    Hardware number: 4H0980946C 
    Hardware version: H13
    ODX name: EV_RGS_R
    ODX version: 002004
    Long coding: 0066E608031F0376070308014240C2010000

    Trouble codes: 
        No trouble codes found

[RaDium]

Anyone encountered this or similar issues?

[agent47]

Anyone encountered this or similar issues?

Had the same problem on my 2016 A6. Dealership replaced the door contact switch .

Sent from my SM-N950U using Tapatalk

[RaDium]

Had the same problem on my 2016 A6. Dealership replaced the door contact switch .

Sent from my SM-N950U using Tapatalk

Thank you very much for info. do you know part number of that switch? how much did you pay?

[Rural Juror]

I had this happen and for a couple of years no dealer or shop could diagnose it until last year. Previous attempts included several sensor/camera recalibrations, sensor cleanings, reboots, software updates, code clearings, but no luck. Finally got it solved after learning the previous owner of my car had replaced the windshield with non-OEM glass and it was causing an error in the forward-facing camera. After expressing a great deal of skepticism, I gave in and had the otherwise-perfectly-good windshield replaced with OEM glass with another sensor/camera recalibration, and like magic it has worked perfectly ever since (with the exception of when a sensor is obscured by mud or snow). This problem nearly drove me crazy because it was not a solution that could be directly indicated by an error code and as I tried and tried to get it diagnosed, most of the people I took it to finally just gave up.

Everyone is right here in that the ACC system can be affected by several other system errors, so it truly could be a number of things, but it is worth it to check out the windshield. Good luck—

[SpectreGadget]

Start with having the codes read. Should point you in the right direction. For me, it was the video cable between the windshield camera and image processor module that had to be replaced.

[RaDium]

I had this happen and for a couple of years no dealer or shop could diagnose it until last year. Previous attempts included several sensor/camera recalibrations, sensor cleanings, reboots, software updates, code clearings, but no luck. Finally got it solved after learning the previous owner of my car had replaced the windshield with non-OEM glass and it was causing an error in the forward-facing camera. After expressing a great deal of skepticism, I gave in and had the otherwise-perfectly-good windshield replaced with OEM glass with another sensor/camera recalibration, and like magic it has worked perfectly ever since (with the exception of when a sensor is obscured by mud or snow). This problem nearly drove me crazy because it was not a solution that could be directly indicated by an error code and as I tried and tried to get it diagnosed, most of the people I took it to finally just gave up.

Everyone is right here in that the ACC system can be affected by several other system errors, so it truly could be a number of things, but it is worth it to check out the windshield. Good luck—

Thank you very much for your response, this will be my second shot, first one is door switch. hopefully i wont be without luck like you.

[RaDium]

Start with having the codes read. Should point you in the right direction. For me, it was the video cable between the windshield camera and image processor module that had to be replaced.

You mean some specific code readings? i have only obdeleven. i know vcds is better for in depth readings but i wanted something more portable, fast and easy to use, just plug in use my phone and done. Can you please give me some advice how you ment those readings?

[SpectreGadget]

You mean some specific code readings? i have only obdeleven. i know vcds is better for in depth readings but i wanted something more portable, fast and easy to use, just plug in use my phone and done. Can you please give me some advice how you meant those readings?

Sorry, that was more of a general statement for others that come along. ACC & Audi Brake becoming unavailable can be for multiple reasons. And I missed your codes early in the thread. That's the second time I've heard of the door contact switch causing that. Weird that Audi would add that as a dependency for ACC and brake guard.

[skikarlg]

Having the same code 154624 Door Contact Switch. Using Ross tech. Ran Output test on every door without any faults or irregularities. When ACC - Brake guard 1st begin to not function I turned the rear drivers side door child latch a few times and then restaredt car.... problem solved. Several months later and now my trick doesn't work. Even went so far as to buy a used door latch and installed it but no luck. Anyone have suggestions as to how to trace which Door Contact Switch is failing?

[Phantom75]

When this happened to me, it was simply because one of the sensors in the front bumper came loose. Snapped it back in and all was well.

Came here to post this. I've had two cars, incidentally not Audi, where one of the parking sensors in the bumper causes codes and issues with other systems. In one case it was the adaptable cruise control. In another case, it was even throwing codes for the awd diff system even though things were working fine. These modern cars are very voltage sensitive, so when components go bad, and or the batter gets funky, it can cause bugs not unlike the operating system in a computer. I mean cars are basically computers now. I am not an expert on automatic electronics at all, I've just had bugs a couple of times.

Sometimes simply making sure the battery terminals are tight and not corroded can help, and or doing a disconnect and reconnect of the battery will cure minor odd electrical issues. I'm not aware of what would get reset by doing that on an Audi. On my Porsche I have to use a trickle charger so I don't lose complete power and have to set up a bunch of the cars systems from scratch. Good luck!

[KSGU]

I know IÂ’m a little late on the reply but hope I can answer someone elseÂ’s question looking for a solution. I had this same problem on my 2013 A6. Mine also had the fault for the door contact switch. I realized that the cruise would work sometimes and then not at other times. The times it would stop working would only occur once I opened the door and got out or back in. I found that if I opened and closed the door a few times, (sometimes of few times meant 20x) the cruise would start working again. I went to the dealer and bought the part. (Drivers door) There is a specific door latch for cars with acc. A door latch from a car without acc will not work. I removed the old part and visually inspected everything. I even went as far as taking it completely apart and testing each micro switch. I could not figure out what was wrong with it. Every little switch worked. I then plugged in the electrical plugs with the latch out of the door and checked to see if it would work. The car said acc and braking guard not available. I then repeated the exact same test with the new door latch from the dealer. The error went away. I have had the new latch in the car for 8 months and have not a problem since. It was also a realitivly easy part to change on my own. Anyone with a little knowledge on taking things apart should be able to figure out how to put a new switch in.

[pfar54]

Hopefully this helps someone. I was having this issue after several things (windshield and water pump replacement). A non OEM windshield will definitely throw the error, but I had this issue after my water pump too. It turns out the dealer didn't attach a vacuum line properly. I would check that if you are getting this error.

[RaDium]

I know IÂ’m a little late on the reply but hope I can answer someone elseÂ’s question looking for a solution. I had this same problem on my 2013 A6. Mine also had the fault for the door contact switch. I realized that the cruise would work sometimes and then not at other times. The times it would stop working would only occur once I opened the door and got out or back in. I found that if I opened and closed the door a few times, (sometimes of few times meant 20x) the cruise would start working again. I went to the dealer and bought the part. (Drivers door) There is a specific door latch for cars with acc. A door latch from a car without acc will not work. I removed the old part and visually inspected everything. I even went as far as taking it completely apart and testing each micro switch. I could not figure out what was wrong with it. Every little switch worked. I then plugged in the electrical plugs with the latch out of the door and checked to see if it would work. The car said acc and braking guard not available. I then repeated the exact same test with the new door latch from the dealer. The error went away. I have had the new latch in the car for 8 months and have not a problem since. It was also a realitivly easy part to change on my own. Anyone with a little knowledge on taking things apart should be able to figure out how to put a new switch in.

Thank you for your reply.
Can you also post part number of new switch which you bought? Did you follow any instruction or video when changing? what was the cost and how much time did it take?

thank you

[Nemesis tl-s]

Did you ever get the part number for the for door latch?

[RaDium]

Did you ever get the part number for the for door latch?

Hello, yes it was 4g1837015 - i bought new one from the dealer for 180€, replaced old latch aaaaaand everything is working again :)

[TDItis]

Old thread, and probably many on ACC like it, but bumping this one.

Got a 2014 Audi S7 a couple months ago, ACC and Braking guard unavailable error. I really have gotten so used to using cruise control, I can't live without it. Took it to Audi dealer on August 25th, got it back October 30th - issue not fixed but charged thousands of $$.

"You need new sensor brackets and calibration" - purchased, installed - same error

"Oh we think you need a new door lock mechanism" - purchased, installed - same error

"This door electrical harness looks corroded you need to replace that" - purchased, installed - same error

Dealership then says, and obviously this is not literal, but......."Thank you for funding our blind searching, we give up your car is ready for pickup". I pick it up, still same error.


Very frustrated to spend so much, have car there for literally 2 months, and issue persists. Windshield? Would be another guess. Door latch (is this different than door lock???), would be another guess.

Are there any software gurus that can delete or bypass all the complimentary systems ACC needs to check to be successful? Any way to hack in standard (non-automatic) cruise control functionality?

My OBDII bluetooth scanner shows ACC 2 Code 154624 and ACC Code 154624 (one code for each sensor? Not sure why it shows twice.

Also see "Door electronics Drive Side Code 1482 Status: ACTIVE/STORED - no description available".

No VCDS or OBDEleven software - worth it? Is this something I can do as a very shadetree "mechanic"?



Full disclosure: vehicle has a rebuilt title since it was in a sideswipe accident - driver side damage but no airbags or engine bay intrusions. Just replaced fenders and both doors, doors were sourced from A7 and all S7 parts and trim swapped over. Could definitely be contributing, but not in a way that I or the dealer understands how. I would hope the computer scan would be able to show exactly what module is preventing ACC from working, but I guess it's not that specific.

[Wilbur_RS7]

Get OBDEleven. It's very useful. Clear codes, reset service intervals, coding batteries, etc.

I have a problem every other month with the ACC unavailable. (Mine is even more annoying in the fact that the warning chime beeps every 20 seconds. After a day or 2 of going insane, it'll start working again.)

It stored a code in OBDEleven for the GPS Antenna open circuit. I've read on a few other threads that this could be the cause. So I bought a new one and plan on changing it the next time it stops working.

[Audisthesia]

This is why I never pay for work until I check it. If I pay you to fix something, you aren't getting paid unless it's fixed. I do not know all your circumstances, but they definitely shouldn't be charging you for repairing a problem that they didn't fix.

[TDItis]

Get OBDEleven. It's very useful. Clear codes, reset service intervals, coding batteries, etc.

I have a problem every other month with the ACC unavailable. (Mine is even more annoying in the fact that the warning chime beeps every 20 seconds. After a day or 2 of going insane, it'll start working again.)

It stored a code in OBDEleven for the GPS Antenna open circuit. I've read on a few other threads that this could be the cause. So I bought a new one and plan on changing it the next time it stops working.

So it's RossTech or OBDELeven - you prefer OBDEleven? Any specific pros/cons for each or do they both basically do the same thing.

[Mikes281]

I had this same issue for a few months. Finally took it to Audi for a full calibration. After hearing tons of stories about the charge for this, I was happy to find it they charged a flat fee of $495 for the calibration. Took a day and everything is back to good again.

This was Audi Meadowlands (NJ), part of the Benzel Busch Group.

[Alabama]

So it's RossTech or OBDELeven - you prefer OBDEleven? Any specific pros/cons for each or do they both basically do the same thing.

Audisthesia owns both and has written about this. Search those posts. I believe the bottom line is that RossTech costs more but gives more functions. A user needs to decide how much function the user needs.

By the way, you write that the car was in an accident so bad it was totaled (I assume that's what you mean by "rebuilt title"), yet only sustained essentially cosmetic damage? I'm confused and wonder if the damage was more severe than you might have been told.

[THCarpenter]

Since we are doing this full term:

hit me on Friday, thought a restart would be fine. Was using ACC on I-95 North passing through VA and it faulted out. No other issues showing up.

I used to get these after the lowering links install, but it also gave me a Ride Height fault, and headlight fault. Now, its just ACC and Brake Guard Unavailable.

Any Thoughts?

Wednesday,03,November,2021,16:36:52:35848
VCDS Version: Release 21.9.0 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 8B: Adaptive Cruise 2 Labels: 4H0-907-561.clb
Control Module Part Number: 4G0 907 541 B HW: 4G0 907 541
Component and/or Version: ACC3 H21 0053
Software Coding: 7E01010102
Work Shop Code: WSC 02391 785 00200
ASAM Dataset: EV_AdaptCruisContr2AU57X 002012 (AU57)
ROD: EV_AdaptCruisContr2AU57X_002.rod
VCID: 2757CEFA5E611CB120-8072
Fault Codes have been Erased

3 Faults Found:
88064 - Sensor for Automatic Distance Regulation; Incorrectly Positioned
C1103 00 [009] - -
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 189
Mileage: 147437 km
Date: 2021.11.03
Time: 16:36:38

Control Module temperature: 22 °C
Voltage terminal 15: 12.067 V
Velocity_vehicle_reference: -0.00 m/s
Longitudinal_acceleration_vehicle_reference: 0.00 m/s²

88320 - Sensor for Automatic Distance Regulation; Incorrectly Positioned
C1103 00 [009] - -
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 189
Mileage: 147437 km
Date: 2021.11.03
Time: 16:36:38

Control Module temperature: 22 °C
Voltage terminal 15: 12.067 V
Velocity_vehicle_reference: -0.00 m/s
Longitudinal_acceleration_vehicle_reference: 0.00 m/s²

12032 - Sensor for Automatic Distance Regulation; Incorrectly Positioned
C1103 00 [009] - -
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 189
Mileage: 147437 km
Date: 2021.11.03
Time: 16:36:38

Control Module temperature: 22 °C
Voltage terminal 15: 12.067 V
Velocity_vehicle_reference: -0.00 m/s
Longitudinal_acceleration_vehicle_reference: 0.00 m/s²

[TDItis]

Audisthesia owns both and has written about this. Search those posts. I believe the bottom line is that RossTech costs more but gives more functions. A user needs to decide how much function the user needs.

By the way, you write that the car was in an accident so bad it was totaled (I assume that's what you mean by "rebuilt title"), yet only sustained essentially cosmetic damage? I'm confused and wonder if the damage was more severe than you might have been told.

It was more than cosmetic, some suspension parts needed replacement, and yes the damage can be beyond what the eye can see (I have all the photos of the car from the auto auction before repairs).

Update on car: This past saturday I called dealer to see if car was ready (it's been there 2 months, I was checking in) and they say "it's done, come pick up!". I admit I was skeptical, but I picked it up. Still saw the ACC not available error and was pissed. On Tuesday the lead advisor, who was not working on Saturday, called and asked "did you pick the car up?" (confidence inspiring) - "yes, I picked it up but it's not done". He said yup, not done, allowing you to pick up was a mistake, please bring back. Soooo.....on Tuesday it went back to dealer. No word since.

During the brief time I had it the only ACC related error code I could see on my Blue Driver OBDII reader is the 154624 code. Before I took it in the first time, there were other ACC related codes that the dealer has already addressed through calibration and other means. So....still some hope they can get this fixed. At great expense.

[Audibellybutton]

Hello, yes it was 4g1837015 - i bought new one from the dealer for 180€, replaced old latch aaaaaand everything is working again :)

Just got this annoying error on my c7 s6. Acc was working fine then sometimes it would be off now its off all the time, i scanned VCDS and theres a code for the door contact switch. this part number should fix it right? are there any revisions or updated versions of the part that are better?

[07S6]

Just got this annoying error on my c7 s6. Acc was working fine then sometimes it would be off now its off all the time, i scanned VCDS and theres a code for the door contact switch. this part number should fix it right? are there any revisions or updated versions of the part that are better?

I can't help you with that part but sounds like you're one of the lucky ones if it is indeed the switch causing it. Others with this error like myself are stuck playing guessing games between camera, cable, underseat module, etc. since it appears the error codes don't narrow it down much. I'm getting ready to replace my front windshield due to a crack and my Audi tech said he will do some more troubleshooting while he does the glass job. Been living with the ACC error for the past year.

[Audibellybutton]

I can't help you with that part but sounds like you're one of the lucky ones if it is indeed the switch causing it. Others with this error like myself are stuck playing guessing games between camera, cable, underseat module, etc. since it appears the error codes don't narrow it down much. I'm getting ready to replace my front windshield due to a crack and my Audi tech said he will do some more troubleshooting while he does the glass job. Been living with the ACC error for the past year.

I’m sorry to hear that I hope you get it figured out. Might need a calibration possibly? Only dealer can do it

I hope mine is just the switch. I use acc a lot on my a7 the acc was flawless and I never had issues, no door contact switch or faults or anything

[07S6]

I’m sorry to hear that I hope you get it figured out. Might need a calibration possibly? Only dealer can do it

I hope mine is just the switch. I use acc a lot on my a7 the acc was flawless and I never had issues, no door contact switch or faults or anything

Thanks.. they already did calibration, that did not solve it. I'm sure it's one of the other 2-3 things, just haven't gotten around to working on it since i don't drive it much and rarely use cruise control. The car runs flawlessly so i forget that error is even on when i drive it! :)

[Audibellybutton]

Thanks.. they already did calibration, that did not solve it. I'm sure it's one of the other 2-3 things, just haven't gotten around to working on it since i don't drive it much and rarely use cruise control. The car runs flawlessly so i forget that error is even on when i drive it! :)

Yup the car is so great I don’t worry about the acc too much but I do miss it. Hopefully we will both get this issue resolved soon

[Nemesis tl-s]

My ACC went ouit a couple of days ago and I got these codes. I don't know where to start looking for a problem. Does anyone have a suggestion?

C110702
Video line for image processing
Image Processing

B200FF0
Internal malfunction
Image Processing

C110400
Camera malfunction
On Board Camera

U111300
Limitation due to received malfunction value
Adaptive Cruise control

[Cayo71]

I’ve been living with the problem for over a year now. Cable, camera, module… crazy. I wish I knew how to code the car via VCDS and enable regular cruise control.

[Audibellybutton]

I’ve been living with the problem for over a year now. Cable, camera, module… crazy. I wish I knew how to code the car via VCDS and enable regular cruise control.

My brothers we must not give up on this journey of getting our ACC back.

If you can post your autoscan maybe we can dive deeper into the cause.

for mine im pretty sure its the door contact switch but im aware of some other possible issues people could be facing. ACC calibration at dealership would probably be one of the worse case scenarios