Fault code 00473 after rear brake job

[jjvwg]

Looking for some help on things to troubleshoot after doing a rear brake job as I don’t have much time these days with a kid. Did my rear brakes last weekend following rosstech’s youtube video on using VCDS to do the rear brakes. Drove to work two days last week and discovered on Wednesday that both rear brakes were hot and you could smell them so it appears that the pads are dragging. After getting home later in the day I did a quick run through with VCDS to open the e brake and close them again to see if something went wrong the first time but it didn’t help. Over the weekend I pulled the calipers, checked everything over and ran through the sequence again opening/ closing the ebtake and compressing the piston again. Double checked that the calipers were moving freely on the slider pins (cleaned and regressed during initial brake job) and everything is good there. There were no fault codes on the parking brake module either time, but when running through it again on Saturday I noticed the ABS module had code 00473. Researching the code online has lead to quite a few threads with this issue but no real fix other than one guy saying he needed to replace the wiring to both EPB motors. Everything g seems to work fine, car gives no warning like the EPB is on while driving, EPB functions properly, but rotors and pads are still getting very hot during driving. Anybody ever dealt with this code and what was the fix?

[Smac770]

Post the actual complete DTC from VCDS. Maybe people remember what an 00473 is, maybe they don't. Plus 00473 is a component identifier, not the actual fault subcode, which should be in the DTC.

If you had it in the air, I'd say spin the tire and see if it goes around a few times after you let go. My rears will go around a few times, while my fronts might make it one time around.

Can't think of anything offhand that would be a common problem after doing the rears correctly (ie, using tool to release/engage EPB motors).

[A4fuzz]

I'm just going to throw some thoughts out there, I'm no expert. If the parking brake works, it must be communicating fine. If there is an issue, it could be corrosion on the connectors or maybe a bent pin if you disconnected the plugs. I've also been told that doing this procedure without a battery tender can cause damage to the module. Its very sensitive to having correct voltage. Maybe the pads are defective or incorrect? This just doesn't sound like an electrical or mechanical problem.

[jjvwg]

Post the actual complete DTC from VCDS. Maybe people remember what an 00473 is, maybe they don't. Plus 00473 is a component identifier, not the actual fault subcode, which should be in the DTC.

If you had it in the air, I'd say spin the tire and see if it goes around a few times after you let go. My rears will go around a few times, while my fronts might make it one time around.

Can't think of anything offhand that would be a common problem after doing the rears correctly (ie, using tool to release/engage EPB motors).

Ill post a pic of it or the scan itself after work but there was nothing more than fault code 00473 in there (http://wiki.ross-tech.com/wiki/index.php/00473)

I'm just going to throw some thoughts out there, I'm no expert. If the parking brake works, it must be communicating fine. If there is an issue, it could be corrosion on the connectors or maybe a bent pin if you disconnected the plugs. I've also been told that doing this procedure without a battery tender can cause damage to the module. Its very sensitive to having correct voltage. Maybe the pads are defective or incorrect? This just doesn't sound like an electrical or mechanical problem.

never touched the electrical connectors, audi manual says states specifically not to disconnect them during pad and rotor replacement. car was also hooked up to a battery charger the whole time during any work.

[Theiceman]

so what is " did my rear brakes " ?

pads ?
pads and rotors ?
pads rotors and a fluid flush ?
did you rebuild calipers ?
after what you did did you bed the brakes ?


i think its always helpful to be descriptive on what you did when looking for help.

[Smac770]

Please no pics of logs. Just copy/paste the log text full here. You can wrap it in code tags if you want.

[jjvwg]

so what is " did my rear bakes " ?

pads ?
pads and rotors ?
pads rotors and a fluid flush ?
did you rebuild calipers ?
after what you did did you bed the brakes ?


i think its always helpful to be descriptive on what you did when looking for help.

sorry, wrote this at 5:30am while getting ready for work. i did new pads and rotors and that's it. i usually don't bed rear pads for a daily driver unless i did front and rears at the same time.

here is the full scan of the car:

Monday,09,May,2022,16:26:16:54601
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.3.1.1 (x64)
Data version: 20220401 DS337.0
www.Ross-Tech.com


VIN: WAUWFAFL1BA087871   License Plate: B8 AFTER BRAKES 20220509
Mileage: 176930km-109939mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: FL-AU48 (8T0)
Scan: 01 03 05 08 09 15 16 17 19 2E 42 46 47 52 53 55 56 62 72 77
         

VIN: WAUWFAFL1BA087871   Mileage: 176930km-109939miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (0-----CAEB)       Labels:| 06H-907-115-CAB.clb
   Part No SW: 8K2 907 115 AG    HW: 8K2 907 115 D
   Component: 2.0l R4/4V TF H19 0002  
   Revision: E1H19---    CVN: 29BA8F83
   Coding: 010C010A180F0160
   Shop #: WSC 40319 001 1048576
   ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
   ROD: EV_ECM20TFS0118K2907115AG.rod
   VCID: 74E7972ADF6E662FDE-8020
   VINID: 9D196759159C05244020720704B3FC6428

No fault code found.
Readiness: 0110 0101

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K0 907 379 BJ    HW: 8K0 907 379 BJ
   Component: ESP8 quattro  H04 0060  
   Revision: --------    Serial number: --------------
   Coding: 070D18
   Shop #: WSC 06335 123 12345
   VCID: 020BC1F29DDA589FDC-8056

1 Fault Found:
00473 - Control Module for Elect. Park/Hand Brake (J540) 
            013 - Check DTC Memory - Intermittent
             Freeze Frame:
                    Fault Status: 00101101
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 230
                    Mileage: 176915 km
                    Time Indication: 0
                    Date: 2022.05.07
                    Time: 10:44:55

             Freeze Frame:
                    Hex Value: 0x0000
                    Hex Value: 0x00A2
                    Hex Value: 0x0032
                    Hex Value: 0x0297
                    Hex Value: 0x00FF


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 CG    HW: 8K0 907 064 CG
   Component: BCM2 2.0      H05 0434  
   Revision: 00002001    
   Coding: 0B0200
   Shop #: WSC 06335 123 12345
   VCID: 77FDA026C6180D37FB-8022

   Subsystem 1 - Part No SW: 8T0 959 754 A    HW: 8T0 959 754 A
   Component: FBSAUDIB8 IDG  H50 0071 
   Serial number: 0810000117298021    

   Subsystem 2 - Part No SW: 8K0 905 852 D    HW: 8K0 905 852 D
   Component: J764 ELV MLB  H37 0042 
   Serial number: 2310000059186010    

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:. 8Tx-820-043-3Z.clb
   Part No SW: 8T1 820 043 AQ    HW: 8T1 820 043 AQ
   Component: KLIMA 3 ZONEN H08 0180  
   Revision: C1000000    Serial number: 01241120100623
   Coding: 64002000
   Shop #: WSC 06335 000 00000
   VCID: 000FCBFA93D64A8FCA-8054

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 P    HW: 8K0 907 063 P
   Component: BCM1 1.0      H30 0392  
   Revision: 10030001    Serial number: 00000000721261
   Coding: 26001015063CAF010000080300003D0D0F1C060802010161000000
   Shop #: WSC 11868 002 104857
   VCID: 3C777F0ABFBEEE6FD6-8068

   Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 251110  H06 0070 
   Serial number: SWF10110256074      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8K0 955 559     HW: 8K0 955 559   Labels: 8K0-955-559.CLB
   Component: RLS  H04 0003 
   Serial number: 11165062            
   Coding: 025028

   Subsystem 3 - Part No SW: 8K0 941 531 AL    HW: 8K0 941 531 AL
   Component: E1 - LDS  H08 0090 
   Serial number: 00000000001611100597

   Subsystem 4 - Part No SW: 8K0 907 410 C    HW: 8K0 907 410 C
   Component: HOMELINK  H01 0010 

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8K0-959-655.clb
   Part No SW: 8K0 959 655 K    HW: 8K0 959 655 K
   Component: AirbagVW-AU10 H41 0610  
   Serial number: 003GLD0GVX59  
   Coding: 303837354230303030304A55304C384B3053
   Shop #: WSC 06335 000 00000
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 45811AEEC474AFA7B9-8010

   Seat occupied recognition: 
   Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C
   Component: BF-Gewichtss.  H02 0040 
   Serial number: 5810000R1000001U66

   Crash sensor for side airbag: driver side: 
   Serial number: 6334MSME58703A1FM

   Front Passenger's Side Airbag Crash Sensor: 
   Serial number: 6344MSME5964757FW

   Rear Side Airbag Crash Sensor (on driver's side): 
   Serial number: 6352QSME7C6A2038P

   Passenger side rear thorax airbag crash sensor: 
   Serial number: 6362QSME307754026

   Crash sensor for front airbag: driver side: 
   Serial number: 63732SME1B7A2522$

   Crash sensor for front airbag: front passenger side: 
   Serial number: 63832SME69761B1A8

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8R0 953 568 K    HW: 8R0 953 568 K
   Component: Lenks.Modul   H07 0156  
   Revision: 00000000    Serial number: 20101126000733
   Coding: 000017
   Shop #: WSC 06335 000 00000
   VCID: 499916DEE06C4BC75D-801C

   Component: E221 - MFL  H02 0010 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 950 H    HW: 8K0 920 950 H
   Component: KOMBIINSTR.   H20 0258  
   Revision: 00200000    Serial number: EIL71JTCA     
   Coding: 831F11000300D705020000
   Shop #: WSC 11868 002 104857
   VCID: 3467572A97EE262F1E-8060

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8T0 907 468 AB    HW: 8T0 907 468 H
   Component: GW-BEM 5CAN   H06 0117  
   Revision: GB800053    Serial number: 5300G10B168056
   Coding: 00C303
   Shop #: WSC 06335 000 00000
   VCID: 0109CEFE98DC4387C5-8054

   Subsystem 1 - Part No SW: 8K0 915 181 E    HW: 8K0 915 181 E
   Component: J367-BDM  H07 0170 
   Serial number: 100083FB181110      

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (R199)       Labels:. 8T0-035-785.clb
   Part No SW: 8T0 035 785 A    HW: 8T0 035 785 
   Component: SG ext.Player H08 0290  
   Revision: 00000000    
   Coding: 020302
   Shop #: WSC 06335 000 00000
   VCID: 3979661EB08CDB47CD-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8K0 959 793 M    HW: 8K0 959 793 M
   Component: TSG FA        H12 0357  
   Revision:             Serial number: 0000011743766 
   Coding: 011C03204000410001
   Shop #: WSC 06335 000 00000
   VCID: 4A9B29D2E56A40DF54-801E

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 CG    HW: 8K0 907 064 CG
   Component: BCM2 2.0      H05 0434  
   Revision: 00002001    Serial number: 0137828948    
   Coding: 0126063A20BA445480B0023200000000
   Shop #: WSC 11868 002 104857
   VCID: 77FDA026C6180D37FB-8022

   Subsystem 1 - Part No SW: 8K0 959 719     HW: 8K0 959 719 
   Component: GTO BF  H06 0050 
   Serial number: 00000000000000329397

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

   Subsystem 3 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591 
   Component: J245 PS133  H07 0041 

   Subsystem 4 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591 
   Component: J394 PS229  H07 0041 

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-ASC.clb
   Part No SW: 8R0 035 223 F    HW: 8R0 035 223 E
   Component: DSP STD       H11 0440  
   Revision: 00000000    Serial number: 00000000000001
   Coding: 0203010102
   Shop #: WSC 06335 000 00000
   VCID: 2F6D58467EC805F763-807A

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8K0 959 792 M    HW: 8K0 959 792 M
   Component: TSG BF        H12 0357  
   Revision:             Serial number: 0000110632186 
   Coding: 011C03204000410001
   Shop #: WSC 06335 000 00000
   VCID: 499916DEE06C4BC75D-801C

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
   Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
   Component: EPB Audi B8   H09 0100  
   Revision: 00000003    Serial number: 10000000667419
   Shop #: WSC 00000 000 00000
   VCID: 3467572A97EE262F1E-8060

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 8K0-907-357.clb
   Part No: 8K5 907 357 B
   Component: Dynamische LWR  H02 0010  
   Revision: 00000001    Serial number:               
   Coding: 0000004
   Shop #: WSC 06335 000 00000
   VCID: 3979661E708CDB47CD-806C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 8Tx-035-1xx-56.clb
   Part No SW: 8T1 035 186 R    HW: 8T1 035 186 R
   Component: Con3 Sirius   H06 0351  
   Revision: 00000009    Serial number: AUZ5Z6J1501003
   Coding: 04020002010285004359070803
   Shop #: WSC 06335 123 12345
   VCID: 46831DE2F172A4BFB0-8012

   Subsystem 1 - Part No SW: 8T0 919 603 F    HW: 8T0 919 603 F
   Component: Display  

1 Fault Found:
02635 - Tuner Not Enabled/Activated 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 190
                    Mileage: 176915 km
                    Time Indication: 0
                    Date: 2022.05.07
                    Time: 10:44:15


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
   Component: TSG HL        H11 0357  
   Revision:             Serial number: 0000110549303 
   Coding: 010C03204000210001
   Shop #: WSC 06335 000 00000
   VCID: 45811AEECC74AFA7B9-8010

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
   Component: TSG HR        H11 0357  
   Revision:             Serial number: 0000110549300 
   Coding: 010C03204000210001
   Shop #: WSC 06335 000 00000
   VCID: 45811AEECC74AFA7B9-8010

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8T0 862 336 E    HW: 8T0 862 336 E
   Component: FSE_256x BT     H42 0650  
   Revision: 00000000    Serial number: 00000005100645
   Coding: 0010370
   Shop #: WSC 06335 000 00000
   VCID: 3D71720E64A4E767E1-8068

No fault code found.

End-------------------------(Elapsed Time: 03:26)--------------------------

[Smac770]

There's no fault code for the J540. Clear DTCs again and see if anything comes back. The ABS module is odd sometimes when clearing DTCs; you have to do it two or three times to make it realize there's no more issues.

But do that, don't touch the epb for a few days, scan again, see if something comes back on its own. If not, then activate and release the epb and scan for codes before turning engine off. Some things go away when you engine off. So scan live. If it's clean at that point, and it should be, there you go. If not, then come back with that new scan.

[jjvwg]

There's no fault code for the J540. Clear DTCs again and see if anything comes back. The ABS module is odd sometimes when clearing DTCs; you have to do it two or three times to make it realize there's no more issues.

But do that, don't touch the epb for a few days, scan again, see if something comes back on its own. If not, then activate and release the epb and scan for codes before turning engine off. Some things go away when you engine off. So scan live. If it's clean at that point, and it should be, there you go. If not, then come back with that new scan.

I’m aware of that and had been trying with no luck. Well, if I didn’t have much of a problem on my hands before I certainly do now. After I posted that scan I was looking through the ABS and parking brake module and I accidentally clicked into basic settings. I was in a rush cause I had to get my son up from his nap and feed him. Since you can’t back out from the “put battery on charger” warning I just hit ok thinking I’m not doing anything and just going to hit “done,go back” once I get in. Well, that seemed to be enough to piss it off cause now I have a parking brake malfunction flashing on the dash and codes in the brake module. Probably need a new module now. Anyone know if that module has CP on it or can I easily swap a new one in myself? Charging the battery now and hoping I can somehow reverse these codes by clearing them and getting the battery fully charged but it’s highly unlikely. That still doesn’t take care of the original code in the ABS module though. Still looking for input on that.

[Gunnark100]

Anyone know if that module has CP on it or can I easily swap a new one in myself?

From memory, should be cp free module.

[Smac770]

Yeah, people have picked up a used one and swapped it in easy enough. It sits in the front of the right rear cargo hold, behind the right cover. The black box with EPB in the letters on it.

[jjvwg]

Well if there’s no CP then that’s great, 1 min fix once I have a new one in hand. Time to find a local part out I guess. Posted in the Ross tech forums as well to see if there’s any way to salvage this one.