Sport Differential Troubleshooting -Temp sensor, Adaptation Reset Invalid Data Record

[iamshayan]

Hi,

So I picked up my 2010 B8 S4 with 131,000km on the clock. It had a code for temperature sensor in the AWD module, when I would clear it, it would go away but the second i "hucked" a corner, or aggressively accelerated out of it, it would come up with "sport differential system fault" on the dash and wouldn't clear until i cycled the ignition.

specifics to follow:

Address 22: AWD (J492) Labels: 8K0-907-163.clb
Part No SW: 8K0 907 163 HW: 8K0 907 163
Component: 4 Wheel Drive H09 0004
Serial number: 001905090001060
ASAM Dataset: EV_AllWheelDiffeQSPCAN 003007
ROD: EV_AllWheelDiffeQSPCAN.rod
VCID: 6DD11D90BC88172E51-8038

1 Fault Found:
0273 - Oil Pressure and Temperature Sensor
C1004 F0 [008] - Oil Pressure Implausible
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 9
Reset counter: 97
Mileage: 128331 km
Date: 2017.08.10
Time: 23:58:27

Voltage terminal 15: 13.91 V
Voltage terminal 30: 13.91 V
VPS Voltage: 13.91 V
Pump for all-wheel drive: voltage: 0.00 V
motor pump voltage terminal B: 5.00 V
Pump for all-wheel drive: current: -11.25 A
Torque distribution: 222 Nm
Torque distribution: specified value: 370 Nm
State KomonentenRegler: normal
Control Module temperature: 39 °C
Temperature output stage-Data: 35 °C
Temperature QCU-Data: 39 °C
Thermal load ECU-Data: 0 bar
Thermal load of all-wheel drive pump: 0.0 %
Oil pressure and oil temperature sensor temperature: 40 °C

I did some reading and some chatting with a couple friends who are techs and ended up picking up an entire differential instead of buying the sensor. The sensors were expensive and the diff was actually cheaper than buying both sensors. Figured I could try the sensors at least and then swap the whole thing if they dont work....

Here's where I know I messed up. I was in VCDS and I was just looking (messing) around in the AWD module. I went into basic settings, then was told to go into security access before I could access anything,so I did, popped back in and was in business.... There was an option to "reset all adaptation values". In my head I'm like hmm, maybe I can just reset the adaptation and the sensor will learn again or something. So I tried it. NO..... VERY NO. DO NOT DO THIS. ha. fuck.

It seemed to reset all the adaptation values no problem. However, I don't think it automatically relearns them. At all. I think there's some sort of drive cycle required to initiate each sequence or something. I know the B6 with the G85 Steering sensor calibration makes you do circles till the lights go out. I think it requires something like that. Unfortunately there is nothing published by Bentley or Ross Tech so the only way to complete this drive sequence is through Guided Functions by a tech at the dealership? BOO.

So now when I start the car, right away I get the Sport Diff System Fault and it warning doesn't go away.
Most control modules that depend on it show "no signal /no comunication with AWD module" - Cluster, abs, etc.

More specifically:

Address 22: AWD (J492) Labels: 8K0-907-163.clb
Part No SW: 8K0 907 163 HW: 8K0 907 163
Component: 4 Wheel Drive H09 0004
Serial number: 001905090001060
ASAM Dataset: EV_AllWheelDiffeQSPCAN 003007
ROD: EV_AllWheelDiffeQSPCAN.rod
VCID: 6D84C36D0D12193F817-8038

1 Fault Found:
0312 - invalid data record
B2005 00 [001] - -
Not Confirmed - Tested Since Memory Clear

Has anyone else experienced this or made this same mistake. I'm not going to lie here, I'm pretty sure I fucked this up... at the same time I ask myself... why does my differential need a computer? Why did I spend money on a cable to do the opposite of what I did? Why.

Strange as it is, I feel like the differential is still functioning when I put it in comfort or dynamic. I think I might be crazy though as I've never actually had a warning free Sport Diff since owning the car.

Thanks in advance, any input is appreciated, Hopefully can save someone from making the same mistake at the very least.

[S4'ed]

You will have to take it to a dealer. The regular mechanical part of the diff works, but you don't have any torque vectoring function until the computer adaptation is redone.

[iamshayan]

You will have to take it to a dealer. The regular mechanical part of the diff works, but you don't have any torque vectoring function until the computer adaptation is redone.

Thanks for trying to help. I understand this as I mentioned in my post. I'm trying to see if anyone knows the process for the adaptation. It seems silly that it's a dealership only service. I have access to all the adaptation channels in VCDS I just know there's a special sequence that needs to be carried out.

[Hughesdt]

I did the same thing. Cant find anything to do to get the sport diff warning light to go away now. Started with just an occasional implausible oil pressure.

Anyone with any help???

[godlyone]

just curious how much was the whole differential?

[Hughesdt]

I didn't replace the sport differential. I had the same issues as the OP. I did the same thing the OP did, reset the adaptation hoping the car would re-learn the adaptation. That was a serious mistake it appears. I'd copy my auto-scan from VAG COM but it looks exactly like the OP. I agree that this is silly to have to take it to the dealership to get this fixed. I just was hoping to hear from someone that might have a solution, or the dereaded trip to the dealer is the only answer.

[Hughesdt]

No help so far, Ross tech tells me:

The fault code below would need to be corrected with the factory scan
tool (ODIS) and an online connect to the manufacture, VCDS will not be
able to clear this fault code.

>> 0312 - invalid data record
>> B2005 00 [001] - -
>> [Ungültiger Datensatz DTC_DAT_INVALID]
>> Not Confirmed - Tested Since Memory Clear

There is a chance that ODIS may not be able to correct this concern
and the controller would need to be replaced.

Looks like I am off to the dealer...

[Hughesdt]

Went to the dealer, 2hrs and $111 later all is working. The technician said it showed up to him as a loss of communications to the sport differential. He had to contact the manufacturer and get some information to load into the computer, don't know which computer, and once communications was established he went through the bleeding/setup process and now the car drives perfectly. Had the implausible oil pressure, before the VAG-COM reset that completely killed the sport diff, and that has not shown up so far either. No change of sensors. Verified oil levels, they where fine if not slightly high. Had 35k service before the sport diff faults started showing up.

Happy sport differential owner again!

[iamshayan]

suppose I should update this.

I ended up just swapping the temp / pressure sensors from my spare parts diff instead of swapping the entire thing.

Yes the dealership can relearn the process and it should only take an hour but you do have other options. I can't go into much further detail.

I learned that VCDS isn't the end-all be-all when it comes to audi diag. I wont say too much more but I'll leave you with a couple acronyms to look up. ODIS and ELSA.

Cheers.

[Adamantium]

The adaptation channels are just a deeper level of coding. There are hundreds of them and you really need to know your coding to sort them.

A normal vcds autoscan does not show the adaptation channels that you cleared. You need to adjust the settings before auto scanning to record all the adaptation channels.

You basically reset the fine tuning coding parameters to zero, you uncoded the module.

Luckily not so expensive to sort. I have a full adaptation channel scan of a car with sports diff. If you do this again in the future, you have to manually reinsert the correct adaptation values one by one.

[iamshayan]

The adaptation channels are just a deeper level of coding. There are hundreds of them and you really need to know your coding to sort them.

A normal vcds autoscan does not show the adaptation channels that you cleared. You need to adjust the settings before auto scanning to record all the adaptation channels.

You basically reset the fine tuning coding parameters to zero, you uncoded the module.

Luckily not so expensive to sort. I have a full adaptation channel scan of a car with sports diff. If you do this again in the future, you have to manually reinsert the correct adaptation values one by one.

I understand what I did.

Nice of you to offer, but the adaptation channel values will differ by vehicle - The differentials are stamped with clutch pack classification number physically on the unit. - the dealership will have to put your car on a hoist and grab those numbers and enter them in.

heres an example of what they're looking for.

2018-11-03_11-59-26 by ilovequattro, on Flickr

[Adamantium]

I understand what I did.

Nice of you to offer, but the adaptation channel values will differ by vehicle - The differentials are stamped with clutch pack classification number physically on the unit. - the dealership will have to put your car on a hoist and grab those numbers and enter them in.

heres an example of what they're looking for.

2018-11-03_11-59-26 by ilovequattro, on Flickr

Did the dealership tell you that?

I only ask because I’ve just retrofitted:

Adaptive cruise
Dynamic steering
Lane assist
Side assist
Hill hold assist
Main beam assist
TV
Passenger seat memory and a fair few more.

I grabbed the adaptation channels from another car, and other than a few things missing that had to be worked out after fitting a new can gateway and convenience module, it’s all working perfectly with zero errors.


I can accept that the sports diff might be the exception to this that wouldn’t have worked.

[blackfunk]

Did the dealership tell you that?

I only ask because I’ve just retrofitted:

Adaptive cruise
Dynamic steering
Lane assist
Side assist
Hill hold assist
Main beam assist
TV
Passenger seat memory and a fair few more.

I grabbed the adaptation channels from another car, and other than a few things missing that had to be worked out after fitting a new can gateway and convenience module, it’s all working perfectly with zero errors.


I can accept that the sports diff might be the exception to this that wouldn’t have worked.

Wow that's quite a bit of kit installed. Is there going to be a write up? Would love to peruse through it.

Sent from my SM-N950U using Tapatalk

[Adamantium]

There’s was a fair chunk more than that.

Also carplay and a fis control module, electric rear sunblind, adaptive headlights (forgot those), homelink - we don’t have that in the uk.

I don’t have the skills for the above myself, I left it to a retrofitting friend who did the lot.

Luckily he videoed everything. Is putting together a collection of them all that I’ll make available if interested.

[iamshayan]

Did the dealership tell you that?

I only ask because I’ve just retrofitted:

Adaptive cruise
Dynamic steering
Lane assist
Side assist
Hill hold assist
Main beam assist
TV
Passenger seat memory and a fair few more.

I grabbed the adaptation channels from another car, and other than a few things missing that had to be worked out after fitting a new can gateway and convenience module, it’s all working perfectly with zero errors.


I can accept that the sports diff might be the exception to this that wouldn’t have worked.

Cool, let's go off topic. here's a list of things I retrofitted myself.

Homelink

Autohold

MMI 3g+ (b8.5 in B8)
-screen upgrade
-main hdd unit
-control head
-can gateway
-climatronic unit
-trunk mounted amplifier
-all loom run throughout the car to the trunk.

Keyless entry./push start
-4 door handle sensors
-4 antennas
-proxomity key
-loom
-rs keyfob

All the coding was done myself. The dealership had to remove component protection though.

Getting back to my post. No that's not 'what the dealership told me.' it's what I learned through experience. The sport differential IS the exception.

I attached one last piece of information but I'm not going any further into detail.



received_10160446810940302.jpeg

Sent from my ONEPLUS A5000 using Audizine mobile app

[Adamantium]

Nice attitude.

Good luck solving future issues when that’s how you treat people trying to help.

So the sport diff is the one component where adaptation channels can’t be copied across. What were the chances?

Such a shame you had to pay a dealer to solve your problem.

[iamshayan]

Nice attitude.

Good luck solving future issues when that’s how you treat people trying to help.

So the sport diff is the one component where adaptation channels can’t be copied across. What were the chances?

Such a shame you had to pay a dealer to solve your problem.

Sorry if you don't like my attitude, wasn't trying to be rude. I'm also not looking for help - if you read the post.
Not sure why you think I had to pay the dealer - did you not even read my posts? I gave ( what i thought were) pretty good hints as to how you could solve this issue yourself.

Sport diff adaption channels are all based on clutch pack classification and fluid wear. You can't copy from one car to another. - it's a pretty unique system.

Not trying to spread misinformation. Not much info is documented on these units yet. lets try to keep it classy.

[Adamantium]

Sorry I confused you with Hughesdt. Glad you didn't lose out financially.

On the plus side, you didn't ask for help but because I posted saying I had a full scan, someone has asked for it and managed to benefit from it - so it was useful to someone.

[ValidatedS4]

I had the same error and swapped out both sensors, read and adapted them separately and still throwing the error..I guess it's off to the dealership for the sport diff service and see what they find out.

[nomis88]

I had the same error and swapped out both sensors, read and adapted them separately and still throwing the error..I guess it's off to the dealership for the sport diff service and see what they find out.

Please report what they come up with. I’ve gone down the same path but haven’t sent my rig off to the dealer

[iamshayan]

I had the same error and swapped out both sensors, read and adapted them separately and still throwing the error..I guess it's off to the dealership for the sport diff service and see what they find out.

Try changing the transfer box oil - (not the 75w90) the other stuff that's expensive and redoing teh oil aging adaption process.

[AudiS41962]

Please report what they come up with. I’ve gone down the same path but haven’t sent my rig off to the dealer

Just had same issue on my car. Seals on both axles shot so replaced them and both sensors. Replace one and you are fine, replace the other and you are fine. Replace BOTH and you have to recode the sport differential. Mechanic has a guy who is doing this now rather than going to dealer.

[S4'ed]

From SSP 990193:

"Oil Pressure/Temperature Sensors G437 and G640 have
their own serial numbers and characteristics. They are
used to establish the identity of the sport differential for
All Wheel Drive Control Module J492. They are colorcoded and must not be installed in the wrong positions.
G437 and G640 should never (if possible) be replaced
at the same time. Always replace one after the other. If
this isn’t done, All Wheel Drive Control Module J492 will
assume a new sport differential has been installed and
additional adaptation and maintenance procedures will
be necessary, including changing of the ATF.
The speed modulation gearboxes (or super-position
gearboxes) are tested and calibrated during the
manufacturing process. The tolerances for each gearbox
are inscribed on the sport differential housing in the form
of a hexadecimal code. This code is used for adaptation
via the VAS Scan Tool when repairs are made to the
differential."

[WH500]

Hi
Just did the same to my s4 b8 avant reset all values and now get the same invalid data record fault. Any chance you still have the values would really help

[Teejhorse]

Hi
Just did the same to my s4 b8 avant reset all values and now get the same invalid data record fault. Any chance you still have the values would really help

I’m in the same boat. Surely someone has to have found a way by now.

[mahhdd]

Bump. Same issue after a dead battery.

[Teejhorse]

Bump. Same issue after a dead battery.

If it helps you or anyone else at all I ended up having to take my S4 into a local Audi dealer, even they were stumped and gave it back to me unfixed. After a grueling 40 hours or so of research and long nights I found out about the inputting of the clutch class’s and brought it back to the dealer to have them input the 2 clutch classifications via Elsa or whatever Audi’s software system is. These clutch classification numbers are in the form of 4 characters each and located on each side of the rear differential flange (clutch one **** clutch two ****).

I’ve tried finding out how to input these through OBDEleven and Rossteck, but to no prevail. Dealer has to do it.

In your situation, prior to going this route I would make sure you have the 2-pin connector for the AWD control module plugged in correctly on the positive battery terminal harness. If that is connected properly I would then try to find a way to diagnose if the AWD control module itself is faulty, or if the data was wiped somehow and it just needs this clutch class programming.

Best of luck, post back here with your findings.

[Teejhorse]

*battery negative connection, sorry. And check fuses as well.