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Discussion Starter #1
Hey. New to the forum.

I have a 2011 vr6 Touareg. Drove a mountain pass today and was all good. However on the way down when it was super wet roads (running water) I got a flash up on the dash: “Fault: ABS ESP” and then it disappeared after one second. It was accompanied by a sort of jolt. I drove another 150kms with no more faults.Do we think it was water in the sensor? How do I know which one? Will the car have stored a code? Do the trip over the mountain passes with a 6month old so want to pre-empt any issues. Cheers
 

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Hello and welcome to the forums.
I could swear I read a post on the FB Touareg group that was the same word for word.
If you have VCDS which is a must tool you could follow the video link below and see if it helps.

 

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Hey. Yeh I posted it there but didn’t get anything back in the way of help. I presume someone somewhere must have experienced this before. I know that a lot of folk on forums don’t like the FB groups so figured I’d spread my range. I don’t VCDS but someone local is letting me borrow theirs. Thanks johs
 

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Hey,

So I ran VCDS and got this (I have only included ones which showed malfunction and I am not sure why. As you can see the ABS and Park Brake fault both happened at the exact same time which was the exact time I was writing about in my original post (and not since). They both claim high voltage but only the Park Brake says 18V - any ideas? Like I said it was super rainy and a little cold.

Address 01: Engine (J623-CGRA) Labels:. 03H-907-309-V1.clb
Part No SW: 03H 906 023 B HW: 03H 907 309
Component: 3,6 FSI ULEV2 H11 8643
Revision: M7H11---
Coding: 002A0012433600000000
Shop #: WSC 99999 1023 2097151
ASAM Dataset: EV_ECM36FSI01103H906023B 002005
ROD: EV_ECM36FSI01103H906023B.rod
VCID: 2149D92B3092468E3C-8074

2 Faults Found:
14627 - Fuel Pump Control Module
P025A 00 [032] - Electrical Fault
Intermittent - Not Confirmed - Tested Since Memory Clear

5582 - Oil Pressure Switch for reduced Oil Pressure
P164D 00 [032] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000


Address 03: ABS Brakes (J104) Labels:* 7P0-907-379.clb
Part No SW: 7P0 907 379 G HW: 7P0 907 379 A
Component: MK25A H33 0421
Revision: -------- Serial number: 417500010EC010
Coding: 5B7613C309242554DAF5C89690D3A4407700
Shop #: WSC 31414 790 00001
ASAM Dataset: EV_MK25AXT 007001
ROD: EV_ESPMK25A00700.rod
VCID: 418979ABD0D2668E5C-8014

1 Fault Found:
171009 - Supply voltage
U1012 00 [072] - Voltage too High
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 1
Reset counter: 204
Mileage: 136163 km
Date: 2020.11.14
Time: 12:49:12

Standard Freeze Frame Dynamic: 00 4E 2D 07 00 00 00 00 01 00 01 10 44



Address 08: Auto HVAC (J255) Labels:| 7P6-907-040.clb
Part No SW: 7P6 907 040 AA HW: 7P6 907 040 AA
Component: Klima 2 Zonen H18 0612
Coding: 4606200880
Shop #: WSC 31414 790 00001
ASAM Dataset: EV_AirCondiFront 004001
ROD: EV_AirCondiFront_VW52.rod
VCID: 73E5E363DAEE841E1E-8026

1 Fault Found:
15360256 - Component Protection
U1101 00 [008] - Active
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 18
Reset counter: 204
Mileage: 129762 km
Date: 2020.07.24
Time: 09:03:26




Address 53: Parking Brake (J540-) Labels:| 7P0-907-801.clb
Part No SW: 7P0 907 801 E HW: 7P0 907 801 E
Component: EPB H51 1100
Revision: 00000000 Serial number: A106180008A
Coding: 01040000
Shop #: WSC 31414 790 00001
ASAM Dataset: EV_ParkbA7 000006
ROD: EV_ParkbA7.rod
VCID: 35611D7B941ADA2EF0-8060

Slave 3:

1 Fault Found:
12652545 - Supply voltage
U1012 00 [008] - Voltage too High
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Frequency: 1
Reset counter: 204
Mileage: 136163 km
Date: 2020.11.14
Time: 12:49:12
Voltage: 18.0 V
 

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Seems like a speed sensor might be shot
 

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There isn't anything about a speed sensor in his scan results. How are you getting to that deduction?
 

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Actually I meant to add abs sensor also.

LOL I didn't say anything was hinted in the scans. My experience with cars tells me that when driving in rain and you get those specific lights on the dash it oftentimes has to do with wheel speed sensors or ABS sensors
 

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Yes, I agree on a wheel speed sensor typically being the culprit for an ABS system malfunction, however, given the actual scan results and the fact that this same user has controllers going into component protection, I'd jump to the conclusion that he's got another voltage regulating issue which all these other errors are steaming from.

I'd focus on that 18v before I fried everything in the vehicle... but that's just me.
 

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Discussion Starter #9
Hey,
The thing with the AC though only happened after I cleared any codes (a week after the ABS event) and it was working perfectly up until this point? How can those two things link?

I’m not even sure where to start with an 18v spike if I have no more information than that written in the VCDS readout above? Like maybe water getting into the sensor/wiring could cause a short but there is so much of it and it was momentary.

Thanks for the help
 

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Hey,
The thing with the AC though only happened after I cleared any codes (a week after the ABS event) and it was working perfectly up until this point? How can those two things link?
All the controllers run off the electrical... thus they can all fry due to over voltage, not necessarily all at the same time.
Throw a meter on the vehicle before you fry everything and see if it is running at those excessive voltages. Or hook up the VCDS to it and log the voltage to see if it's a random thing or constant, etc.
 

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Yes, I agree on a wheel speed sensor typically being the culprit for an ABS system malfunction, however, given the actual scan results and the fact that this same user has controllers going into component protection, I'd jump to the conclusion that he's got another voltage regulating issue which all these other errors are steaming from.

I'd focus on that 18v before I fried everything in the vehicle... but that's just me.
Sage advice. Sounds like you've got more to offer at this point.

Stick a multimeter on the batteries and the alternator?
 
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