Random dashboard lights (ABS Fault?)

[80sNRG]

Hi all,

 

I hope you're all well

I was hoping for a prod in the right direction on this one.

 

My dad has a 14 plate MK2 Superb TDI 170 thingy, till now it's been a fantasticly reliable car.

A few weeks ago his dashboard lit up (please see attached picture) with a bunch of errors.

The problems were intermittent at first and would go away after a good drive, however they're now permanent.

The car drives just fine and doesn't give any indication there's a problem other than the dash lights.

 

A quick bit of Googling suggested it might be the battery on its way, so he's replaced that but the problem persists.

Prior to the replacing the battery he put the previous one on a charger, would that cause an issue or could he have popped something?

 

Now I'm finally able to see my parents again (stupid virus 😡) I paid a visit with my copy of VCDS and found issues with the following systems:

 

- ABS

- Steering Assist

There were other intermittent errors for the GPS short-to ground and the memory seats, but meh about them for now.

 

So I was hoping it might just be some cheap and crappy sensor that's failed, but it looks like the ABS module has failed so I'll him to check the wiring to it.

 

VCDS log output below  I can upload the full log if it's useful. Yes the date/time on his car was all wrong.

 

If anyone could give me a prod in the right direction I'd really appreciate it.

 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BM    HW: 1K0 907 379 BM
   Component: ESP MK60EC1   H46 0164  
   Revision: 00H46001    
   Coding: 863D6016092600FB610B06E5901A0092A0000023
   Shop #: WSC 33361 790 00056
   VCID: 7EF39FBCE9CA7E7670-802A

6 Faults Found:
02214 - Tire Pressure Warning 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 3
                    Mileage: 117737 km
                    Time Indication: 0
                    Date: 2014.09.25
                    Time: 08:31:48

             Freeze Frame:
                    Count: 0
                    Count: 32768
                    Count: 4608
                    Count: 16401
                    Count: 54075
                    Count: 0
                    Count: 64767
                    Count: 0

00668 - Supply Voltage Terminal 30 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 1
                    Fault Frequency: 4
                    Reset counter: 13
                    Mileage: 117878 km
                    Time Indication: 0
                    Date: 2014.10.19
                    Time: 14:20:14

             Freeze Frame:
                    Count: 3
                    Count: 2
                    Count: 4096
                    Count: 128
                    Count: 42496
                    Count: 0
                    Count: 254
                    Count: 0

03841 - RPM Sensor Rear Left: Incorrect Signal 
            000 - - - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 1
                    Fault Frequency: 4
                    Reset counter: 21
                    Mileage: 117886 km
                    Time Indication: 0
                    Date: 2014.10.19
                    Time: 15:04:05

             Freeze Frame:
                    Count: 2
                    Count: 2
                    Count: 20480
                    Count: 71
                    Count: 43776
                    Count: 3782
                    Count: 65535
                    Count: 0

00290 - ABS Wheel Speed Sensor; Rear Left (G46) 
            003 - Mechanical Failure - Intermittent
             Freeze Frame:
                    Fault Status: 00100011
                    Fault Priority: 1
                    Fault Frequency: 11
                    Reset counter: 23
                    Mileage: 117908 km
                    Time Indication: 0
                    Date: 2014.10.20
                    Time: 10:21:40

             Freeze Frame:
                    Count: 0
                    Count: 0
                    Count: 4608
                    Count: 67
                    Count: 53261
                    Count: 63990
                    Count: 63748
                    Count: 0

00290 - ABS Wheel Speed Sensor; Rear Left (G46) 
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 01101100
                    Fault Priority: 1
                    Fault Frequency: 10
                    Reset counter: 237
                    Mileage: 117848 km
                    Time Indication: 0
                    Date: 2014.10.15
                    Time: 10:16:11

             Freeze Frame:
                    Count: 0
                    Count: 2
                    Count: 12800
                    Count: 72
                    Count: 54016
                    Count: 62464
                    Count: 64767
                    Count: 0

01325 - Control Module for Tire Pressure Monitoring (J502) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 6
                    Reset counter: 237
                    Mileage: 117848 km
                    Time Indication: 0
                    Date: 2014.10.15
                    Time: 10:16:21

             Freeze Frame:
                    Count: 3
                    Count: 2
                    Count: 12800
                    Count: 16390
                    Count: 53504
                    Count: 62464
                    Count: 64512
                    Count: 0

 

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 R
   Component: EPS_ZFLS Kl. 195    3501  
   Revision: 00H22000    
   Shop #: WSC 33361 790 00056
   VCID: 39794CA07064994E05-806C

1 Fault Found:
01316 - ABS Control Module 
            013 - Check DTC Memory - Intermittent
             Freeze Frame:
                    Fault Status: 00101101
                    Fault Priority: 3
                    Fault Frequency: 48
                    Reset counter: 24
                    Mileage: 118106 km
                    Time Indication: 0
                    Date: 2014.11.16
                    Time: 10:39:26

             Freeze Frame:
                    Voltage: 14.63 V
                        DU
                    Temperature: 35.0°C
                    RPM: 1446 /min
                    Speed: 53.0 km/h
                    Speed: 53.0 km/h
                    Count: 0
 

[Declan O'Shaughnessy]

There was a similar thread recently which might be worth reading through. It looks like your ABS sensor has definitely failed, which would cause the lights on the dashboard. I don't know if that would then cause the fault you are seeing on the ABS module or not, but someone with more knowledge will be able to give you better advice on that. Given that the fault on the ABS module is a Priority 3, and the faults on the sensor are Priority 1, my best guess would be that replacing the sensor would clear the fault with the module. If the ABS module had completely failed, I'd expect it to be a higher priority fault, but I could be wrong!

 

Best of luck with it, and remember to post back once you have a fix / more information (helps the other members who have the problem in the future).

[80sNRG]

Thanks for the quick reply!

As you can tell, I'm rubbish at reading VCDS faults - however drawing my attention to the priority value has filled in some troubleshooting blanks for me. Thank you very much!

 

I have passed the message on and he's gonna jack the car up and have a prod at the rear left speed sensor.

[80sNRG]

Quick update - Tl;Dr: my dad pulled the sensor off, gave it clean and re-attached it and all the lights went away.

 

When the car moved the christmas tree lit up again, so now there's a new sensor on the way.

Looks promising! Thanks!

[a666andy]

Just for info, I had similar at start of the year, had the sensor replaced then a short drive and errors again.

 

Turned out the hub was corroded / breaking up and was then replaced too. All good for a few more hundred miles but fault back again so waiting to get it checked.

 

I suspect the hub damaged the replacement sensor so that will need swapping out again, but I won't be paying for it.

[80sNRG]

Morning all,

 

My dad replaced the sensor this morning, went for a drive and the dashboard is clear of errors.

 

I've passed on the message to keep an eyeball on corrosion on the hub, for now he's immensely pleased that his dashboard is now clear and it was a cheap fix - bar the cost of that new battery! - But it was due to be replaced anyway.

 

Thanks for the help

[Declan O'Shaughnessy]

Good to hear. Probably worth doing another scan with VCDS when you're next there to make sure that the ABS module fault is definitely gone. Probably is, but never hurts to be sure!