f1geek
Posts: 1021
Joined: Fri Jan 23, 2015 1:18 pm
Location: SF Bay Area

Re: Lots of error - random

I'm glad they offered you a loaner.

Ok, so cold snap was probably not the cause.

It sounds like the dealer is on the right track - other than the general "electrical system" error, all the other ones are related to ABS and wheel speed, I believe. Maybe they need to replace the wheel sensors for all wheels (maybe hubs, too) - could be there is a lose or damaged sensor wire? I would imagine they chose the right rear because of a diagnostic, so it seems odd the work didn't fix the issue. Best of luck.
2017 e-Golf LE, Multi Coat White with Black Vegan Leather interior, purchased in early 2018
2015 e-Golf SEL leased for three years, returned in early 2018
mattw
Posts: 5
Joined: Thu Jan 13, 2022 12:53 pm

Re: Lots of error - random

Appreciated.

Will post a follow up once car is fix.
mattw
Posts: 5
Joined: Thu Jan 13, 2022 12:53 pm

Re: Lots of error - random

A bit delayed in following up on the random error messages ( I have had the car back for a month now ) but wanted to pass on some info on what caused it in case anyone else has the same or similar issue.

To recap - the car would randomly display the same five error messages. By random I mean they would occur when turning on the car, while driving or sometimes when a door was opened or closed or going over a speed bump. Turning the car off then back on sometimes worked and sometimes they would just go away.

Error messages were-
-Front assist not available
-Error: Tire pressure monitoring system
-Error: ABS
-Error: Hill assist
-Error: Electrical system

V.W. was not able to pin point the issue so they recommended replace the following parts to try and fix it.

- Right rear ABS sensor
- Right rear hub bearing. Apparently this sends a signal to the ABS sensor for speed.
- ABS module

When none of those worked, they recommended bypassing the passenger side wiring harness for the ABS sensor. This required the tech at the dealer to manufacture a wiring harness overlay. Once the tech had made the harness and began installing it he found a pinched wire under the panel of the passenger side rear door. This pinched wire was causing the system to freak out whenever it touched the metal frame which would explain why the error messages would randomly occur when the door was opened or closed or any motion that would cause the pinched wire to shift and touch the frame.

Hopefully this info will be helpful in the event someone else has a similar issue.

Cheers,
Matt
SunnySoCal
Posts: 9
Joined: Thu Jun 06, 2019 9:23 pm

Re: Lots of error - random

Thanks for sharing.

Glad they figured it out.
carls
Posts: 1
Joined: Tue Jul 26, 2022 5:55 am

Re: Lots of error - random

I would like to thank you for posting about your issues with the wiring pinched by the panels under the car creating all the warning lights. My wife is driving a 2016 e-golf and it started experiencing the same issues. I replaced the 12v battery it did not want to stay charged (it was the original) that did not resolve the issues. Like you explained my symptoms come and go, I have not had the diagnostic codes pulled yet that will be my next step. I was curious where exactly the pinched abs wire were and did they repair the original loom or use the new jumper wire. Thanks!
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