Hi folks

Having a bit of an ordeal trying to source and fit a replacement rear wheel speed sensor on our 2018 combi superb (3V5)

Its been replaced twice now, and still showing 6+ faults on the onboard computer - tyre pressure, adaptive front lights, ESC, hill hold assist etc

Local mechanic changed it initially, with a no name sensor, and the faults became intermittent (coming and going every couple of minutes in a single journey). He made no promises (he's more crash repairs then anything), so I tried again myself with a bosch one ( part# 0 986 594 526). Faults became persistent at this point, with them all triggering as soon as ignition turned on - so slight improvement.

OBDeleven is showing a heap of messages, but I think all are stemming from the single - 'C101D4A - Right rear ABS wheel speed sensor - Incorrect component installed' code

And thats where I am now - Im still convinced its just a new sensor needed..

I had it up on axle stands and pulled the working rear left one, and its an 'ATE 10.0711-6438.3' and had the code 'WHT 003 864 B' on it also.

I tried autodoc.ie and the WHT code does come back with results - it appears the Bosch one I havent been successful with is a WHT 003 864 (no 'B'). But my search previously, it looked like the 'B' was specifically for vehicles with park assist, which I dont have... have regular cruise control, but not adaptive cc - maybe Im wrong there

What do people think? If the WHT code matches whats there in the working left one, the below link should be ok? Going to go for another ATE, just to keep the two on the back axle consistent..

https://www.auto-doc.ie/ate/7618461

Just before I go ahead and wind up buying another wrong sensor(!)

I'll message you to request your VIN. From that I will be able to look up the correct part number.

46 minutes ago, woss said:

WHT 003 864 B

That's shown as correct for your VIN, but superseded by WHT 003 864 C.

Ordered another one there (previously linked) - will let you know how we go once it arrives, thanks again Pete

That’s my original on a 2016 and the part I replaced it with

Thanks Dan, yes so you’ve a rev ‘a’ one, and I’ve a rev ‘b’, which I think makes sense given the years

What’s caught me out here I think, is that when I looked for a main brand (Bosch in this instance) for the no name my mech fitted I was given two options - one with no mentioned ‘vehicle options’ and another mentioning cruise control and park assist.

I’ve since mapped those two Bosch options to the oem part numbers and turns out the wrong one I went for last time (that mentioned no ‘vehicle options’) is WHT 003 864 (with no rev number)

The one I think I should have gone for is the other one, that did mention cruise control & park assist. Notably I don’t have park assist, but do have cruise control (regular, not adaptive), so I could be wrong here, but suspect this is the case

Still waiting for this part to arrive (due tomorrow..), so no update there

In the meantime, airbag light must have been feeling left out and has decided to join the Christmas tree lights 😩

Horn and other buttons on the steering wheel not working, so suspect clock spring needs replacing.. anything else to check there though? ‘Driver airbag igniter, resistance too high’ B10001B

Replacing clock spring might be beyond my comfort zone..

Part arrived, and fitted and alot of issues immediately cleared (all bar the new airbag one, will work seperately on it)

So electrically, I think the car is happy with the sensor now - ie is passing the initial self test

Problems return however when taking the car for a drive. Very frustrating.. suspect now, that when the problem originally reared its head, it may not have been the sensor, but the abs ring - just a bit of a mess with having someone do half the job, and me doing the rest (lessons learned)

But for the sake of this thread, with the original error message as per title, I think this one is resolved