rear wheel speed sensor

[onefortheroad]

A 207 540 03 17 im thinking my gremlins lie in the rear right , after my fiasco at the weekend with a failed main battery, the car ran fine for 3 days until today it threw another wobbler , i kept driving and 3 miles later the car sorted itself out .

scanner showed fault in rear right sensor ,along with abs,esp,fail safe,cruise control, blah blah blah . is it best to get genuine sensor or would trw , bosch do the job? thanks .

 

[mioba]

genuine all the way. clean the inner hub

 

[onefortheroad]

im getting fault code u0129 , can a wheel speed sensor trigger this broken wire etc, . once it triggers the code i cant look for fault codes as the scanner wont talk to various systems, so i dont even know which wheel to look at . this fault is happening at various times,speeds etc , can be 10 mph can be 70 mph .... any help appreciated.

 

[bob 6600]

I would start with clearing the codes and charging the battery fully. Clean the sensor and then go from there. As said, if it does need replacing, get a genuine one.

 

[EmilysDad]

if it's easy to replace you can try a pattern part. If it's a barsteward to replace then use genuine OE

 

[onefortheroad]

I would start with clearing the codes and charging the battery fully. Clean the sensor and then go from there. As said, if it does need replacing, get a genuine one.

I've come to realise when the fault occurs that its every wheel not just 1. Getting to grips with the icarsoft mb2 in itself is another matter .

 

[bob 6600]

It could well be your ABS module then rather than a sensor. Does it show any fault codes?

 

[umblecumbuz]

Run the iCarsoft while you're driving, and check the wheel sensors that way.
You will get live data on all four together and will easily see if one misbehaves.
If they all show a consistent and similar reading - time to look elsewhere.

 

[onefortheroad]

Run the iCarsoft while you're driving, and check the wheel sensors that way.
You will get live data on all four together and will easily see if one misbehaves.
If they all show a consistent and similar reading - time to look elsewhere.

Did that and when it crashed all 4 read about the same values .

 

[onefortheroad]

It could well be your ABS module then rather than a sensor. Does it show any fault codes?

U0129

Plus about 50 more .

 

[onefortheroad]

Just drove to work and back today ,no issues what so ever . I'm not alone with this issue neither it would seem. Some saying its OK in the dry but not in the wet. ??? Weird science

 

[bob 6600]

U0129

Plus about 50 more .

Generic code for loss of communication to the control module. Could have been caused by the battery, delete them and keep an eye on it. Sorry, not much help I know

 

[onefortheroad]

Generic code for loss of communication to the control module. Could have been caused by the battery, delete them and keep an eye on it. Sorry, not much help I know

ive tried all that , the fault manifests at any given time. its not happened today , I'm blaming water ingress from pressure washing the wheels.

 

[onefortheroad]

Stripping out to check things , the holder for speed sensor wiring not even clipped onto chassis.

 

[onefortheroad]

well it happened again , loss of esp ,abs . power steering, all 4 wheel speed sensors, i also get codes relating to the brake lights circuit 54 , if anyone is following this , would or could this be caused by a brake switch / faulty ....