E270 2003

[mahussain2000]

MB Star is coming up both front wheel speed sensor faults, although I have replaced them and checked on MB Star which shows that they are working. (Checked the distance from the disc to the sensor as suggested and this all seems fine - cleaned with airline aslo) On the dash I have ABS orange ABS/ESP/Brake (white) fault.

Any help on what this fault is greatly appreciated

Mahussain

 

[bob6600]

When you clear the fault, does the light go off then come back?

 

[mahussain2000]

Yes after the vehicle goes above 10mph ish.

Normally when the car is switched on there is no fault on the dash. They only appear after I drive off

Why?

 

[Dieselman]

Yes after the vehicle goes above 10mph ish.

Normally when the car is switched on there is no fault on the dash. They only appear after I drive off

Why?

The initial checks are for the ABS ECU, Valve block and sensor continuity.
After driving off the wheel speeds are compared and any imbalance throws an error.

Are the reluctor rings in good condition and not cracked?

 

[mahussain2000]

I have not checked the reluctor rings at the front. Are they easy to check and replace?

Mahussain

 

[mahussain2000]

Bearings have been replaced, abs sensors replaced, esp module replaced, abc unit replaced and fault still exists.

What else could cause this fault?

Any help is greatly appreciated

Mahussain