pmercury

iTrader: (2)

I have helped out a lot of problems remotely with Teamviewer / Xentry and this one comes back a lot
As I even had it myself on the passenger side 2 years ago, here is the DIY as this one is crazy and many fail to solve it.

Symptoms:

ESP BAS lights
Steering going into "safety" hard steering





What it is ? :

The front speedsensors do not give correct speed, that for MB put's your steering into a "safety steering mode", you get hard steering


Fix:

Many people replace the front sensors. why not, cheap (aftermarket) and it can be them.
If it comes back there is a very big chance your wires are broken inside. do not attempt to find the break as most of the time invisible from outside.

Take a ohm meter, remove the plug in the wheel housings and measure from each side to the module on the picture
run new wires

perfect , problem never came back


here the fix for the passenger side wires
driver side wire should be very close, mesure to find them
you can also look at the colors of the pair wires running from the wheel housing

biker349

Great Info. Thanks.