DavidKing

I drive a 2009 C Class Luxury. The fault indicator light in the car is activated and the error message on the dash display is " ESP Unavailable and ESP Inoperable". However the brake still works but cruise control can not be activated as a result of this error.

I took the car of a diagnosis and the result was faulty Steering Angle Sensor, but a technician commented that Steering Angle Sensor has nothing to do with ESP.

Can anyone pls advise if the Steering angle sensor could really be the fault

eagle_lex

just my common sense tells me that the steering angle sensor does play a role in the total ESP of the car. it would have to use a calculation from that sensor at some point. so if its out then i guess the car is just shutting down the ESP totally. makes sense if you think about it. get it fixed and see. good luck!

ambit

Wrong forum for a C300.. but..
Yes the Steering Angle Sensor is definitely related to traction control and cruise control.

Here's a thread in the W203 forum talking about it:
https://mbworld.org/forums/c-class-w...le-sensor.html

I had the same symptoms, replaced mine (from a CLK320) and everything is fine now, no errors.