C Class c220 w203 cdi Rear Sensors Not Working Help!!!

ratrace

Really need your help

My rear sensors dont work on my c220 cdi coupe took the trim off today to see if a wire had come off but all seemed ok i pushed all the wires in but still not working

i have heard that on theses cars if one sensors is faulty the this will knock all the other sensors off and the whole system wont work how true is this

also how to you go about diagnosing which sensor is faulty any ides has anyone had this problem before

can any one help and point me in the right direction

any help will be fantastic

Thanks in advance

colino

With most parking sensors you can put the car into reverse with ignition on (car not running!) and listen very closely to each sensor. You will hear the working ones give off a very faint clicking sound, the silent one needs changed.

ratrace

colino wrote: »

With most parking sensors you can put the car into reverse with ignition on (car not running!) and listen very closely to each sensor. You will hear the working ones give off a very faint clicking sound, the silent one needs changed.

Thanks

where will the noise come from will it be at the back at the sensor or inside the car

marlot

Make sure the reversing lights are working... The gearbox switch could be u/s

ratrace

went out today and did the test to see if there was any noise coming from the sensors all were ok but one (no noise) at the front of the car but im not sure if the wiring is all connected for both the front and the back or weather its separate gotta investigate i may have to buy a repair manual for the car

also got my diagnostic software coming soon so it will be interesting to see what that throws up it may be the pdc module that gone on the blink

pdc = park distance control

ratrace

marlot wrote: »

Make sure the reversing lights are working... The gearbox switch could be u/s

all working