W204 Parking Sensors Turn Themselves Off
 

Hi guys,

my first time posting something and I have a question. Recently got a Mercedes C Class W204 and for some reason the parking sensors don't work. When I press the parking sensor button on the dash, the parking sensors switch themselves on (the red radar thing at the front lights up red and there is a loud beep noise) but then it switches itself off?

I've tried; putting it into reverse, pressing the button when I'm parking up and various things but it just turns itself off. A friend of mine hooked his diagnostic machine to the car and it said all the parking sensors had low voltage, but the control unit had enough voltage running so a bit contradictory?

If anyone can help/advise I'd be grateful!

Suj

The front and rear parking sensors on my C don't need to be turned on - they work irrespective and beep when I get close to something f or r. I have a button on the dash to disable them but I rarely do this as it's easy to forget that you've turned them off. But they reset the next time the key is removed and reinserted. That is to say: the default position is ON.

Your right, thats the way they should work. But whether i start the car again, put it in reverse, drive a bit forward where there is an obstruction in front, they just dont seem to go off

Hi Suj
Did you got it sorted in the end and what was the issue ?

thanks