w211 parking sensors not working

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slik_sly

Active Member
Joined
Dec 3, 2007
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112
Front lights come on
You can hear a beeps but the sensors don't work!

Any idea where to start?
 
U've not got gunk around them have you?
After an overzealous wash n wax I was having trouble; till I cleaned the sensors with earbuds...
 
Worth checking for build-up mud around the sensors !!
 
Front lights come on
You can hear a beeps but the sensors don't work!

Any idea where to start?

If it isn't dirt, then a sensor or a few are broken. Do get a beep and two red leds on the display (for each side), either for the front or the rear, or both?
 
Get it on a Star. One or more sensors are probably faulty
 
If it is the dreaded prolonged two beeps, it might be water in them.

When I first got mine, the slightest rain made them do it.

How handy Mercedes had the foresight to put a button right by your left hand to switch them off - it's almost as if they knew they would be ****!

Anyhow, they must have dried out somewhat as they now only do it when it has rained for a while.

I found this on another forum which I am going to have a go at - might be useful...

Park Sensor Fixed - Mercedes-Benz Owners' Forums
 

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