M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Rear parking sensor lights up but no sound

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Old Nov 20, 2024 | 12:33 PM
  #1  
azzurribaggio's Avatar
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2011 ML350
Rear parking sensor lights up but no sound

So the SUV has had two minor fender benders in the rear where the shop had to remove the rear bumpers. What I've observed are the light do gradually go from outside to the center as I get closer to something but NO SOUND.
How do I go about fixing this?
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Old Nov 21, 2024 | 03:59 AM
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2010 ML550 VIN WDC1641722A564750, 2010 B180
Scanning it with a decent scan tool should reveal if there is a fault code with the sensors. Id be starting there.

Also, its common for the wiring to the rear sesnors to corrode and that's worth a look too.
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Old Nov 21, 2024 | 08:23 PM
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2010 ML550 VIN WDC1641722A564750, 2010 B180
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