E-Class (W212) 2010 - 2016: E 350, E 550

Doors Randomly Unlocking While Driving

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Old 11-05-2018, 03:33 PM
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'13 E350 . M276
Doors Randomly Unlocking While Driving

This morning while on way to work, I must have been cruising at about 40 MPH, when all of a sudden, doors unlocked. Shortly thereafter I came to a red light, but once I took off, doors didn't automatically lock as they should when car is 9 MPH. Once I arrived to work, I manually locked doors using door buttons and they locked fine. I have not driven car again since this morning. Any ideas what could be the snafu!
Old 11-05-2018, 03:36 PM
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2014 E550-sold 😩
Sat on your key?
I pressed the panic button with my key in my pocket once and scared the crap out of myself. Granted, I was sitting at a gas station but still.
Keep an eye on it.
Old 11-05-2018, 03:53 PM
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Well, key fob was in my pocket, it's possible it was getting squeezed and somehow got triggered, but that's easy to fix!
Old 11-05-2018, 04:01 PM
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You could still take it to the dealer and pay $150 for a diagnosis and drink some free bad K-cup coffee! ha
Old 11-05-2018, 04:56 PM
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14 550 sedan
May or may not be related but sometimes, if you hit a hard bump, the doors will automatically unlock because the vehicle may have detected an accident, more of a safety feature in case you needed to exit the vehicle in case that was an emergency.
Old 11-06-2018, 01:32 AM
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2008 E350 4Matic, 2011 E350 4matic
I had that happen to me not too long ago, hit a really bad bump on the highway at speeds. Felt like the car might have bottomed out, the doors unlocked. First time it happened to me. It stayed unlocked and I just hit the lock button a couple minutes later.

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