Doors Unlocking While Driving
Anybody have this problem and/or suspect the cause?
Doors Unlocking While Driving
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Joined: Nov 2001
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The doors are designed to unlock in an accident. Some have reported they also unlock when doing extreme maneuvers, such as fast, abrupt cornering, etc.
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Joined: Feb 2003
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From: Charlotte, NC
Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
This has been a problem for some in the past.
IF the doors are unlocking when you hit a bump, or in a hard corner (with a little chassis flex involved), then the problem is the adjustment of one of the door switches. When one door switch shows that the door has been opened, all doors open (you can check this every time you get our of your car).
You simply need to figure out which switch, and adjust it (or have the shop do it).
IF the doors are unlocking when you hit a bump, or in a hard corner (with a little chassis flex involved), then the problem is the adjustment of one of the door switches. When one door switch shows that the door has been opened, all doors open (you can check this every time you get our of your car).
You simply need to figure out which switch, and adjust it (or have the shop do it).
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Joined: Apr 2006
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I don't think its happening while driving erratically/aggressively. I do have low profile tires but I've had them for a while and it just started happening. However, it started happening recently after I hit a curb at a fairly high speed 
(so pissed about the curb rash on my once beautiful polished lips).
If I figure out that its once of the switches, how would I go about adjusting? (DIY-sytle - I'm out of warranty)
(so pissed about the curb rash on my once beautiful polished lips). If I figure out that its once of the switches, how would I go about adjusting? (DIY-sytle - I'm out of warranty)
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Joined: Oct 2004
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From: Oregon
2005 C55, 1988 260E, 2000 Chevrolet Silverado
I found that if you have loose items in the trunk, they can slide and hit the rear SAM causing the door locks to unlock. And others have had the door controllers fail. (FYI) I have an extra passenger side controller.
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thats interesting...for the past week I've had a topsider jug full of oil sliding and bouncing around in the cargo/truck area. I guess maybe its been hitting the SAM (??). What is the SAMand where would it be located in the trunk/cargo area (where the fuses are perhaps)?
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Super Member
Joined: Oct 2004
Posts: 761
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From: Oregon
2005 C55, 1988 260E, 2000 Chevrolet Silverado
thats interesting...for the past week I've had a topsider jug full of oil sliding and bouncing around in the cargo/truck area. I guess maybe its been hitting the SAM (??). What is the SAMand where would it be located in the trunk/cargo area (where the fuses are perhaps)?
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