door unlock problem
Thread Starter
Senior Member
Joined: Oct 2009
Posts: 345
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From: So Cal
2010 C300 & 2014 E350
door unlock problem
I was driving on the freeway for about 15 minutes and all of a sudden the doors unlocked by itself. It didn't lock back, just unlocked and stayed unlocked.
I have a 2014 E350 p1 package if that helps.
I have a 2014 E350 p1 package if that helps.
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From: Virginia
W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
Don't the doors unlock themselves if they sense a crash? Maybe you hit a bump or a pothole big enough to trigger that?
MBWorld Fanatic!
Joined: Jan 2004
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From: Seattle WA
99 E320
do your door jambs have pin switch which detects when to door is being opened?
if so, the switch may be worn and indicating an electrically closed circuit, thus
triggering the interior lights to come on.
on the w210s the driver side door tends to exhibit this first as it's the most often
used door. try testing this WAG theory by using your body weight against the
door...pushing, then pulling. if the door unlocks, this is a big clue. do same test
for pax door, followed by rear doors (helper needed).
p.s. i'm presuming your car has that auto-convenience door locking feature when
your car exceeds walking speed
if so, the switch may be worn and indicating an electrically closed circuit, thus
triggering the interior lights to come on.
on the w210s the driver side door tends to exhibit this first as it's the most often
used door. try testing this WAG theory by using your body weight against the
door...pushing, then pulling. if the door unlocks, this is a big clue. do same test
for pax door, followed by rear doors (helper needed).
p.s. i'm presuming your car has that auto-convenience door locking feature when
your car exceeds walking speed
Last edited by raymond g-; Apr 19, 2014 at 05:43 PM.
Junior Member
Joined: Dec 2011
Posts: 31
Likes: 2
From: Long Island New York
2021 C300 AMG Line Sports Coupe
Door Locks
When I hit a pot hole or a heavy bump in the road my auto door locks pop open. I just hit the lock button and continue on my way. No harm done to this point. My ride is a 2011 e350 sport P1.
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
My thought was that somehow the car perhaps thought a collision has happened but if so should it be also calling the TeleAid, which it did not?
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Thread Starter
Senior Member
Joined: Oct 2009
Posts: 345
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From: So Cal
2010 C300 & 2014 E350
I have a 2010 model and it has unlocked doors three times while driving on interstate highway at speed. Road totally smooth, no any kind of bumps or pot holes at all. Interior lights did not come on during any of these.
My thought was that somehow the car perhaps thought a collision has happened but if so should it be also calling the TeleAid, which it did not?
My thought was that somehow the car perhaps thought a collision has happened but if so should it be also calling the TeleAid, which it did not?
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Joined: Nov 2009
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From: Earth (Mostly)
2023 XC60 PHEV, 2023 XC40 BEV
I too had this happen 2x on my 2010, but not (yet?) on my 2014. Reported it to stealership, had it placed on the service order just in case, but no resolution or duplication was ever found.
Super Member
Joined: Nov 2009
Posts: 576
Likes: 19
From: Earth (Mostly)
2023 XC60 PHEV, 2023 XC40 BEV
I too had this happen 2x on my 2010, but not (yet?) on my 2014. Reported it to stealership, had it placed on the service order just in case, but no resolution or duplication was ever found.
