E-Class (W211) 2003-2009

Locked out of Car - Completely

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Old Jun 17, 2020 | 06:19 PM
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ParadiseLV's Avatar
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From: San Antonio, TX
2008 E550
Locked out of Car - Completely

Hello all,

Long story short, I was preparing to replace the airmatic compressor. Per the instruction, I disconnected the battery and closed the trunk leaving the keys in the trunk. I am completely locked out (window closed, doors locked) of the car with no spare key. Can someone help me get into my car?
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Old Jun 17, 2020 | 06:47 PM
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'99 and '05 E55 AMG
Get your title or registration, go to a Mercedes dealer, and order a new key fob and key.

At the least, order the mechanical key which you can use to open the trunk so you can get to the solitary key fob.
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Old Jun 17, 2020 | 07:04 PM
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This place is a joke.
First of all there's no need to disconnect the battery when replacing the airmatic compressor.
A qualified person can pop the door lock using the strap method. A qualified person can use a 12v jump box to apply power at the passenger footwell power distribution block. Then pop the trunk with the switch on the door.
It's probably safer and cheaper to get a new key blade from the dealer like bbirdwell stated.
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Old Jun 17, 2020 | 07:15 PM
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2012 E350 4Matic
A towing service or locksmith can easily open the door, and if you have the pass-through behind your rear seat armrest you won't even need to apply power and open the trunk, you should be able to fish the keys out through the rear seat armrest opening (depending on where they are in the trunk).
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Old Jun 17, 2020 | 07:17 PM
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I don't think I have a pass thru. But If I did this method, would I be able to use the emergency latch inside the trunk on the lid?
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Old Jun 17, 2020 | 08:07 PM
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This place is a joke.
Originally Posted by ParadiseLV
I don't think I have a pass thru. But If I did this method, would I be able to use the emergency latch inside the trunk on the lid?
No, that requires power.
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Old Jun 18, 2020 | 03:03 AM
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2008 E350 4Matic, 2011 E350 4matic
Originally Posted by E55Greasemonkey
First of all there's no need to disconnect the battery when replacing the airmatic compressor.
A qualified person can pop the door lock using the strap method. A qualified person can use a 12v jump box to apply power at the passenger footwell power distribution block. Then pop the trunk with the switch on the door.
It's probably safer and cheaper to get a new key blade from the dealer like bbirdwell stated.
I don't think you have to go that far. You just need to move the fuse for the cigarette lighter so that it's powered on all the time and then apply power to the cigarette lighter so you can use the trunk open button inside.

Worse case is just paying for the metal key at the MB dealer. That will be cheaper than the entire key fob.
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Old Jun 18, 2020 | 03:18 AM
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2008 E350 4Matic, 2011 E350 4matic
Oh missed the part about the doors locked and windows closed. You could also call AAA and have them send a locksmith to open your trunk. Or if you don't have AAA, a friend who has one can also call it in for you, they just have to be present.
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Old Jun 19, 2020 | 03:29 PM
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w220 s600
I had a dead flat battery on mine and the key function would not work (another story) i ended up using the trick plastic wedge in door drivers door to get a gap and wire coat hanger bent to pull the handle, did it in 5 mins
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