Question about 2008 Mercedes-Benz ML 350

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My MB ML350 stick key (metal key) wont unlock the door. The key goes in, it turns but the lock will not open.

I need to lock my remote key inside the vehicle, but would like to pull out the stick key and give that to a friend to open the car and then put the stick key in the remote and use the car as normal. But when I lock the car using the main remote, the stick key from the spare remote does not seem to be able to turn the lock to open the door. It goes in and turns, but nothing happens to the lock.

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  • Kathryn Johnson
    Kathryn Johnson Dec 03, 2014

    Thank you I did recently replace my battery, jsut thought it was manual and didnt think twice about it being tied to power. Thank you so much.

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  • 262 Answers

Check the door lock fuse in the fuse panel... try the key on another door... may just be that the manual lk is malfunctioning on that door... if the other doors don't respond and the fuse is good then the key probably needs to be reprogrammed by the dealer to the door... happens when your battery dies or is replaced.

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

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