Can't lock car without key in ignition - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 11-23-2012, 12:29 AM Thread Starter
BenzWorld Newbie
Date registered: Nov 2012
Vehicle: SL 500
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(Thread Starter)
Can't lock car without key in ignition


Today I came across a problem with my SL500 Mercedes (year 2004 I believe). At first when I clicked the "unlock" button, it wouldn't unlock. So, I used the hidden key to manually unlock the driver's side and started the car--no problems. When I got to my destination I just simply hit the "lock" button above the navigation screen to lock the passenger side and then manually locked the driver's side.

I thought it was just the key that needed its battery replaced, but now I am having second thoughts. When I got home and turned off the car and removed the key from the ignition, I hit the "lock" button above the navigation screen to lock the passenger side door but it wouldn't work. I put the key in the ignition (I didn't start the car) and then hit the "lock" button once more--this time the passenger side door locked. I then locked the driver's side manually as I did earlier today.

So now I'm thinking there might be something other than the key that is wrong with the car? Has anyone had experience with this before?

Thank you and take care,
NEM is offline  
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