Unknown key
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Joined: Jan 2024
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06 S-350
Unknown key
So I recently got my s class and when I received it came with 3 keys, 2 regular keys and one fully mechanical looking key and I can’t find any info on it and I was wondering if anyone knew what it is for/ where it goes. For reference I have already tried unlocking all the visible key holes and none of them work
MBWorld Fanatic!
Joined: Dec 2012
Posts: 2,474
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
Some possibilities:
Locking Lug Bolts.
One of the old "Clubs" - a steel bar, locking the steering wheel.
Some car covers have locks to prevent their theft.
An aftermarket alarm system with a hidden key switch.
Have you tried the factory metal keys hidden inside the key fobs? Does the mystery key look like one of those? Are you familiar with the mechanical trunk/boot lock?
Locking Lug Bolts.
One of the old "Clubs" - a steel bar, locking the steering wheel.
Some car covers have locks to prevent their theft.
An aftermarket alarm system with a hidden key switch.
Have you tried the factory metal keys hidden inside the key fobs? Does the mystery key look like one of those? Are you familiar with the mechanical trunk/boot lock?
MBWorld Fanatic!
Joined: Dec 2012
Posts: 2,474
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
Well, well! That is a Mercedes key.
I would try it (without forcing!) in each of the four locks, inserting in each direction, and turning in each direction. While I was doing that, I would do the same for each of the metal keys from the key fobs. My first guess is that a previous owner wanted a spare metal key, or that one or more locks have been changed. It is not at all unusual for the trunk lock to be difficult to operate, since that is rarely done, and it is a bit complicated to operate. Lubrication might be helpful.
I would try it (without forcing!) in each of the four locks, inserting in each direction, and turning in each direction. While I was doing that, I would do the same for each of the metal keys from the key fobs. My first guess is that a previous owner wanted a spare metal key, or that one or more locks have been changed. It is not at all unusual for the trunk lock to be difficult to operate, since that is rarely done, and it is a bit complicated to operate. Lubrication might be helpful.
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