I believe you have an electronic key that locks and unlocks the doors in the car. In that case check the driver manual to see how to set the locking control of the key. On my 98 E300, there are two setting, global locking or local locking. In the global mode, it unlocks every lock including the trunk. If it is in local locking, it will lock each on its own depending on how the button is pressed. Hope this helps...

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2002 G500 74K
1998 E300 200K and rising
1995 S600 73k


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