Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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You should have a metal key blade in the end of your key (usually the key ring is part of the key blade) that can be removed from the electronic key and then that used to turn in the trunk cylinder (which may be hidden above the liscense plate area) and open the trunk this way.If the key blade does not rotate properly you may have to spray a small amount of lubricant into the cylinder hole then operate the key to open the trunk.Once opened check for anything jamming up the latch or trunk striker and move the trunk partition to where you need it to operate the soft top.
You may need a new trunk latch or release actuator as these can fail causing no release electronically like you see here.
If the key cylinder and key blade does not work to open it then this may require a lock smith to come out and open the trunk for you or drilling out the cylinder and replacing the cylinder and the latch to correct this here.
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