Try this, and make sure you're using the master key, not the valet key, it's the only one that will get you in. The trunk will open with the key if you operate it properly.
Insert the key and turn the blade slightly toward the left, approximately ten o'clock position and
then push upward. The trunk will be heavy to lift but it will come up. My Benz dealer had to educate me on this Friday. It may take a few tries to find the right spot with the key, but it works.
Yes, it's a pain. Sometimes you have to unbolt the latch completely from the inside. I don't blame him, he'll never be able to recoup the time lost playing with it. Do the rest of the door locks work? If not, you cold try to find the line that goes to the trunk, find a T or junction and try to put your own vacuum on it with a mighty vac. See if he's willing to give that a shot. The pump is probably under the hood Hopefully not in the trunk). Let me see if I can find some schematics.
Tuesday, November 15th, 2011 AT 1:17 AM