Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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If the rear ones released and the front have not, this can cause stress on the front ones and prevent their releasing. relock the other locking pins, have 2 people to push down on either side of the hardtop while you release the front locks - this will usually do the trick. Sometimes you have to tap with roof over the area of the front locks with the palm of your hand to help pop them free.