my clk forgot while roof down and cover open so no roof /windows or boot auto, need to reset it , tried to open boot so as to disconnect battery but no go ,can turn key left or right if pushed in but still no use,is the connection under bonnet same if disconnected wil it cut feed to car if not how can i get in boot . roof cover can be closed and using shaft on lock behind seat.car will start and drive and remote locking works but not boot. is there any other way to reset it thanks