the top will only lift part way up trunk opens but top stay in trunk
top will only lift part way up on 2003 Mercedes-Benz SL55 AMG
I would check the fuses and relays for the Top, is everything is good i would also check the motor for the top.
it is proably a limit switch(s), that only a benz dealer should put in. you have to disassemble alot of the trunk.