thanks again. mercedes in their wisdom has not provided a tranny dipstick. It's called a sealed unit to be checked by the dealer. I have a tranny computer coming and hopefully that will solve the tranny problem. The top switch does not cause any movement in either top and i am only able to use the soft top and manually lock the front down. The roll bar is in the up position and I can not get it to respond to the switch. I can find no blown fuses and was wondering if there are any relays to check? I may have the only route of replacing the top computer which seems to be very prone to failure Thanks again Mike