I've done a search and can't find the answer. The roof won't operate on my 98 SLK 230. I left the car for a few months and the battery discharged and the roof won't operate. I have re-charged the battery fully. I can hear the motors working if I press the roof switch as if the put the roof up, but not down. I'm told it could be that the windows and roof need re-synchronising. Please could someone tell me how to do this. Thank you very much in advance for any replies.