CLK 200 Roof Alarm sounding going over Pot Holes

[Garwillis]

Hi All ..got a problem with my wifes roof on a 2005 CLK W209 in that when it goes over a pot hole especially on the left side the warning light comes on the dash to say the roof is in operation, meaning you have to stp put the roof through a partial open and reclose it ! Ive been to a Merc specialist that tested the sensors and relays and said all was good but its still doing it .. fine when the roof is off only when its in the up position.. HELP

 

[oddjob]

Have you tried keeping the roof open? Or a trip and reset? Or maybe hit the motor with a 'technical tap' (AKA Torch!)