My first post as a new member. My 350 SL (2003, 35K from new) has been faultless for years - until today. A strange fault with the PSE unit means that it overruns constantly until the ignition is switched off. The vario roof operates as though it was new as does the central locking system with soft close doors and boot lid. How can I stop the PSE from over running ? Will this fault cause harm to the PSE unit ? Any guidance would be very much appreciated. Cheers !