Join Date: Dec 2005
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Your conclusion does make sense as if the roof is frozen to the seals it could damage either the seal,the roof or the motor.
I've not heard of this system being used before,but it does seem to add up.
.Thanks for taking the time to post it here,I've moved it to the Scenic Knowledge Base for future reference.
I'd rather push my Alfa than drive a BMW....
Currently in Lagdti's garage:
2004 Saab 9-5 HOT Aero and a 2001 Audi A3 1.8 Turbo