The windows and the top are controlled by the RCM (roof control module, Stu292 referred to it as roof ecu). Stu292 has already swapped RCMs, so we are trying to figure out what makes a good RCM misbehave. Modern RCMs, like the one in the Crossfire are quite well engineered. They have built-in over-voltage protection. Stu292's symptoms may be artifacts of the RCM shutting down briefly when the supply voltage has spikes - I don't know. Looking forward to Stu292's progress reports...

Klaus

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