I can get my W124 to do the same thing with the key in the lock...sunroof pops up, and windows move up slightly (when they are halfway down)...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car