I have read about others having similar issues but I believe they always discovered it was the key being inadvertantly pressed while in their pocket. The sunroof will open with the unlock button but I have a hard enough time getting the damn thing working when I want it to much less just accidentally by putting it in my pocket. That being said I have come out to my garage and found the windows open so I am assuming that it is possible. At least for me it seems that the remote is very sensitive to interference.

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2008 ///M5 - Black Sapphire Metallic/Black Perforated Merino/Madeiro Walnut trim/6-spd Manual
2005 X5 4.8is - LeMans Blue/Black Nappa/Anthracite trim | born 05/20/05 - For Sale
2003 ///M5 - LeMans Blue/Black Interior/Aluminum trim/6-spd Manual - retired
2002 525i - Jet Black/Black Sport/5-spd Manual - retired
2002 X5 3.0i - Sterling Gray Metallic/Tan Leather Sport/5-spd Manual - retired