Silly question but is the passenger window lock out engaged? (So only driver switch set to work).

If the regulator is the problem I would expect you will hear the motor and with the switch depending how they are wired it's possible they can be in series where one bad contact will affect both sides (but check for the lock-out switch I bump mine on almost every day).

Did you have wearing regulator symptoms (slow binding window) before it stopped going up?


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)