If your key turns freely in the drivers side door, you need to repair the door lock. Parts are available online for less than $20, and there are a ton of videos showing how to do the repair...took me less than 20 minutes total.

To get into the rear doors, you will need to pull the seat bottom, lean the rear seat as far back as possible and remove the screws for the door panel. Once done, the panel can be removed, but there is not much room, so be patient and work with it until it is clear. VERY TIGHT, don't force anything, and you will have to get your arm between the door and the panel to get everything disconnected.

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Thanks,

-Ronnie

2003 BMW X5 3.0