Go the back on the outside rear door. look at the roundel and then look up under and you will see that there are two screws holding the release mechanism...remove them...pop out the handle and look at the connection. Since BMW knows people will pay for the ride they do not fix these annoying things....water has corroded the connections and that is causing it to short. Go to the stealer...cough up $114 unpainted or $140 pianted and reverse the procedure.