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hi i need help im driving a Bmw  e90 320i msport 2007 model, i have checked everything and i was told that it doesnt have a reverse switch or fuse for i thought if it did  i would replace the reverse light switch or fuse . please advise what to do Update (10/05/2018) sory forgot to mention its an automatic transmission

Hi, Lance. You may have a failed or out of adjustment neutral safety switch. This switch is how the car knows electrically which gear you are in. If the bulbs themselves are good, and there is no fuse, I would start there.