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United Bimmer Do-It-Yourself Disclaimer:
The following tutorial is meant as a guide and is not
guaranteed to be complete or 100% accurate. By following this DIY, you
understand any work done on your car is at your own risk and we hold no
responsibility if you break something. If you feel uneasy with this
risk, we recommend you take your car to a professional mechanic to have the
work done. Otherwise, enjoy yourself and good luck!
Backup lights don't work? Can't see behind you at night? If your
bulbs check out okay, then the next step is to replace your backup light
switch. This should take no more than a few minutes, and the switch costs
under $10. This is probably the shortest and easiest DIY, but I wrote it
anyway for those not so mechanically inclined
Jack up the car to give you more room to get underneath. Photo shows the
switch on the driver's side of my Getrag transmission. On ZF trannies, it
will be on the passenger side towards the front.
To pull the wire harness off, feel for the metal locking clip and push in.
Then pull the harness off the switch. Photo shows the harness off, with the
metal clip visible (sorry for the blurry picture).
You'll need a 3/4" box end wrench to unscrew the switch (inset photo), since
not much else will fit in that space. If you use a socket set, you may need
a deep well socket, but it might not fit with the wall of the tranny hump so
Say goodbye to the offending switch, and pop in the new one. Official torque
is 15 ft-lbs, but a smidge past hand tight will do just fine. Plug the
harness back in, lower the car, and you're done!
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author know it was helpful! This praise alone motivates users
to write more DIYs and keep giving back to the BMW community.