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BMW Repair/2004 535i

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Question
The trunk open light comes on when you pull out and after coming to a stop the next time you pull out it comes on again I just repainted the trunk lid for a customer and now this is happening any help would be appreciated

Answer
There's a microswitch in the lock mechanism in the trunk.  Sounds like that is set just on the edge, so that when the momentum of the car goes to the rear (acceleration), it signals that it's open.

Check to assure everything with the lock and wiring is mounted securely.  Then assure the mechanism is securely latching the catch.  Finally, assure the ground wiring is clean, and a ground connection wasn't painted over.

BMW Repair

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John Kingery

Expertise

BMW Repair (e24, e36, e38, e39)

Experience

Owned/maintained 5 BMW's, plus friends. Done exhaust systems, head gaskets, fuel systems, brakes, suspensions, electrical, seats, etc., etc.

Organizations
BMW Club

Education/Credentials
degreed Mechanical Engineer, w/20 years experience

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