Automatic transmission changes gear at random by it self

Tiny
LJUBA SINDZIREVIC
  • MEMBER
  • 1998 BMW 318I
  • 1.9L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
My car shifts by it self from D to 2 or 3 as I drive. If I select S, then it stays there and behavior is normal, it does not change gears by it self. We tired changing gearbox oil, but no change. The car is mostly in my garage, as I work abroad. Also, the small display at the gear changing handle shows wrong gear number - when in D, it shows 2 or 3 and it is not the same as the dashboard display shows. When I shift to S, the small green lights may or may not show S, but some other, at random and changing. Car is in Serbia, Europe.
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Wednesday, March 15th, 2017 AT 12:12 PM

1 Reply

Tiny
KEN
  • ADMIN
Hello,

This car has a transmission control module that sounds like it is going out and needs a new one. Check all of the fuses to be safe though.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here is the location which is under the hood on the passengers side. check the diagrams below.

Please let us know what you find so it will help others.

Best, Ken
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Friday, March 17th, 2017 AT 12:37 PM

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