SOURCE: transmission won't shift to 2nd and 3rd gears goes from 1st to 4th.
Doesn't sound like a simple fix. I would suggest having it serviced.
SOURCE: 1990 BMW 750il, 84,000 miles has wierd transmission problem...
It might be switch inside the Transmission, BMW(or a garage with a scanner) can hook it uo to a scanner to check them.
SOURCE: Crazy BMW problem!! Please Help
unhook your car battery for about a half hour. hook it back up and see if the lights are off now. all the codes should reset, drive the car over to autozone and have them test the charging system to see that it is operating correctly. also if your radio is of the anti-theft variety make sure you know the code to activate it and how to enter it.
Testimonial: "Thanks"
SOURCE: bmw 325i transmission slippage
it must be something to do with electronic control to gearbox ecu wireing i assume the replacement gearbox came with tourqe convertor a diagnostic check might be best option
Testimonial: "Had a sneaky suspicion that it might be the transmission computer.... need more input before i started trouble shooting and had it downloaded"
SOURCE: 1997 BMW 328i convertible automatic tranny slipping
I would also check the Transmission 'switch' ( A / M) on center console next to your Shifter... My 328 just started this symptom... when changing from Rev. to Drive, it goes into 'Winter' mode.. (M) and feels like its slipping... Just press the "A" side of the button...and it should shift normally.. of course, then there's a problem with the switch ! bout $90... g
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