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bmw x5 - rmg 09-21-2013 02:54 PM

bmw x5 down shifting problem
I own a 2002 X5 E53, 69,000 miles on the clock, FSH, well maintained and looked after.

recently I've started to experience problems with the gearbox down shifting. The symptoms are as follows:

car at normal operating temperature, my typical journey to work takes 15-20 mins. When I get to 40 M.P.H the car changes down to 2nd gear from 5th reaching 4000 RPM, if I accelerate beyond this point, the gearbox changes back up to 5th gear. It will do this several times during my journey. It will behave in the same way if in sports mode, and when in manual if I put the gear in 5th it will auto select 2nd gear immediately.

any help to find a solution and recommend a mechanic in the south east (near Gatwick airport) will be much appreciated as I don't have a clue what the problem is, and I need to fix the problem quickly (not using car for fear of damage)

thanks a lot Richard

bmw x5 - rmg 11-10-2013 01:30 PM

OK, I fixed the problem with my gearbox about a month ago. I took my car to a BMW specialist, munichlegends in Chelwood gate UK, who identified the problem as a faulty oil temp sensor. On the road test, the sensor was giving a temp reading of 90 degrees when it should have been operating between 30-50 degrees. The total bill was 632, with 160 of this just for the oil. They were very good and I will take my car there for future issues, servicing etc. The car since the fix has been brilliant, and has transformed the way it drives, the gear changes are really smooth.

grimma 11-13-2013 02:20 AM

Can I ask you a question? Are you talking about gearbox temp. sensor? I have an E60 with a automatic ZF gearbox and while driving I measured my transmission oil temperature with INPA. It was around 87 deg celsious. I experienced also certin gearbox gear hunting, flactuations.

bmw x5 - rmg 11-13-2013 02:20 PM

yes that's correct.

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