If however you are having weird transmission issues like the 2-1 rough downshift. The car downshifting to early, or hard gear changes. Then you should 100% do a reset. Before you do the reset though, get your transmission fluid changed, make sure you drop the pan as this will release another quart at least.
It's not your X5 only, trust me. This is a known X5d issue. Both my 2010 X5d and current 2012 X5d have it and I hate it. Some people say it's a tranny problem, in which case I can see how reprogramming the transmission might work. Others say it's a turbo lag issue in which case I don't see how reprogramming the transmission would fix the problem.The fuse could be blowing due to a cut or chaffed wiring harness; shorting #48. Inspect the wiring beside the driver's knee area between the instrument panel and IHKA housing. Also, inspect the harness around the glove box (sharp edges), the water control valve, aux. water pump and between the fuse box and IHKA module. The problem is the P/N circuit inside the TR (transmission range) sensor. +++++ This prompts me to think I may have the same issue. The key word - "sensor". BMW car has as many sensors as one can imagine. What I did was to make sure I switch gears first between "Park", "Reverse", "Neutral" and "Drive" mode and then start my X5. Voila. Done. The
I recently bought a 2004 BMW X5 E53 3.0d. I can hear a vibration/humming noise between 2500-3000rpm no matter at what gear or speed I am going. It just makes this noise between these rpm levels. I don't notice any significant loss of engine power or acceleration at these levels. The engine seems to be working fine even the transmission.
The BMW M60 V8 engine was the predecessor to the M62. The M60 was used in the E32, E34, and E38 5-series and 7-series. This engine was considered to be one of the BMW greats, and was bulletproof in terms of reliability. However, in an attempt to keep up with the power of the other German vehicles of the era, BMW released the M62. transmission switch L1 - L4. , Transmission - selector - switch sensor faulty. I had the whole gear selector switch replaced in my BMW 530I e60 2005. Problem If the readings are off, the actions of the ECU will take into account faulty temperatures, something a transmission is very sensitive to. The X5 shares this harness with several other V8 BMW’s as well, the E39 540, E38 740i and iL, and the E31 840’s. eEuroparts carries this harness in both Genuine BMW as well as ZF, the OE Supplier. wEHH7I.