My 2006 bmw 750li is showing transmission fault

BMW
you can replace the ECU used or refurbished
just needs a diagnostic scanner to re set all the other electronic modules and sensors keys including anti theft and air bags

BMW has been using electronically controlled automatic transmissions in most models since the late 80s. These transmission systems employ a transmission control unit which controls electrical solenoids to manipulate the various control and shift valves and functions in the transmission valve body. When the transmission control unit detects a problem that it thinks could be damaging to the transmission or engine, it goes into a fail-safe or limp mode. In this mode, the transmission will function in reverse normally, but in forward it will operate in only one gear (whether you have the shifter in D, or any of the lower gears). This will typically be 3rd or 4th gear, depending on the model. It will start in this gear and stay in this gear with no shifting. You would experience this as sluggish acceleration and higher than normal engine speed at about 40 mph and above.

If you must drive the vehicle when the transmission is in the fail safe mode, accelerate gently and keep the road speed lower than full highway speed.

Earlier models do not employ fault codes and must be diagnosed manually. Late models do employ fault codes and a diagnostic/scan machine can be used to check and read the faults to assist in diagnostics. Note that this is not your common OBDII engine management fault code tool. This is what A BMW dealer or a properly equipped independent shop would have for full vehicle system diagnostics and coding operations.

Typically you pour it down the tranmsission's dip stick tube.) Use an appropriate funnel for the purpose. Be sure to follow the instructions in the owner's manual for how to measure transmission fluid level before you proceed. Normally you should not have to add fluid as it is not consumed.

You should have the control module checked by a tech as either their is too much slippage or it is interfering with the anti-lock system.

Hi, I purchased a 2006, BMW 750li 7 months ago..this car has 71,000 miles and I hardly drove it since buying it.However, I noticed that fluids was leaking and to my a long story short, I took it the the BMW dealership-they changed the oil pan, but the reason for going was because it started showing transmission fault, and when I put the gear in drive it jumps back to park-on top of a very hard jerk when I put into drive to drive off. I ask the dealer to re set the fault control, but the car is doing the same thing..anyone has a solution to this problem? The said I need a transmission, and it will cost $7,700.00

There is a allen fill plug on the side of the tran towards the back.the trans temp should be around 50 deg c,with the engine running remove the plug,the fluid should just trickle out of the fill hole.

The electronic control modules that control BMW transmissions have historically been very sensitive to the quality of the electrical supply. The first step in diagnosing erratic transmission behavior is always to first make sure that the battery is in good shape, the connections and ground are clean, and the alternator is putting out a strong clean DC charge.
Once that possible problem is eliminated, if the problem persists, you will need some high quality transmission expertise.

You mused in I-Drive set RPA/RDC and reset it

IF YOU ARE GETTING A THROTTLE PEDAL POSITION SENSOR FAULT CODE.THE THROTTLE POSITION SENSOR IS THE WHOLE THROTTLE BODY UNIT IS THE THROTTLE POSITION SENSOR.THE SENSOR NOT IN GAS PEDAL LIKE VOLKSWAGON. VOLKSWAGON HAS THE ACCELERATOR PEDAL POSITION SENSOR.

hi, this could be your battery loosing voltage, check it with a volt meter to see if it reads between 12v - 12.5 v if it is low it might need replacing, you could also check your alternator to see if it is charging correctly you will find your car will be stuck in either 3rd or 4th gear ( limp home mode ) hope this helps please vote thanks