My BMW 750li lost power and shut off while driving on the highway. What is a possible cause and solution thanx

BMW calls it a "Control Unit", for your car it's BMW part number 63126937223

https://www.ecstuning.com/BMW-E66-750Li-N62_4.8L/Lighting/Headlights/Xenon_Hardware/

Hi
No it wont cause any dammage, all that will happen is the system will reset, although not knowing the circumstances for the reason of the engine managment light being on may not possibly reset it and turn it off, unless what ever caused it has been repaired, most of the time, to reset the engine managment light you will have to get an OBD tool to do this.
hope this helps

common problem is lose drain plug or oil filer cap.Valve cover leak to. raise on lift and clean the engine.start shortly and rechek again.let me know the general location.front back left or right?

Take the door panel off and investigate ,then you will have a better idea as to the problem ,like is their power to the motor and then work your way back from their ,is the mechanism ok and not the lifting cables jammed up .No instant fix iam afraid

it could be the EGR valve or Mass airflow (MAF), you can check if its MAF by disconnecting it for a test run and see if it loses power then. do make sure you connect it back after checking.

BMW SUCKS

well the problem could be that you have a window down because bmw 7 series have the motion detector in the cars and wind can trip off the alarm. that could be the only thing i can think of that can be the problem. just try rolling up all the windows and close the sun roof.

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

Power steering does not seem to have any assist when at a stop. Tests/Procedures: 1. The power steering assist is speed dependent and should be quite easy when stopped/low speeds. This is controlled by a solenoid on the side of the steering gear box.

2. Check for faults in all control modules. The general module is what controls current flow through the solenoid. Clear all faults and see if power steering operation is normal.

3. At the servo, check for power and ground from the general module. If none present, check wiring back to general module connector X254, pin 9, Black/White and pin 11, Black/Red.

4. Replace solenoid as necessary.

5. Disconnecting the solenoid will remove the variable assist function, but the steering system should still have considerable assist. If it does not with the solenoid disconnected, consider hydraulic faults as the most likely cause. A failed power steering pump is much more likely than the steering gear. Potential Causes: Defective General Module
Defective Power Steering Control Solenoid
Defective Power Steering Pump
Damaged Wiring
If your cousin has access to wiring diagrams he will be greatly advantaged in diagnosing this issue Good luck

I had the same problem if you look in your owners manuel your code to your car is there if not vin # and the dealer should help.