If you’re getting the yellow Brake light with the “parking brake malfunction” message on your BMW X5 E70, here are your fixes:
1) make sure your car battery has good voltage, put the car in ignition 2, push on the brake pedal, push on the parking brake button for five seconds to reset the parking brake actuator
2) If it doesn’t fix the problem you have to manually release your parking brake. Refer to the manual or other KZfaq videos which show how you can access the parking brake emergency release cable in the trunk and use the special tool included to release the parking brake. Try resetting the Brake as described in step one
3) if it doesn’t solve the problem try removing the parking brake fuse and putting it back again. This method has worked for some other people as you may find another KZfaq video from Australia
4) if you can’t get it to work at this point you need to delete the error codes in the car computer by connecting a special cable and using a laptop or a BMW tool to check the errors and reset the parking brake. Do this before trying hardware repair on the actuator.
5) If after trying all the solutions above you still cannot get the parking brake to work you need to follow the steps described in the video to disassemble the parking brake and get the actuator out and repair it. The repair Could involve replacement of the motor replacement of the whole module or repair of the cables.