Remote locking problems E39.
My 530d has recently started giving intermittent remote locking problems. Sometimes the key will lock or unlock the car and all is fine. However other times it refuses to do anything and I end up unlocking the car manually with the key which unlocks all the doors but doesn’t deactivate the alarm. That is if I had managed to lock the car with the remote in the first place. I’ve gone through the key reprogramming procedure as described elsewhere but to no avail. I’m presuming and hoping that the problem is a loose or broken connection either in the wiring or in the control module that controls the locking. This leads me to my question as to where the relevant modules are located? Is there a separate sensor and controller or just one module. Any assistance that can be provided is appreciated.