Quote:
Originally Posted by cpie168
Did you try to troubleshoot each sensor? I did that by taking a folded step ladder and walk from far towards the sensor. You’ll have to put the vehicle in park and then hit the PDC button first. If you don’t hear the beeps, then you know it’s not working for sure.
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You cannot test the system if it's in failure mode like this - a single failure in the system disables the entire system.
Easiest why to diagnose it is with a BMW scan tool - this will tell you exactly which sensor (or wiring path) is causing the system to go into "failed" mode.
Mine is currently like this too - in my case INPA is telling me the front left sensor sensor has failed. It comes and goes - I'm living with it while the part ships.... and I figure out a way to change the sensor without dropping the front bumper.
Yes, I know you have to drop the bumper (on a facelift) bit this ONE front sensor can be accessed from the left tow-hook hatch, using dental tools to release the catches etc. It's like key-hole surgery but I think it's possible. I've pretty-much had the old sensor out this way...
