Help! 645CI Parking Sensors Stopped Working.

[ElvisWedgely]

Can anyone give me any ideas why my parking sensors are failing. All of a sudden they have stopped working. The second I put the ignition on, PDC fail symbol is displayed on the dash. I have checked the relevant fuse in the boot and it's fine. Any other ideas for a solution would be most wecome as at the moment I'm all shook up.

Tony. TCB.

[village idiot]

If one fails the whole system stops. They are cheap as chips off fleabay but can be a bh to fit on the 6-series.

I think I paid a tenner each for the three that were shot on my 7-series when I bought it and they fitted in seconds, but I didn't need to remove bumpers or anything.

[inline6]

Hi just did this on my e60. To diagnose which sensor is faulty, switch your PDC on and place your ears close to each sensor on the bumper. You will hear a faint clicking sound on the ones that work. The faulty one wont make a sound. remove and replace with a replacement item. Bought mine off ebay for 15 quid. It was a rear bumper off job on mine. not sure about the 645 though.

[cindydog3]

Was previously on a similar thread re non working PDC sensors. Think my problem on 645CI may be PDC Module. Where does one locate it?