Can anyone out there help???
My PDC system stopped working last month and all I get now is a 4 second bleep when engaging reverse.
The car had to go in for routine servicing, I asked the BMW service dept to diagnose the problem. (extra £36 for this)
They said it was the PDC unit and would cost £140 to replace.
Now, me being a skin flint said no thankyou!!
I bought a s/h PDC unit and fitted it. Just the same still not working.
I tried the original and the replacement units in my friends bmw 320i and they both worked, so the PDC unit is OK, Fuse OK. I visually checked all the pins and plugs at the control box end and I cannot hear any ticking noises from any of the sensors so what next??
At last I am now going to ask the questions :- do the bumper sensors work in series ?, is there a master sensor ??, if one goes do they all go ??? and finally what else can I check?