Parking assist beeper thingys faulted

[steveatesh]

My car is fitted with front and rear park distance control, when I select reverse I get a single beep lasting a few seconds and the PDC button on the dashboard flashes. The sensors have stopped working, all of them.
(About a year or so ago I did have a rear sensor faulted but it didn't cause this symptom, just the single sensor didn't work and I replaced it myself.)

Handbook says this is an indication of a faulted system.
Anybody else had this?
Is it likely to be the main control module or one of the sensors?
Easy job to do it myself?

Cheers people

[divetheworld]

Mine did this. It was one of the sensors. Replaced it and all worked again.

[steveatesh]

Cheers, how did you identify which one it was?

[Sump]

If I recall one of mine wasn't making a clicking sound when you put your ear on the sensor. I replaced that one. Turned out to be a run of the mill sensor, got one from a BMW.

[steveatesh]

Sump said:

If I recall one of mine wasn't making a clicking sound when you put your ear on the sensor. I replaced that one. Turned out to be a run of the mill sensor, got one from a BMW.

I'll give that a go thanks