KevinD3 wrote:

I’ve copied the below from the workshop manual, apparently parking sensor “tell you” what wrong the second ones sounds about right with your description?

Diagnostics
The parking aid module has a diagnostic connection via the medium speed CAN to enable faults to be retrieved using T4.
Additionally, an on-board diagnostic routine within the parking aid module constantly monitors the system and alerts the driver to a system fault by emitting a tone from the front or rear sounder, depending on the fault.

If a parking aid system fault has occurred, the parking aid module will relay the occurrence of the fault to the driver in the following ways:
The status LED will flash at a frequency of 2Hz if the system is active and fault is detected in the sensors, sounders, related wiring or the module.

The front sounder will emit an error tone for 3 seconds at a frequency of 1500Hz if a fault is detected with the front sensors or the rear sounder develops a fault.

The rear sounder will emit an error tone for 3 seconds at a frequency of 1500Hz if a fault is detected with the rear sensors, the switch, the LED in the switch or if there is a CAN bus error.

I finally got around to getting the rear sounder out, and now the beeping has stopped, so I guess my hearing is broken as when I plugged it back in I could here the long beep again when I switched the ignition on, so the beep was from the back and not the front

As the LED is flashing constantly in the switch I am thinking it is more this problem:

Quote:

The status LED will flash at a frequency of 2Hz if the system is active and fault is detected in the sensors, sounders, related wiring or the module.