Maybe stupid question but can the sensors be tested off the car to see/hear if they are working/clicking?? :shrug:

Resolution?
 

hi - did you ever resolve this problem? I have EXACTLY the same problem.

Have you used TOAF, and if so did the fault occur before or after using it?

Did you check the wiring loom behind the bumper for corrosion at the joints, worth taking a look ;)

You can try this. Principal should be the same possibly with different readings.https://www.jaguarforum.com/showthread.php?t=12088

Hi - thanks for all of your replies. So it DOES work, but only for one 'ignition on' cycle, and where I unplug and replug in the sensor connector. Then does everything it's supposed to. As soon as the ignition is turned off, no sound from the speaker, although the sensors do their clicky thing.