Hi everyone I've got a 2005 s Type 2.7 . The rear parking sensors don't work at all not even making a buzzing sound. The module is wired up. Any ideas please

 

Fuse(s)

Relay(s)

Wiring Harness

Electrical connector(s)

Parking aid sensor(s)

Parking aid speaker

Reversing lamp switch

Parking aid module


That is what is in the repair manual in the order you check them. Battery negative must be removed before any work.

 

Any chance you can find another S Type and swap the module for testing?

And be sure and check the trunk and module for water/moisture. Look for old dried water stains under the spare. That's also a good time to air up your spare tire because it will be low!
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