Hi everyone - bit of guidance required on a PDC issue please.

I've (just) got a 2011 4.4 TDV8 - I am immediately in love but already, the gremlins are strong. It was sold as having "intermittent" parking sensors which didn't really both me as the spec was what I wanted but further use has revealed the button appears to be completely dead - no beeps, etc. However, the reversing camera works fine with all graphics etc.

Could this still be the module?

Thanks a mil.

If the button does not flash at all then IME it's the PAM ( Parking assist module). Unfortunately they are prone to failure due to water ingress

Great thanks - and this would be the issue even with the camera working? I'd thought, probably incorrectly, that this would be dead too if the PAM was knackered...

I had an Adaptive Dynamics unit repaired before for my old L322 which had got wet - it was significantly cheaper than a new unit and didn't need to be recoded... With a bit of luck, I can find them again!

The reverse camera is not connected to the PAM (which is either a good design or accident by JLR) 2012 TDV8 Vogue (L322)

Cracking - thank you!

I have a similar problem but the LED is always on (with ignition) but the cameras seem to be fine although the delay annoys me.

Also chucks B1B54-12 Function LED - Short to Battery (2f)

Interestingly, all the sensors give a sensible reading in IID and respond to obstruction.

I'd bet on it being the PAM, but with fairly localised shmoo bleeding voltage from IGN to the LED somewhere on the board.

I have to fit a new battery tomorrow morning but I'll pull the PAM and look up its skirt if I have time afterwards. 2011c Vogue SE 4.4 Oil Burner
1991 Hilux 2.4d MkIII. Sadly goone due to space and time.
2008 Skoda Octavia Scout
2000 TVR Tuscan 4.0
Loads of crap. Gone

Sorry to hijack but having just acquired myself a 2012 TDV8 Westminster and working through the inevitable teething troubles, as this isn't one of them could someone tell me where the PAM is located so that if possible I can take some preventative measures to protect it?

Many thanks

Shaun 2012 TDV8 Westminster in the New Forest

Also: Land Rover Series 3 SWB, Mercedes 280SL, Classic Mini race replica, VW Golf SV
Previously: Audi A8, RR TDV8 Vogue, Audi Allroad, VW Golf GTI Edition 30, Audi A4 Avant, A8, A4 Sport, A6, VW Golf Mk5, Bora, Golf GTI Mk3, Jetta Mk3, Passat, Jetta Mk1, Golf Mk1

It's located behind the flap at the left rear of the luggage compartment. Lower rear with three plugs inserted from above.
Had mine out today and it was immaculate with no sign whatsoever of water ingress. Internally, it looked new. Totally unlike the month old loaf appearance that the failed ones posted here show. While this is good it's also tricky as the other options are the PAM switch or the wiring, neither of which are anywhere near as easy to fix as a manky module.
Ho hum. I'll need to dismantle the climate control panel now.😬 2011c Vogue SE 4.4 Oil Burner
1991 Hilux 2.4d MkIII. Sadly goone due to space and time.
2008 Skoda Octavia Scout
2000 TVR Tuscan 4.0
Loads of crap. Gone

I've got a 2010 facelift model and parking sensors weren't working. Ordered and fitted a new PAM (previous one had most definitely failed due to water ingress with much green corrosion). I'm now getting the warning tone and flashing parking sensor light that is telling me that the system is inactive. Have plugged the OBD scanner in to look for codes and get:

B1B40-01 Permanent: Left front outer sensor
B1B42-96 Permanent: Left front inner sensor

So looks like I either need to replace the front left sensors or there is a wiring fault. However I'm not getting any rear sensor errors, but the parking system still gives me the error tone and flashes in reverse gear.

Does that mean that there are still problems with the rear sensors (but the scanner/PAM isn't picking them up) OR does the whole system stop working if there is a fault (either front or rear)? In which case will fixing those front sensors also get the rear ones working.