Intermitant faults
 

Intermittently the drivers air bag warning light comes on or the rear parking sensor sounds continually when in reverse or the message comes up no DSC. Or I get all three or any combination. Any ideas. Alan.

#1 suspect - battery on its way out.

Probably one of the cheapest and easiest things to change DIY.

Plus 2? On the battery. Jags act weird when the battery starts going south.

Intermitant Fault
 

Battery only 18 months old but just had it tested at Halfords just in case found OK. Looks like a visit to Jaguar main dealer!!!

Next idea - water/damp in boot (trunk). Remove spare and check very very carefully.

Intermitant fault
 

Boot dry as a bone no loose connections.

All 3 faults just started at the same time? You need to stare at the wiring diags!

Intermitant faults
 

Just had the car into main jag dealer
Air bag fault caused by faulty cancellation cassette module
Module replaced
Parking aid fault was o/s/r inner park sensor faulty
Told them not to bother with it
DSC message fault no fault found
Total cost £312
O happy days.