check all fuses
check you have a power supply to rev switch
check reversing switch is working yes/no
if not, bridge the switch wires together, if sensors and lights now works replace the reverse switch.
wirecutterman
February 2010
I can answer this question...
my rear parking sensers on jag x type are broke. help?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.