Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
1st thing to check is if the lights come on with the hazard switch?
If they do then it must be a fault with the indicator stalk or possibly the body control module
if they don't come on with the hazards then I'd say that the fault must lie with the rear wiring loom, so remove the trunk / boot carpet and trace it back into the car, checking for chafing and damaged wiring
the body control module should have its own fuse and sorry to say the only way to check that module is with a dealer level scan tool
this can run a diagnostic and check the CAN communication around the vehicle which I'd say is probably going to have to be the next step
it would also be worth checking the connector plug to the BCM it should be behind the passenger floorboard. Just pull the panel back and you'll see the BCM and the stereo amp.
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