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check the main earth wire near the battery. and one near the rear of the lights. unbolt them and clean the connectors up put some grease on them after. then check again. remember that when the earth wires come off the radio code will be needed to reset the the radio. be safe and take the battery off.
The hazard switch gets power from the horn fuse which is hot all the time, and from the turn signal fuse which is hot when the key switch is on. The turn signal switch gets power from the hazard switch and both use the same flasher. So if the turn signals work but the hazard switch does not power the lights, and both fuses have power, I would say the problem is inside the hazard switch.
That should be on two different fuses, but everything goes thru the turn signal switch. The switch might be faulty. A mechanic would check for voltage there.
in new cars, especially premium ones have digital circuits for signals and flashers. they are seperate on BMW for instance. if only flasher is problematic reason can be the switch itself.
{: ) Looks like your lightings got haywired. Have you had vehicle repairs recently? Anyway, it seems that you have poor grounding connections for the affected lightings. Some circuits share common ground, and ground terminals are strategically distributed on the vehicle. If these grounds don't have good contact with the body, chassis, or engine ground, circuit functions are badly affected. Thats why these ground points should be inspected and kept clean and tight, maintain that good wire and terminal contacts.
We can start with G100 located at the Left Front of the Engine Compartment on the left front body mount. See diagram below:
Check out also G401 which is located in the chassis harness, mounted to the left rear Body mount. This ground point is shared by the rear lamps like the brakes, reverse, and rear signal lamps.
If possible check also other ground points that you may visually come across while on your search. Be sure also that fuses are all inspected good.
I hope we get lucky in finding and fixing a certain lamp function, if not all. Goodluck.
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