What to Do When Both Turn Signals and Hazard Lights Are Not Working?
2 Answers
If both the turn signals and hazard lights are not working, it is recommended to check the vehicle's light switch and wiring harness for any short circuits as soon as possible; if necessary, visit a 4S shop for repairs immediately. The solutions for non-functioning turn signals and hazard lights are as follows: 1. Use a screwdriver to connect the power wire of the turn signal switch to the left and right light wire terminals respectively: if the lights come on, it indicates a fault with the turn signal switch, which should be removed for repair or replacement; if the lights do not come on, check the flasher relay. 2. Open the cover of the flasher relay and check if the coil and resistor are intact: if the resistor heats up but the contacts cannot close, it indicates a fault with the relay, and the contact gap should be adjusted if it is too large.
I've encountered the situation where both turn signals and hazard lights fail simultaneously twice. The most likely cause is a blown fuse, as they share the same fuse box location. You need to refer to the owner's manual to locate the dashboard fuse box, pull out the turn signal fuse and check if it's melted. If it's a 15A fuse, just spend a few bucks to buy a new replacement. If the problem persists after replacement, it might be a faulty flasher relay - this component is located near the fuse box and looks like a small square. Once I discovered this issue on the highway at midnight, immediately used fog lights as temporary warning signals, and got it fixed at a 24-hour repair shop in the next service area. It's recommended to keep some common spare fuses in the glove compartment for emergencies.
