What Causes the Buick Excelle's Turn Signals and Hazard Lights to Not Work?

[OLucy]

The Buick Excelle's turn signals and hazard lights not working could be due to a blown fuse or a burnt-out bulb. It is recommended to promptly check the vehicle's light switches and wiring harness for any short circuits and, if necessary, visit a 4S shop for repairs as soon as possible. Below are the reasons and solutions for the Buick Excelle's turn signals and hazard lights not working: Faulty Relay: Check if the power terminal of the flasher relay has electricity. If there is no power, check whether the wire to the power source is broken. If there is power, use a screwdriver to connect the two terminals of the flasher relay. If the turn signals light up, it indicates a faulty flasher relay, which should be replaced. Inspect the Flasher Relay: If the lights do not turn on, inspect the flasher relay. Open the flasher relay cover and check if the coil and resistor are intact. If the resistor heats up but the contacts cannot close, press the movable contact. If the turn signals light up at this point, it indicates a faulty relay. Adjust the contact gap if it is too large. If pressing the movable contact to close the contacts still does not light the turn signals, use a screwdriver to short-circuit the contacts. If the lights turn on, it indicates oxidized contacts. Faulty Turn Signal Switch: If the turn signals do not light up when the two terminals of the flasher relay are short-circuited with a screwdriver, the turn signal switch may be faulty. During inspection, use a screwdriver to separately connect the power wire of the turn signal switch to the left and right light wire terminals. If the lights turn on, it indicates a faulty turn signal switch, which should be removed for repair or replacement.