Why are the turn signals and hazard lights of the Buick Excelle not working?
1 Answers
Turn signals and hazard lights not working are usually caused by a faulty flasher relay. Turn signals are important indicator lights that are turned on when a motor vehicle is turning to alert vehicles and pedestrians around. The turn signal bulbs use xenon tubes, controlled by a single-chip microcomputer circuit, with left and right alternating flashes working continuously. Below are the troubleshooting methods for non-functioning turn signals: 1. First, check if there is power at the power terminal of the flasher relay. If there is no power, check for any open circuit between the wire and the power source. 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 that should be replaced promptly; 2. If they still don't light up, 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 fail to close, press the movable contact; if the turn signals light up at this point, it indicates a relay fault; 3. If the turn signals still do not light up, the issue may be with the turn signal switch. Use a screwdriver to connect the power wire of the turn signal switch to the left and right light wire terminals separately. If the lights come on, it means the turn signal switch is faulty and should be removed for repair or replacement.
