What causes the turn signal on the side mirror to stop working?

[StClayton]

The reasons why the turn signal on the side mirror stops working are as follows: Relay failure: To understand why the turn signal is not working, first check if there is power at the hot wire 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 signal lights up, it indicates a fault in the flasher relay, which should be replaced promptly. Excessive contact gap: You can also open the cover of the flasher relay to check if the coil and resistor are intact. If the resistor heats up and the contacts fail to close, press the movable contact. If the turn signal lights up at this point, it indicates that the contact gap is too large and should be adjusted. Turn signal switch failure: If the turn signal does not light up, another possible cause is a faulty turn signal switch. Use a screwdriver to connect the hot wire terminal of the turn signal switch to the left and right light wire terminals separately. If the light turns on, it means the turn signal switch is faulty and should be removed for repair or replacement.