What Causes Poor Contact in the Turn Signal Lever?

1 Answers
McEmmett
07/30/25 6:08am
1. When turning on the left or right turn signal or hazard lights, there is no normal (beeping) sound, and the turn signal does not light up. This situation is generally caused by two reasons: either the flasher relay is damaged, or the turn signal fuse has blown. The former can be replaced by yourself, while the latter requires carefully checking the turn signal circuit for any short circuits before replacing the turn signal fuse (usually, the turn signal fuse is marked with a pattern or text in the car's fuse box). Additionally, because flasher relays vary by vehicle model, they generally have three sockets, so it's important to purchase a flasher relay that matches your vehicle model. 2. When turning on either the left or right turn signal, the flashing frequency of the left and right turn signals is inconsistent—one side flashes faster, and the other slower. This phenomenon is mainly caused by the left and right turn signal bulbs having different power ratings or poor contact somewhere in the turn signal circuit (most commonly at the connector). 3. When turning on either the left or right turn signal, it works normally, but when the hazard lights are turned on, one side does not light up. The main cause of this phenomenon is a faulty hazard light switch, and replacing the hazard light switch should resolve the issue. 4. When turning on any turn signal, only a sharp squeaking sound is heard, and the light does not illuminate, but the noise stops immediately when the signal is turned off.
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