What causes the turn signal to flicker on and off?
2 Answers
The reasons why the turn signal flickers on and off are: 1. The turn signal bulb is burnt out, has poor contact, is loose, or the plug connection is faulty; 2. The power or model of the turn signal bulb is inconsistent, leading to excessive or insufficient power; 3. The design of the combination switch or instrument circuit is different, causing a malfunction; 4. Poor wiring connection, poor grounding, or incorrect bulb installation. Solutions for a flickering turn signal: 1. Replace the filament of the turn signal bulb; 2. Reconnect the bulb to the socket; 3. Replace the bulb with a higher power one; 4. Inspect and repair the wiring of the turn signal.
Recently, my car also experienced the issue of the turn signal flickering intermittently, which was quite a headache. I think the most common cause is poor bulb contact or looseness, especially since cars vibrate frequently, causing the bulb socket to shift easily. Secondly, aging or short circuits in the wiring are also critical, particularly during rainy and humid conditions, when wire connections can become problematic. Additionally, if the flasher control box is faulty, it can also cause the light to flash irregularly. I remember last time when I was on a long drive and the light kept acting up, I drove straight to the repair shop, and sure enough, the bulb was about to fail. Safety-wise, it's very important—a malfunctioning turn signal can mislead other drivers and easily lead to accidents. So, it's best to check it as soon as possible and never delay repairs.
