What are the reasons for the car turn signal not lighting up?
2 Answers
When the car turn signal does not light up, it needs to be discussed in two scenarios. If the turn signal does not light up after being turned on, it indicates a fault with the turn signal bulb, which needs to be replaced. If the turn signal remains constantly lit without flashing after being turned on, it suggests a malfunction in the flasher relay, and you can try replacing the fuse inside the relay. The functions of car turn signals: To alert pedestrians and other vehicles about an upcoming turn or U-turn, as there are many blind spots while driving, so activating the turn signal reminds others to avoid in time. On highways, turn signals are used when overtaking or changing lanes to inform surrounding vehicles and prevent accidents. Additionally, the flashing indicates an emergency situation, typically used in sudden circumstances to alert other vehicles to stay safe. If the lights do not illuminate after being activated, it proves that there is an open circuit in the wire between the flasher and the fuse, and the location of the open circuit should be checked. If the lights remain constantly lit after activation, the fuse in the flasher relay needs to be replaced. If all lights flash when the hazard lights are pressed, it indicates a damaged turn signal switch or an open circuit between the switch's live wire terminal and the wiring harness.
The other day while driving, I noticed the turn signal wasn't flashing at all, and I thought 'here we go again.' As an old car enthusiast who's driven many vehicles, there are several common reasons why turn signals stop working: it could be a burnt-out bulb with a broken filament; or a blown fuse - just find the corresponding one in the fuse box and replace it; another possibility is poor wiring contact, where a loose or corroded connector causes an open circuit; if the flashing frequency seems off when signaling, it's likely a faulty relay. Malfunctioning turn signals are quite dangerous - last time I almost had an accident while changing lanes, so I immediately pulled over to inspect and repair. During regular maintenance, check bulb lifespan and replace them proactively when they've been in use for a while to avoid unexpected issues.
