Insufficient VoltageĪnother possible reason why your turn signal suddenly starts blinking fast could be the insufficient supply of voltage from the car’s power system. You can use your test light or a multimeter.

A quick check on the wires would help you diagnose the problem. In essence, the ground connection going wrong can lead to your vehicle’s turn signals malfunctioning. Thus, there is no provision of correct ground connection, which hinders the turn signal from working. The turn signal wires may soon appear old and brittle, and with time there must have been some disconnection. With that in mind, some common causes of your car’s turn signal blinking fast include: Ground Connection Gone Wrong With none of the turn signals working, the problem could result from the car’s fuse and relays. Then, you may have to look out for some dark colorings once you get the bulb out. In some cases where you notice any of the turn lights not working, it could be due to a bad bulb, burnt from high amperage. Interestingly, the directional light is still working, signifying that they still receive power from the car’s battery. Let’s say you find one or both turn signals blinking fast. You may not necessarily see the lights blinking from within your car, but your dashboard’s indicators can reveal this issue. Why is my turn signal blinks fast, but all lights work? A quick check on your headlight and tail light, and notice your brake lights, reverse lights, and directional (turn) lights working. Nevertheless, other components like turn signal relays and turn signal fuses could also be the culprits. When the light of your turn signal starts blinking fast, it could be due to a bad bulb. In essence, it ensures that you keep safe driving and keep other cars from hitting yours. Undoubtedly, your car’s electronic gadget helps indicate the direction you’re turning while you drive. Such a situation may seem pretty worrying but, it is very common, and there are easy ways to fix such. But what happens with the turn signal blinking fast? The turn signal light comes in handy when the vehicle takes turns on the road. The use of the lights is among the basic things you learn from driving classes. Automobiles have various lights that perform specific tasks.

Turn signal bulb