Why is the left turn signal flashing faster?

[CharlesFitz]

Generally, when a bulb burns out, the total current of the turn signal decreases, causing changes in the circuit constant or voltage drop. Here is a detailed analysis: 1. Current sensor: When there is a turn signal failure, the filament current will change, and the circuit will detect this issue and trigger an alarm, i.e., flashing. Of course, newer vehicles may use LED lights, which draw much less current, and might employ chip detection. However, regardless of the method, the detection principle remains the same. 2. Function of turn signals: When a vehicle turns, the flashing indicator lights in the corresponding direction are activated to alert pedestrians or vehicles in front or behind, indicating the vehicle's intended direction. If a light is faulty, it may prevent other vehicles or pedestrians from understanding the vehicle's direction, easily leading to traffic accidents.