What Causes the Car Turn Signal to Flash Rapidly?
2 Answers
Reasons for rapid flashing of turn signals include burned-out turn signals (same side), poor contact in turn signals, and inconsistent power or model of turn signal bulbs. The details are as follows: 1. Burned-out turn signals (same side): Common turn signals such as the right front turn signal, right front fender light, cornering light, and right rear turn signal—any of these bulbs burning out may cause the turn signal to flash too quickly when turning. 2. Poor contact in turn signals: Such as loose bulbs or poorly connected plugs. 3. Inconsistent power or model of turn signal bulbs: When replacing turn signal bulbs, using bulbs of different specifications or models, or bulbs with excessive or insufficient power, can lead to this issue.
Last time my car's turn signal was flashing unusually fast, like it was keeping a beat. It turned out one of the front or rear bulbs had burned out. When a bulb is out, the current in the circuit drops, causing the flasher relay to go haywire and flash twice as fast—this is the most common issue. As cars age, oxidized or loose wiring connections can also cause this. Remember to check which turn signal isn't lighting up first, then inspect the connections. A roadside repair shop mechanic can quickly diagnose it with a test pen, and replacing a small bulb only costs about twenty bucks to fix.
