So, if you want to identify the cause, then you will need to do a bit of troubleshooting. Here are the five common sources of a turn signal problem.
1) Dead Light Bulb
If your turn signal isn’t working, then you should first check the life of your light. A dead bulb is one of the more common problems that occur with blinkers. Like any lightbulb, a turn signal will eventually burn out.
If the bulb in your signal dies, then it’s a pretty straightforward fix — simply replace it with a new one. Turn signal lights usually last a few years, but they can die quicker if you use them often.
2) Faulty Turn Signal Switch
The turn signal switch is the device near your wheel which controls your signal. A faulty signal switch can’t send a signal to the blinkers to work. Sometimes the problem may lie in the wiring, or in the switch itself.
If the problem lies with the switch then it’s likely getting stuck in position due to the clock-spring. Regardless, the problem isn’t the blinker itself, but the device that communicates with it. This problem requires advanced knowledge of wiring to fix.
