What causes the turn signal to intermittently fail and then work normally?

[VonJaxson]

Possible reasons include loose wiring or a faulty flasher relay. Below is relevant information: Turn Signal: The turn signal is a crucial indicator light that activates when a motor vehicle is turning to alert surrounding vehicles and pedestrians. The turn signal bulb uses a xenon tube, controlled by a microcontroller circuit, with alternating left-right flashing in continuous operation. The turn signal employs a flasher to achieve the blinking effect. It can mainly be divided into three types: thermal, capacitive, and electronic. Flasher Relay: The flasher relay, also known as the flasher, functions to generate intermittent current, supplying the turn signal lights to make them emit an on-off signal light, indicating the direction of the vehicle's movement. The flasher is designed with a new circuit, consisting of a low-voltage switch circuit, high-voltage switch circuit, pulse generation circuit, dual-transistor amplification output circuit, and two sets of light indicator circuits.