What Causes Car Turn Signals to Stay On Without Flashing?

[McIsabelle]

Reasons why car turn signals stay on without flashing: blown turn signal fuse, short circuit in power circuit or lighting system; burned-out flasher relay; damaged turn signal switch. Check if the turn signal fuse is blown. If connecting the two terminals of the flasher and the turn signals don't light up when the turn signal switch is activated, but all turn signals light up when the hazard warning switch is activated, this indicates a fault in either the turn signal switch or the wiring between the switch and flasher. Turn signal working principle: The lamp uses xenon tubes with microcontroller-controlled circuits that alternate left-right flashing continuously. Types of flashers: Based on structure, they can be divided into resistance-wire type, capacitor type, and electronic type. The resistance-wire type can be further classified as thermal-wire type and vane type, while the electronic type can be divided into hybrid type and fully electronic type.