A pull-push solenoid can be used to switch between a car's high and low beam headlights by controlling the circuit. Typically, the pull-push solenoid is used as a headlight switch, and when the driver needs to switch from low beam to high beam, the circuit activates the pull-push solenoid to switch the light mode. This is a common way of controlling automotive circuits, which makes it easier for the driver to control the lights and improves driving safety.

When the driver switches to high beam mode, the push-pull solenoid is energized to produce thrust, which rotates the light blocking plate through a linkage mechanism to change the angle of the light from low to high, illuminating a further distance. If the driver only flashes the headlights, the solenoid can be switched on and off to achieve the effect, but if the high beam is used for a long time, the solenoid needs to be kept continuously energized. Therefore, the solenoid needs to be low-power and high-temperature-resistant, with a power of no more than 7W at DC12V to solve the heating problem, and the insulation level of the solenoid needs to reach Class B (130℃) due to the high temperature generated by the headlights. Therefore, the development of solenoids for car headlight high-low beam switching is more challenging than for ordinary solenoids, requiring strong research and production capabilities to ensure product quality.