What is the reason why the Corolla cannot switch to high beam?
4 Answers
Corolla cannot switch to high beam because the automatic headlights are turned on. Here are the relevant explanations: 1. Automatic headlights: Automatic headlights are light-sensitive control systems installed by some car manufacturers for user convenience. When the light intensity is greater or less than a certain value, the headlights will automatically turn on or off. 2. Notes: The activation of automatic headlights has a delay, meaning the headlights will only turn on automatically within a dozen seconds after the light-sensing system detects the dimming of light. According to traffic regulations, cars must turn on their headlights before entering a tunnel. Therefore, it is still necessary to manually turn on the headlights in advance when passing through a tunnel.
I've been driving a Corolla for almost ten years and have encountered the issue of the high beams not switching a few times, usually caused by a faulty switch button. The Corolla's high beam switch is on the turn signal stalk, and over time, the contacts can wear out or accumulate dust, leading to no response when switching. Another common cause is a faulty relay. The Corolla's relay is located in the fuse box and is prone to aging and failure. Loose wiring connections are also a culprit, especially in areas with high moisture like the chassis, where rusted connections can interrupt the signal. If all the lights are on but you can't switch them, prioritize checking the switch and relay. Once, I was too lazy to fix it and almost got into an accident while driving on the highway at night because it was too dark. I recommend going to a 4S shop or a professional repair shop for inspection as soon as possible. Replacing the parts isn't expensive, and safety comes first. Don't try to fix it yourself; you might end up damaging more things.
My Corolla recently can't switch to high beams either, and the experience is really terrible. I tried several times with no response. I asked a mechanic friend, and he said it's common for Corolla models to have a blown fuse. That fuse is in the main fuse box, protecting the circuit from overload—once it blows, you can't switch to high beams. Internal wear in the switch is another reason; the button can get stuck after long use. I thought about it myself, and loose wiring connections might be related—like checking under the hood to see if the plugs are secure. My friend also mentioned that newer Corollas have more electronic controls, and sometimes misoperation can lock the system, so try restarting the car. Safety can't be taken lightly—if high beams fail during night driving, the short reaction time increases the risk of rear-end collisions. It's best to take the car for a check-up—spend a little money to ensure safety.
The malfunctioning high beam switch on the Corolla is quite annoying, mostly due to issues with the switch button. Oxidation or damage to the contacts can prevent it from triggering. Relay failures are also common; they're easy to locate but difficult to remove. Wiring shorts are frequent, especially in older models. Safety first—stop by the roadside immediately to check or seek help.
