Why is the position light indicator always on in the car?
4 Answers
It is normal for the position light indicator to be on in the car because the position lights and headlights are interconnected. When the headlights are turned on, the position lights also illuminate, and this is not caused by a malfunction. However, if the position light indicator remains on when the headlights are turned off or the headlight switch is in the OFF position, you should check whether there is poor contact in the headlight switch. Methods for maintaining car lights include: 1. Preventing water from entering the headlights; 2. Regularly replacing bulbs, as they are consumable items and should be replaced promptly; 3. Periodically checking whether the lights are functioning properly, and repairing any issues immediately; 4. Cleaning the lamp covers promptly when they are dirty, as dirt can affect illumination.
As a truck driver with twenty years of experience, I've seen this situation way too many times. That marker light indicator is on, most likely because you forgot to turn off the marker lights after parking. I made the same mistake last week while unloading, and the next day the battery was completely dead and couldn't start the engine. Some car designs are more thoughtful, beeping an alarm when you open the door to remind you to turn off the lights, but older models don't have this feature. If you're sure the switch is off but the lights are still on, it might be due to damp wiring causing a short circuit, especially common during the rainy season. Check it immediately—not only does it drain the battery, but other drivers can't see your car's outline clearly, which could easily lead to an accident.
My wife's car had the same issue last year. When she picked up our child from school, she noticed the parking light indicator on the dashboard stayed on. It turned out that the light control knob got stuck at the parking light position when she turned it. The mechanic mentioned that newer models now use electronic switches, which are actually more prone to accidental activation. Here's an interesting fact: some German cars automatically activate parking lights when you turn the steering wheel after engine shutdown - it's a safety feature designed for roadside parking, and they'll turn off automatically upon restarting. My suggestion is don't rush to the repair shop yet. Take photos of your light switch position and dashboard, then post them on automotive forums to get advice from fellow car enthusiasts.
Just helped a neighbor with a similar issue. The width indicator light on his SUV stayed on all day, which was actually caused by a short circuit in the license plate light wiring triggering the alarm. Upon inspection, we found the corresponding 10A fuse in the fuse box burnt black. Replacing it with a new one costing just three dollars fixed the problem. This situation is particularly common in vehicles over five years old, as the rubber insulation on the wiring tends to degrade, making it prone to grounding when encountering bumps. If the fuse blows again after replacement, focus on checking the wiring harness in the trunk. Also, a quick reminder: many vehicles now have LED light modifications that alter resistance, which can also falsely trigger light alarms.
