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What are the impacts of a faulty brake light switch in a car?

2 Answers

ChaseMarie

07/24/25 7:07pm

Here are the impacts of a faulty brake light switch in a car: 1. The brake light remains constantly illuminated; 2. Cruise control fails to function properly; 3. The battery may drain after parking; 4. For automatic transmission vehicles, the brake indicator light does not illuminate and no sound is heard when pressing the brake; 5. Cruise control often fails to shift gears automatically when activated. The method for replacing the brake light is as follows: 1. Use a Phillips screwdriver or socket to remove the bolts; 2. Pull the light assembly out from the rear pillar; 3. Rotate the socket counterclockwise and remove it; 4. Remove the old bulb and insert the new one. Additional information: The brake light is installed at the rear of the vehicle, with a red main body color. Its purpose is to enhance the penetration of the light source, allowing vehicles behind to detect the vehicle ahead in low visibility conditions, thereby preventing rear-end collisions.

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VanIvan

08/11/25 10:38am

Last time my car had this issue, it really screwed me over. The most dangerous part of a faulty brake light switch is that the taillights don't light up at all when you hit the brakes. The driver behind you has no idea you're slowing down - I nearly got rear-ended on the highway during rain! Automatic transmission drivers need to be extra careful, as this switch is connected to the gear lock. That time I was stuck at an intersection completely unable to shift into D, with cars honking like crazy behind me. The cruise control also went on strike - the system automatically shuts off when it can't detect brake signals. The most annoying part is some cars will even trigger false trouble codes, lighting up a bunch of warning lights on the dashboard. The repair isn't expensive though, just a small part replacement for about a hundred bucks. But if it burns out the entire brake light assembly, that's gonna cost you big time.

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