What are the reasons why the brake light of Volkswagen Jetta is always on?

2 Answers
VanGarrett
08/31/25 5:12am
Reasons why the brake light of Volkswagen Jetta is always on: 1. Lack of brake fluid; 2. Damaged tail light bulb; 3. Severe wear of brake pads. The length, width, and height of Volkswagen Jetta are: 4419mm, 1841mm, and 1616mm respectively, with a wheelbase of 2630mm, a fuel tank capacity of 51l, and a trunk capacity of 482l. The front suspension of Volkswagen Jetta is MacPherson independent suspension, and the rear suspension is multi-link independent suspension. It is equipped with a 1.4t turbocharged engine, with a maximum horsepower of 150ps, a maximum power of 110kw, and a maximum torque of 250nm.
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DanielFitz
09/12/25 8:28am
My Volkswagen Jetta drives pretty smoothly, but I've encountered the issue of the brake light staying on constantly. It happened when I was out for a drive, and after parking, I noticed the taillights were still shining brightly, which was quite alarming. I tried checking it myself and found that the switch under the brake pedal was stuck—that little thing senses brake action, and when it gets stuck, it can't reset, causing the light to stay on. This is pretty common in Volkswagens, especially older models. A quick fix is to turn off the engine, crouch down near the pedal area, and try manually pushing the switch. If the light goes out, it's almost certainly a faulty switch. If left unrepaired, it can drain the battery, leaving you unable to start the car the next day. Plus, at night, other drivers might think you're constantly braking, increasing the risk of rear-end collisions. So as soon as I noticed the issue, I took it to the shop to replace the switch—it didn’t cost much, and safety always comes first.
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