Why does the brake light of the new Jetta stay on after releasing the pedal?

[AliceDella]

New Jetta brake light always stays on for the following reasons: 1. Brake fluid function: Lack of brake fluid is an indispensable part of the vehicle's braking system. When the driver steps on the brake pedal, the force applied is transmitted by the piston in the master cylinder through the brake fluid to the wheel cylinders located at each wheel, causing the brake pads to contact the wheels and stop the vehicle. 2. Insufficient brake fluid: If the tail light bulb is damaged or the brake fluid level in the reservoir falls below the minimum line, the sensor beside the reservoir will detect this and reflect it through the brake warning light on the dashboard. If the brake fluid decreases rapidly, it indicates a leak in the braking system. 3. Severely worn brake pads: The light will also stay on if the brake pads are severely worn, requiring replacement.

[NorahFitz]

I've encountered this issue before. When driving a new Jetta, the brake light stayed on even after releasing the pedal, most likely because the brake light switch got stuck. That little component under the pedal didn't spring back after pressing, keeping the light on. Leaving it like this for long isn't good—your car's battery could drain, and other drivers might think you're braking, increasing the risk of a rear-end collision. Check if there's any debris blocking the pedal linkage. If you're handy, try prying the switch to reset it; otherwise, head to a repair shop for a replacement. This is a common problem with new Jettas—don't let it escalate into bigger trouble. During maintenance, remember to clean the pedal area to prevent dust buildup, ensuring safer driving. As an experienced driver, I've seen many similar cases—addressing it promptly saves hassle and keeps you safe.

[LeRachel]

The constant illumination of the brake lights in the new Jetta may be due to an issue with the electronic control module. If the computer does not receive the signal to turn off after releasing the brake pedal, it can cause a short circuit in the relay or wiring. I've encountered similar issues with this type of car over the years. Don't rush into unnecessary repairs—first, simply test the rebound force of the brake pedal. If it feels normal, check whether the corresponding fuse in the fuse box has blown. Modern cars come with smart systems, and faults can easily trigger false warning lights, such as fault codes appearing on the dashboard. Using a mobile app connected to an OBD diagnostic tool to read the codes can save time and effort. Remember, regular maintenance of electronic components is crucial. Repair issues early to avoid accidents during nighttime driving—safety always comes first.

[VanAutumn]

A constantly illuminated brake light is highly dangerous. If it remains on after releasing the pedal, it indicates a potential malfunction or sticking in the switch, which may mislead following vehicles in traffic and cause accidents, while also draining the battery. This issue isn't uncommon in new Jetta models. I've found it's mainly caused by aging pedal mechanisms leading to switch jamming. Check if the pedal resets properly when parking, and seek professional inspection if necessary. Don't underestimate this problem - long-term neglect can disrupt the entire lighting system and result in higher repair costs.