nothing it could just be the tail lights coming on.
Check around brake pedal for something rubbing. If OK, I'd look into the master cylinder.
There is an electronic relay switch which turns on the rear brake lights-It's located behind the brake pedal- It clicks when you push the pedal down, making contact.
The brake light switch on a Nissan is located just behind the brake pedal. It sends a signal to the brake lights when the pedal is pressed to turn them on.
Brake pedal will be soft if the front pads are seized in the slides..and/or your rear brakes are dirty and out of adjustment. Pull up the park brake slowly and count the clicks it goes up More than 5 clicks...needs rear brake adjustment
Sticking Brake LightsI had this very same problem when I owned a Nissan 300zx. There is a switch in front of the brake pedal that when the brake pedal is pressed the metal part of the pedal presses down on a little button which turns the brake lights on when pressing the pedal. What I did was I got under the dash, took a flashlight and put a little piece of tape in between the pedal and the switch. It acted as a cushion because the pedal wasn't pushing down on the switch as it was pushing on the tape and when I pressed on the pedal the lights would come on but the tape pushed the pedal back to shut the switch off. If you want to avoid all this consider having your brake pedal adjusted. If your brake lights come on still consider having your cars wiring checked out.
Brake pads are the pads that sit on top of the rotor that when the brake pedal is pressed the brake pads squeeze the rotor and the car stops. Signs that they need replacing are if you hear squeaking when pressing the brake pedal.
In a 1999 Hyundai Excel, the brake light switch is typically located near the top of the brake pedal assembly. It is mounted on the bracket that holds the brake pedal and is activated when the pedal is pressed. To access it, you may need to remove the lower dash panel for better visibility and reach. If you're having issues with the brake lights, checking this switch can help diagnose the problem.
On a 1978 Porsche 911 SC, the brake light switch is located on the brake pedal assembly. It is typically mounted on the pedal cluster, near the top of the brake pedal. To access it, you may need to remove the carpet and cover under the dashboard. The switch is activated when the brake pedal is pressed, completing the circuit for the brake lights.
My Brake tail Lights Stay on when my car is complete turned off and my lights are off to.
The brake pedal sensor is typically located near the brake pedal assembly in the vehicle's interior. It is mounted on or near the brake pedal itself, sometimes attached to the bracket or the pedal arm. This sensor detects when the brake pedal is pressed and sends a signal to the vehicle's electronic systems, such as the brake lights and anti-lock braking system (ABS). Depending on the vehicle model, the exact location may vary slightly.
Most brake light switches ratchet into position and self-adjust. To reset the adjustment, press the brake pedal part way down & pull the switch out toward the pedal until it clicks several times.
On a 2003 Chevrolet TrailBlazer, the brake light switch is typically located above the brake pedal, mounted on the brake pedal assembly. To access it, you may need to remove the lower dashboard cover or panel. The switch is usually a small component that activates the brake lights when the pedal is pressed.