If the fluid is full then you have an electrical, or switch problem. You will need to have a service manual if you are going to diagnose yourself.
Add brake fluid
Should reset when fluid added--may be defective sensor in reservoir
To reset the brake light on a 2003 CLK320, first, ensure that the brake fluid level is adequate and check for any issues with the brake system. If the fluid is fine, turn the ignition to the "ON" position without starting the engine. Then, press the brake pedal several times, which may help reset the brake light. If the light persists, it might indicate a more serious issue that requires a diagnostic check.
To reset the brake light on a 1991 Mercury Capri after changing the front brake pads, first ensure that the brake fluid level is correct, as low fluid can trigger the light. If the fluid is fine, check the brake light switch, usually located near the brake pedal, to ensure it’s functioning properly. You may also need to disconnect the car battery for a few minutes to reset the dashboard warning light. If the light persists, consult the owner's manual for specific troubleshooting steps.
The light should not have to be reset. The most common problem is low brake fluid, caused by a leak in the system. If the fluid is low fill the reservoir to make the light go out then check the wheel cylinders, as they are the most common leaking points.
If you are talking about the red light on the dash then you don't "Reset" it you need to have the brake's serviced or fill-up the fluid in the reservoir. I light is designed to come on if the fluid is low.I also advise you get it serviced if the fluid has not been changed in the last 24 months.Hope This Helps
You will need a compatible BMW scan tool to reset this service light from the I drive system.
To reset the brake warning light on a Porsche 928, first check and ensure that the brake fluid level is adequate and that the brake system is functioning properly. If the fluid level is correct and there are no issues, turn the ignition to the "on" position without starting the engine. Then, press the brake pedal several times; this should reset the warning light. If the light remains on, it may indicate a deeper issue that requires professional diagnosis.
To reset the Brake Lamp Light on an Acura, first ensure that the brake fluid level is adequate and that there are no issues with the brake system. Turn the ignition to the "ON" position without starting the engine. Then, press the gas pedal three times within five seconds. This should reset the Brake Lamp Light; if it remains on, check for any underlying issues with the brake system.
To reset the brake light indicator on a 2005 Mazda 3, first, ensure that the parking brake is fully released. If the light remains on, check the brake fluid level and top it off if necessary. If the issue persists, disconnect the negative battery terminal for a few minutes to reset the vehicle’s electronic systems. Reconnect the battery and check if the brake light indicator has turned off.
To reset the brake light in an Acura, first, ensure that the brake fluid level is adequate and the brake system is functioning properly. If the light persists, turn the ignition key to the "On" position without starting the engine. Press the gas pedal three times within five seconds, then turn off the ignition. This should reset the brake light; if it remains on, consider consulting a professional for further diagnosis.
by connecting an OBD II code reader