The most common cause for brake lights to remain ON when the pedal is not depressed as that the brake light switch is not properly adjusted.
IF the brake light switch is definitely good [working properly] then the most likely cause for the brake lights to remain turned on is that the position of the switch [the distance of the plunger tip from the brake pedal arm] is not adjusted properly.
Most mechanical type switches are adjusted by screwing the switch [which has a threaded mounting to a hole in the mounting bracket] either toward or away from the brake pedal arm [which depresses the switch plunger to turn off the brake lights].
It is immeasurably helpful to have an assistant stand behind the vehicle to observe and report the changes [on-off, etc.] as you make adjustments of the switch position. You should continue to make changes in the adjustment until the brake lights stay OFF when the brake pedal is not depressed, and the brake lights come on when the pedal is depressed.
there is a switch up under the brake pedal
Might be a stuck brake light switch its located at the top of the brake pedal
It's probably an adjustment. I believe the brake light switch is under the dash, connected to the brake pedal. Adjust it so that the light goes off when the pedal is all the way up and the light comes on as soon as you touch the pedal.
open the drivers door neal down,look at the brake pedal and follow it up. There will be a switch that pushes in and out as the brake pedal is depressed and let go.
The most likely cause is a defective brake light switch; It is located towards the top of the brake pedal.
Should be at the upper end of the brake pedal under dash area
Sounds like the brake light switch is defective or out of adjustment. You can find it on top of the brake pedal, usually with 2 wires running to it.
Brake light switches are above the brake pedal
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.
check brake light fuse and brake light switch on pedal
The brake light switch is located on the brake pedal bracket. You'll need to remove the trim panel beneath the steering column to get to the switch and the connector. FriPilot
The brake light switch is located on the brake pedal bracket. You'll need to remove the trim panel beneath the steering column to get to the switch and the connector.