Nissan Altima brake light

disconnect your brake light switch ,its in brake pedal once you disconnect ,brake light off,either swicht or grounded to other wire

there is a pressure switch under ur break pedal.it might come off happend on my altima i snapped in a penny and it solved it.switch needs to be pressed in inorder to turn the brake light off.good luck..

Your problem should be that the rubber stops that are mounted at the top of your break pedal came out or are worn down too much to press the buttons all the way in.
What they do is push the button that switches off your break lights when the break pedal is released (yes, kind of backwards way to design it, i know). That's why your lights stay on even when your car is off. I had to go to the junkyard to find replacements for mine and they are a ***** to replace.
They are chipped away easily by the break switches when your car shakes badly over a prolonged period of time. Like driving a couple of weeks on a bad front tire.

check your break pedal.. I had the same problem. It wasn't the switch, it was the part of the pedal itself that presses the switch.

Try checking your bulbs its rare but seen them go out at the same time before sometimes from a electrical spike.keep me posted good luck

When you depress the brake pedal, the brake pedal will move away from the brake light switch and cause a close circuit and the brake lamps light up. There is a rubber bunk on the pedal which pushes against the brake light switch to shut it off when you release the brake pedal. Most likely this rubber bunk has either fallen off or disintegrated leaving a hole in the brake pedal so there is nothing to push against the switch to shut it off. Look up the brake pedal until you see the brake light switch, then depress the brake pedal to see if the rubber bunk is still there. It is easy to replace. Or you can use some double sided adhesive tape and a coin and stick the coin over the hole in the brake pedal.

theres a rubber stop on the break pedal
once they get old the crack & break
you can use a nut & blot to replace the rubber stop

I know this is outdated but for those with this problem which i had too, it is a rubber stopper that attaches to the brake pedel itself to keep the switch depressed on my car for there is 2 switches and there is 2 rubber stops attached to the brake pedal. this being gone will cause the brake lights to stay on all the time.

is there power TO the brake light switch? adn is there power OUT OF THE BRAKE LIGHT SWITCH?

sounds like you got a faulty switch... even though it's new, take it back and try again. Sounds like the switch is stuck in the closed position. Disconnect the switch and make sure that makes the lights go out.