Brake lights will not turn off on my 94 Nissan Altima

This problem is caused by a defective brake light switch, the switch is either out of adjustment (it is a threaded adjustment) or is defective, it is located under the dash and at the top of the arm the brake pedal is attached to. There will most likely be a plastic panel under the dash you will need to remove to see the switch. Here is a picture of the brake light switch.

Your brake light switch is just above brake pedal, under dash. It's small plastic switch w/a couple of wires coming from it. Pretty easy fix.

you can replace your brake switch, which is located by the pedal, or you can remove a little plastic cover by your shifter, stick a screwdriver in that hole and it will release the lock for your shifter

Brake lights that won't turn off with a good switch need this.
[46512] STOPPER-RUBBER on the brake pedal bracket to contact the switch.
http://www.courtesyparts.com/frontier-parts-d22u-1998-2004/genuine-nissan-parts/brake/465-brake-clutch-pedal/-c-2129_2130_2232_2238.html

the plastic round stopper most probably broke that is were the stoplight switch sits when not depressed easy fix find a washer small enough to block the hole were the original plastic stopper was making sure the washer aligns to the brake light switch and secure washer w/ zipties hope this helps.

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.

This could be the problem http://z31.com/repairs/brakepedal/ different car same problem i just fixed my sentra based on that link.

Here is where to order the parts to fix it yourself.

http://www.courtesyparts.com/betasite/stopper-rubber-p-365646.html

randyref: The most common problem with the Nissan's when it came to brake lights staying on, was a little plastic stopper button
which is located up near the top of the brake pedal arm.
If you follow the brake pedal arm up, you will find the brake light switch. If you push the pedal down, feel where the brake light switch is suppose to contact the pedal frame.
You will probably discover that there is a hole there instead of something that the switch was to come in contact with so it could be compressed which in turn, opened the circuit causing the brake lights to go out.
The part is available from Nissan and usually is stocked because it is a common problem. I stock 3-4 in my shop and I'm not a dealer.
The part it self is a round semi soft clear plastic disc with a small button which you push through the hole in the pedal frame, where it snaps in place.
I'm willing to bet that this will solve your problem. Check it and get back to me.

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.

HI
IT WAS LOCATE IN UPPER OF THE BRAKE PEDAL
BEFORE YOU CHANGE IT CHECK FOR :-

STOP LAMP SWITCH AND ASCD CANCEL SWITCH CLEARANCE
1. Twist and pull to remove switch.
2. Pull up on brake pedal pad and hold.
3. Insert switch into retainer until switch plunger is completely depressed.
4. Turn the switch until it locks into place in the brake pedal bracket.
NOTE:
When turning the switch to lock into place, the switch backs off the stopper to the correct clearance automatically.
5. Release the brake pedal pad.

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