Usually the cause for this issue is that the brake light switch mounting is not properly adjusted.
Occasionally, the adjustment is correct, but the switch is defective in that the contact points inside are not opening up.
The first thing I check is the adjustment [most switches screw into or out of their mounting bracket to adjust]. On most vehicles, the switch is operated by a "plunger" which is pushed into and out of the switch body by the "arm" of the brake pedal.
When the brake pedal is in the fully retracted position, it allows the plunger to be pushed out of the switch by an internal spring, thus opening the switch contacts, and cutting off the flow of electricity, turning the light off.
I "test" the brake light switch by disconnecting the wiring harness plug and unscrewing the switch from its mounting bracket. I then reconnect the wiring harness and while having a helper watch the brake lights and while holding the switch in my hand, with my thumb I "push" the plunger into the switch body.
This should turn the lights ON. Removing my thumb, allowing the internal spring to push the plunger back out of the switch body, should cause the lights to turn OFF. If this test works, then the switch is OK and should be reinstalled and its position "tweaked" until the lights stay off when the brake pedal IS NOT depressed, but turn on when the pedal IS DEPRESSED.
Another possible cause is that the brake pedal and its arm are no longer returning to the full "up," [retracted/disengaged] position. IF this situation is not too extreme then readjustment of the switch will correct the problem.
However, IF the pedal "resting position" is too far down, then that suggests there is something seriously wrong with the brake system itself, and MUST be checked out and repaired for the sake of safety.-
Check the brake light switch down on the brake pedal.
Sounds like it sticking from under the brake pedal. Have the brake switch looked at. It may need to be adjusted of replaced.
Check the brake light switch.
Brake Lights do not turn offUsually this is caused by the physical position of the brake light switch not being adjusted properly.
Brake Light switch works without the ignition on. unplug the brake pedal switch and check to see if the brake lights are still on..switch could be defective
turn the inside lights off
The brake lights won't turn off because the brake light switch on the pedestal of the brake pedal needs to be replaced.
Change out the switch. Bad switch!!
The brake light switch might not be connected properly. Remove the brake light switch for 10 seconds and replace it to its original position.
I had this problem when I shut off the vehicle while the brake pedal was still depressed. I would recommend you start the vehicle up, turn on all lights, then shut back off and turn vehicle off without have foot on brake pedal. These vans havea feature which keeps the lights on for a short period after the vehicle has been shut down, but I think there is a fault in this feature when you turn off the vehicle with the brake pedal pressed, which causes the brake lights to stay on even though the vehicle is off
There could be a problem with the relay being grounded. There could also be a bad fuse or the fuse connection.
In this order only. Turn engine off. Depress parking brake. Turn engine on. Lights will turn off. To turn lights back on relase parking brake.