On a toyota tacoma 2003 SR5 when the tail lights are turned on the brake lights come on and when the tail lights are of the brake lights work just fine what could be the problem. If the truck has a trailer plug, inspect the plug and plug wiring for damage and corrosion.
If the headlights are on and brake lights work but not the tail lights, it is possible there is a short in the electrical wires. Another cause for this could be that the tail light bulbs are burned out. Most vehicles have more than one bulb inside the tail lights to control different lights at the same time.
check the fuse, brake lights have their own, & check the brake switch at the top of the brake pedal
My Brake tail Lights Stay on when my car is complete turned off and my lights are off to.
Are you saying your tail lights themselves do not work and only the brake lights work. If that is the case, check the fuse, and then check the tail light bulbs.
its on different bulbs
My rear window brake light works, but not my tail light brakes on my 1997 Monte Carlo. What is the problem?
Look for a fuse labeled TAIL LIGHTS. There are 2 separate circuits, one for brake turn and flasher and the other is for tail lights.
The bulb is burnt out. If the problem was a fuse, then all brake lights and probably the dashboard lights would be out as well.
The tail light/brake light bulb has two filaments. If one of the filaments is broken, you will get either only tail lights, or brake lights. If a new bulb doesn't work, then you have a broken wire or bad connection in your plug-in.
tail lights circuit