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.
i have the same problem i replaced the coolant temp sensor to get my check engine light to go off but it could be a number of things the brake light means you have a problem with the brake system but i have hared that the light sticks and is a common problem with blazers in the late eighties and early nineties models
This is operating as intended. Brake lights are only activated when the brake pedal is pressed, irrespective of the other lights in use. It is a safety feature so vehicles behind are aware the brakes have been applied. They are separate from the tail lights so they still give a visual indication of braking whether the other lights are on or off.
This is usually a grounding problem. Either an insufficient ground to the assy or a positive to ground problem. As you mention the brake lights work with the lights off, it will probably be related to a problem with the "running lights" system. As you mention only a problem with the passenger rear, I would check for a poor ground related to that light assy or possibly one of the bulbs' internal filaments in that assy touching each other. Or possibly a socket failure at that assy. Good Luck
Have you upgraded any lights to LEDs? This answer can apply to any car with this problem but only if LED lights are used. This can be caused by LED 1157 tail/brake combo lights. The problem is that the tail and brake lights are not always as isolated as they should be. When the brake lights are powered on the tail light terminal becomes live. This voltage will power up the park light circuit ie. tail lights, front park lights and instrument panel. The "short" comes after the LED resistors in the 1157 therefore the leaked current is low and will not usually cause any problems unless you have LED's throughout the park light circuit, there is insufficient current to turn on standard light bulbs. Solution is a diode fitted in line on the tail light wires to the 1157s allowing current into the 1157 but not out.
So you're saying that you have a 3rd brake light but nothing at the lower brake lights, and only one of the turn signals work. If that's the case, it's probably the brake light switch in the steering column. Don't touch it!!! The air bag is in the steering wheel, and if you make a mistake and it goes off, it could be very harmful or even fatal. Take it to someone who has experience and training.
AnswerTry checking your fuse for your tail lights in your fuse box if that doesnt work try check for a short in your wiringAnswerI noticed on my 1990 did the same. Also found out it only happens when the TILT wheel is completely down. Try lifting the tilt wheel up and down with someone watching your brake lights. Have not pinned down the source in the column yet, but will keep looking!!!The brake light switch is probably the problem. My '91 had the opposite - the brake lights worked but the 3rd light did not. The brake light switch has 2 terminals - one for brake lights and one for the 3rd brake light. Replace the switch.
I have a 98 Villager and I had the same problem. I found that the brake light switch at the brake pedal needed adjusting. Just loosen the lock nut and adjust the switch so that the brake lights do not stay on but only come on when the brakes are applied, then tighten the locknut. Worked for me. Hope this helps.
You may have disconnected the earth return or battery wire for the brake lights. This is only a possible solution if the brake lights do not use the frame as an earth return directly adjacent to the brake light housing. Normally the switch operated by the brake pedal or lever connects and earth to the brake circuit to light the brake lamp.
It seems you have two problems here. If you press the brake pedal and the brake light on the dash luminates, you have a brake problem or the fluid level is low. The other problem seems to be the blinker light on the left side is not working or the blinking tail light on the same side is out. It's more than likely the latter. Good luck!
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