What is wrong when your brakes work fine but when you turn your headlights on your brake lights stay on constantly?
IT'S PROBABLY JUST A PROBLEM WITH THE PRINTED CIRCUIT BEHIND THE DASH.
Why would the brake lights on a 1998 318ti work normally without the headlights but stay on constantly with the headlights?
The only way you can completely turn off the headlights is to push in the emergency brake slightly, then start the truck and leave the emergency brake on the slightest setting, and the running lights will stay off. Obviously the brakes will be slightly engaged, but you can adjust the emergency brake so the first click doesn't engage the brakes.
On a 91 Camry should the brake lights come on as tail lights when you turn on lights or remain out until brakes are applied even if lights are turned on?
What causes the brake lights to work when the headlights are off but when you turn the headlights and running lights on the brake lights go off on a 1992 Plymouth Sundance?
What could cause the brake-lights on a 1990 Volvo to work with the headlights off but not to work when the headlights are turned on?
Why would my 97 mercury villager brake lights not work but dash and tail light come on when braking?
I would check the rear bulbs. I just had this issue and it ended up my brother had used the wrong bulb, and odd enough it caused the brake lights to stay on with headlights. When headlights were not on and you applied the brakes the dash would light and brake lights worked. Strange, HUH? I must admit before this revelation, I replaced headlight switch and brake switch, with no avail.
Brake lights should NOT be effected by the headlights. Brake light function is completely independent of the headlights. Assuming you are not refering to the tail lights, or marker lights, which are supposed to come when the head lights are turned on. Not having brake lights when the head lights are on is a big safety problem and should be corrected.
How can i fix a 1999 Pontiac sunfire that the tail lights and brake lights are not working but daytime runners and back window brake light works what is wrong?
On my 98 sunfire, the tail lights and marker lights only work if you turn on the headlights. If only the daytime lights are on, the Pontiac on the trunk is illuminated but no other lights at the rear until brakes or turn signals are activated. This is common with a lot of vehicles out there. Daytime running lights are not necessarily the same candle power as the headlights. I can tell a big difference…
you have bad contact in ground cable of the brake lights You might also like to check that there has not been a bulb replacement lately that uses a single contact in a double contact socket. This would have the effect of shorting the brake and tail light inputs and thus turn on ALL lights when brakes are applied or the parking lights turned on.
You can only turn off the headlights by applying the emergency brake. When the emergency brake is on, the headlights will not light. Otherwise the best of my expererience is that they are on all the time. If you have remote start, put the emergency brake on before you leave the vehicle and when you remote start it, the headlights will not be on, but the driving lights (if switch is on) will be on…
First you need to understand that most, if not all, vehicle [autos, trucks, and trailers] rear lighting systems have both tail light bulbs and brake light bulbs, OR a single bulb on each side [right and left] that each have two filaments [what glows when electricity is applied]. The tail lights are supposed to be on when the headlights, or parking lights, in the towing vehicle are turned on. The separate brake light bulb, or…