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Headlights Tail and Brake Lights
VW Jetta
Ford Ranger XLT

Both the brake as well as headlights turn on when you turn on the lights on your 1997 Jetta GLS Brake lights stay on while driving What should you be doing?

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2005-09-02 02:28:39
2005-09-02 02:28:39

are you sure it is the brake lights and not the tail lights. if it is the brake lights you most likely have a short some where. go to a auto eletrican It is the brake lights which turn on. Short in the switch or the wiring?

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ummm... your brake lights should ALWAYS work whether your headlights are on or not, that's how people behind you know you are stopping.


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.



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 as well as the parking lights.


they are not brake lights they are fog lights and they turn on because it is for the car behind to see you



if you recenly replaced bulbs u may have installed them backwards they should be running lights and brake lights if this is the case they maybe installed incorrectly


You should consult the owner's manual, as this appears to be a fuse/electrical issue. You might also consider removing your foot from the brake pedal when driving at night. Happy braking!



Slow down and turn your low beam headlights on. Turn on signal lights in advance and brake early as you approach a stop.


Often this type of behavior is caused by a bad ground for the lighting circuit. Check the ground circuit for the brake lights.


The brake lights should not come one until you step on the brakes. The tail lights should come on when the headlights are on. If they're weak, maybe there's dirt in/on the lenses or maybe the bulb is old and clouded. Change the bulbs and see if that improves things.


one click of the parking brake should turn off the lights, don't recomend driving though


the brake lights are on a separate cuircut,if your brake lights are staying then it will be a fault with the brake light switch. the switch is located under dash,and will be on or very close to brake pedal.


The brake lights and the tail lights are separate circuits. Check the brake light fuse, then check the brake light bulbs, then check the brake light switch.


Is it the taillights or the brake lights? If taillights it may be a wiring problem, If brake lights check the switch on the brake pedal


Driving with no brake lights can be very dangerous. If it is dark outside, a car behind you, may not see you. Having no brake lights will not alert any cars that you are slowing down or stopping.


Well when you are driving the alternator is at a constant speed then when you slow down the alternator sort of skips a beat causing the lights to dim!


Brake lights are on continuously while you are driving. Every time the brake pedal is depressed.



Unless your car has been modified, or is faulty, the brake lights will go on when you touch the brake, wherever you're driving at that moment. Or are you perhaps thinking about the fog lights? These should be put on when visibility is reduced.


Nonfunctional Brake LightsOne possible cause of this issue is that the brake light switch is not adjusted properly, or the switch could be defective.


Check the bulbs they are double filamented with smaller being for brake lights


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 brake light filament in the dual filament bulbs is only supposed to turn on when the brake pedal is depressed, and the towing vehicle brake lights are on. I suspect that what you are calling brake lights are actually the tail lights. To check this out, run some tests. Have an assistant sit in the vehicle and do the following on your command: 1. Apply brakes by pressing on the brake pedal. The brake lights should turn on. 2. With foot OFF of the brake, turn on the headlights. The trailer tail lights should turn on. 3. With the headlights on, have the assistant depress the break pedal. Even though the tail lights are already on, the brake lights should come on also, causing the trailer lights to brighten noticeably 4. While you're checking, have the assistant turn the ignition key to on, and one at a time test the left and right turn signals. Again, I think what you think are brake lights, are actually the tail ligts.




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