Brake Lights Don’t Work When Headlights Are On

One of the most common faults associated with advanced vehicles is the lighting system, Or Brake Lights Don’t Work When Headlights Are On. This fault happens in old and more current vehicles and can be quite frustrating to track down on the off chance that you don’t know how to analyze it correctly, particularly if you don’t have any experience working on vehicles or trucks previously.

Fortunately, we’ve put together an aide on the best way to track down this common issue so you can get your brakes and headlight or headlights combinations working again as fast as expected.

On the off chance that you observe that your brake lights aren’t working when your headlights are on, it’s memorable important that this issue is genuinely simple to fix it just requires some essential information on how your vehicle’s electrical system works and how these parts work together.

With the right tools and skills, you can typically get everything back to the ordinary in just a couple of moments with the least effort. Just follow the steps beneath to more deeply study fixing your brake lights.

Lights Don't Work When Headlights Are On

Importance Of Headlight And Brake Light

The headlights and brake lights on a vehicle are essential for safe driving and by and large, it is illicit to drive if they are not functioning correctly. There are various types of headlight systems, but they all do the same thing; light up the street in front of the vehicle. In a common halogen system, the headlight lodging is the place where the headlight bulb sits.

The lodging is covered with chrome paint that reflects the light in the distance. The chrome piece that bays the actual bulb is there to prevent the bulb from blinding oncoming drivers. They are controlled by the vehicle’s electrical system. They can be toggled between a high and low bar. These systems utilize a halogen bulb.

Brake lights serve a basic but important function they caution drivers behind you when you’re dialling back. Without functioning brake lights, the occurrence of backside collisions would certainly be a lot higher.

Brake lights illuminate when the contacts in the stoplight switch are shut. When a driver steps on the brake pedal, this shuts the switch, which sends capacity to the bulbs, which lights up the bulbs.

Issues with the light system can go from a basic blown bulb to something more complicated like a faulty socket. No matter what the reason, lights that are not functioning can prompt hazardous driving conditions, so the lighting system ought to be inspected and fixed at the earliest opportunity.

Identify A Brake Light Problem(s)

Pull up on the brake pedal and on the off chance that the lights go out, switch misalignment, or pedal position blunder is the reasonable reason. The last possibility is a wire shorted to control. Turn off the brake light switch and assuming the lights stay on, a short circuit is a case. Observing such a shorted-circuit is best left to a professional.

5 Reasons Why Brake Lights Not Working

Driving at night with either brake lights or headlights not working is risky for yourself and other drivers out and about. It takes a long time to notice when the brake lights not working, but the headlights are or the other way around.

Both brakes and headlights are pivotal for street safety. On the off chance that any of them don’t work, other drivers behind or front you won’t check whether you are moving or not. It can cause extreme accidents, particularly on dull streets or during weighty downpours and snow. The police will likewise signal you if they see you are without functioning lights.

It’s an unconventional issue since the headlights work fine when you drive, but hitting the brake creates no response from the backlights. Sometimes, squeezing the brakes turns off the headlights too, and they don’t start working again until you let the brakes off. The potential reasons for Brake lights don’t work when the headlights are being:

The Light Bulbs Are Shattered

The light bulbs are mostly smothered and responsible for the brake light disappointment. One of the most common reasons behind brake lights not working is smothered light bulbs. This is particularly true for those with more seasoned vehicles.

When you push down the brakes and the brake lights are not lighting up, immediately check for faulty light bulbs. This inspection and additional fix don’t need professional support. Remove the screws from the bulb’s conglomeration. You can go through the trunk and track down the exact location.

Push the bulb’s switch and turn them out from the socket counterclockwise. Mostly, you want to replace the bulbs if the bulbs are turned obscured, or you’ll see the filaments are blown. You will track down similar bulbs from the market with similar features and wattage.

Look At The Fuse Box And Light Switch

Second, the fuse box and light switch ought to be maintained. To get the options, get the PDC (Power Distribution Center). The PDC is mostly in the engine. If the brake pedal arm touches the brake light switch and confuses the fuse box and light switch, including the brake lights, then the switch must be removed.

Recall that assuming the fuse box and the light switches are in trouble, it will thoroughly affect the brake lights. We get a couple of enthusiasts, and they are confronting their concerns with a blown fuse. You want to transform them into another one. The new lights ought to be furnished with a similar amperage as the old unit. Try not to let the fuse box be a repetitive issue.

Look At The Electrical Ground

Here it accompanies the Electrical Ground. This brake light switch can also be fully functional. Then, you want to check for the electrical ground, assuming that they are positive or negative. It is wrong, it might have happened on account of a free connection. Sometimes, the wires get departed, sometimes the wires have corrosion around them, and sometimes the wires are entirely harmed.

You can try it. Connect the light switch to a decent (new) ground. Be aware of testing it with a jumper wire. Then, press the brake pedal to guarantee the brake lights are on. Is it ON? Then, you’ve to supplant or fix the ground connection.

Check The Wiring

Other than checking the Electrical Ground, be careful of studying the wiring. You should check every one component we are talking about! It is important to guarantee to assume they are working just fine. OK, we esteem looking at the wiring system. You might track down the wellspring of the issue here.

The fuse board that has gone through the brake light switch might be free. Assuming the regulator of the bulb sockets and lights are frayed, the bulb lodging connection gets consumed. You are prescribed to change these parts quickly.

Examine The Turn Signal Switch

Our last talk is about inspecting the ‘Turn Signal Switch.’ We have experienced many vehicle models, and our experience says that a few vehicles are designed between the brake light circuit and turn signal switch. For being that case, you get no response from the brake lights assuming they are harmed or awful.

You can check the switch’s wiring outline and observe the connection between the brake light and turn signal. Access the turn light switches and observe the brake light’s activation source to activate the light switch. Press the brake pedal and test the lights assuming that they are on.


Headlights can turn off for a long time and could likewise be similar reasons your brake lights stop working, too. Notwithstanding, there are likewise certain instances where Brake Lights Don’t Work When Headlights Are On. When this occurs, you might use this manual to assist you with identifying the wellspring of the issue. Continuously allude to your owner’s manual or have your vehicle checked by your trusted repairman.

It is your responsibility as a driver and vehicle owner to ensure that your brake lights and headlights are constantly working. This will assist with diminishing the probability of street accidents and guarantee your safety while driving.

Frequently Asked Questions

Can I drive my vehicle with no brake lights?

Indeed, the brake lights are not used for drivers’ safety but to show the travellers or ongoing vehicles about the protected run. You can drive your vehicle without brake lights, although it is illicit.

How would you test a brake pedal switch?

Put the sensor on just one of the two wires and hold the brake pedal down as you do. Then test the other wire. On the off chance that power is connected, and the switch works appropriately, the test bulbs will illuminate. On the off chance that it doesn’t light up, the brake light switch is faulty and should be supplanted.

Which fuse is for the brake light?

The tail light fuse might be in either the fuse board in the front traveller’s side of your vehicle or the principal fuse box in the engine. Once you’ve opened either the board or the fundamental fuse box, locate the tail light fuse. If you’re uncertain which one it is, use the owner’s manual for direction.

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