Left brake light not coming on
My left brake light will not come on. It is not a problem with the bulb. I have had a few people say it could be an issue with the internal computer.
Experienced mechanics share their insights in answering this question :
The most common reason is usually the bulb. Other causes of the brake light not lighting is the wiring or possibly a fuse on that side of the vehicle. A qualified technician, such as one of our YourMechanic experts, can diagnose this issue by checking for power at the bulb and working back from there.
How to Identify and Fix Common car Problems ?
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If one or more of your brake lights aren`t working properly, it could mean one of three things: The brake light system fuse is blown, the brake light bulbs are burned out or the brake light wiring switch is broken. All these issues are easy to troubleshoot.
If you have a single brake light out and the bulb is good, then the next step is to check the light socket itself. Brake light problems can include a socket whose connections are dirty or corroded or one whose wiring has become worn to the point where it`s only making an intermittent connection.
Blown Fuse or Broken Fuse Box
If your brake light switch works perfectly fine and yet the brake light doesn`t illuminate, you should check for a blown fuse or a broken fuse box. This is important because both these components affect the brake light circuit.
When the lower lights do not come on and only the third-brake light works, the brake-light switch may be ruled out. Again try the emergency-flashers to check for wiring, socket and lamp problems. If the flashers work, check for blown fuses as a few vehicles use separate circuits for the lower and third brake lights.
Switch check
If the light only illuminates on one terminal, the switch is faulty and should be adjusted or replaced. To check this, disconnect the wires to the switch and join them together. The brake lights should now come on.
It is a 15amp fuse that powers the stop light switch on the brake pedal. The brake light switch sends power to rear brake lights.
Electrical Issues
If you have a malfunctioning tail light, it could be a matter of a blown fuse. The fuses work with your car`s electrical panel and if they`re blown, it can cause several lights to stop working. Replace the fuse and see if this helps. Another issue may be related to your wiring.
If your brake service warning light is always on, it could be due to a need for parking brake adjustment, worn brake pads, or hydraulic issues. If your brake service warning light turns on when you hit the pedal, it could be due to hydraulic loss on one side of your vehicle or low brake fluid in the master cylinder.
All vehicles require three working stop lamps (brake lights). The required brake lights consist of the two standard brake lights on each side of the rear of the vehicle.
The most common reasons your brake light is on: The Parking Brake is engaged. Brake Fluid is low or leaking. Worn brake pads.
It`s super inexpensive to get a brake light bulb replacement done because a replacement bulb usually costs around $5-$10. Add to that the labor charge may be between $10-$20, depending on your locality. However, do remember the light bulb prices for some can be higher depending on their designs.
Most likely, the reason for dim brake lights is a bad earthing point. The interesting aspect of automotive electrics is that the negative terminal is connected directly to the chassis and engine. Hence, for any component that is powered, the negative can be fed directly from any metal panel near the device.
A replacement brake light switch generally costs around $30 to $75, depending on the make and model of the vehicle. Getting a brake light switch fixed at a shop will add typically $80 to the repair. Yes, you can change your own brake fluid.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
When I put my foot on the brake my back left brake light goes off, when I take it off the brake the brake light comes on
ANSWER : I would suggest trying to disconnect and reconnect the wiring to the rear lights. I have seen these older Toyota vehicles rear lighting short out on the lights themselves due to the way the light circuit was made on the lamp housing. Look at the housing circuit on the light to see if one is touching another, and that could tell you why it is malfunctioning. There could also be a problem with the brake light switch. If you are not comfortable dealing with wires, I recommend getting in touch with a certified mechanic who can look at your brake light issue for you to see what’s going on.
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EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.
Read Full Q/A … : Left brake light not coming on
Brake lights are not working. replaced brake light swtch still no brake lights. the third brake light the connection was melted at
ANSWER : The first thing to do is to repair third brake light and replace the brake light fuse and then see if the third brake lights work and the lower lights start working? If only the 3rd brake light starts working then you may need a further checks on the turn signal flasher or switch could be bad.
Read Full Q/A … : Left brake light not coming on
No dash lights, back right tail light is out, no parking lights. Brake lights work though as does head lights.
ANSWER : Hi there. In many cases, when you have electrical problems like you’re describing, it’s caused by multiple electrical component failure. It’s likely that a few electrical relays are not working; especially if you have systems that utilize the same components (such as your brake light and tail lights). I would recommend having a professional mobile mechanic come to your location to complete an electrical problems inspection first, so they can pinpoint what is damaged and recommend the right repairs.
Read Full Q/A … : Left brake light not coming on
My ABS light and occasionally my emergency brake light is coming on and my brakes occasionally make a grinding noise when coming to a stop.
ANSWER : Hello there, many faults will cause your ABS light and emergency brake light to be seen on your 2009 Chevy Aveo5. When the ABS light is on it indicates there is a fault in the ABS system. This fault will leave a code stored in the ABS computer which when read will narrow down what is going on. Common faults are a wheel speed sensor, ABS module, or a wiring harness fault. To avoid any unnecessary repairs, a qualified technician such as one from YourMechanic will be able to diagnose your ABS light and make any repairs required to resolve the issue.
Read Full Q/A … : Left brake light not coming on
My brake lights and dash brake light come on while driving.
ANSWER : These types of warning lights will generally store a fault code in one or more of the vehicles control modules. The warning lights you are getting may be the result of a faulted brake pedal position sensor or wheel speed sensors. Further diagnosis will be necessary to determine the exact cause. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer look and offer a more personal diagnosis of your warning lights.
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Rear brake light, and some interior lights don’t come on unless I’m braking
ANSWER : Hello. Replacing the stop light socket with a new one should have solved the intermittent problem of the stop light not working all of the time. It is possible that when you tweaked the socket, it caused a short to ground. This could explain why the dash lights only come on when you press the brakes.
The first thing that I would suggest is that the stop light socket be replaced. After replacing the stop light socket, if the dash lights still only come on when you press the brake pedal, the wiring for the dashboard will need to be inspected for any shorts to ground or bare wires touching metal that it shouldn’t touch. Since this issue started as a rear light problem, I would start with having your rear lights inspected by a certified technician, such as one from YourMechanic.
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Brake sensor is to sensitive causing brakes to flicker while driving. 2005 Mercury Montego
ANSWER : Hi there – your brake light switch needs a minor adjustment. It is adjusted too "tight" or close to the brake pedal lever, or possibly has failed. Adjusting/replacing it will eliminate this flickering problem. I recommend a brake light isn’t working inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : Left brake light not coming on
