Brake lights not working fuse OK bulbs OK new Switch still not working

checked fuse OK & bulbs OK new Switch still not working
My car has a manual transmission.
Experienced mechanics share their insights in answering this question :
Hello, thank you for writing in. If you know that the brake bulbs, relay, and switch are good then you have an issue with the wiring or the ground connection. The body control module also plays a role in how the brake lights function. While it is a long shot that the BCM is the cause, keep it in mind. Also consider that the brake light switch you purchased may be faulty. It is rare that this happens, but it does happen. You should double check that everything else with the brake pedal linkage and sensor is working correctly. Make sure your electrical connections are clean, dry, and tight. For more help resolving the issue, contact our service department to schedule an appointment.

How to Identify and Fix Common car Problems ?

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Reasons Why Tail Lights not Working When Brake Lights are:

Faulty fuse—when troubleshooting this issue, the first piece of professional advice you`ll usually receive is to check the tail light fuse. Often, a bad fuse is to blame. Wiring—once again, wiring issues are key to pinpointing this problem.

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.

Check Your Fuses

The first thing to check is whether or not the brake light fuse has blown. This fuse is usually located in the fuse box under the hood, and it`s relatively easy to check. Just remove the fuse and hold it up to a light – if the wire inside is broken, then you`ll need to replace the fuse.

Brake light problems can be caused by a blown fuse. If it`s blown, replace it with a new one. Check the amperage of the new unit and be sure it is the same as the old one. Otherwise, the problem might keep recurring.
And because the taillights and brake lights do not share the same circuit, confirming the ground as a potential cause is not a task that needs much analysis.
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 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.
Your brake warning lights may start to flash, or display in amber or red, in the following situations: Your brake fluid has started to leak. The car is experiencing a sensor failure, which erroneously triggers the brake warning light. The brake pads have become overly worn and need replacing.
The most common reasons your brake light is on: The Parking Brake is engaged. Brake Fluid is low or leaking. Worn brake pads.
Like all fuses, the brake light system fuse can be found in the power distribution center, which is under the dashboard or tucked away underneath the hood. Never heard of the power distribution center? It`s just the technical name for a fuse box.
You only need a Brake-Lite Relay if you`re installing a supplemental towed vehicle braking system that pushes or pulls the brake pedal. With the engine off, step on your brakes. If the brake lights do not illuminate, you do not need a Brake-lite Relay.
Check the fuse.

A blown fuse usually causes both lights to go out. On newer cars, the tail lamps can be fused separately and/or each bulb or shared circuit can be fused. A fuse can be blown due to other problems, so you`ll need to check more than just the fuse, but it`s the right place to start.

At night, or when the headlights are turned on, the rear lights illuminate constantly to let other drivers know where you are, and illuminate brighter when braking. Your rear lights are controlled through the same switch that controls the headlights.
The Difference Between Brake Lights and Tail Lights

Tail lights are engaged when the you turn on your headlights or when your parking brake is on, whereas the brake lights will light up immediately when you apply pressure to the brakes.

All the electrical systems in your car, including the headlights, are protected with fuses. These are designed to `blow` and break the circuit if too much power comes through them. This protects all the components on the circuit. If a headlight fuse blows, it could cause the headlights to stop working.
Touch the probe of the test light to each of the switch terminals in turn. 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.
On many vehicles, the tail lights and brake lights share the same bulb. One filament inside the bulb is for the tail light and the other filament is for the brake light. There are also some vehicles that have a separate bulb for each circuit.
Check the fuse.

A blown fuse usually causes both lights to go out. On newer cars, the tail lamps can be fused separately and/or each bulb or shared circuit can be fused. A fuse can be blown due to other problems, so you`ll need to check more than just the fuse, but it`s the right place to start.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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.

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.

Brake lights not working fuse OK bulbs OK new Switch still not working
ANSWER : Hello, thank you for writing in. If you know that the brake bulbs, relay, and switch are good then you have an issue with the wiring or the ground connection. The body control module also plays a role in how the brake lights function. While it is a long shot that the BCM is the cause, keep it in mind. Also consider that the brake light switch you purchased may be faulty. It is rare that this happens, but it does happen. You should double check that everything else with the brake pedal linkage and sensor is working correctly. Make sure your electrical connections are clean, dry, and tight. For more help resolving the issue, contact our service department to schedule an appointment.

I have no brake lights and third brake light I have checked all fuses and brake pedal switch and the switch is fine and I’m still
ANSWER : Hi there. Well, you’ve listed most of the usual suspects including the brake switch, fuses and tail light assembly. However, one item you might want to also check is the accessory electrical relay. In some cases, the relay that supplies power from the brake switch to the tail light assembly will cause the issues you are describing. I always recommend that home mechanics purchase a service and repair manual for their vehicle to have a schematic accessibly, so it might benefit you to purchase one online to locate this relay or feel free to have one of our mobile mechanic some to your location and complete a brake light inspection, so they can help trace this issue for you.

Okay so when I turn my lights on at night my brake lights do not work, when I don’t have my lights on they work fine.
ANSWER : Hi there. Based on your inquiry, it’s highly probable that you have a damaged light switch or some electrical fault inside the turn signal relay. However, it’s also possible that the brake switch above the brake pedal could also be the source of your problem. Due to the fact that multiple electrical components might be causing this issue, it’s a smart idea to first have a professional mobile mechanic complete a brake lights are not working inspection, so they can determine what’s causing all of these issues and recommend the right repairs.

Gear stuck on park. Brake lights dont turn on. Brake light switch has been changed the problem still remains.
ANSWER : Hello, thank you for writing in. The vehicle is likely having a connection issue somewhere around the switch. Since you have a voltmeter or test light, you will want to test for power leading up to the fuses, and then after the fuses. If you have power when pressing the light after the fuse (this means the power is making it through the fuse), continue to trace that voltage until you find where it stops. This voltage drop is most likely going to be at an electrical connection or terminal, a broken or frayed wire, a faulty switch, or a bad ground connection. Currently the vehicle is in a safety mode, and tracking down the cause of the brake light switch issue needs to be the main focus. For more help resolving the issue, contact our service department to schedule an appointment.

All dashboard lights and tail lights do not work after driving through a lot of snow. Headlights work. And brake lights work.
ANSWER : Hello. We’ll be happy to help you. There are a few things that I recommend checking to discover why your lighting system is malfunctioning. The headlight dimmer switch should be checked. Along with the wiring harness above the right front tire behind the fender well cover. Also
the main fuse under the hood should be inspected because other people with your particular vehicle have had similar lighting issues if that fuse goes bad. It will be a great idea to check the rest of the fuses in that area too while checking the main fuse. Once the fuses are checked inside of the main fuse box then I would check the fuses inside of their interior fuse box. The interior fuse box should be located on the driver side of the dashboard near where your legs would be. If you need more assistance with repairing your vehicle please keep in mind that our organization provides Mobile Mechanics who can help you diagnose and repair your vehicle, all at competitive rates.

Brake lights on constantly
ANSWER : It sounds like you have a short in your brake light circuit. Since you have replaced the brake switch yourself, I would recommend searching around in that general area for any damaged wiring that may exist near the switch. Wires may be frayed or completely ripped in half. Depending on the extent of the damage, this issue may be resolved by applying electrical tape or replacing an entire harness. If the short is not found in this area, I would then check near the fuse box to see if the cavity for the brake light fuse is damaged or burned. If so, the entire fusebox will likely require replacement.