Brake lights stay on cruse control don’t work , traction control is off ,light on the dash is on. Replaced the brake switch. 2008 Pontiac G6

Brake lights stay on, cruse don't work, traction light is on. Replaced brack switch didn't fix it. Lights go off when car is off.

My car has 107000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hello – your brake light switch needs to be adjusted, even though it was replaced. With the switch "On" all the time, the cruise control won’t work, now will the traction control system either. For assistance with this step, I recommend a brake light switch service performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, adjust the switch, and verify that this corrects the cruise/control and traction control systems malfunction.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Bad Cruise Control

If your vehicle comes with cruise control, a misaligned or bad brake light switch can deactivate it. Why does that happen? In many vehicles, the cruise control system and rear brake lights share the same switch. So if the brake lamp switch stops working, your cruise control would likely follow suit.

The most common cause your brake lights stay on is because of a faulty brake light switch or sensor. It can also be caused by a faulty brake pedal or a malfunction in the electrical system. If you recently replaced the rear light bulbs when it occurred, you may have installed the wrong light bulbs.
A: Yes, they do. Any time the brakes are applied, either by you or the computer, the brake lamps will illuminate. Adaptive cruise control (ACC) will apply the brakes when exceeding the cruise setting when going downhill and the brake lights will illuminate.
A blown fuse is the simplest to explain. If the fuse of your cruise control is bad, the cruise control won`t work. If the speed sensor or speedometer isn`t working, the cruise control won`t work either, since this feature is partially responsible for making the cruise control function properly.
ABS sensor faults

If any of the ABS sensors are faulty (there is normally one on each wheel), the cruise control system will not activate.

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.
What does it mean if your brake warning light is on? Typically, your brake system warning light being on means your parking brake is engaged, but if you`re still seeing the red (or orange) warning on your dash while the parking brake is disengaged, you will need to get your brakes inspected as soon as possible.
Once activated, the cruise control system will keep the vehicle at a constant speed or rate of acceleration until it is switched off manually or the brake pedal is stepped on. When the brake pedal is stepped on, the cruise control brake release switch is tripped and the cruise control system is then cut off.
P0571 is a generic OBD-II diagnostic trouble code (DTC) that the engine control module (ECM) generates. The P0571 code is defined as a “cruise control / brake switch ` A` circuit malfunction.” The letter `A` can refer to a specific wiring, harness, connector, and so on.
Damaged Speed Sensor

That`s right, it senses speed (specifically, how fast your vehicle is traveling). A damaged speed sensor may cause the cruise control not to work properly due to inaccurate readings. Since a damaged speed sensor can also cause problems with the speedometer, it should be fixed right away.

Since your car`s cruise control is part of an electrical system, it needs a fuse to function properly. A short circuit in this system can cause a fuse to blow, which means that the cruise control will suddenly stop working. Fortunately, replacing a blown fuse is a cheap and easy repair for any auto mechanic.
A radar sensor is installed on the car`s front grille, which can sense how close or far away the vehicle in front is. By sensing this distance, the car will “adapt” its cruise control speed to maintain a safe distance from the vehicle ahead.
A radar sensor is installed on the car`s front grille, which can sense how close or far away the vehicle in front is. By sensing this distance, the car will “adapt” its cruise control speed to maintain a safe distance from the vehicle ahead.
A cruise control deactivation switch is designed to turn off the cruise control in response to the driver applying pressure to the brakes. The switch, which is designed to remain powered regardless of whether the vehicle ignition is on or off, is located in close proximity to the brake fluid reservoir.
A cruise control deactivation switch is designed to turn off the cruise control in response to the driver applying pressure to the brakes. The switch, which is designed to remain powered regardless of whether the vehicle ignition is on or off, is located in close proximity to the brake fluid reservoir.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Brake lights stay on cruse control don’t work , traction control is off ,light on the dash is on. Replaced the brake switch. 2008 Pontiac G6
ANSWER : Hello – your brake light switch needs to be adjusted, even though it was replaced. With the switch "On" all the time, the cruise control won’t work, now will the traction control system either. For assistance with this step, I recommend a brake light switch service performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, adjust the switch, and verify that this corrects the cruise/control and traction control systems malfunction.

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.

I replaced the brake light switch. Gear lever unlocked because it had locked. Now the brakes feel hard.
ANSWER : Hi, thanks for writing in. You need to check the brake switch install adjustment. You may have the switch adjusted too tight and it is holding the the brake pedal partly down. This will cause the brake master cylinder to not release the brakes when you let off the pedal. Readjust the switch away from the pedal until you feel some free play again in the pedal. This should fix the problem. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Just replaced head gasket, changed crack sensor new plugs. The check engine light is on, but dim, the only other light that the dash is a normal battery indicator. The fuel pump is not running when switch is turned on, the power windows don’t work, it turns over but not firing. It’s like only one part of the system is working. Also the heater fans work even if the switch is off.
ANSWER : I would first look at the diagnostic trouble codes. Those codes are available because the check engine light is on. If the fuel pump is not running (momentarily) at key on, that fault alone will prevent the car from starting as there will be no fuel pressure. Pump output and pressure can be directly tested and you can also check for electrical power to the pump. To find out why the engine will not run, the recommended diagnostic is a no start diagnostic. If you request that service, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Abs light, emergency brake light, steering wheel assist light, engine light, EPC light, traction control light
ANSWER : Hello, thank you for writing in. The vehicle does utilize a lot of the same sensors for these systems. Are there any other codes that are coming up when this code appears? If so you will want to take these into consideration when processing the repair and making a diagnosis. The module may be bad, and replacing it should fix the problem. The lights should turn off once the main computer recognizes the new module and the sensors sync up. If you believe the sensors need to be cleaned you may do so. Do as minimal as possible to make sure you are not damaging the sensor or disrupting the wiring inside. A bad connection would make the lights stay on. With so many lights that are effected by the module being illuminated, the module is likely bad or does not have a connection. Check the connection first and then resort to replacing the unit. For more help with these electrical tests, contact our service department.

Dash, Tail/brake, dome, trunk, glovebox, and door lights won’t work, dash doing weird things.
ANSWER : Hi there. Sure would appear a lot is going on electrically all at once. This could be, a problem in the PDC (power distribution center). The PDC is typically located under the hood and contains numerous fuses and relays. I don’t believe any one fuse will resolve all of the electrical issues. There is a possibility, it is not a power supply issue. It may be, the result of a poor electrical ground common to the inoperative components. Proper circuit testing should be performed. This would confirm the cause of multiple electrical failures. I recommend having your vehicle’s electrical problems be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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.