I changed the break light switch and now I can not get the truck out of park
I have no break lights, I checked the bulbs, fuse, relay and all checked out fine. I then changed the break light switch and still had no break lights. With the engine off I have a strong break pedal, when I start the truck the break pedal goes to the floor. at that I gave up for the night. the next morning when I started the truck I can not get it out of park. do not understand why pedal goes to floor when truck is started. believe that is why can not get out of park.
My car has an automatic transmission.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello, thank you for writing in. The vehicle may be having issues the with ABS system. Considering the timing with the brake light switch, you will want to verify that installation and make sure it is clean, dry, and tight. If the transmission does not detect that the brakes are being pressed, the transmission will not move out of park, pointing to an issue with the switch or its circuit. You may also want to check to verify that the brake lights are getting power when the pedal is pressed, both while on and off. If there is not an electrical issue, you will want to turn your attention to the vacuum and brake fluid. There may be a vacuum leak involving the booster. All of the vacuum lines should be inspected. The hydraulic brake fluid lines, fluid level, and fluid condition should all be inspected. For more help with these inspections, contact our service department to schedule an appointment.
How to Identify and Fix Common car Problems ?
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It sounds like you may have either a blown fuse or a broken wire. Check and replace the fuses/relays as necessary. It may be necessary to check for battery voltage with a digital volt/ohm meter at the brake switch and bulb sockets; be sure to follow the power source power flow chart in the electrical wiring diagram.
If power is not present at the brake switch and the fuse has power on both sides, then there may be a broken wire from the fuse to the switch. There could be a broken wire from the switch to the lights; use the digital volt/ohm meter to check continuity from the switch to the ground and repair as necessary.
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.
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.
Chances are, if your brake and turn signals have all gone down, your fuse is as good as gone. You can find your car`s fuses in the fuse box, often underneath the hook or on the kick panel inside the passenger compartment. Your car manual should tell you which fuse is for your brake circuit.
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.
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.
Switch is plumbed into the brake system and is activated by closing the electrical connection with rising brake pressure (60-120 PSI).
You can see your brake light switch by looking under the dash, near the top of the brake pedal. The brake light switch is usually attached to a small bracket that holds the switch, activated when the pedal is depressed, in position.
Any loose, frayed, damaged, or otherwise faulty wiring in your tail light system will usually not affect your brake lights because they are powered by different wiring systems.
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.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
I changed the break light switch and now I can not get the truck out of park
ANSWER : Hello, thank you for writing in. The vehicle may be having issues the with ABS system. Considering the timing with the brake light switch, you will want to verify that installation and make sure it is clean, dry, and tight. If the transmission does not detect that the brakes are being pressed, the transmission will not move out of park, pointing to an issue with the switch or its circuit. You may also want to check to verify that the brake lights are getting power when the pedal is pressed, both while on and off. If there is not an electrical issue, you will want to turn your attention to the vacuum and brake fluid. There may be a vacuum leak involving the booster. All of the vacuum lines should be inspected. The hydraulic brake fluid lines, fluid level, and fluid condition should all be inspected. For more help with these inspections, contact our service department to schedule an appointment.
While driving on freeway truck goes into a limp mode, and the check engine light, abs light, parking break light, service brake
ANSWER : It is possible that you could be having an issue with your powertrain control module. This is somewhat of a common problem on many GM vehicles. I would recommend having your vehicle inspected by the dealership to determine if the powertrain control module is functioning properly. If not, a reflash of the powertrain control module may resolve the issue but often times it must be replaced.
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.
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.
signals, daytime running lights are not working, park brake light on dash is on steady and chime is dinging steady 4×4 wont engage
ANSWER : This is likely a brake light switch problem. I would suggest testing the brake light switch which should be located down by the brake pedal. This may also be a computer problem as well as indicated by the other lights on in the dash. I would recommend having an expert from YourMechanic come to your home to possibly replace the brake light switch and diagnose with a scanning tool which will download useful data from the truck’s computer indicating what specifically the problem may be.
Check engine light and oil light comes on before oil change?
ANSWER : Hi There,
As you may know, these lights are designed to come on at specific mileage intervals that are preset by the factory. When your mileage exceeds a certain amount relative to the last oil change, this will trigger the lights to come on. Typically this will include the oil light and the check engine light as there are also other basic service items that are checked during oil changes. I would recommend obtaining an owner’s manual for your car if you do not already have one. This will usually indicate the specific service intervals and recommended maintenance items for your vehicle at the various mileage intervals.
As you may know, these lights are designed to come on at specific mileage intervals that are preset by the factory. When your mileage exceeds a certain amount relative to the last oil change, this will trigger the lights to come on. Typically this will include the oil light and the check engine light as there are also other basic service items that are checked during oil changes. I would recommend obtaining an owner’s manual for your car if you do not already have one. This will usually indicate the specific service intervals and recommended maintenance items for your vehicle at the various mileage intervals.
The tire pressure monitor will also come on when the air pressure in the tires has reached a specific threshold relative to the tire design specification. Tire pressure is also impacted by the outside air temperature. For every 10° drop in air temperature outside your tires will lose about 1% in PSI or inflation. As you may know, as the temperature of the air changes the density of the air changes as well causing the tire pressure to be impacted by this. When this happens, the sensors in the wheels will detect this change in tire pressure and cause the tire pressure light to come on. Aside from replacing faulty tire pressure sensors, another way to help prevent this type of fluctuation in tire pressure is by the use of Nitrogen in your tires rather than regular air. As you may know, air is approximately 78% Nitrogen, 21% Oxygen and the rest is water vapor and some other small concentrations of gases. Nitrogen is much less likely to migrate through tire rubber than oxygen. This will maintain your tire pressure much more consistently during large temperature fluctuations.
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.
Truck cranks but won’t start after switching led light bar switch.
ANSWER : Hi there. Although we do not provide specific advice on mechanical issues due to aftermarket part accessory add-on’s, it is quite possible that the addition of the amp switch, it’s impacted the ignition system. I would start by verifying that your ground connection to the amp switch is solid and that it is installed in conjunction with Ford’s wiring specifics. You can contact a local dealer or search online to get a wiring diagram.
