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How to Replace an Anti-Lock Brake Pressure Switch on Most Modern Cars
Anti-lock brake systems (ABS) have a pressure switch that fails if the the light appears on your dashboard or there is wheel locking during braking.
How to Replace a Door Lock Switch
The door lock switch goes bad if pressing the button does not lock or unlock the door or the usual functionality fails to work.
How to Replace a Backup Light Switch
The backup light switch connects to your transmission and turns on when you shift into reverse. This switch lets drivers know that you are backing up.
How to Replace a Fog Light Switch on Most Cars
A fog light switch goes bad when the lights do not come or are dim or flickering. A blown fuse may also cause the fog light switch to fail.
How to Replace a Cruise Control Clutch Release Switch
The cruise control clutch release switch is faulty if the cruise control will not turn off or shuts off automatically while driving.
How to Replace an AC Clutch Cycling Switch
An AC clutch cycling switch meters low side AC pressure. This switch helps the AC system maintain proper cabin and evaporator temperatures.
How to Replace a Front Axle Engagement Switch on Most Cars
The switch that engages the front axle fails when it gets stuck, does not activate the four-wheel drive, or is difficult to engage.
How to Replace a Power Window Switch
The power window switch fails when the windows are not working properly or not at all and when windows are only working from the master switch.
How to Replace a Fuel Pump Shut Off Switch
The fuel pump shut off switch may be faulty when the Check Engine Light comes on or if the engine suddenly turns off while driving.
How to Replace a Power Steering Pressure Switch
Cars with a hydraulic power steering systems use a power steering pressure switch for hydraulic efficiency. A sign of failure is sluggish steering.
How to Replace a Power Seat Switch
The power seat switch in your car lets you adjust your seat to your preferences. If broken, especially for the driver seat, it should be replaced.
How to Replace a Traction Control Switch
A traction control switch helps you keep control of your wheels on different surfaces. Signs of failure are a Check Engine Light or a broken switch.
How to Replace a Variable Valve Timing (VVT) Switch
An engine has a variable valve timing switch that fails when there is a reduction in engine power or the Check Engine Light illuminates.
How to Replace a Transmission Oil Pressure Switch
A transmission oil pressure switch relays measurements from the pump. If the filter is clogged, this switch puts the transmission into limp mode.
How to Replace a Cruise Control Vacuum Bleed Switch
Cruise control slows when the vacuum bleed switch activates. It fails if the cruise control deactivates automatically or will not hold the speed.
How to Replace a Heater Blower Motor Switch or Relay
The motor switch on your heater and air conditioning goes bad when the switch gets stuck in certain positions or will not budge at all.
How to Replace a Horn Switch
Your car horn works through the horn button. A faulty button can be hazardous and usually should be replaced by a professional.
How to Replace a Rear Window Defogger Switch
The rear window has a defogger switch that fails if the button does not light up, the rear window does not defog, or the switch does not always work.
How to Replace a Coolant Vacuum Valve Switch
A vacuum line attaches to the vacuum switch in your car as part of the engine’s heating and cooling system. A faulty switch can break your heater.
How to Replace a Cruise Control Switch
The cruise control switch goes bad when the cruise control does not turn on or accelerate. You may need a new switch if the car will not coast.

Related questions

Radio light goes out with the light switch turned on.
Hello and thank you for contacting YourMechanic. If the radio is a stock radio and not an aftermarket radio, then the lights should be tied into the dimmer switch. Turn the dimmer switch to adjust the lights and see if...
Sometimes my ignition switch won't turn all the way off on my 2006 Impala. What should I do?
Hi there. There are several possibilities for your key not turning fully to the off position. Being an intermittent issue, may make it difficult to diagnose. It could be, as simple as, a worn key. Try another key, don't duplicate...
Electrical issue with window
Hi there. If you are still unsure after testing both components, you could always make a switched jumper wire, or use a circuit tester that is capable of acting as a switch. This way, you can avoid having to buy...
The high beams won't work, and when I try to turn them on, all my other lights dim bright and the motor bogs down a little
Hi, thanks for writing in. The power for the headlights run through the switch on this truck (vs using relays to get full 12v to the bulbs. So the switch, or its connector plug has probably failed and must be...
The car turns off when shifting the gear to neutral automatically.
This is likely related to what is called a neutral safety switch. This is an electrical switch near your transmission that is designed to not allow the car to start when in any gear other than park. Occasionally, this switch...
Oil pressure switch was replaced but the Check Engine Light is still on.
Hello there, a few different things will cause your 2011 Honda Pilot to still have the Check Engine Light on after the oil pressure switch was replaced. The most common cause would be the code not being cleared after the...
My 1995 Honda Acoord runs in the start position but dies in run position on key switch
Hello. Most of the time, this issue is due to the ignition switch. The lock cylinder will not typically cause this. I usually remove the lock cylinder and make sure it moves freely when it is removed. If it does,...
My speakers keep cutting out and the window stopped working. The switch may have popped off the door.
Hi and thanks for your question. Check the wires in the door between the door and the cab. Sometimes the wires get pinched and short to ground with the door shut. If the wires are okay, then remove the door...
Brake lights won't light up, but the third will and they will turn on when lights are on.
The issue you are having is likely a faulty brake light switch. The fact the bulbs will light proves they are in good condition. The switch in located next to your brake pedal. When the brake pedal reach a certain...
My inside lights flickered and now they don't work
While it is possible that the bulbs have gone out, it is more likely that one of the switches have gone out. If the lights were activated by the door opening, the switch you are concerned with will be by...
Front passenger window will not go up
Hello. If the switches and fuses to that window are good then there is likely some sort of wiring issue. It may be possible that a broken or damaged wire is cutting off power to raise the window. I would...
I have no tail lights but all other lights work
Hey there. You should check to see if you have front parking lights. If the front parking lights work, then the rear parking lights will have bad bulbs or sockets for the bulbs. The front and rear parking lights are...
Turn signal lights keep failing, how can I fix this?
Your problem is electrical, and all of the components involving the the turn signals will need to be inspected. Unfortunately it takes some trial and error in testing to find the component that is failing. Considering the hazard button tends...
Engine overheating even though coolant fan was running
This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning...
Air conditioning clutch is not engaging unless I bypass the relay.
It does sound like an issue with the pressure switch. When the switch fails, the compressor will not come on. Bypassing it turns on the compressor, which changes the pressure and allows the system to work. I would also check...
Cooling fans
This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning...
Hi guys! The breaklights on my 2002 Acura RL are not coming on at all. I just replaced the brake light switch and still nothing; w
Good question. The other day I had the same issue. I replaced the brake light switch and still no brake lights. The issue I came across was that it had to be adjusted a little. If you take the brake...
My high beams dont work what could be the problem?
Hello and thank you for your question. The high beam switch sometimes tends to get stuck on low beams only. Check the high beam relay and see if it is clicking when the high beam switch is activated. If the...
I have a 2000 Ford Taurus. A couple weeks ago I was driving and I lost all electrical power to it. Now it will run but very badly.
Hi there. From the description you have given, your vehicle loss of electrical power could be a faulty ignition switch. It could also be, a poor ground pigtail at the negative battery terminal. The combination of inoperative electrical components leads...
The car won't start.
Hi there. Assuming that the battery is good, the connections are clean and tight, the replacement starter is good, the security light is turning off. There are several things that still can affect starter operation. If, the vehicle will start...

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