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relays

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How Long Does an Automatic Shutdown Relay Last?
When you start your car, a number of things happen. The fuel pump delivers gas through the fuel lines to the fuel injectors, and the battery delivers voltage to the ignition...
How Long Does a Condenser Fan Relay Last?
The condenser fan relay allows the cooling fan to pull air through the radiator and the condenser to cool the vehicle. This part is connected to the condenser fan and is...
How Long Does an ECM-Power Relay Last?
As technology continues to advance and move forward, so does the way our vehicles operate and run. It seems more and more parts rely on computers and sensors than ever before. The...
How Long Does a Fog Light Relay Last?
All vehicles come equipped with headlights, and some vehicles offer you more in terms of lighting. Fog lights are a popular option with drivers as they are perfect for foggy conditions...
How Long Does a Main Relay (Computer/Fuel System) Last?
Common signs include the engine not starting, inability to stay running for a long time, and no communication with scan tools.
How to Replace an Automatic Shutdown Relay
The ASD (Automatic Shutdown) relay is failing when electrical functions in the vehicle are inoperative or when the car will not start.
How to Replace a Door Lock Relay
Electric door locks work via a door lock relay located near the brake pedal, behind the stereo, behind the passenger air bag, or under the hood.
How to Replace an Air Conditioning Compressor Relay
The air conditioning compressor relay supplies power to the compressor for AC function. This relay should be replaced if it's proven to be faulty.
How to Replace an Intermittent Wiper Relay
If the windshield wipers function on high and low but do not work on the intermittent setting, then your intermittent wiper relay may be faulty.
How to Replace a Cooling Fan Relay on Most Vehicles
Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. A broken fan relay means the radiator cannot cool down.
How to Replace an Ignition Relay
Common signs of a damaged or broken ignition relay include a low/dead battery, the car stalling or not starting, or loss of power to the dash lights.
How to Replace an Electronic Control Relay
Electronic control relays are tied to many components in your car. When an electronic part doesn't work in your car you may need to replace a relay.
How to Replace a Starter Relay
Starter relays are faulty if there are problems starting the engine, the starter stays on after cranking, or a clicking noise comes from the starter.
How to Replace a Fuel Pump Relay
The fuel pump has a relay that fails when there is no audible humming sound as the ignition is turned and when the car cranks after longer than usual.
How to Replace an Anti-Lock Brake System (ABS) Fuse or Relay on Most Cars
Anti-lock brake systems have a fuse that fails if the ABS brake light is on or when the fuse is blown. The wheels may lock up if the ABS fuse is bad.
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 Relay
A car horn uses a horn relay to power it and make sound. A faulty relay can be replaced by safely disconnecting the old one and plugging in a new one.
How to Replace a Headlight Closure Relay
Your headlights depend on the headlight relay located in your vehicle’s fuse box. Occasionally these relays need to be replaced.
How to Replace a Condenser Fan Relay
A condenser fan relay operates the fan that removes heat from the engine. If faulty, it will not allow the A/C to blow cool air or function at all.
How to Replace an Anti-Lock Control Relay
ABS brakes use an anti-lock control relay to regulate the pressure of the brake fluid in the ABS system. The control relay breaks down over time.

Related questions

Question
Do you know where the horn relay is located in a 1997 Honda Odyssey?
Hello, thank you for writing in. The main fuse box which houses the horn relay is under the hood to the left (passenger) side of the vehicle. When you remove the lid to the fuse box, turn it over and...
Question
Where is the AC Compressor Control Relay on a 2001 Chevy Malibu located?
The A/C control relay is in the "Fuse Relay Center" which looks like a black plastic box in the under hood area. The relay may be a micro relay and will be labeled "AC Clutch". If you have a non...
Question
engine cooling fan keeps running after car is turn ed off. New fan installed. problem still happens. aslo coolant and temperatu
A fault with a fuse would more likely result in non operation rather than continuous operation. ECM's rarely go bad, indeed of the ones "claimed" to be bad, that is of those sent in as warranty returns, based on surveys...
Question
I hear a click then my headlight go out then I turn the lights off hear a click about a few seconds later I turn the switch back o
The uncommanded, intermittent shutdown of the headlight circuit might be due to a relay opening or a defective headlight switch. It will be easy to find the problem at the instant it recurs by simply tracing the circuit to see...
Question
When I turn on my AC the radiator fans do not turn on. The fans do come on when the car warms up so I know they are working and the fuses are good. The AC compressor does come on and the air blows ice cold when the car is moving. Car is a 2006 Chrysler Sebring Sedan 2.7l v6.
The control circuit for the fans needs to be checked. For example, there is usually a condenser fan relay in the A/C electrical controls. There could be a fault with that relay and/or wiring problems, perhaps even just a loose...
Question
My ac clutch is not engaging, but there is no relay in the fuse box for the ac compressor
If a mechanic told you only that the compressor is not "engaging" that is essentially a useless diagnostic because it is too cryptic and too vague. The compressor in the system will only operate if the compressor clutch is engaged....
Question
My windshield wipers won't turn off on my Cadillac CTS 2005.
The switch contacts are welded (stuck) shut OR the circuit is being powered due to a wiring fault or some sort of short. It is also possible that relay contacts in the wiper circuit are stuck on, regardless of switch...
Question
Why would my battery drop and my car start running rough only when turning on A/C?
It sounds like you have a sticking a/c clutch relay intermittently. I would start with try to replace the relay control box for the a/c clutch and see if it continues to have the problem.
Question
What does it mean when the MIL stays on after car if shut off?
You may have a sticking EFI relay in the main fuse box in the engine compartment. This relay if stuck on can keep power to the computer to turn on check engine light. Replace the relay and then retest. ...
Question
Intermittent failure to start.
Check the starting of the vehicle in park and in neutral. If the vehicle starts all the time in neutral, then the neutral safety switch needs replaced. If the engine does not start every time on whether the transmission is...
Question
No power to fuel pump fuse or relay.
Check for a resistance from the relay to the ignition switch with the key on and the relay removed. If the ohm meter reads OL, then the circuit has a break in it and it needs repaired. If the meter...
Question
Hello,can you please locate me the relay of the fuel pump of 2005 mini cooper.Thank you!
Hello, the fuel pump relay is located left front strut tower engine area. It is housed in a fuse and relay center. The fuse for the fuel pump relay will be close to the relay. There may be a location...
Question
Need to know the A/C relay location on a 1982 European Mercedes-Benz 280sl.
The relay is on the driver side right next to the brake booster and master cylinder. It looks like a large black block by the fender. For the compressor to not have power to it, check the low pressure switch...
Question
2008 Ford Mustang GT Stalls after warm up as if it ran out of gas and won't restart until engine is cooled
The issue is the fuel pump relay on your fuel system. The fuel pump relay is getting hot and shutting off the fuel pump. Then when you shut off the engine and key to the ignition switch, the fuel pump...
Question
Starting issues
Hello and thanks for writing in. Depending on what the vehicle does when trying to start it may help to narrow this down. If it produces a click sound, this may be related to a faulty starter solenoid. If it...
Question
Car will overheat if I don't have the fan on. When fan is off it doesn't come on to release heat from engine. So the fan is always on.
Check the wiring to the coolant temperature sensor and see if there is power to the sensor switch. If there is no power, then check the cooling fan relay and see if its clicking on. If there is no clicking...
Question
I have a 2006 Honda Accord and the dash lights and radio willl sometimes go off then come right back on when I'm going about 40 mph.
The code P0685 refers to the main ECM (computer) relay has lost power. Check the main relay and see if its getting hot. A hot relay will disconnect to cool off and reconnect. If the relay is getting hot, then...
Question
01 TDI won't start when warm.
The computer is making the beeping noise as there is an issue with the starting circuit or main power circuit. Check the start relay and the main computer relay. See if they are getting hot. A hot relay will disconnect...
Question
98 Nissan quest jerks, skips, and rpm's bounce, when it warms up.
Hi there. The symptoms sound like the fuel pump relay is getting hot and cutting off the fuel pump. Check the fuel pump relay and see if its getting hot. If the relay is getting hot, then the fuel may...
Question
I can't locate the headlight relay for my 1992 Oldsmobile Bravada 4.3L type W.
Hi there. Check under the dashboard around the mounting surface for the steering column and you will see a fuse box. In that fuse box you will find the flasher and a relay. The relay is for the high and...

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