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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...
Symptoms of a Bad or Failing ECM-Power Relay
If there is no power when the key is inserted, the engine will not start, or the battery is dead, you may need to replace the ECM power relay.
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...
Symptoms of a Bad or Failing Fog Light Relay
Common signs include a clicking sound from the relay and the fog lights either not turning on or not switching off.
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.

Related questions

Air conditioning light - 2001 Honda Civic
Hi there, check the A/C relay for being stuck in the "On" position. Relay contacts degrade over time and use, and can stick together when burned. The result would be the A/C light staying on, even though you press the...
Where is the cooling fan relay located?
For the Kia Soul, the low and high fan relays are located in the engine compartment fuse relay panel box. There is also a 30 amp fuse in the same location that powers both relays. The 2008 Hyundai Elantra cooling...
Car won't start - Jeep Liberty
Hi there. From the description you have provided, I assume you have bypassed the ignition switch to determine that the battery and starter are good. If so, and if you are turning the key and only hearing a click, I...
Relay keeps getting hot and turning truck off
Hello. Your vehicle has over ten identical relays in the vehicle. You will need to be more specific with what relay is overheating. The most likely cause of an overheating relay would be a fuel pump relay getting hot from...
Turns over has fire will not start tell I put gas in throtlebody
If it tries to run when you add fuel, it would seem that you have a fuel system problem. There aren't many tests you can do without special equipment but here is one: Locate the fuel pump at the right...
Condenser fan won't turn on.
You can test the fan motor by applying power directly to the fan plug terminals (observe polarity, based on the wiring diagram). If the fan runs on 12 volts applied directly, the problem is in the control circuit, which you...
Fuel pump running with car off
Hello. A fuel pump that stays on when the ignition is turned off can be caused by a few things. If you do not believe that the behavior is normal, then it may be possible that the the ignition switch...
I moved my truck and it started fine. Went to get back in it and it wouldn't start just a faint single click.
You may have a problem in your wires somewhere. If you have a wire short it could possibly cause this. However, you may have a faulty part. Look for wires around your starter that may be touching the frame. Is...
I touched the positive and negative battery terminals together, now the car has no power at all
Everyone does this at some point. Sounds like there may be an issue with your starter. When you grounded the battery out, those wires are also connected to your starter and could have arced it out. But first, check your...
I have Chrysler 300c. Battery light came on, changed battery and alternator but power still getting drained and battery light still comes on.
Hi, thanks for writing in. This may be a sign of a failing starter relay. The starter relay is a small unit near the starter that directs power to the starter from the battery. When this fails, it may cause...
Auto shutdown relay clicks and won't stop until negative cable is off
Hi, thanks for writing in. This may suggest a short of some kind causing the power to continue to be supplied to the relay. The starter relay is a small unit near the starter that directs power to the starter...
My car will not start when I turn the key, it just makes a clicking sound. What is wrong?
A starter like any other mechanical and electrical part is subject to failing sometimes for no apparent reason. However, sometimes this is misdiagnosed as well and often times mistaken for something much more simple like a fuse, relay, or starter...
Power lock relay not working?
Hello. Lock system issues are common with your 2003 Dodge Ram. When parts start to fail, it is usually intermittent and can be hard to find at times. The most common causes of failure are the lock switch, lock actuator,...
I put a new alternator in my car yesterday it started up fine about the third time starting the car to starter relay just clicks w
A starter like any other mechanical and electrical part is subject to failing sometimes for no apparent reason. However, sometimes this is misdiagnosed as well and often times mistaken for something much more simple like a fuse or starter relay....
Car will not start - 2010 Mercedes E550
Hi there. The job of the starter relay and the fuse that supplies power to it, is to activate the starter motor to spin when the ignition circuit has been activated. Since you've hooked up a battery (by attempting to...
My inside lights won't come on.
Hello. The dome light is triggered by a switch in your door or the manual switch on the dashboard or on the fixture itself. Due the fuse being checked and testing good, you are going to need to test for...
What isn't working in my car? It's overheating only when I'm stopped in traffic or in a drive-thru.
It sounds like you may have a cooling fan not working. The cooling fan draws air across the radiator to lower the temperature of the coolant. This occurs at a specific temperature and a fan switch, usually on the radiator,...
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...
My car keeps dying, but makes no indication before it dies.
This can be a tricky one as the computer communication system was very limited for this vehicle. However, there are a few things you can watch for and check. First, inspect the fuel pump relay (circuit opening or CO in...
2004 Honda Civic LX. The entire electrical system pulsates with the engine. New battery and had the alternator tested.
Hi there. From the description you have provided, your vehicle's pulsating electrical system is an unusual problem. The main relay is not likely to cause your vehicle's electrical issue. The fact you have been driving your vehicle this way for...

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