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electrical system

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Symptoms of a Bad or Failing Fuse
If your car's accessories are shutting off on their own or you find a black fuse, you should inspect the car's fuses and replace broken ones.
Symptoms of a Bad or Failing Distributor O Ring
If your car has a distributor, common signs the o-ring must be replaced include oil leaks and engine performance issues.
How to Inspect Car Fuses
A fuse is a low-resistance resistor device that protects a circuit from becoming overloaded. It is a short piece of wire that is designed to melt...
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.
Symptoms of a Bad or Failing Tail Light Lens
A cracked tail light lens will progressively get worse until the tail lights won't work, so make sure to routinely check them before they fail.
Symptoms of a Bad or Failing Alternator
Common signs include having to jump start the car frequently, dim lights when operating the vehicle, or the Battery Light coming on.
How Long Does a Fuse Last?
The electrical system that is on a car plays a large role in ensuring that everything is running efficiently. There are a number of different things in a car that will require a...
Symptoms of a Bad or Failing Electronic Spark Control
Common signs include engine performance issues, engine stalling, the car not starting, and the engine not sparking.
How Long Does an Electronic Spark Control Last?
The job of the electronic spark control is to control the engine timing. This part can also be called the "knock sensor", as it monitors any unusual knocking, or vibration that...
Symptoms of a Bad or Failing Electronic Ignition Pickup
If your car has an electronic distributor ignition system and the engine stalls or car does not start, you may have to replace the ignition pickup.
How Long Does an Electronic Ignition Pickup Last?
Your vehicle depends on electricity in order to run, and this electricity can be traced back to the spark plugs which create a spark to ignite the fuel. It’s a whole...
Symptoms of a Bad or Failing Electronic Control Relay
If your engine cranks but does not start or powers on but does not function, you may need to replace the electronic control relay.
How Long Does an Electronic Control Relay Last?
So much of your vehicle relies on electronic components nowadays. They all work in conjunction with one another, so that means when one fails a domino effect takes place, and they...
Symptoms of a Bad or Failing Daytime Running Lamp Module
If your daytime running lights do not come on, stay on when the car is off, or produce a burning smell, you may have to replace their module.
How Long Does an Ignition Coil Last?
The combustion process that happens when your car is cranked is vital in order to get the car moving. In order for this process to take place, a number of different components...
How to Replace an AC Control Module
AC control modules fail when the air does not distribute fully. If the temperature is inconsistent, the control unit may be at fault.
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 Bad Driving Prematurely Wears Out Your Car
Bad drivers and bad driving habits can cause strain on car parts, especially the tires, brakes, body, and electrical and steering systems.
How to Replace an Instrument Voltage Regulator
The instrument cluster has a voltage regulator that fails when the panel is dim or flickering, reads erratically, or is totally inoperable.

Related questions

Question
My car stalls with weather under 40' or moist out.
Hi there. There could be two things that are contributing to your issues with the vehicle that are playing a big roll in this. First check the manifold absolute pressure sensor (MAP) on the engine. Check to see if the...
Question
Cant get cluster mph, gas, temp gauge to work.
Hello. From what you are explaining it sounds like you may still have another blown fuse or it is possible that you have a wire that may have melted when this short occurred. I usually start by double checking the...
Question
Dim dashboard lights..slower electrical functions
Hi there. In order to give you the best information I would need to know what kind of vehicle this is. From what you are explaining though it does sound like there is an issue with the electrical system. These...
Question
No power to the front of my car- 2003 Infiniti
Hi there. If you have lost all of the electrical power to the front of your car then it may have blown a fuse. I would like to know if the power is isolated to just the lighting or if...
Question
Vehicle won't start
There may be a main power circuit down on your car. The steering lock is electrically disengaged on your car as is the shift lock. One of the B positive terminals on your ignition switch is probably dead. There are...
Question
previous dead battery fir no apparent reason. now switches on steering column not working. no lights turn signals wipers
Hello. You should start by asking yourself if the battery died because it was old and malfunctioning, or if the alternator and charging system components strained it. There is an obvious electrical issue that is stemming from a main source...
Question
Transmission staying in 3rd gear only and not shifting.
Hi there. The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that...
Question
Reduce power engine - strange electrical behavior 2011 Chevrolet Impala
Hello - this problem is caused by electrical system faults which are unique to your year/make/model. Chevrolet has issued a technical service bulletin which addresses these symptoms (# 292284), which are related to your digital dash electronics. Discuss this problem,...
Question
My mechanic just replaced the transmission unit and the dashboard warning light come on and engine it doesn't start. can you please help me?
Hi there. Hybrid vehicles will not start the engine when moving in short light throttle distance. So, drive the vehicle for a distance and see if the engine will start. If the engine does not start up at all, then...
Question
Heater is blowing mixed temperature air into the cabin area.
Hi there. Check the blend doors to the heater system. The doors could have a leak with the weather stripping. Then check the air ducting in the dash up by the heater blower motor and see if there is a...
Question
The convertible top stopped working suddenly.
Hello there, many common faults will cause your 2006 Volkswagen Beetle convertible top to not function. It is great that you have performed the reset procedure already as that is typically the first step in diagnosis. In most cases when...
Question
No power steering, no power, no lights
Does the vehicle start and or run? When several systems are effected it is likely a wiring issue. You may be experiencing failure of the fuse box panel, or major electrical ground somewhere. If you own a voltmeter, you can...
Question
Everything stopped working in my car - 2001 BMW 316ti
Hello - I suspect the wiring modifications necessary to add the nav system either overloaded a circuit, or somehow damaged something BMW calls the "lighting control module". The LCM as it is called, does all the power control switching for...
Question
Electrical - 2007 Mercury Montego
Hello - based on the documentation I have available, fuse #48 is for the fog lights. Perhaps there is a short in the wiring? If so, It is more than likely near the bulb itself, since that area is exposed...
Question
Intermittently, the transmission will start shifting poorly, and the gauges will start to behave erratically.
Problems like these can be tough to diagnose as it seems several systems that share communication are acting up at once. If the vehicle history shows it was in a accident or maybe a flood, there may be a circuit...
Question
Running lights, instrument panel light, and turn signals do not work
Hello. With electrical issues like this you want to turn your attention to the components that can effect more that one system at once. These areas include shorts in a socket, a short where these systems all have wires running,...
Question
My speedometer, odometer, and RPM meter all go in and out of operation. What could cause this?
The speed sensors used to calculate the readings on the instrument cluster often cause drivability problems when they fail like weird shifting or the car won't start so I'm leaning toward a malfunction in the cluster itself or a loose...
Question
Car won't start but the electrical stuff is working
A no-start or start-then-stalls issue can be caused by a couple of different things. A bad smart key can be one of them. Use the second smart key provided with the vehicle to try starting the vehicle. If it starts,...
Question
Blowing fusible links
Hello there: In most cases, when a fuse relay continues to break, it's an indication of an exposed wire that is causing a short circuit situation or a poor ground. As issue like this can be difficult to pinpoint, the...
Question
My Tach doesn't read correctly sometimes. Power locks and wiper blades don't work all the time.
The problem with your tach sounds like it may be within the mechanical workings of the tachometer itself. If the gears that moves the needle around start to wear, you may have a bouncing needle or it can stop in...

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