How to Fix Car Ignition Switch Problems
If your car starts and runs, but the ignition switch doesn't switch over the spark plugs, there could be a myriad of reasons for this. Some are simple and inexpensive to fix, while others require specialized tools and assistance from an expert mechanic.
The first step is to lubricate the socket of the key. You can use graphite powder, or a silicon aerosol spray. Also, ensure that the ignition cylinder is free of any obstructions and loose springs.
Battery
It could be that your battery is dead when your vehicle won't start. This is a common issue that can be fixed by an extra jump or charging the battery. If this does not fix the problem the ignition switch could be defective. This component is responsible for transferring battery power to other electrical components, such as the starter motor and the ignition coil. If the ignition switch is damaged it won't permit current to flow through it and the engine will not start.
The battery is the main source of the electrical energy you use in your vehicle. It's a dark box with positive (+) and negative (-) terminals that are on the top. The terminals can get corroded, preventing the battery from supplying power to the rest of the vehicle. By disconnecting the battery, you can use a wire bristle to remove any corrosion. You can also clean the terminals with a baking soda solution.
It's also possible that your car's battery has just reached the end of its lifespan and requires replacement. A new battery will provide the correct voltage to your vehicle’s spark plugs. This is crucial for a properly functioning engine.
The ignition coil is responsible for converting low voltage from the battery to high voltage that can ignite the spark plugs of your car to start the engine. If the ignition coil is damaged and is not capable of sparking the plugs, and the engine won't start. You can test the ignition coil by checking for a spark in the engine or turning the key to see whether the engine is turning.
You may also need to replace the starter motor. If you hear a grinding sound when you turn the key in your ignition, it means that the bearings inside the starter are beginning to wear out. This can be a costly repair so it's recommended to replace the starter motor early on if you notice any signs of wear and wear and tear. The starter motor can be replaced by replacing the bolts and parts.
Alternator
The alternator is the one that charges your battery and powers the electrical parts of your car when the engine is running. Test the battery first if you suspect your alternator may be malfunctioning. This will allow you to determine if the alternator is causing your battery to drain or your battery is simply old and requires to be replaced.
Your car's alternator also provides power for the windshield wipers, dash lights and electric steering, power windows, heated seats and your radio while the car is running. You can use a voltmeter to examine your battery and alternator for proper voltage levels. If your battery's voltage is lower than 6 volts, it should be replaced or charged right away. A low or dead batteries can also stop the starter from turning the engine over and may require additional jumper cables to begin your vehicle.
Before you begin to dismantle the alternator, switch off the ignition and lock all doors. Unplug the negative cable and store it safely. Wear safety equipment. Refer to a repair manual specific to your vehicle to get instructions on how to remove the alternator, or any other parts.
Once you've removed the belt, if the vehicle has one remove the warning light wire from the back of the alternator. It will typically connect directly to a terminal on the alternator that's labeled WL or IND. Certain vehicles have a separate relay to perform this function. If your warning light doesn't appear, it is likely that you have a different issue.
The alternator is a vital component in your vehicle, and you should examine it regularly to look for signs of problems. You can carry out certain of these tests yourself, but it's best to bring your vehicle to Les Schwab so they can look it over and provide you with expert advice. Our technicians will test for corrosion on your battery, battery posts (+ and -) and relays, fuses, and voltage output, cold starting amps, and more.
Starter Motor
The starter motor is an essential component of the ignition system. It turns the engine over so that air can be sucked in which will ignite the fuel. If your car isn't starting, it is often due to a malfunction in the starter motor. There are several troubleshooting methods that can help you diagnose the issue and resolve it.
When you turn the key in the ignition of your vehicle, a switch on the starter engages with an pinion gear that is fitted into grooves on the flywheel. The pinion gear turns the flywheel which begins the engine. The gear retracts once you release the key to prevent damage.
There are a myriad of things that could cause problems with the starter motor, including an electrical failure in the internal windings, a mechanical problem (such as teeth no longer meshing with the pinion gear or flywheel) or a dead battery. A defective starter motor will sound like a dead battery. it'll make a click as it tries to turn the engine, but it won't.
If the starter motor isn't functioning, one of the first things a mechanic would examine is the condition of charge of the battery and its terminals. If the battery is corroded or is low it needs to be charged or replaced.
Depending on how serious the issue is, the mechanic can test the solenoid by using a multimeter. The solenoid is a massive magnetic switch that sends a rush of power from the battery cables that are long and thick to the starter. The switch connects the long battery cable to windings within the starter that turn the electric motor and also pushes a rod that actuates an engaging fork which will then push the gear pinion to automatically engage with the flywheel.
A jumper wire can be used to disable the ignition. This is a temporary solution but it shouldn't be recommended unless you are able to perform it correctly. You'll need to route the jumper wire to battery terminals and make sure the switch is set to the "Start" position.
Ignition Switch
The ignition switch is where you insert your car key. This will enable electrical flow to your starter and start up the engine, however it isn't immune to wear and tear as other car parts. The switch can also get stuck inside its slot or become locked. It's important to check it frequently for problems so that you can act prior to the car not starting.
If your key is a struggle to turn or it gets stuck in the ignition, it may have been locked. This is a common problem for many vehicles and is due to a lack lubrication. You can use a silicone or graphite-based lubricant to lubricate the release pin. Spray a bit of it into the ignition, and then try moving the key. If it's stuck you can try using a hacksaw or piler blade.
An ignition problem could cause a host of other issues, too. The anti-theft feature may stop working or the starter motor could not turn on when you insert the key. This can also cause the auxiliary functions to stop working or lose power.
A damaged ignition switch could cause lots of wear and tear on other components. For instance, if have a heavy keychain or multiple items on your keychain, it can strain the ignition switch when you put it in and accelerate the wear and tear on its internal components. car ignition key replacement may affect the lubricants and materials used in the ignition switch.
Once you have a replacement ignition switch, it's important to test it prior reassembling the steering column and the other components. Check that the replacement is working and that the engine starts without issues. You should also double-check that the new ignition switch is compatible with the vehicle's make and model. If you're not sure of your ability to install the new ignition switch it could be worth hiring a dealership service shop to install it for you. They will also test the replacement and install any other components that require connecting or replaced.