How to Fix Car Ignition Problems

A car won't start unless the ignition switch is sending an electrical signal to the starter motor. Normal wear and tear over time can result in the switch not functioning properly.

Using special tools, you can remove the steering column trim and gain access to the ignition cylinder module. Refer to your repair manual for learn how to do it right.

1. Make sure you check the Switch

A defective switch is one of the most common ignition issues. It acts as bridge between two contacts, regulating the time when relays are activated and deactivated. It is less likely to fail due to the fact that it doesn't channel full power from devices such as the starter. It is still susceptible to being damaged or corroded.

A malfunctioning switch is recognized by a slow time turning the key. This can be caused by many things that include incorrectly inserting the key or the mechanism wearing out over time. It's not common to see people mix their keys up with someone else's. This can cause mechanical damage.

Before calling a locksmith you might want to try a few things. First, you'll want to ensure that the battery is fully charged and that there are no other electrical issues within the system. You should also verify the voltage of every component to ensure that they are supplying enough power. After you've completed these steps, you're ready to begin troubleshooting.

The ignition switch is easy to replace. It is connected to the ignition module, a round piece of equipment that connects everything. You'll need a flathead and something long enough for you to press the pin in. It could be anything from paintbrush handles to Kabob skewer, but you should stay clear of anything that is brittle and break within the hole.

Remove any trimming pieces that overhang the switch when you're ready to go. After taking off the trim pieces, remove any screws holding the switch in place. Then, gently pull it out. Depending on the model, you might also need to disconnect the wires that connect to it. You can find out how to do this in the instruction manual for your vehicle.

If the ignition switch isn't functioning, it's best to have it replaced by professionals. It is possible to replace it by turning off the steering column, which could result in unintentional deployment of airbags if done in a wrong manner. It is recommended to leave it to your local locksmith to handle this.

2. Check the Wiring

Your car ignition lock might not start if it is difficult to turn the key or if it isn't starting. This could be due a variety of components in the ignition system. Understanding how the ignition system functions will help you identify problems and make the necessary repairs.

The ignition switch is a low-voltage multi-pole electrical switch that is turned by the key. It has four positions: off, accessory, run and "lock." When the switch is locked (which is typically shown by a red light) the ignition circuit is activated and it is impossible to start your vehicle.

You can use a voltage meter to quickly test the ignition switch and ignition coil. When the ignition switch is set to run and the voltmeter is reading around 12.6, If the voltage is below that it indicates that there is an open circuit somewhere within the system. It could be the solenoid, battery or the ignition coil.

Remove the electrical connector from the ignition switch to ensure that no other components can interfere with your test. Then set the voltmeter to the resistance or continuity mode and put one lead on one of the ignition switch terminals. The other leads should go to the positive terminal of the battery. If the voltmeter reads "open" or doesn't show any voltage, it's time to replace the switch.

When changing the switch, make certain to use a new ignition cylinder as well as a high quality key cut to ensure that your vehicle will run and start correctly. When replacing the switch, be sure not to strike the pins of the cylinder's ignition with your tools. In the event of a collision, they'll get stuck and the engine won't run. In some vehicles, you'll have to remove the steering column and the gear selector in order to access the ignition cylinder. This isn't easy, and it is not recommended until you have an owner's manual that states it's safe. Otherwise severe damage to the steering column or shifting mechanism is likely.

3. Check the Cylinder

If you have tried the battery, the wiring, and the ignition switch but still cannot get your car to start It could be time to inspect the cylinder. The cylinder is the component that holds the key. It is mechanically attached to the steering lock to ensure that burglars won't be able to drive the car ignition replacement without it.

You might notice that your key will not rotate if the cylinder is worn out. Sometimes, the pins in the cylinder get stuck as they adapt to the shape of your key, which could cause your car ignition key replacement to not start. Alternatively, the cylinder may be shaky however a tap using the small hammer from a tack can assist in releasing it. Just be careful not to disturb the springs within and make sure that your key is properly inserted before tapping.

Another sign that your cylinder is going bad is if you have to move the key around and try multiple positions before it starts. This is a red flag and should be corrected immediately, as it will continue to get worse as time passes.

To examine the cylinder, you'll need to take off the steering wheel cover and disconnect the battery. The old ignition switch should be easy to take off, as will the metal ignition cylinder. If you don't have an extra switch, you might be able take your original ignition cylinder as well as switch to locksmiths for reuse as long as they're in good working order. After replacing the switch and cylinder ensure that you reconnect the wiring harness and secure it and reattach any covers or panels you removed.

4. Check the Spark Plugs

The spark plug is the final link in your ignition chain. The engine cannot start when the spark plug is broken. It could be that your car will not start at all or it will run poorly. In either case, the reason is likely to be one of a few things that hinder or prevent electricity from jumping across the spark plug gap, which allows your engine's gas and fuel mixture.

Be sure to wear gloves and protective tools before you begin working with your spark plugs. Spark plugs can get very hot and can cause serious injuries if they are touched by hands without gloves.

There may be a slight gray or brown fleck on the top of the electrode when the spark plug is defective. It could also have a black layer on the side of the electrode. These deposits or a build-up of fouling could stop high-voltage electrical current from jumping across the gap between the spark plug and starting an engine.

If you suspect that your spark plugs are at fault, you can test them by removing them from their tube in the ignition coil. This can be done by disconnecting the coil from the plug wire and following the proper procedure for your car to remove the components that cover the spark plugs. After removing the plugs place them on a metal surface that is grounded, and begin the engine. If they're working, you should be able to see a strong blue spark extending across the gap in the middle of the central electrode.

If you don't see a spark, you have found the issue. The next step is to work back through the ignition system chain, testing each component until you find out what's stopping the spark plugs from doing their job. It is important to keep in mind that all systems wear down and break over time and this is particularly true of ignition systems. Regular maintenance can reduce the time it takes to repair and prevent major problems at the worst time.