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How to Fix Car Ignition Problems

The car won't start unless the switch sends an electrical signal to the starter. Over time wear and tear may cause the switch to fail.

Using specialized tools, you can remove your steering column trim and access the ignition cylinder module. Check your repair manual for guidance on how to do this in a safe manner.

1. Check the Switch

A malfunctioning switch is among the most frequent ignition problems. It controls when relays are activated and deactivated through the use of bridge. It is less likely to fail because it doesn't channel full power of devices such as the starter. However, it's still possible for the switch to become damaged or damaged or corroded.

One indication of a defective switch is a difficulty turning the key. This could be due to various reasons that include incorrectly inserting a key or wearing down the mechanism over time. It's also commonplace for people to mistake their keys to their car with those of another's, which could lead to mechanical damage.

Before calling a locksmith you can try a few things. First, you'll want to make sure the battery is fully charged and that there aren't any other electrical issues in the system. You should also check the voltage of each component to determine if they're supplying adequate power. After you've completed these steps, you can begin troubleshooting.

Luckily the ignition switch is pretty simple to replace. It's connected to the ignition cylinder, a round module that connects everything. You'll need a flathead and a piece of material that is long enough to press the pin in. You can make use of anything from a paintbrush, to a Kabob stick, but you should avoid anything brittle as it could be broken into the hole.

Once you're ready to complete the work, you'll have to take off any trim pieces that cover the area around the ignition switch. After you've removed the trim pieces remove any screws that are holding the switch in place. Then carefully pull it out. Depending on the model, you might be required to disconnect any wires that connect to it. If you have an instruction manual for your vehicle it will explain exactly how to do this.

If the ignition switch isn't working, it's best to replace it by a professional. Replacing it can involve disabling the steering column which could result in unintentional deployment of airbags if done in a wrong manner. It is best to allow your locksmith to handle this.

2. Verify the Wire

If you are unable to turn the ignition key or your car isn't starting, your issue could be related to any number of components in your car's ignition system. It's important to understand how the ignition system works so that you can pinpoint issues and make the necessary repairs.





The ignition switch is an electrical switch with multiple poles that is operated by the key. It has four positions: off, accessory, run and "lock." If the switch is in the lock position (which usually has the red indicator) the ignition circuit is active and it is not possible to start the engine.

To determine whether the ignition switch damaged or if the ignition coil itself is faulty, you'll have to conduct an electrical test using an Voltmeter. When the ignition switch is set to run at a certain voltage, the voltmeter should read about 12.6, If the voltage is below that, there is an open circuit somewhere within the system. This could be at the solenoid, the battery or the ignition coil itself.

Connect the electrical connector to the ignition switch so that there are no other components that could interfere with your test. Then set the voltmeter to the continuity or resistance mode and place one lead on one of the ignition switch's terminals. The other lead should go to the positive terminal of the battery. If the voltmeter shows "open" or fails to register any voltage, you must replace the switch.

If you're changing the switch, make sure to use a new ignition cylinder and a top quality key cut to ensure that your car will start and run correctly. When replacing the switch, ensure not to strike the pins of the cylinder's ignition with your tools. Otherwise, they will get stuck and your engine won't be able to run. In certain vehicles, you'll need remove the steering column and the gear selector in order to access the ignition cylinder. This isn't easy and is not recommended unless you have an owner's guideline that says it's safe to do this. If you don't, it is possible to cause serious damage to your steering column and shift mechanism.

3. Check the Cylinder

If you've gone through the battery, wiring and ignition switch but cannot get your car to start, it might be time to check the cylinder. The cylinder is the component that holds the key. It is mechanically connected to the steering lock to ensure that burglars won't be able to drive the car if it's not there.

You might observe that your key will not rotate if the cylinder is worn out. The pins in the cylinder can get stuck as they adjust to the shape of your key. This can cause your car to not start. The cylinder might also be loose. A tap with the tackhammer can aid. Be careful not to mix up the springs and ensure that the key is correctly placed.

If you need to jiggle and move your key before it will start, this is another indication that your cylinder is become damaged. This is a sign of trouble, and it must be addressed immediately because it will get worse over time.

To test the cylinder, you must remove the cover for the steering wheel and disconnect the battery. The old ignition switch should be easy to remove, as well as the cylinder for ignition made of metal. If you don't have an additional ignition switch around, it's likely possible to take your original ignition switch and the cylinder to a locksmith in order to reuse them, as long as they are in good condition. After replacing the switch and cylinder make sure you connect the wiring harness, secure it in place and reattach any covers, or panels you've removed.

4. Check the Spark Plugs

The spark plug is your ignition system's final link. When it breaks, the engine can't run. It could be in the form of your car not starting at all, or may start but not run well. In car ignition key replacement of these scenarios, it's likely that one or more things are preventing or impeding electricity from jumping across spark plug gaps, which in turn ignites the air and fuel mixture within your engine.

Before you begin working on your spark plugs, make sure that you are working on a safe surface, employing protective gloves and tools to keep from being struck. Spark plugs can be very hot and can cause serious injuries if they are touched with bare hands.

You may notice a light brown or gray residue on the edge of the electrode if the spark plug is damaged. The electrode could also have an opaque coating. The deposits or fouling may prevent high-voltage electrical current from crossing the gap between your spark plug and igniting an engine.

If you suspect that your spark plugs may be to blame You can test them by removing them from their tube inside the ignition coil. You can do this by disconnecting the coil from the plug wire, and following the proper procedure for your vehicle to remove the components that cover the spark plugs. After removing the plugs, place them on a surface that is grounded, and begin the engine. If they're functioning you will see a bright blue spark at the tip of central electrode.

If you don't see a spark you have identified the problem. The next step is to go backwards through the ignition chain and test each part until the spark plugs are no longer functioning. It's important to remember that all systems wear out and break over time and this is particularly applicable to ignition systems. However, regular maintenance can help slow the process down and avoid a major headache at the worst possible time.