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How to Fix Car Ignition ProblemsThe car won’t begin unless the switch sends an electrical signal to the starter. Normal wear and tear over time can result in the switch not functioning properly.You can remove the trim on your steering column using specialized tools to access your ignition cylinder module. Refer to your repair manual for guidance on how to do this correctly.1. Make sure you check the SwitchOne of the most frequent ignition problems is a bad switch. It acts as bridge between two contacts, and controls the time when relays are activated and deactivated. Because it doesn’t transmit the full power of devices such as the starter, it’s a lighter-duty component that’s less likely fail. The switch can still be damaged or damaged or corroded.One indication of a defective switch is a difficulty turning the key. This can be due to a number of factors, including incorrectly inserting a key or wearing down the mechanism over time. It’s also commonplace for people to mix up their keys to their car with those of the keys of someone else, which can cause mechanical damage.If the switch isn’t working there are a few things you can try before calling a locksmith. First, you’ll need to make sure that the battery is charged and that there are no other electrical issues within the system. You should also check the voltage of each component to determine if it’s providing enough power. Once you’ve completed these steps, you’re ready to start troubleshooting.Fortunately, the ignition switch is pretty easy to replace. It’s connected to the ignition cylinder, which is a round module that connects everything. To replace it, you’ll require an flathead screwdriver as well as something that is long enough to push the pin inside. It could be anything from a paintbrush handle to a kabob skewer, but you should stay clear of any brittle material that could break within the hole.Remove car ignition lock cylinder trimming pieces that cover the area around the switch when you’re ready to get started. Once you’ve done this, loosen and remove any screws that keep the switch in place and then carefully pull it out. Depending on the model you may have to cut off any cables that connect to it. If you have a manual for your vehicle it will explain exactly how to do this.If the ignition switch isn’t functioning, it’s best to have it replaced by an expert. The replacement process involves disabling the steering column, which could result in unintentional deployment of airbags if done improperly. This is why it’s often best to have the locksmith in your area handle this for you.2. Check the WiringYour car might not start if you cannot turn the key or if it will not start. This could be due to any variety of components in the ignition system. It’s important to understand how the ignition system works to identify issues and make the appropriate repairs.The ignition switch is an electrical switch that has multiple poles and is operated by the key. It has four positions, which include “off”, “accessory”, “run” and the “lock”. If the switch is locked (which is usually marked by an red light), the ignition circuit is in operation and it is not possible to start your car.You can use a voltmeter quickly test the ignition switch or ignition coil. When the ignition switch is set to run, the voltmeter should show around 12.6, If the voltage drops below that level, it’s a sign there’s an open circuit within the system. This could be the battery, solenoid or the ignition coil.Connect the electrical connector to the ignition switch to ensure no other components interfere with your test. Then, set the voltmeter to the continuity or resistance mode and put one lead on one of the ignition switch’s terminals. The other lead should go to the positive terminal on the battery. If the voltmeter shows “open” or fails to register any voltage, you must replace the switch.If you’re replacing the switch, make sure to use a new ignition cylinder and a good quality key cut to ensure that your car will start and run correctly. When replacing the switch, be sure not to touch the pins of the ignition cylinder using your tools. Otherwise, they will become stuck and the engine won’t be able to run. In some vehicles, you’ll have to remove the steering column and the gear selector in order to access the ignition cylinder. This can be a challenge, and it is not recommended until you have a vehicle’s owner’s guideline that states it’s safe. If you do not you could cause serious damage to your steering column and shift mechanism.3. Check the CylinderIf you’ve gone through the battery, wiring and ignition switch and still can’t get your car to start, it may be time to examine the cylinder. It’s the component that holds your key, and is mechanically connected to the steering wheel lock to ensure that thieves can’t steer the car without the key.You may notice that your key will not rotate if the cylinder is worn out. Sometimes, the pins inside the cylinder become stuck as they adapt to the shape of your key, which may cause your car to not start. Alternatively, the cylinder may be loose and a tap using a small tack hammer can aid in releasing it. Be careful not to mix with the springs and ensure that the key is properly inserted.Another sign that your cylinder is going bad is when you have to turn the key and test it in various positions before it begins. This is a red flag and should be addressed immediately, since it will only get worse over time.To test the cylinder, you will need to remove the steering wheel cover and disconnect the battery. The old ignition switch should be simple to take off, as will the cylinder for ignition made of metal. If you don’t have an additional ignition switch around, it’s possible that you can take your original ignition switch and cylinder to a locksmith to reuse them as long as they’re in good condition. After replacing the switch and cylinder, ensure that you reconnect the wiring harness and secure it and reattach any covers or panels you’ve removed.4. Check the Spark PlugsThe spark plug is your ignition system’s final link. The engine will not start if the spark plug breaks. This can take the form of your car not running at all, or may start but not run well. In any case, the root is likely to be one of several factors that block or hinder electricity from jumping across the spark plug gap, which allows your engine’s gas and fuel mixture.Before you begin working on your spark plugs, make sure you’re working on a safe surface, using gloves and tools that are protected to keep from being struck. Spark plugs can be extremely hot and could cause serious injuries if they are touched by hands without gloves.You might notice a light brown or gray residue on the edge of the electrode when the spark plug is damaged. It could also have a black layer on the side of the electrode. These deposits or a build-up of fouling could hinder high-voltage electrical currents from jumping across the gap of your spark plug, igniting an engine.If you think that your spark plugs are at fault, you can test them by removing them from their tube inside the ignition coil. This can be done by disconnecting the coil and the plug wire. After that, you’ll have to follow the proper procedure for your vehicle in order to remove the components that surround the plugs. Once you have removed the plugs you can place them on a surface that is grounded and crank the engine. If they are good, you should see a strong blue spark crossing the gap in the middle of the central electrode.If you don’t see a spark, you’ve identified the problem. Next, you’ll need to go backwards through the chain of ignition and test each component until the spark plugs aren’t working. All systems wear out and eventually break This is especially applicable to ignition systems. That said, routine maintenance can help slow the process down and prevent a major headache at the worst time.