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What Happens When Your Car Ignition Switch Fails? A car ignition switch is responsible for powering your car's engine, as well as a variety of other systems. It's also a frequent cause of headaches, like keys that are difficult to turn or dashboard lights that flicker. The ignition switch functions with a tumbler. It is used to translate your key's movements into positions that trigger different functions. This article explains the basics of ignition switches, the best way to troubleshoot them and what to do if they fail. The Ignition Position The ignition switch is among the most important car parts but it is often overlooked. This small part allows you to turn on your engine, and supplies power to other systems in your vehicle, including the radio, lights and more. This is why it's so important to keep your ignition switch in good condition, and why you should be aware of what happens if it fails. There are a myriad of types of ignition switches that are available in the present. They all perform slightly differently based on their design. For instance, traditional key operated switches use an elongated tumbler that has specially designed keys to turn on electrical systems and start the engine. This type of ignition can be mounted either away from the lock cylinder, and controlled by a mechanical linkage or connected to it. Modern ignition switches carry high currents using electronic modules instead of tumblers and key. There are a few common issues with ignition switches, no matter the type you have. These issues are typically caused by wear and tear, or external factors. For instance, a heavy keychain can strain the ignition switch every time it's removed and inserted, accelerating wear on its internals. Additionally, extreme temperature fluctuations can affect the lubricants and materials in the ignition switch, causing degradation over time. It's time to consult an expert if you are experiencing any of these issues. Ignition switch malfunction is a serious issue that can cause serious damage for your vehicle, so you need to address any issues as soon as you notice they are present. You can also take preventative measures to lessen the chance that you will have to face this issue in the future. The Start Position An ignition switch for cars is a simple piece of machinery that can make an enormous difference in the manner in which your car operates. It turns on the engine and other systems with just a turn of the switch or pushing a switch. It is an essential component of your vehicle that enables you to drive quickly and safely. Like every other piece of machinery, it can experience problems periodically. These issues could not just stop you from starting your car but can also cause damage to other components. You can prevent these problems by performing regular car maintenance, and recognizing early warning signs of ignition switch problems. Most ignition switches have four positions: lock (lock), access (acc) start (start) and accessory. The lock position stops you from removing the key and it is not possible to use accessories or crank your engine if the switch is in this position. The accessory mode or acc position supplies power to accessories such as the radio when the engine is off. This mode will drain your battery, so you should make sure to use it only sparingly. The starting position is the one that drives everything that runs your engine. This includes the sensors, coils and gauges on your dash. This position also causes the spark plugs in your engine to fire and create combustion, which helps get your car moving. If G28CarKeys having trouble with this position, it could indicate a problem with your ignition switch. You can test the function of your ignition switch using a multimeter to test continuity. You can also test the switch by turning the steering wheel left or right while holding the ignition key. If you notice that the gears are difficult to turn or the ignition switch leaks it is recommended to contact your local locksmith. A bad ignition switch could make your car difficult to drive by making it difficult to turn the steering wheel. This is a sign that there's a mechanical fault in the ignition switch that needs to be fixed, so it's best to take your car to an expert when you spot any issues. The Stop Position All circuits that receive electricity from the ignition switch will be cut off when the ignition switch is in the “off” position. This includes additional systems such as your radio as well as the dash lights and even your power seats. The power is also cut to the mechanical lock in the steering wheel, which means you aren't able to move the wheel while the vehicle is parked. If you attempt to turn the engine while the key is in the “parked” position, the anti-theft system will kick in and the car will stop. Typically, the key is kept in this position while you are driving. This is so that you can control the auxiliary systems as well as convenience features while avoiding the engine. The ignition switch might require you to press it a bit before it moves into this position, depending on the model and make of your vehicle. This is to ensure it recognizes the correct key and doesn't let a random key start the engine. If the ignition switch in your car is showing signs of wear and tear, you could experience a variety of symptoms. The most common are the engine refusing to start, a difficult time turning the key, or accessories or auxiliary functions that are suddenly failing to function. The ignition switch is a complicated component that requires a professional replacement by a skilled auto mechanic. To replace your ignition switch, first unplug the negative terminal of your battery. After that, remove any plastic covers or pieces that obscure the ignition the cylinder from view. Once you've accessed the cylinder, loosen the bolt on the negative terminal and then slide it off the cable. Consult the owner's manual to find out where the battery is located and how to disconnect it safely. The position of the accessory The ignition switch is among the most important parts in your vehicle. It's small, but it's crucial to the operation of your vehicle. It's also a frequent point of failure, so you should know what happens when your ignition switch malfunctions and how to determine the cause and repair it. Many people don't think about the ignition switch until it doesn't perform as it should. The switch is crucial for the operation of nearly all components of your vehicle and can help prevent many issues. The switch is activated by the small cylinder after the key is inserted. Modern ignition switches are electronic modules, not mechanical gears. They do the same job – they are able to activate almost every part of your vehicle's systems. In extreme cases an ignition switch that is not working properly can cause the engine to overheat, and possibly catch fire. The accessory position, referred to as ACC in the manual of your car permits you to turn on accessories like headlights, radios, and other electrical devices. These devices do not use the heavy current needed to start the engine because they draw energy directly from your battery. This is the perfect place to listen to music or other devices while you're driving, but make sure you don't keep it on for too long. If your car's ignition key isn't turning in the cylinder, or you are unable to start it at all the ignition switch probably malfunctioning. It may also be difficult to determine if the problem is due to the switch or if it's the key itself that's causing problems. Look at the key for signs of wear and tear, such as dents or scratches and then check to see whether it's plugged into the ignition cylinder. You can also check the wires inside the ignition switch. There's generally a red, brown and pink wire however, only the red wire is usually hot when the key is in the accessory position. If the wire doesn't have power, it might be the ignition switch is broken. Get help from a professional if that is the case.