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What Happens When Your Car Ignition Switch Fails? The ignition switch in your car is responsible for powering your car's engine, among other systems. It's also a common source of frustration, such as the difficulty of turning the key or the dashboard lights that flicker. The ignition switch operates by translating key 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 should they fail. The Ignition Position The ignition switch is among the most important car parts that is often ignored. This tiny component allows you to turn the engine on and provide power to all of the other systems inside your car, which includes things like the radio lights, the radio, and many more. This is why it's vital to keep the ignition switch and what happens if it fails. There are many different types of ignition switches on the market in the present. They perform differently based on their design. Key operated switches, like they use a tumbler and specially shaped keys to start the engine and also activate electrical systems. This type of ignition can be positioned in a different location from the lock cylinder and controlled by a mechanical linkage or linked to it. Modern ignition switches carry high currents using electronic modules instead of tumblers and key. There are some common problems with ignition switches, regardless of the type you have. Most often these issues are caused by wear and tear or external influences. A heavy keychain, as an example could put stress on the ignition switch every time it is inserted and removed. This causes wear to the internals of the switch. Extreme temperature changes can also impact the materials and lubricants used in the ignition switch. This causes degradation over time. It's time to consult an expert if you are experiencing any of these issues. The ignition switch is a serious problem that can cause serious damage for your vehicle, so you should address any issues immediately you notice them. You can also take preventative steps to lessen the chance that you'll have to face this issue in the near future. The Start Position The ignition switch in your car is a basic device that could change the way it operates. With a single flick of a switch or a push of the button, it will start your engine, as well as a myriad of other systems. It's a vital part of your vehicle that allows you to get on the road swiftly and safely. Like every other piece of machinery, it can experience problems from time to time. These issues could not just stop you from starting your car, but could also cause damage to other parts. Fortunately you can prevent these issues by performing regular maintenance and by identifying early warning indicators of ignition switch issues. The majority of ignition switches are constructed with four positions: lock acc, start and accessory. The lock position stops you from removing the key, and you are unable to use accessories or crank your engine while the switch is in that position. The accessory mode or acc position provides power to accessories such as radios when the engine is off. However, this option can drain the battery, which is why it is important to use the acc position sparingly. The starting position is the one that drives everything that makes your engine run. This includes the coils, sensors and gauges in your dashboard. This also causes the spark plugs in your engine to start firing and generate combustion, which is what gets your car moving. If you are having trouble in this position the ignition switch could be malfunctioning. You can test the functionality of your ignition switch by using a multimeter to check continuity. You can also test the switch by turning the steering wheel left or right while keeping the ignition key. If you find that the gears are hard to turn, or the ignition switch appears to be leaking, you should call your local locksmith for assistance. A defective ignition switch can also make your car hard to drive as it becomes difficult to turn the steering wheel. This is a sign that the ignition switch requires to be replaced. The Stop Position All circuits that receive power from the ignition switch will be shut off when the ignition switch is in the “off” position. This includes additional systems such as your radio, dash lights, and even your power seats. It also cuts off power to the mechanical lock inside the steering wheel, so that you aren't able to turn the wheel if the car is parked. If you try to start the engine when the key is in this position, it may be stopped immediately as that's when the anti-theft system kicks in. Typically the key is held in this position when you drive. This is to manage your auxiliary systems and convenience features while avoiding the engine. The ignition switch might require you to press a little before it is in this position, based on the model and make of your vehicle. This is to ensure it recognizes the right key and doesn't allow a random key to start the engine. If the ignition switch in your car is showing signs of wear and tear, you could experience a variety of symptoms. car ignition switch repair include the engine not starting, a difficult time turning the key, and other accessories or other functions that suddenly cease to function. The ignition switch is an extremely complicated component that requires a skilled auto mechanic to replace it. To replace the ignition switch, you'll have to disconnect the negative terminal on your battery. Remove any plastic pieces or covers that cover the ignition cylinder. Once you've gained access to the cylinder, loosen and slide the cable away from the negative terminal. Check the owner's guide for guidance on where the battery is located and how to safely disconnect it. The Accessory Position The ignition switch could be one of the smallest components in your vehicle but it's a crucial part of the function of the vehicle. It's a frequent point of failure therefore it's essential to understand what happens if your ignition switch fails. You must also be able to identify the issue and fix it. The ignition switch is often overlooked until it stops working properly. The switch is crucial for the operation of almost all parts of your vehicle, and can prevent many problems. The switch is activated by the small cylinder once the key is inserted. Modern ignition switches use electronic modules instead of mechanical gears however, they do the same thing – activating nearly all of your vehicle's systems. In extreme cases a defective switch could cause your engine to overheat or set fire to the vehicle. The accessory position, also known as ACC in your car's manual, allows you to turn on certain accessories such as your headlights, radio and other electrical devices. They don't require the huge currents that is required to start your engine because they pull power directly from the battery. It's a great spot to listen music or use your other devices while driving. But don't leave it running for too long. If your car's ignition key isn't turning in the cylinder, or you are unable to start it at any time, the ignition switch is likely to be malfunctioning. It's difficult to determine if the problem is the switch or the key. Check the key for signs of scratches and dents. Also, check if the key is stuck in the ignition. You can also look at the wiring 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 is not generating power, it could be the ignition switch that's broken. Consult a professional if this is the case.