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What Happens When Your Car Ignition Switch Fails? The ignition switch in your vehicle is responsible for a number of systems, including the engine. It can also cause frustration, such as a key that is difficult to turn or dashboard lights which flicker. The ignition switch operates by translating key movements into positions that trigger different functions. This article covers the basics of ignition switches and how to troubleshoot and fix them. G28 Car Keys is among the most vital car components, and it is often ignored. This small part is what allows you to turn off your engine and supply power to all of the other systems in your car, which includes things like the radio lights, the radio, and many more. This is why it's so important to maintain your ignition switch, and what happens if it malfunctions. There are many different types of ignition switches that are available today. They all perform slightly differently depending on their design. For example, traditional key operated switches utilize a tumbler with specially shaped keys to activate electrical systems and then start the engine. This type of ignition is mounted either away from the lock cylinder and operated with a mechanical linkage, or connected to it. Modern ignition switches are powered by a high currents using electronic modules instead of traditional tumblers and keys. There are some common problems with ignition switches, no matter which type you're using. These issues are typically caused by wear and tear, or external factors. A heavy keychain, for instance could put stress on the ignition switch every time it is removed and inserted. This causes wear on its internals. Extreme temperature changes can also affect the lubricants and materials used in the ignition switch. This causes degrading over time. It's time to call in an expert if you are experiencing any of these problems. The failure of the ignition can have serious consequences for your car, so you should deal with any issues that you observe as soon as possible. You can also take preventative measures to decrease the chance that you'll have to address this issue in the future. The Start Position A car ignition switch is a simple piece of machinery that makes an enormous difference in way your car runs. It can turn on the engine and a variety of other systems with just a press of a key or pressing a switch. It is a crucial part of your vehicle that enables you to drive swiftly and safely. Like every other piece of machinery it will encounter issues at times. These problems can not just stop your car from starting, but also cause damage to other parts. You can prevent these issues by conducting regular maintenance on your car, and recognizing early warning signs of ignition switch issues. The majority of ignition switches are constructed with four positions: lock, start, acc and accessory. The lock position blocks the removal of the key, and you are unable to use accessories or crank your engine when the switch is in that position. The acc position, or accessory mode, supplies the power to devices like the radio while the engine is not running. This mode can drain your battery, so make sure to use it only sparingly. The starting position is where your engine starts. This includes the gauges, sensors, and coils that are in your dashboard. This causes the spark plugs of your engine and ignites combustion and move you. If you're experiencing issues with this position, it could be a sign of a problem with your ignition switch. Multimeters can be used to test the functionality of your ignition switch. You can also test the switch by turning the steering wheel left or right while keeping the ignition key. If you notice the gears are difficult to turn or the ignition switch leaks then you must contact your local locksmith. A defective ignition switch could also cause problems when driving your vehicle as it becomes difficult to turn the steering wheel. This is a sign of a mechanical fault with the ignition switch that must be fixed, and it's best to take your car to an expert as soon as you notice any issues. The Stop Position Every circuit that receives electricity from the ignition switch will be cut off when the ignition switch is in the “off” position. This includes all auxiliary systems such as your radio, dash light and even your power seats. It also cuts off electrical power to the mechanical lock inside the steering wheel so you can't turn the wheel when the car is parked. If you try turning the engine on while the key is in the “parked” position the anti-theft system will be activated and the car may immediately stall. Typically, the key is kept in this position when you are driving. This is because it allows you to control your auxiliary and convenience systems while keeping the engine off and away from reach. The ignition switch could require you to press a bit before it is in this position, depending on the model and make of your vehicle. This is to ensure that it is able to recognize 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 be experiencing a variety of signs. The most common are the engine refusing to start or turn the key, and other accessories or auxiliary functions that are suddenly failing to function. The ignition switch is a complex component and requires a skilled auto mechanic to replace it. To replace your ignition switch, first unplug the negative terminal of your battery. Remove any plastic pieces or covers that protect the ignition cylinder. Once you've gained access, loosen the nuts on the negative terminal and then slide it off the cable. Check the owner's guide for guidance on where the battery is and how to safely disconnect it. The Accessory Position The ignition switch is among the most vital parts in your vehicle. It's tiny, but it's crucial to the operation of your vehicle. It's a common failure point, so it's important to know what happens when your ignition switch fails. You should also be able to determine the problem and repair it. The ignition switch is often overlooked until it stops working properly. The switch is crucial for the operation of nearly all components of your vehicle and can prevent many problems. The switch activates the small cylinder when the key is inserted. Modern ignition switches utilize electronic modules instead of mechanical gears, but they do the same thing, activating almost all of the systems in your car. In extreme situations an ineffective ignition switch could cause the engine to overheat and eventually catch fire. In the manual of your car, you will discover the accessory position (ACC) which permits you to turn on electrical devices, such as your radio, headlights and other accessories. They don't require the heavy current needed to start your engine because they draw power directly from the battery. It's an excellent place to listen to music or use other devices while driving. But don't let it running for too long. The ignition switch might be malfunctioning if the car key is difficult to turn or if it will not turn at all. It can also be difficult to determine if the problem is related to the switch or if it's the key itself that's causing problems. Examine the key for signs of wear and tear, such as scratches or dents, and check to see if it's stuck in the ignition cylinder. You can also check the wiring inside the ignition switch. There are usually a red, brown and pink wire however, only the red wire is typically hot when the switch is in the accessory position. If the wire doesn't have power, it could be an ignition switch is broken. If this is the situation you should consult an expert.