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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 could also cause frustration, like keys that are difficult to turn or dashboard lights that flicker. The ignition switch works through a tumbler that translate your key's movements into different positions that trigger functions. This article will cover the fundamentals of ignition switches, how to troubleshoot them and what to do if they fail. The Ignition Position It might be one of the least-known car parts on the road today, but the ignition switch is absolutely essential to the operation of your car. This tiny component lets you turn on your engine, and also provides energy to other systems within your vehicle, including the radio, lights and more. This is why it is essential to maintain your ignition switch and what happens if it malfunctions. There are a variety of ignition switches on the market in the present. They all perform slightly different based on the design. Traditional key operated switches, like one, utilize a tumbler as well as specially shaped keys to start the engine and activate electrical systems. This type of ignition switch may be connected to the lock cylinder, or mounted away from it and operated using mechanical linkage. Modern ignition switches utilize electronic modules to transmit heavy current instead of traditional tumblers and keys. No matter what type of ignition switch you are using in your vehicle however, there are a few common issues that can arise. Most often, these issues are caused by wear and tear or external forces. A heavy keychain, for instance could put stress on the ignition switch every time it is inserted and then removed. This can cause wear to the internals of the switch. Also, extreme temperature changes can impact the lubricants and materials in the ignition switch, causing degradation over time. If you notice these kinds of issues, it's probably the right time to call a professional for help. Ignition failure can have grave consequences for your vehicle So you should take care to take care of any issues you spot promptly. You can also take preventative steps to reduce the likelihood of having to face this issue in the future. The Start Position The ignition switch in your car is a basic device that can make a huge difference to the way it operates. It activates the engine and a variety of other systems with a simple turn of the key or pressing a switch. It's a vital part of your vehicle, allowing you to go on the road swiftly and safely. But, just like every other piece of machinery, it can experience problems from time to time. These issues may hinder you from starting your car, but can also cause damage to other components. Fortunately you can avoid these issues with regular maintenance and by identifying the early warning signs of ignition switch problems. Most ignition switches are designed with four positions: lock, start, acc, and accessory. The lock position stops the key from being removed, and it's not possible to use accessories or crank the engine when the switch is in this position. The accessory mode or acc position provides power to other accessories, such as the radio when the engine is off. This mode can drain your battery, so you should be careful when using it. G28CarKeys starting position is where your engine operates. This includes the gauges, sensors and coils that are in your dashboard. This also causes the spark plugs in your engine to ignite and produce combustion, which gets your car moving. If you have trouble in this position your ignition switch might be malfunctioning. You can test the function of your ignition switch using a multimeter for checking continuity. You can also see if the switch is working properly by holding your ignition key and turning the steering wheel left or right. If you notice that the gears appear difficult to turn or the ignition switch is leaky, you must contact your locksmith in your area for assistance. A defective ignition switch can cause your car to be difficult to drive, making it difficult to turn the steering wheel. This is a sign of a mechanical fault with the ignition switch that has to be repaired, so it is recommended to take your car into an expert immediately if you notice any issues. The Stop Position All circuits that receive power from the ignition switch will be shut off when the switch is in the “off” position. This includes auxiliary systems such as your radio, dash light, and a few of your power seat. The power is also cut off to the mechanical lock on the steering wheel, which means you aren't able to move the wheel while the car is stationary. If you try to turn the engine on while the key is in the “parked” position, the anti-theft system will be activated and the car could stop. This is the standard location for the key when driving. This is so that you can control your auxiliary systems and convenience features while avoiding the engine. The ignition switch could 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 allow a random key to start the engine. You may experience different symptoms if your ignition switch is faulty. Common ones include the engine refusing to start, a difficult time turning the key, and other accessories or auxiliary functions that are suddenly failing to function. The ignition switch is a specialized component that requires professional replacement by an experienced auto mechanic. To replace your ignition switch, first unplug the negative terminal from the battery. Remove any plastic pieces or covers that cover the ignition cylinder. Once you've accessed the cylinder, loosen the nut on the negative terminal and then remove it from the cable. Consult your owner's guide for details on how to safely disconnect the battery and where it's situated. The position of the accessory The ignition switch may 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 and it's crucial to understand what happens if your ignition switch fails. You should also be able to diagnose the problem and repair it. Most people don't think about the ignition switch until it fails to perform as it should. The switch is responsible for enabling the majority of the components in your vehicle to function and stop many problems from occurring. The switch is activated by the small cylinder when the key is put in. Modern ignition switches use electronic modules instead of mechanical gears however, they do the same thing, activating almost all of your vehicle's systems. In extreme cases, a defective ignition switch could cause your engine to overheat, and possibly catch fire. In the manual of your car, you'll find the accessory position (ACC) which allows you to turn on electrical devices such as your headlights, radios, and other accessories. These devices don't require the massive current required to start the engine since they draw energy directly from your battery. This is the ideal place to listen to music or other devices while you're driving, but make sure you don't leave it on for too long. If your car's key isn't turning in the cylinder, or you can't start it at any time the ignition switch likely to be malfunctioning. It's difficult to tell if the problem is the switch or the key. Check the key for indications of wear and tear like scratches or dents and then check to see whether it's stuck inside the ignition cylinder. You can also examine the wiring inside the ignition switch. When the key is in accessory position, there is usually three wires: pink, brown and red wire. However only the red wire is usually hot. If the wire isn't powered, the ignition switch may be broken. If this is the situation seek out an expert.