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How to Fix a Mercedes Ignition Key That Won't Work One of the most stressful issues to face when you own a Mercedes is an ignition key that won't work. It could be a sign of other issues. There are three main causes of Mercedes Benz ignition key problems. They are a bent key, a loose cable, and an electronic switch that is malfunctioning. Loose Cable Cables that are loose could cause your Mercedes ignition key to get stuck. This issue can be corrected by simply tightening the cable at the shifter. Check that the nut at the end of the cable that connects to the shifter is secured so that the wire doesn't sag. This is especially important in the event that you drive your Mercedes with the gears set to park, as this could cause the shifter to move the cable one-sixteenth inch or so, which could cause your key to become stuck. The loose cable may cause the steering wheel lock to get stuck. This is an important security feature of your Mercedes. It prevents potential thieves pushing the car away, or using the steering wheel for navigation without having a key. Another issue that can occur with an ignition key for a Mercedes is that the electronic switch can become worn down and need to be replaced. This is a simple repair that can be done quickly but it is vital to make sure your new switch is in line with the one you have. A faulty switch could cause your vehicle to stall, all lights to go out and the radio to stop working when your key is pressed. It is recommended that you bring your mercedes in to have this repaired or buy the new OEM Mercedes ignition switch. Certain ignition keys of Mercedes can be locked in place, even when the car is in park. This is a common issue with older Mercedes models. It is typically caused due to a loose cable linking the locking mechanism in your ignition assembly to your shifter. If you have a key that is locked in place, you should try a jump start and try to resolve the problem. This is a great method to test the battery and it's a simple and cost-effective solution. There are several other reasons that your mercedes ignition keys may not work, but the most common is the battery is dead. This issue is common to all makes and models of cars. You should consult an automotive mechanic to diagnose the cause. Electronic Switch The ignition switch is an essential electronic part in a vehicle. It comes in a variety of positions, which provide power to various systems when the key is turned. The first position activates electrical accessories, the second activates the ignition and fuel systems, while the third turns the engine. Each ignition key from mercedes is unique. When you insert the key into your vehicle's ignition the electronic switch will verify that it's genuine. If the key is valid it will send the signal to the steering lock of your car and other computer modules to unlock your door. This is a great method to help you start your car quickly and easily- and even if you have lost your keys, you can still get in and out without difficulty. However, even though we love the convenience of our ignition switches, they can pose serious dangers for the road. If the ignition switch is faulty, it may not be supplying enough power to your vehicle's vital electrical components, or it could be missing crucial connections that prevent your vehicle from starting. A faulty ignition switch can cause your vehicle to not start at all. This is usually due to the fact that the switch doesn’t turn to the ‘on’ position, which activates fuel or ignition systems. A malfunctioning ignition switch could also cause the key to not move into the first position. This is where you can look for warning lights on the dashboard. Usually, these lights come up when you hit the ignition button. They then dim once your car is running. In some cases the dashboard lights remain dark even after turning the key to 'on'. The reason for this is because the ignition switch will briefly provide electricity to the ignition and fuel pump systems if you switch the key to 'on', but then it will stop power once the key is removed from the 'on' position. It is recommended to contact an auto mechanic when you experience any of these problems. A qualified mechanic can tell whether the switch is malfunctioning and what steps to take in order to repair it. Locking the steering wheel Mercedes ignition keys come with an anti-theft feature. If someone tries to steal your car and then moves the steering wheel without being present, the key will activate the steering lock and stop the car from moving. This security measure protects your family and you from being a victim of criminals. It also prevents thieves from taking your car. However, sometimes the lock won't open or may be stuck in a locked position. This can happen for many reasons, including damaged or worn out ignition tumblers. You can either purchase a new key or repair the problem yourself. The first step to fixing this is to remove the ignition lock assembly. To do this, you will need to remove the cover made of plastic on the top of the ignition and then take out the fasteners that secure it. Once you've removed the ignition lock assembly, you'll be able to replace it with a new one. It is essential to ensure that the new part is compatible with the car's components. This will ensure that the locking mechanism works properly when you reinstall it. Also, make sure that the new ignition lock is installed properly and that all clips are in the correct position. This is especially important for older models. Wear and wear and tear on the tumblers may cause your Mercedes ignition keys to become stuck in their locked position. This is a typical issue that should be addressed prior to the cylinder getting stuck or snaps off. To unlock a mercedes ignition lock which is stuck in its locked position, apply some pressure to the key while simultaneously turning the key. To avoid damaging the lock mechanism or key you must take it slow and gentle. This is a fast and simple way to fix your issue. It's also a great option to ensure that your Mercedes ignition is safe and ready to go when you need it. If you need additional help, contact Mercedes-Benz of Centerville near Kettering for further information or to set up an appointment. Tumbler When you insert a key into the ignition of your Mercedes it will send detailed infrared signals to the electronic ignition switch to begin the engine. When the infrared data matches what's stored in the ECU the Mercedes will begin to turn. This starts the car's engine, and also powers the numerous components inside it. If your car isn't getting started, it may be time to look at the ignition lock tumbler. Sometimes, the tumbler will wear out and will need to be replaced. Sometimes, the tumbler will not be able engage the electronic ignition button. mercedes key fob programming that the Mercedes ignition lock tumbler may be defective is when it does not move in the right direction. When this occurs, it can be frustrating because you may be fighting with the lock for a long period of time before you can get the car running. A malfunctioning ignition lock's tumbler can cause the key to jam or become completely blocked when it is put into the lock. It's essential that you take your vehicle to your Mercedes specialist if this happens. They can then look at and fix the ignition switch tumbler. Other possibilities for the Mercedes Benz ignition lock tumbler that isn't turning are the possibility of a bent or worn out key. If your key's bent end causes it to not turn, you can flatten it using a hammer to make it straight. Make sure you use a soft-headed hammer and tap it very carefully. You can sometimes remove your key from the ignition lock cylinder by gently jiggling it. This can be tricky so make sure not to harm your key when trying to untangle it. You can get a replacement keyed Mercedes-Benz ignition lock tumbler in case it is damaged or missing. These parts are designed to fit your Mercedes original locks, and will work with your Mercedes system.