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How to Fix a Mercedes Ignition Key That Won't Work One of the most annoying issues to face when you own a Mercedes is an ignition key that does not work. It could also be an indication of other issues. There are three main causes for Mercedes Benz ignition keys problems. These include a bent key or cable that is not in good condition, and an electronic switch that is not working properly. Loose Cable The loose cables could cause your mercedes ignition key to become stuck in its place. This issue can be resolved with a simple tightening of the cable connected to the shifter. Make sure the nut on the end of the cable that connects to the shifter is tightened tightly so that the wire isn't sagging. This is especially important for those who drive their Mercedes with the gear in park, since this causes the shifter to move the cable one-sixteenth inch or so, which may cause your key to become caught. The loose cable could cause the steering wheel lock to get stuck. This is a critical security feature of your Mercedes. It will stop potential thieves from driving the car away or using the steering wheel to drive without having a key. The ignition switch on a Mercedes can also become worn and need to be replaced. It's an easy fix, but you should make sure that the new switch matches the current one. A malfunctioning switch can cause your vehicle to stall with all lights going out and the radio stop working when your key is pressed. It is recommended to bring your Mercedes in to have this repaired or purchase a new OEM Mercedes ignition switch. Certain ignition keys of Mercedes can also become locked in place even when the vehicle is in park. This is a typical issue in older Mercedes models, and is usually caused by a loose cable that connects the locking mechanism of your ignition assembly to the shifter. Jump start can be used to verify if the key is still in its place. This is a good way to test the battery and it's a simple and affordable solution. There are a variety of other reasons that your ignition key for mercedes could not turn but the most common is a dead battery. This issue is prevalent for all makes and models of cars. You should consult an auto mechanic to find the root reason. Electronic Switch The ignition switch is a crucial electronic part of a car. As the key is turned, it activates different systems. The first one activates electrical components, the second will power the ignition and fuel systems, and the final cranks the engine. Each ignition key from mercedes is unique. When you insert the key into the ignition of your vehicle the electronic switch confirms the authenticity of the key. If it's valid the key sends signals to the steering lock (if your car has one) as well as other computer modules to unlock the door. This is a great way for you to start your car swiftly and easily. Even if you misplace the keys, you'll be able be able to enter and exit your car with no difficulty. But, despite the fact that we love the convenience of our ignition switches they can create serious issues for the road. If your ignition switch is defective it might not be able to provide enough power to your vehicle's critical electrical components or may be missing vital connections that could stop you from starting your car. One of the most common indications of a damaged ignition switch is that it doesn't start your car in any way. This is often due to the fact that the switch doesn't change to the “on” position, which turns on fuel or ignition systems. A faulty ignition switch can cause the key to not move into the first position. This is where you can check for warning lights on your dashboard. Usually, these lights light up when you hit the ignition button. They then dim once your car is running. In other situations the dashboard lights stay dark after you move your key to the 'on' position. This is because the ignition switch temporarily supplies power to the ignition, fuel pump systems, and other systems when the key is switched to 'on'. However it will cut off power after the key is removed. You should contact an auto mechanic if you have any of these issues. A specialist can tell you if the switch is defective and what steps you should do to fix it. Locking the Steering Wheel Mercedes ignition keys are made with an anti-theft feature in mind. If someone steals your car and manages to move the steering wheel while you're not around it will activate the lock on the steering wheel and keep the vehicle from moving. This security measure is designed to protect your family and you from being hurt during a robbery. It also prevents thieves from stealing your car. Sometimes, however, the lock might not be able to unlock or remain locked in an unlocked position. This could be due to a variety of reasons, such as worn or damaged ignition tumblers. You can either get an alternate key or repair it yourself. To fix this issue, you'll have to remove the ignition lock assembly. To accomplish this, you'll need to remove the cover made of plastic on the top of the ignition and then pull out the fasteners that hold it in place. Once you have removed the ignition lock assembly, you can replace it with a fresh one. It is essential to make sure the new part is the exact equivalent of the components of your car. This will help ensure that the locking mechanism works perfectly when you install it. It is also important to ensure that the new ignition lock is installed properly and that all clips are engaged correctly. This is especially crucial for older models. Wear and tear on the tumblers might cause your Mercedes ignition keys to be stuck in their locked position. This is not a rare problem that needs to be rectified prior to the cylinder becoming completely stuck or snapped off. To unlock a mercedes ignition lock that is locked in its locked position, apply some pressure to the key while simultaneously turning the key. To avoid damaging the lock mechanism or the key it is best to do this slowly and gently. This is a simple and simple way to fix your issue. This is a great method to ensure your Mercedes ignition is ready and secure, so you can use it at any time. If you need additional help you can contact Mercedes-Benz of Centerville near Kettering for more details or to schedule an appointment. Tumbler When keys are inserted into the ignition of your Mercedes, it sends detailed infrared information to the electronic ignition switch, which will start the engine. As the infrared data matches what's stored in the ECU the Mercedes will begin to turn. This will start the engine of the Mercedes and power all of its systems. If your car won't turn on, it might be an opportunity to look at the ignition lock tumbler. In some cases the tumbler may wear out over time and requires replacement. Sometimes, it will not be able to turn on the electronic ignition switch. merc key of the most obvious indications that the Mercedes ignition lock tumbler is faulty is that it isn't turning into the proper position. This can be a frustrating issue as you might need to fight the lock for a long time before the car can turn. A malfunctioning ignition lock's tumbler can also cause the key to block or become completely blocked once it is in the lock. If this happens it's essential to bring your vehicle to a local Mercedes specialist so that they can examine and repair the ignition tumbler of the lock. Other possibilities for an Mercedes Benz ignition lock tumbler that isn't turning include a bent key or a damaged key. If the bent part of your key is causing it to not turn and is causing it to not turn, you can flatten it using a hammer in order to make it straight. Use a soft-headed, gentle hammer and tap the key carefully. You can sometimes untangle your key from the ignition lock by gently jiggling it. However, this is difficult and you must be cautious not to damage your key while attempting to unravel it. If you've broken or missing Mercedes ignition lock tumbler, you can get an original keyed replacement from your local Mercedes-Benz dealer. These parts are made specifically to fit the original locks of your vehicle, so you can rest sure that they'll be able to be compatible with the system in your Mercedes.