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How to Fix a Mercedes Ignition Key That Won't Work An ignition key that doesn't work is one of the most frustrating things you have to deal with when driving a Mercedes. It can be an indicator of other issues, too. There are three main causes for Mercedes Benz ignition key problems. They are a bent key, a loose cable, and an electronic switch that is not working properly. Loose Cable Untight cables could cause your mercedes ignition key to be stuck. This issue can be resolved by simply tightening your cable at the shifter. The nut that connects the shifter to the end of this cable should be tightly tightened so that there isn't any slack in the wire. This is particularly crucial for those who drive their Mercedes with the gears in park, since this causes the shifter to move the cable by a sixteenth of an inch or so, which may cause your key to get stuck. The loose cable could cause the lock on your steering wheel to become stuck. This is an essential security feature of your mercedes as it blocks potential thieves from pushing the vehicle away or using the steering wheel to navigate the vehicle without the key. A mercedes ignition switch can also wear out and need to 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 damaged switch could cause your vehicle to stall with all lights going out, and the radio not working when the key is pressed. You can bring your Mercedes in for repair or purchase a new OEM Mercedes ignition button. Some Mercedes ignition keys can be stuck in place even when the car's in park. This is a frequent issue with older Mercedes models. It's usually caused by a loose connection between the locking mechanism in your ignition assembly to your shifter. If you have a key that's locked in place, you should attempt a jump start and try to resolve the issue. This is a quick and easy way to test the battery. There are many reasons your Mercedes ignition keys might not be turning. The most common reason is an unbalanced or dead battery. This issue is prevalent for all models and makes of cars. You should consult an automotive mechanic to identify the root cause. Electronic Switch The ignition switch is an essential electronic component of a vehicle. When the key is turned, it triggers various systems. The first position is where you can activate electrical devices, the second position turns on activates the ignition and fuel systems, and the third cranks the engine. The ignition key for the Mercedes is unique to each car and, when you insert it into your vehicle's ignition system the electronic switch examines the key to ensure it's genuine. If the key is valid, it will send an alert to your car's steering lock and other computer modules to unlock your door. This is a fantastic way to start your car quickly and easily. Even if you misplace your keys , you'll still be able to get in and exit your car without any difficulties. However, as much as we love the convenience of our ignition switches, they can cause problems on the road. If the ignition switch is defective, it may not be supplying enough power to your vehicle's vital electrical components, or it could have missing connections that could keep your vehicle from starting. One of the most common symptoms of a faulty ignition switch is that it can't start your car in any way. This is usually due to the switch doesn't move to the 'on' position — which powers on fuel and ignition systems. Another indication of a damaged ignition switch is that the key will not go into the initial position, where you could look for warning lights on the dashboard. These lights typically turn on when you press the ignition button. They then dim once your car is started. In some instances, the dashboard lights will remain dark even after you turn the key to turn it on. This is due to the fact that the ignition switch will temporarily provide power to the fuel pump, ignition systems, and ignition if the key has been turned to “on”. However the switch will then shut off power once the key is removed. If you experience any of these issues, the best choice is to seek the advice of an auto mechanic. A professional can tell you that the switch is not working properly and the steps to take to fix it. Steering wheel lock Mercedes ignition keys have been designed with an anti-theft feature in mind. If someone tries to break into your car and manages to move the steering wheel even though you're not around it will activate the lock on the steering wheel to prevent the vehicle from moving. This security measure protects your family and you from being the victim of an act of crime. It also prevents thieves from driving off with your car. Sometimes, however, the lock won't unlock or is locked. This can be due to several reasons, including worn or broken ignition tumblers. You can either purchase a replacement key or fix it yourself. To fix this, you'll need to take off the ignition lock assembly. To accomplish this, you'll have to take off the plastic cover on top of the ignition and then pull out the fasteners that secure it. After you've removed the ignition lock assembly, you can replace it with another one. It is crucial that the new piece matches the car's components. This will help ensure that the locking mechanism functions perfectly when you install it. Also, make sure that the new ignition lock has been installed correctly and that all clips are properly engaged. This is particularly crucial for older models. Wear and tear on the tumblers can also cause your mercedes ignition keys to become stuck in their locked position. This is a common problem which needs to be taken care of before the cylinder is stuck or snaps off. To unlock an ignition lock from a Mercedes that is locked in its locked position, apply a little pressure to the key while simultaneously turning the key. It is recommended to do this slowly and gently, so as not to damage the lock mechanism or the key. This is a quick and easy way to solve your problem. This is a great way to ensure that your Mercedes ignition is working and secure, so you can drive it at any time you want. If you need additional help you can contact Mercedes-Benz of Centerville near Kettering for further details or to schedule an appointment. Tumbler When you insert keys into the ignition of your Mercedes it sends detailed information to the electronic ignition switch that will start the engine. If the infrared information matches with the data stored in the ECU the Mercedes will begin to turn. This will start the engine of the Mercedes and power all its systems. If mercedes car keys isn't starting It could be time to inspect the ignition lock tumbler. Sometimes, the tumbler can wear out and will need to be replaced. Sometimes, the tumbler may not be able to engage the electronic ignition button. One of the most obvious signs that your Mercedes ignition lock tumbler may be defective is that it will not turn into the proper position. This can be frustrating since you might have to battle the lock for a long time before the car can turn. A malfunctioning ignition lock tumbler could also cause the key to become jammed or even become completely blocked when it is put into the lock. It's essential that you take your vehicle to your Mercedes specialist in the event of this. They can then examine and fix the ignition switch tumbler. Other possibilities for a Mercedes Benz ignition lock tumbler that won't turn include a bent key or a damaged key. If your key is bent at the end, it's important to smooth the edge with an hammer, and then try to turn it. Use an incredibly soft hammer and tap it carefully. You can sometimes untangle your key from the ignition lock cylinder by gently jiggling it. But, this can be difficult and you should be careful not to break your key when trying to unravel it. If you have a broken or missing Mercedes ignition lock tumbler, you can order an original keyed replacement from your local Mercedes-Benz dealer. These parts are made to fit your Mercedes original locks, and will work with your Mercedes' system.