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How to Fix a Mercedes Ignition Key That Won't Work One of the most frustrating things to deal with when you own a Mercedes is the ignition key that doesn't work. It could also be a sign that you have other problems. There are three main reasons Mercedes Benz ignition keys problems. The most common causes are a bent key or cable that is loose, as well as an electronic switch that is malfunctioning. Loose Cable The loose cables can cause your mercedes ignition key to be stuck in place. This is an issue that is easily solved with simply tightening the cable connected to the shifter. Make sure the nut at the end of the cable that connects to the shifter is tightly tucked to ensure that the cable doesn't sag. This is particularly important for those who drive their Mercedes with the gears set to park, because this can cause the shifter to move the cable by one-sixteenth of an inch or so, which may cause the key to become caught. The loose cable could cause your key to be tied to the steering wheel lock. This is a crucial security feature of your Mercedes, as it prevents criminals from attempting to push the car away or using the steering wheel to navigate the vehicle without the key. Another issue that may arise with an ignition key for a Mercedes is that the electronic switch may get worn out and need to be replaced. This is a simple fix that is quick and easy to do, but it is important to ensure that the new switch is compatible with the one you have. A defective switch could lead to a variety of issues, including your car stalling, the lights not working, or the radio not working when you use your key. It's best to bring your Mercedes in for this repair or buy an OEM Mercedes ignition switch. Some mercedes ignition keys can also be locked even when the car is in park. This is a common problem in older Mercedes models, and is usually caused by loose cables that connect the locking mechanism of your ignition assembly to the shifter. If you have a lock that is locked in its place, attempt a jump start and see if this solves the issue. This is a great method to test the battery and it's an easy and inexpensive solution. There are other causes the ignition key of your Mercedes might not turn however the most frequent is an unresponsive battery. This is a frequent issue for a variety of makes and models of cars and you should speak with an mechanic for the root of your problem. Electronic Switch The ignition switch is an essential electronic component in a vehicle. As the key is turned, it activates different systems. The first position is where you can activate electrical devices, the second position turns on activates the ignition and fuel systems, and the final turns the engine. Each ignition key from Mercedes is unique. When you insert the key into your car's ignition the electronic switch will verify that it's valid. If the key is legitimate it will send a signal to your car's steering lock and other computer components to unlock your door. This is a great way to allow you to start your car quickly and easily- and even if you lose your keys, you can still be able to get in and out of the car without any trouble. However, even though we love the convenience of our ignition switches they can cause serious problems for the road. If the ignition switch you use is not working properly, it could not send enough power to the car's critical electrical components or may have a problem with the connections that can prevent you from starting your car. One of the main symptoms of a faulty ignition switch is that it will not start your vehicle at all. This is usually due to the fact that the switch does not change to the “on” position, which is the one that powers on ignition or fuel systems. Another indication of a malfunctioning ignition switch is that the key does not move into the desired position, from which you can look for warning lights on the dashboard. Usually, these lights come up when you press the ignition button and they dim when your car is running. In some cases, the dashboard lights will remain dark even after you turn the key to turn it on. This is because the ignition switch temporarily provides power to the fuel pumpand ignition systems, and ignition if the key has been turned to 'on'. However it will shut off the power when the key is removed. You should consult an auto mechanic if you have any of these problems. An expert can determine if the switch is defective or not, and the steps to take to fix it. Locking the Steering Wheel Mercedes ignition keys have been designed with an anti-theft feature in mind. If someone tries to steal your car and turns the steering wheel without you being present, it will trigger the steering lock and stop the vehicle from moving. This security measure protects you and your family members from being the victim of an act of crime. It also prevents thieves from stealing your car. But, in some cases, the lock won't open or it could be locked. This could be due to a variety of reasons, such as damaged or worn-out ignition tumblers. You can purchase an alternate key or fix it yourself. To fix this, you will need to remove the ignition lock assembly. To do this, you will need to remove the plastic cover on the top of the ignition, and then remove the fasteners which hold it in place. Once you have removed the ignition lock assembly, you can replace it with a brand new one. It is important to ensure that the new component is the exact equivalent of the car's components. This will ensure that the locking mechanism is working properly when it is reinstalled. You should also ensure that the new ignition lock is correctly installed and that all clips are engaged correctly. This is particularly crucial for older models. Wear and wear and tear on the tumblers could cause your Mercedes ignition keys to become stuck in their locked position. This is not an uncommon issue and should be addressed before the cylinder is completely stuck or snaps off. To unlock an ignition lock from a Mercedes that is stuck in its locked position, apply a little pressure to the key while simultaneously turning the key. You should do this slowly and gently, so as not to damage the lock mechanism or the key. This is a fast and easy way to solve your issue. It's also a great way to ensure that your Mercedes ignition is secure and ready to go whenever you require it. If you require additional assistance get in touch with Mercedes-Benz of Centerville near Kettering for further information or to set up an appointment. Tumbler When the key is inserted into the ignition of your Mercedes, it sends detailed infrared data to the electronic ignition switch, which will start the engine. The Mercedes will rotate when the infrared information is in sync with the ECU. This will start the engine of the Mercedes, and also power all its systems. If your car won't turn on It could be an opportunity to look at the ignition lock tumbler. In some cases the tumbler may wear out over time and will require replacement. Other times, it will not be able to engage the electronic ignition switch. One of the main signs that the Mercedes ignition lock tumbler is not working properly is that it isn't turning to the right position. When killer deal occurs, it can be a hassle as you might have to fight with the lock for a long period of time before you can get the car started. Another symptom of an ignition lock tumbler that's not working properly is that it could stop working or even block the key when it's placed into the lock. If this occurs it's crucial to take the vehicle to your local Mercedes specialist to have them examine and repair the ignition lock tumbler. Other possible causes for a Mercedes Benz ignition lock tumbler that isn't turning are bent keys or a damaged key. If your key has a bent end, it's crucial to flatten the ends with the hammer before trying to turn it again. Use the hammer with a soft, gentle head and tap the key carefully. In the end, if your key is stuck in the ignition lock cylinder you can often get it untangled by gently jiggling the steering wheel. However, this is tricky and you need to be careful not to scratch your key while trying to untangle it. You can buy a replacement keyed Mercedes-Benz ignition tumbler if it's damaged or not working. These parts are made to fit your Mercedes original locks, meaning they will work with your Mercedes' system.