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How to Fix a Mercedes Ignition Key That Won't Work An ignition key that doesn't work is among the most frustrating issues you'll encounter when driving the Mercedes. It can be an indicator of other issuesas well. There are three main causes of Mercedes Benz ignition key problems. They are bent keys cable, loose cables, and an electronic switch that is not working properly. Loose Cable Untight cables could cause your mercedes ignition key to be stuck in place. This problem can be solved by simply tightening the cable near the shifter. The bolt on the shifter end of the cable must be tightened to ensure that there is no slack in the wire. This is particularly important when you drive your Mercedes with the gears set to park because this can cause the shifter to move the cable a sixteenth of an inch or so, which could cause your key to get caught. The loose cable may cause the steering wheel lock to become stuck. This is a crucial security feature for your Mercedes. It stops potential thieves from moving the car away or using the steering wheel to navigate it without the use of a key. A mercedes ignition switch can also wear out and need to be replaced. It's an easy repair, but you need to ensure that the new switch is compatible with the current one. A malfunctioning switch can cause your vehicle to stop and all lights to go out and the radio stop working when the key is pressing. It is recommended that you bring your Mercedes to a repair shop for this repair, or simply purchase an OEM Mercedes ignition switch. Certain ignition keys from Mercedes can become stuck in place even when your car is in park. This is a common problem with older Mercedes models. It's typically caused by a loose connection between the locking mechanism of the ignition assembly to the shifter. Jump start is a great way to verify that your key is in good condition. This is a quick and simple method to test your battery. There are several other reasons the ignition key of your Mercedes might not turn but the most common is the battery being dead. This is a common issue for a variety of types of vehicles, and you should consult an mechanic for the exact cause of your problem. Electronic Switch The ignition switch is an essential electronic component in a vehicle. When the key is turned, it triggers various systems. The first one is for activating electric accessories, while the second turns on the ignition and fuel systems. The third position cranks the engine. The ignition key from Mercedes is unique to each car and when you insert it into your vehicle's ignition system, the electronic switch checks the key to ensure it's legitimate. If it's valid the key sends an alert to the steering lock (if your car has one) and other computer systems to unlock the door. This is a great method to get you started in your car quickly and easily -even if you have lost your keys, you'll still gain entry and exit without difficulty. However, even though we love the convenience of our ignition switches, they can create serious issues for our roads. If the ignition switch is defective the switch may not be sending enough power to your car's critical electrical components, or it may have a problem with the connections that may prevent you from starting your vehicle. One of the most common symptoms of a defective ignition switch is that it won't start your vehicle in any way. This is often due to the fact that the switch doesn't switch to the “on” position, which activates fuel or ignition systems. Another sign of a defective ignition switch is that the key does not move into the desired position, from which you can examine the dashboard for warning lights. Usually, these lights light up when you hit the ignition button. They they dim when your car is running. In other situations the dashboard lights will remain dark after you move your key to the 'on position. The reason is that the ignition switch may temporarily provide electricity to the ignition and fuel pump systems when you switch the key to 'on and then it will stop power once the key is removed from the 'on' position. It is recommended to contact an auto mechanic if you encounter any of these issues. A professional can identify if the switch is defective or not and what steps you can take to fix it. Locking the Steering Wheel Mercedes ignition keys come with an anti-theft feature. If someone attempts to break into your car and shifts the steering wheel without being present, the key will activate the steering lock and stop your vehicle from moving. This security measure protects you and your family from being the victim of a crime. It also stops thieves from taking your car. Sometimes, however, the lock won't unlock or it could be locked. This can be due to many reasons, such as damaged or worn out ignition tumblers. You can get the replacement key or fix it yourself. To fix this, you'll have to remove the ignition lock assembly. To do this, remove the plastic cover that covers the ignition and take out the fasteners. Once you've removed the ignition lock assembly, you are able to replace it with a brand new one. It is important to ensure that the new part is compatible with the parts of your vehicle. This will ensure that the locking mechanism operates properly when it is reinstalled. It is also important to ensure that the new ignition lock is installed properly and that all of the clips are correctly engaged. This is particularly important for older models. mercedes key reprogramming that can cause your mercedes ignition key to be stuck in the locked position is wear and wear on the tumblers. This is a typical issue that needs to be addressed before the cylinder is stuck or snaps off. To unlock a mercedes ignition lock that is locked in its position, apply a small pressure to the key while simultaneously turning the key. To avoid damaging the lock mechanism or the key you must apply the pressure slowly and gently. This is a simple procedure that should solve your problem within a short time. It's also a great way to ensure your mercedes ignition is secure and ready to drive whenever you need it. If you require assistance get in touch with Mercedes-Benz of Centerville near Kettering for more details or to schedule an appointment. Tumbler When you insert a key into the ignition of your Mercedes it transmits precise infrared data to the electronic ignition switch, which will start the engine. If the infrared information matches with the data stored in the ECU, the Mercedes will begin to turn. This is the start of the engine, and also powers the numerous components inside it. When your Mercedes isn't starting, it may be time to take a closer look at your ignition lock tumbler. In some cases the tumbler can get worn out and will require replacement. In other cases, it could not be able to engage the electronic ignition switch. One of the main indications that the Mercedes ignition lock tumbler may be defective is that it isn't turning to the right position. This can be frustrating as you may be fighting the lock for a while before turning. A malfunctioning ignition tumbler could also cause the key to become jammed or become completely blocked once it is in the lock. If this happens it's essential to bring the vehicle to your local Mercedes specialist so that they can examine and repair the ignition tumbler of the lock. A bent key or a damaged key could be reasons behind why your Mercedes Benz ignition lock tumbler isn't turning. If your key is bent at the end, it's crucial to flatten the end with a hammer and try to turn it again. Make sure you use a soft-headed hammer and that you tap very carefully. You can sometimes remove your key from the ignition lock cylinder by gently jiggling it. However, this can be difficult and you should be cautious not to damage the key as you try to free it. You can purchase a replacement keyed Mercedes-Benz ignition lock tumbler , if it's damaged or is missing. These parts are specially designed to fit your Mercedes original locks, so they can be used with your Mercedes system.