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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 have to deal with when driving in a Mercedes. It could be a sign of other issues, too. There are three main causes for Mercedes Benz ignition key problems. They are a bent or bent key cable, loose wires, and an electronic switch that is not working properly. Loose Cable Loose cables could cause the ignition key of your Mercedes to get stuck. This problem is easily solved with simply tightening the cable connected to the shifter. Make sure the nut on the end of the cable that connects to the shifter is tightly tucked to ensure that the cable does not sag. This is particularly important for those who drive their Mercedes with the gear in park, because this can cause the shifter to move the cable one-sixteenth inch or so, which may result in your key getting caught. The loose cable could cause your steering wheel lock to become stuck. This is an essential security feature of your mercedes as it blocks criminals from attempting to push the car away or using the steering wheel to steer the vehicle without a key. The ignition switch on a Mercedes can be damaged and will need to replaced. It's an easy fix, but it is important to make sure that the new switch is compatible with the current one. A faulty switch could cause your car to stop the engine, all lights to go out and the radio to stop functioning when the key is press. You can either take your Mercedes to the repair shop or purchase a replacement OEM Mercedes ignition button. Certain Mercedes ignition keys may get stuck even when the car's in park. This is a common issue with older Mercedes models. It is usually caused by a loose connection between the locking mechanism within your ignition assembly to your shifter. Jump start can be used to verify that your key is still in place. This is a great method to test the battery, as well as an easy and affordable solution. There are many reasons why your Mercedes ignition keys might not turn. The most common is an unbalanced or dead battery. This is a common issue for many different types of vehicles and it is recommended that you consult an mechanic for the exact cause of your problem. Electronic Switch The ignition switch is an important electronic component in a vehicle. As the key is turned it activates various systems. The first position activates electrical accessories, while the second power on fuel and ignition systems, and the third turns the engine. Each mercedes ignition keys is unique. When mercedes sprinter spare key insert the key into the ignition of your vehicle the electronic switch confirms the authenticity of the key. If it's valid, it sends a signal to the steering lock (if your car has one) as well as other computer modules to unlock the door. This is a great method to allow you to start your car quickly and effortlesslyand even if have lost your keys, you'll still access the car without difficulty. However, as much as we like the convenience of our ignition switches, they also cause issues on the road. When the ignition switch is faulty it could not be supplying enough power to the vital electrical components, or it could be missing important connections that could keep your vehicle from starting. One of the most common symptoms of a faulty ignition switch is that it will not start your vehicle at all. It's usually because the switch doesn't turn to the “on” position- which powers on fuel and ignition systems. A defective ignition switch could also cause the key to not move into the first position. This is where you should look for warning lights on your dashboard. These lights typically turn on when you press the ignition key. They will dim when 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 temporarily provides power to the ignition, fuel pump systems if the key is turned to 'on'. However it will cut off power after the key is removed. If you have any of these issues, your best bet is to seek out a diagnosis from an auto mechanic. An expert can determine if the switch is defective or not and the best steps to take to repair it. Steering wheel lock Mercedes ignition keys have an anti-theft feature. If someone tries to break into your vehicle and manages to move the steering wheel, even though you're not around, it will activate the lock on the steering wheel and stop the car from moving. This safety measure protects you and your family from being victim to the perpetrator of a crime. It also stops thieves from driving off with your car. Sometimes, however, the lock may not unlock or be locked in an unlocked position. It could be due to several reasons, such as broken or worn out ignition tumblers. You can get the replacement key or fix it yourself. The first step to fixing this is to remove the ignition lock assembly. To accomplish this, you'll need to remove the plastic cover on top of the ignition and then take out the fasteners that secure it. After you've removed your ignition lock assembly, you can replace it with a brand new one. It is important that the new part matches the parts of your vehicle. This will ensure that the locking mechanism works perfectly when it's installed. You should also ensure that the new ignition lock is properly installed and that all of the clips are engaged correctly. This is particularly crucial for older models. Wear and tear on the tumblers might also cause your mercedes ignition keys to be stuck in their locked position. This is not a typical issue and should be addressed before the cylinder is completely stuck or snaps off. To unlock an ignition lock from a Mercedes that is locked in its position, apply a bit of pressure to the key while simultaneously turning the key. To avoid damaging the lock mechanism or the key you must take your time and do it slowly and gently. This is a simple and simple way to fix your problem. This is a great method to make sure the Mercedes ignition is functioning and secure so you can drive it at any time you want. If you require additional assistance, 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 transmits detailed infrared information to the electronic ignition switch to begin the engine. As the infrared signal matches what's stored in the ECU, the Mercedes will begin to turn. This will start the car's engine and powers the various systems inside it. If your car isn't getting started it could be time to look at your ignition lock's tumbler. Sometimes the tumbler will just wear out and will need to be replaced. Sometimes, the tumbler may not be able the electronic ignition button. The most obvious sign that the Mercedes ignition lock tumbler could be defective is when it does not move in the right direction. When this happens, it can be a hassle as you might have to struggle with the lock for a long period of time before you are able to start the car. A malfunctioning ignition lock's tumbler can cause the key to block or even become completely blocked when it is put into the lock. It's crucial that you take your vehicle to your Mercedes specialist in the event of this. They can then look at and fix the ignition switch's tumbler. A bent or worn-out key could also be reasons behind why your Mercedes Benz ignition lock tumbler cannot turn. If the bent end of your key is causing it not to turn, you can flatten it with a hammer and ensure it is straight. Make sure you employ a hammer that is soft and tap it very carefully. You can sometimes untangle your key from the ignition lock cylinder by gently jiggling it. This can be tricky so make sure not to end up damaging your key in trying to untangle it. You can get a replacement keyed Mercedes-Benz ignition lock tumbler , if it's damaged or not working. These parts are specifically designed to fit the original locks of your vehicle so you can be assured that they'll be able to work with the system that is in your Mercedes.