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How to Fix a Mercedes Ignition Key That Won't Work An ignition key that does not work is one of the most frustrating things you'll encounter when driving an Mercedes. It could be a sign of other issues. There are three primary reasons for Mercedes Benz ignition keys problems. These are a bent key or cable that is loose, as well as an electronic switch that is malfunctioning. Loose Cable Cables that are loose can cause your mercedes ignition key to be stuck. This is an issue that can be solved by 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 so that the wire does not sag. This is especially important if your Mercedes is in park position. The shifter can move the cable by about 1/16 inch, which could cause your key to be stuck. This loose cable can also cause your key to be tied to the lock on your steering wheel. This is an important safety feature for your Mercedes. It prevents potential thieves taking the car away or using the steering wheel to drive without the use of a key. Another issue that could arise with a mercedes ignition switch is that the electronic switch can wear out and need to be replaced. This can be a fairly easy repair, but you need to make sure that the new switch is compatible with the one that is currently in use. A damaged switch could cause your car to stop the engine, all lights to go out and the radio stop working when your key is in use. It is recommended that you bring your Mercedes in to have this repaired or buy a new OEM Mercedes ignition switch. Certain ignition keys from Mercedes can be stuck in place even when the car is in park. This is a frequent issue in older Mercedes models, and is usually caused by loose cables that connect the locking mechanism inside your ignition assembly to the shifter. Jump start can be used to verify if the key is still in its place. It's a quick and easy way to test your battery. There are a myriad of reasons your ignition keys for Mercedes may not work. The most frequent reason is an unbalanced or dead battery. This is a frequent issue for a variety of types of vehicles and you should seek the advice of an mechanic for the root cause of your problem. Electronic Switch The ignition switch is an essential electronic device in a car. It has a variety of positions that provide power to various systems when the key is turned. The first position activates electrical accessories, while the second one is for turning the ignition and fuel systems. The third one cranks the engine. Each ignition key for mercedes is unique. When you insert the key into your car's ignition the electronic switch confirms the authenticity of the key. If the key is legitimate it will send an indication to your car's steering lock and other computer modules to unlock your door. This is a great way to help you start your car quickly and easily- and even if you have lost your keys, you can still get in and out without difficulty. However, while we love the convenience of our ignition switches, they can also cause problems while driving. When the ignition switch is malfunctioning the switch may not be supplying enough energy to your vehicle's vital electrical components, or it may have a problem with the connections that can prevent your vehicle from starting. One of the most frequent indications of a damaged ignition switch is that it can't start your vehicle at all. This is typically due to the issue that the switch does not change to the “on” position, which powers on fuel or ignition systems. Another indication of a damaged ignition switch is that it does not move into the desired position, which is where 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 other instances the dashboard lights will remain dark when you turn your key to the 'on' position. The reason for this is because the ignition switch will momentarily provide electricity to the fuel pump and ignition systems when you turn the key to 'on but it will cut off power as soon as the key is removed from the 'on' position. If you're experiencing any of these issues, your best bet is to seek the advice of an auto mechanic. A professional will be able to identify if the switch is defective or not, and the steps to take to correct it. Locking the steering wheel Mercedes ignition keys have been designed with an anti-theft feature in mind. If someone attempts to steal your car and then moves the steering wheel, without being present, it will trigger the steering lock and stop the vehicle moving. This security measure helps protect your family and you from being a victim of the perpetrator of a crime. It also stops thieves from taking your car. Sometimes, however, the lock won't unlock, or it may be stuck in a locked position. It can happen for several reasons, such as damaged or worn out ignition tumblers. You can either purchase an alternative key or fix it yourself. To fix this issue, you will need to remove the ignition lock assembly. To do this, you'll have to remove the plastic cover that is on top of the ignition and then take out the fasteners to secure it. Once you've removed your ignition lock assembly, you are able to replace it with a new one. It is crucial that the new part matches the car's components. This will help ensure that the locking mechanism is working perfectly when you install it. Also, make sure that the new ignition lock has been properly installed and that all clips are properly engaged. This is particularly important for older models. Another issue that can cause your mercedes ignition key to stop working in the locked position is wear and tear on the tumblers. This isn't a common problem and should be repaired prior to the cylinder becoming completely stuck or snapped off. To unlock the mercedes ignition keys that are stuck in the locked position, you should apply a small amount of pressure to the key while turning it. To avoid damaging the lock mechanism or the key it is best to apply the pressure slowly and gently. This is a simple process that can solve your issue in a matter of minutes. It's also a great way to ensure that your Mercedes ignition is secure and ready to go when you need it. If you need additional help you can contact Mercedes-Benz of Centerville near Kettering for more information or to schedule an appointment. Tumbler When you insert a key into the ignition of your Mercedes it transmits precise infrared information to the electronic ignition switch, which will start the engine. When the infrared data matches what's stored in the ECU, the Mercedes will begin to turn. This is the start of the engine and powers the various systems inside it. If your car won't start It could be time to inspect the ignition lock tumbler. In some cases, the tumbler will simply wear out over time and need to be replaced. Other times, it will not be able to turn on the electronic ignition switch. One of the main signs that your Mercedes ignition lock tumbler is faulty is that it will not turn to the right position. mercedes car key repair can be frustrating since you might need to fight the lock for a long time before turning. Another symptom of an ignition lock tumbler that's failing is that it may get jammed up or completely block the key when it's placed into the lock. If this happens it's essential to bring the vehicle to a local Mercedes specialist to have them examine and repair the ignition tumbler of the lock. Other possible causes for a Mercedes Benz ignition lock tumbler that isn't turning include bent keys or a worn out key. If the bent part of your key causes it to not turn then you can flatten it with a hammer to make it straight. Make sure to employ a hammer that is soft and tap it very carefully. You may be able to remove your key from the ignition lock cylinder by gently jiggling it. It can be difficult, so make sure you don't end up damaging your key in trying to loosen it. If you've got a damaged or missing Mercedes ignition lock tumbler, you can purchase an original keyed replacement from your local Mercedes-Benz dealer. These parts are specially designed to fit your Mercedes original locks, so they will work with your Mercedes' system.