How to Fix a Mercedes Ignition Key That Won't Work

One of the most frustrating issues to face when you own a Mercedes is an ignition key that does not work. It could be a sign of other issues.

There are three main causes for Mercedes Benz ignition keys problems. They are bent keys or cable that is loose, as well as an electronic switch that is malfunctioning.

Loose Cable

Untight cables can cause your Mercedes ignition key to become stuck. This problem can be solved by tightening the cable around the shifter.

The bolt on the shifter end of the cable must be tightened up to ensure there is no slack left in the cable. This is crucially important in the event that you drive your Mercedes with the gears set in park position, because this can cause the shifter to move the cable by about a 16th of an inch or so, which may cause the key to become stuck.

The loose cable could cause your key to be tied to the steering wheel lock. This is a crucial security feature of your Mercedes. It will stop potential thieves from driving the car away or using the steering wheel to navigate it without a key.

Another issue that can arise with a mercedes ignition key is that the electronic switch can get worn out and need to be replaced. This is a straightforward fix that is quick and easy to do but it is vital to ensure that the new switch matches the one you currently have.

A malfunctioning switch can cause your car to stop with all lights going out and the radio not working when the key is pressing. It is best to bring your mercedes in to have this repaired or buy the new OEM Mercedes ignition switch.

Certain ignition keys of Mercedes can also be locked even when the vehicle is in park. This is a common issue with older Mercedes models. It's usually caused by a loose cable connecting the locking mechanism inside the ignition assembly to the shifter.

If you have a key that is locked in place, you must try a jumpstart and see if this solves the issue. This is a quick and easy way to test the battery.

There are a myriad of reasons your Mercedes ignition keys may not turn. The most frequent reason is an inoperable or damaged battery. This is a common issue for many different brands and models of cars and you should speak with an automotive mechanic to determine the exact cause of your problem.

Electronic Switch

The ignition switch is an essential electronic part in a vehicle. As the key is turned, it activates different systems. The first position activates electrical accessories, while the second one is for turning the ignition and fuel systems. The third one cranks the engine.

The ignition key for the Mercedes is unique to each vehicle and, when you insert it into the ignition system the electronic switch tests the key to make sure it's valid. If the key is legitimate it will send the signal to the steering lock of your car and other computer components to unlock your door. This is a great method to start your car quickly and easily- and even if you lose your keys, you'll still access the car without any trouble.

But, despite the fact that we love the convenience of our ignition switches they can be a source of serious trouble for our roads. If your ignition switch is malfunctioning, it could not send enough power to your car’s vital electrical components or could be missing crucial connections that can prevent you from starting your vehicle.

One of the most common signs of a malfunctioning ignition switch is that it won't start your car at all. This is typically due to the issue that the switch does not switch to the "on" position, which activates fuel or ignition systems.

Another sign of a faulty ignition switch is that the key won't go into the first position, where you can look for warning lights on the dashboard. Usually, these lights come up when you press the ignition button and fade when the vehicle is running.

In other cases the dashboard lights remain dark once you have moved your key to the "on position. The reason for this is that the ignition switch will temporarily provide electricity to the ignition and fuel pump systems if you switch the key to "on however it will shut off power when the key is removed from the 'on' position.

If you are experiencing any of these issues, the best way to fix it is to seek a diagnosis from an auto mechanic. A specialist can tell you if the switch is defective and what steps to follow to repair it.

Steering wheel lock

Mercedes ignition keys are created with an anti-theft feature in mind. If someone breaks into your car and manages move the steering wheel even though you're not around it will activate the steering wheel lock and prevent the vehicle from moving.

This safety measure is designed to guard you and your family from being injured in the event of a crime. It also prevents thieves from stealing your car.

However, there are times when the lock won't unlock, or it may be stuck in a locked position. This can be due to many reasons, including damaged or worn ignition tumblers. You can get the key replaced or fix the problem yourself.

To fix this issue, you'll need to take off the ignition lock assembly. To do this, you will have to remove the cover made of plastic on top of the ignition and then take off 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 essential that the new component matches the components of your car. This will ensure that the locking mechanism is working well when it's reinstalled.

Also, make sure that the new ignition lock is properly installed and that all clips are engaged. This is especially crucial for older models.

Wear and tear on the tumblers can cause your Mercedes ignition keys to become stuck in their locked position. This is a common problem that needs to be addressed before the cylinder is stuck or snaps off.

To unlock a mercedes ignition key that's stuck in the locked position, try applying a little pressure to the key while simultaneously turning it. To avoid damaging the lock mechanism or the key it is best to apply the pressure slowly and gently.

This is a quick and simple solution to your problem. This is a great way to ensure your Mercedes ignition is ready and secure so you can operate it whenever you need to. If you need additional help, contact Mercedes-Benz of Centerville near Kettering for further details or to schedule an appointment.

Tumbler

When you insert an ignition key into the ignition of your Mercedes it transmits information to the electronic ignition switch to 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 time to check the ignition lock tumbler. Sometimes the tumbler will just get old and needs to be replaced. Sometimes, the tumbler may not be able to engage the electronic ignition button.

One of the main signs that the Mercedes ignition lock tumbler is defective is that it won't turn to the right position. If hop over to these guys happens, it can be frustrating because you may be fighting with the lock for a long time before you are able to start the car.


A malfunctioning ignition tumbler could cause the key to jam up or become completely blocked once it is put into the lock. It's essential to take your vehicle to your Mercedes specialist in the event of this. They will then be able to examine and service the ignition switch tumbler.

Other possible causes for the Mercedes Benz ignition lock tumbler that isn't turning are bent keys or a worn-out key. If your key is bent at the end, you must flatten the ends with the hammer before trying to turn it over. Make sure to use a soft-headed hammer and that you tap very carefully.

If your key is stuck in the ignition lock cylinder you can often get it untangled by gently jiggling the steering wheel. This can be tricky so make sure you don't harm your key when trying to untangle it.

If you've got a damaged or missing Mercedes ignition lock tumbler, you can order an original keyed replacement from your local Mercedes-Benz dealer. These parts are made specifically to fit the original locks in your vehicle and you can be assured that they'll be able to fit into the system of your Mercedes.