What to do if your Mercedes key doesnt work?
If you find that sometimes the key fob doesn’t always work the first time around, you might need to bring your key fob in for servicing. Mercedes drivers with manual keys might also begin to encounter difficulty with the efficiency of the key’s ability to start the ignition or to unlock the doors.
Do you need an ignition key for a Mercedes?
In older Mercedes models, an ignition key may be the primary method of starting, entering, and locking your car. Newer Mercedes models utilize keyless entry remotes or key fobs.
Why is my key fob on my W204 not working?
Here’s a look at some common reasons why your w204’s key fob isn’t working. Some owners report an error message, such as “key not detected,” or limited range when the key batteries are dead or very low. Fortunately, changing the key battery is simple and can be accomplished by using the valet key that comes included with the fob.
Why is my car key fob not working?
You go to start your car one day, but you get no response from your vehicle. Your first thought might be a dead car battery, which can sometimes cause the key fob to stop working. Before you call the tow truck, however, it’s important to consider other reasons why your key fob might not be working.
Why is my car key not working on my Mercedes?
It could be the car battery. If the car battery is dead, the key’s remote won’t be able to communicate wirelessly with the car at all. And to avoid the risk of damaging the electronics on your Mercedes, have the battery tested by a professional. You can unlock your car, but the key won’t turn or start the engine.
Here’s a look at some common reasons why your w204’s key fob isn’t working. Some owners report an error message, such as “key not detected,” or limited range when the key batteries are dead or very low. Fortunately, changing the key battery is simple and can be accomplished by using the valet key that comes included with the fob.
What should I do if my Mercedes FOB is not working?
If you need a replacement battery note that Mercedes-Benz uses CR2025 battery type. Ensure you have new batteries in your key fob. Next, look carefully at your Mercedes-Benz key. When you press the button on your key you should see a small RED led light.
What to do if your smart key is not working?
If your SmartKey isn’t working, you might need to re-sync it. The main symptoms are the key won’t unlock the doors or start the car. You may see a blinking red light when you press a button. Insert the key and turn it to the “ON” position, then press and release the lock button on the key.
If you need a replacement battery note that Mercedes-Benz uses CR2025 battery type. Ensure you have new batteries in your key fob. Next, look carefully at your Mercedes-Benz key. When you press the button on your key you should see a small RED led light.
Why is the panic button on my Mercedes not working?
The panic button and/or trunk unlock features don’t work. Your problem is likely that the fob can start the car but will not allow you to unlock the vehicle’s doors or trunk. In other words, it will not allow you to use the fob as a keyless entry remote. Here are some common reasons for this issue: 1. The key is defective.
If you find that sometimes the key fob doesn’t always work the first time around, you might need to bring your key fob in for servicing. Mercedes drivers with manual keys might also begin to encounter difficulty with the efficiency of the key’s ability to start the ignition or to unlock the doors.
In older Mercedes models, an ignition key may be the primary method of starting, entering, and locking your car. Newer Mercedes models utilize keyless entry remotes or key fobs.
How do you unlock the Mercedes C class key fob?
Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button. In 1-2 seconds, press the remote’s lock button five times in a row while holding the unlock button. Figure 4. Re-sync the SmartKey.
Where is the ignition key on a Mercedes Benz?
The end of the key inserts into the ignition barrel on the dash which is all plastic. Normally when the key is pushed into the barrel the ignition lights illuminate and then the key can be turned to switch the ignition on and then start the vehicle.
Why does the key not turn when inserted in the ignition?
The EIS module could also be the reason that the key does not turn when inserted in the ignition. Many car owners complain that the car starts fine on a warm or hot day but in cold days the car will not start. This may sound strange, but it is reported frequently.
Do you need to replace the ignition switch on a Mercedes?
If you do need to replace the key or the ignition switch, then it’s important to make sure that the shop you bring your Mercedes to uses only quality, certified parts that will work best for your specific vehicle.
The end of the key inserts into the ignition barrel on the dash which is all plastic. Normally when the key is pushed into the barrel the ignition lights illuminate and then the key can be turned to switch the ignition on and then start the vehicle.
Why is my ignition not working on my Mercedes Benz?
It is possible that the battery in the car is defective, as it does not provide the necessary voltage for the ECU and the N73 Electronic Ignition/Starter Switch (EIS) to function properly. If the battery is dead or has low voltage / under voltage, the CAN communication between EIS and N72 may not function properly.
How do you remove the key from the ignition?
Insert the key into the ignition. Quickly remove key from ignition and within 10 seconds hold down the lock button. Continue holding the lock button, and at the same time press, the unlock button five times.
How do you program a Mercedes fob remote?
There are a few cases when you need to program your key fob remote to your Mercedes-Benz. Below you will find general instructions on how to synchronize a Mercedes key fob. For model specific instruction check your owner’s manual. Insert the key into the ignition. Quickly remove key from ignition and within 10 seconds hold down the lock button.
What are the common problems with Mercedes key fobs?
Common Mercedes Key Fob Problems Go to top 1 Mercedes key fob not working after battery change 2 Mercedes remote doesn’t work anymore 3 Keyless remote doesn’t lock/unlock the car 4 Mercedes key fob won’t unlock doors 5 Panic button doesn’t work 6 Trunk unlock doesn’t work
How do I Sync my Mercedes fob to my car?
To synchronize a Mercedes-Benz key to your car all you need to do is insert the key into the ignition for a few seconds. This works in most cases but every now and then you may need to follow further instructions to synchronize your Mercedes key fob remote with your car.
What does the fob remote on a Mercedes Benz do?
The newer keys have a transponder integrated in them. The key fob remote serves two purposes. First it disables the anti-theft system when you unlock the car. Second, Drive Authorization System verifies the key to make sure it is the right key to start the car.
The panic button and/or trunk unlock features don’t work. Your problem is likely that the fob can start the car but will not allow you to unlock the vehicle’s doors or trunk. In other words, it will not allow you to use the fob as a keyless entry remote. Here are some common reasons for this issue: 1. The key is defective.
Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button. In 1-2 seconds, press the remote’s lock button five times in a row while holding the unlock button. Figure 4. Re-sync the SmartKey.
Why does my Mercedes Benz C class not start?
When pu the key in it tells me to remove my key and nothing else. Completely dead. Ordered a new key and it arrived this morning and still nothing…….
Why is my Mercedes C class key not working?
The main symptoms are the key won’t unlock the doors or start the car. You may see a blinking red light when you press a button. Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button.
What should I do if my Mercedes key fob is not working?
If you need a replacement battery note that Mercedes-Benz uses CR2025 battery type. Ensure you have new batteries in your key fob. Next, look carefully at your Mercedes-Benz key. When you press the button on your key you should see a small RED led light. The light should light up every time you press any of the buttons (Lock, Unlock, Panic, Trunk).
What kind of key do I need to start my Mercedes?
The type of key your Mercedes utilizes will dictate the route of diagnosis and methods of problem-solving when something goes wrong with it. In older Mercedes models, an ignition key may be the primary method of starting, entering, and locking your car. Newer Mercedes models utilize keyless entry remotes or key fobs.