Can a key battery be replaced on a Mercedes?
Sometimes a little luck helps too. Most important is that you resolved your problem and saved big bucks! I bought some El Cheapo batteries from IKEA and went through two of them showing “replace Key battery” — the third one fixed it. Perhaps there is a lot of variability in the batteries.
Why does my key fob not work after replacing the battery?
Correspondingly, why does my key fob not work after replacing battery? The most common problem with these car key fobs is that the batteries just go dead over time, in which case replacing the battery should fix the problem. Take the key fob apart and check for broken contacts or misaligned buttons.
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).
Why does my car say replace key battery?
The car starts fine but the ‘replace key battery’ message never goes away. It seems like the sensor in the car itself has gotten weak, and this weakening progressively got worse until the key would not work to unlock/lock the doors at all (again, works just fine every time when manually pressing the buttons).
Sometimes a little luck helps too. Most important is that you resolved your problem and saved big bucks! I bought some El Cheapo batteries from IKEA and went through two of them showing “replace Key battery” — the third one fixed it. Perhaps there is a lot of variability in the batteries.
Why is my key fob not working on my Mercedes?
If neither of your key fobs unlocks or starts the car, there’s a good chance that the issue is the car’s battery. Some owners report that their cars failed to start even after a jump start, but a later trip to the dealership indicated a dead car battery.
Can you change the battery on a key fob?
The message to change the battery in the key fob appeared about 6 months ago. So I did, I bought a brand new battery but the message came up the next time I used the key even though I replaced the battery. I have no problem unlocking the doors using the push button on the key fob or grabbing the door handle.
Why does my car key not recognize the new battery?
One thought- it may be that I did not let the key sit without a battery long enough (when I first put in a new battery) and the key held a charge long enough that the car did not recognize that it had a new battery. I don’t know if the key can do that, but I didn’t do anything but move batteries around between the keys and now it’s fine.
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.
Why do I get a message when I change the battery in my Mercedes?
If you have old/fake batteries I can see you getting that message all the time. I have a similiar issue, but changing batteries in either key fob doesn’t help, and the car is having trouble sensing either key.
Do you have to change the battery on a Mercedes key?
Although all Mercedes keys require the same type of battery (CR 2025), how many you will need or the method you use to change the battery will depend on which model you have. Compare your key to other models before you attempt changing its batteries to avoid damaging your keys or accidentally following the wrong instructions.
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).
Why is the battery on my Mercedes Benz not working?
Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz?
Can you unlock a Mercedes with a dead battery?
A Mercedes key with dead batteries is no laughing matter. Until you replace them, you may not be able to remotely unlock your car or trigger the car’s panic mode in case of emergency.
What kind of battery do I need for my Mercedes?
Some Mercedes keys, especially old models, are fragile and may not work if they have been dropped or damaged. Use a case to protect your keys from unexpected falls or scratches. Silicone key cases are recommended because they are more durable. Use lithium batteries when changing your key batteries.
Why does my Mercedes tell me to replace the battery?
This morning however the message was “Key not detected” so I had to start the car using the actual key. Then when I restarted the car after driving about an hour it detected the key and I could start the car with the push button, but the message to replace the battery appeared again.
Can you change the batteries in a Mercedes key?
Changing the batteries in your Mercedes key is simple if you know how, this video shows how to replace the batteries in a key for a Mercedes vito van. The batteries required for this key are two CR2025 batteries. Loading… When autoplay is enabled, a suggested video will automatically play next.
What kind of battery does a Mercedes Benz FOB use?
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.