How to replace a battery in a Mercedes Benz key fob?
This video explains how to replace your battery in a Mercedes Benz Key Fob with built in transponder. The procedure requires two (2) new CR2025 3V button cell batteries (Yes Mercedes requires two batteries, because they just have to one up the competition 😉 ).
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.
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 should I do if my key fob is not working?
Remove the metal key from the keyfob and use it to manually unlock the doors. Next, you need to check the fuse for the central locking circuit. Not only that but also look at the fuse for the Antenna Module and AAM.
How do you reset the key fob on a Mercedes ML320?
Press and hold the “LOCK” button on the key fob. Remove the key from the ignition. Keep the “LOCK” button held down while removing it. Press and release the “UNLOCK” button five times. Release the “LOCK” button. The fob is reset. “2010 Mercedes ML320 Owners Manual”; Mercedes-Benz USA; 2009
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
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.
Can a key fob be reset on a new car?
If a new key is acquired to use with the car, the key fob will need to be reset so that it can work with that individual car. The fob may also need to be reset after a battery has been replaced. Insert the key into the ignition. Press and hold the “LOCK” button on the key fob. Remove the key from the ignition.
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.
Is there a hidden key hole in a Mercedes Benz?
Here, we update a demonstration opening and starting a push-button start Mercedes-Benz with a dead key fob battery and a hidden keyhole. This update is a result of a new key fob style introduced in 2017 by Mercedes. The hidden key hole was introduced in 2015 in S- and C-Class models and has been added to other models going forward.
What to do if your Mercedes Benz key is not working?
You will have to purchase this (Foxwell, iCarsoft, and Bluedriver models are all recommended for Mercedes Benz), or you can ask a mechanic if you’re not comfortable doing this yourself. To use a diagnostic scanner, turn your car’s engine off and plug the scanner into the diagnostic link connector under the dashboard.
How do you change the battery in a Mercedes Benz key fob?
The battery is easy to change yourself. Instructions on how to change the battery on any Mercedes-Benz key fob can be found here: No programming is required after you replace the key battery. Insert the key in the ignition to start the car once, and the key should function properly including the door lock/unlock feature.
What to do if your Mercedes smart key battery is dead?
Next, remove the Start / Stop button from the ignition lock. You can quickly pull it from the ignition. The Start/Stop button will pop out. Insert your smart key into the ignition. It is ok if the smart key battery is dead. Press the brake pedal and make sure the transmission is in Park position.
How do you start a Mercedes with a dead key?
The alarm will go off when you manually open the driver’s door. Don’t worry! The alarm should stop as soon as you insert the key into the ignition as described in the next few steps. Next, remove the Start / Stop button from the ignition lock. You can quickly pull it from the ignition. The Start/Stop button will pop out.
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.
When does the key fob battery need replacing?
One side of the battery is marked with the “+” sign. It’s important to install the new battery the same way, or it won’t work. If you are not mechanically inclined, visit your dealer; they should be able to change the key fob battery for you.
Why does my car not recognize my key fob?
In cars with a push button start, a vehicle may not always recognize a smart key fob in your pocket or purse if the fob battery is weak. In some cars, a warning message “key fob battery low” may also pop up on the driver’s display.
How do you change the battery on a chrome key?
Although Chrome and Smart Keys operate in a similar way, their batteries are changed in different ways. Spot the latest Chrome model by its red triangular button. The current Chrome key model has a red triangle for its panic button. The words “panic” should be written on this button in capital letters.
This video explains how to replace your battery in a Mercedes Benz Key Fob with built in transponder. The procedure requires two (2) new CR2025 3V button cell batteries (Yes Mercedes requires two batteries, because they just have to one up the competition 😉 ).
When do I need a key fob battery replacement?
(CR2025) – Mercedes key fob battery replacement. Year 2004 – 2014 C, E, CLK, GL, S class. If playback doesn’t begin shortly, try restarting your device.
Remove the metal key from the keyfob and use it to manually unlock the doors. Next, you need to check the fuse for the central locking circuit. Not only that but also look at the fuse for the Antenna Module and AAM.
What kind of battery do Mercedes key remotes use?
There are several Mercedes Smart Key remotes so make sure to look at the correct video. We strongly recommend using a Lithium battery like these one s, as they last much longer.