Why does my Mercedes key blink red?
If the red light on the key fob comes on when you press the lock/unlock button then the battery is fine. The key has two components to it. A radio frequency component that operates the locking/unlocking of the car and an infrared component that starts the car.
How to change the battery on a Mercedes Benz key fob?
How to change the battery on the Mercedes Benz Smart Key Fob. How do you know you need a new battery? The remote lock or unlock range is poor. Or even worse, door lock/ unclock is not even working.
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.
Can you replace the battery in a Mercedes E350?
Recently my 2014 E350 gave me a message, on the instrument cluster, to replace the battery in my key. OK, looked up the type of battery, bought one, inserted it, all done.
What kind of battery do I need for my Mercedes smart key?
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 ones, as they last much longer. First you need to identify which key you have. There are several models.
How to change the batteries in a Mercedes Benz key?
Changing is simple if you know how, this video shows how to replace the batteries in a key for a Mercedes Benz. The batteries required for this key are one CR2025 batterie. Loading…
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.
Recently my 2014 E350 gave me a message, on the instrument cluster, to replace the battery in my key. OK, looked up the type of battery, bought one, inserted it, all done.
Why does the change key battery warning still appear?
It was only after the smart function sensitivity had significantly faded over a 1-2wk period before the change key battery warning appeared. Does anyone have any ideas of how to fix this issue?