What to Do When a Mercedes Key Fob Battery Dies?

1 Answers
RileyFitz
07/29/25 6:06pm
Mercedes vehicles come standard with keyless entry and keyless start functions. If the battery dies when you're trying to open the door, the owner can pull out the hidden mechanical key inside the remote to unlock the door and enter the vehicle. Similarly, you can remove the push-button start cover and insert the key to start the engine. Here are the signs that a Mercedes key fob battery is running low: 1. The remote control range becomes shorter. For example, you might normally unlock the car from 5-6 meters away, but now you have to stand right next to the door. 2. The key occasionally malfunctions. For instance, where a single press used to open the door, now it takes two or three presses. 3. The indicator light on the key becomes dim or flickers. Some higher-end models will display a warning on the dashboard to alert the owner that the key battery is running low.
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