How To Replace Battery Of Mercedes Key. Then move the key horizontally into the open slot and carefully lift the battery out of its compartment. A Smart Key needs two CR 2025 batteries while the Chrome Key on newer Mercedes-Benz vehicles only needs one.
In this video our CEO Scott Drozd walks you through the very simple steps required to replace the key. Place your key horizontally in the slot that is open. You can get a cover case for less than 10 see here.
Pull until the key releases.
Replace it with a new CR2032 battery with the plus side facing down. If its time to change the battery in your Mercedes-Benz key fob here are a few steps to follow. Determine Your Key Type. Replace the old CR 2025 batteries with two new batteries.
