How to Replace the Battery in a Mercedes-Benz S-Class Key?

1 Answers
LaAlexander
07/29/25 6:29pm
To replace the battery in a Mercedes-Benz S-Class key, follow these steps: 1. Remove the mechanical key; 2. Insert a tool into the slightly larger hole at the back of the key slot and gently pry it open; 3. Press lightly on the battery to remove and replace it. Taking the 2021 Mercedes-Benz S-Class as an example, its body dimensions are: length 5290mm, width 1921mm, height 1503mm, with a wheelbase of 3216mm and a fuel tank capacity of 76 liters. The 2021 Mercedes-Benz S-Class is equipped with a 3.0T twin-turbocharged engine, delivering a maximum power of 230kW and a maximum torque of 450Nm, paired with a 9-speed automatic transmission.
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