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How to Replace the Battery in a Mercedes-Benz E220 Key?

1 Answers

MacStella

07/30/25 3:39am

Mercedes-Benz E220 key battery replacement steps are: 1. Remove the mechanical key from the smart key; 2. Use the mechanical key to press the shallow slot on the smart key, and the back cover will pop out automatically; 3. Take out the old battery and install the new one; 4. Reattach the back cover and the mechanical key. Taking the 2021 Mercedes-Benz E-Class as an example, its body dimensions are: length 5078mm, width 1860mm, height 1484mm, wheelbase 3079mm, fuel tank capacity 66l, equipped with a 1.5t turbocharged engine, maximum power 135kw, maximum torque 280nm.

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