What is the method for replacing the key battery in the Mercedes-Benz C240 4MATIC?

1 Answers
EmersynFitz
07/29/25 7:25pm
Mercedes-Benz C240 4MATIC key battery replacement method is: Push the marked switch upward from the tail of the key to remove the mechanical key; Press the marked position on the mechanical key to open the key casing; Use a card to pry the battery from the gaps on both sides and remove it; After replacing the battery, reinstall the casing and put the mechanical key back in place. Taking the 2020 Sport version Mercedes-Benz C240 as an example, its body dimensions are: 4704mm in length, 1810mm in width, 1454mm in height, with a wheelbase of 2840mm, a fuel tank capacity of 66 liters, and a curb weight of 1620kg.
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