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How to Replace the Battery on the Mercedes-Benz B-Class 150

Model: Mercedes Classe B W246, MK 2 - Years 2011-2019
Part: Battery

If you find that the dashboard lights struggle to illuminate or remain off when you turn the key, and consequently the engine does not start (the starter motor does not even turn), it means the battery is completely flat. Replacing it is very simple as it is located in the passenger compartment, on the passenger side, directly under the carpet. Once you have removed the carpet covering, disconnect the terminals, remove the securing bracket, and extract the battery from its compartment to insert the new one, securing it properly.

Updated on 23 February 2026 by ScegliAuto

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