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How to Replace the Auxiliary Battery in the Mercedes CLS?

Model: Mercedes CLS MK 2, C218 - Years 2010-2018
Part: Battery

In this tutorial, you will see how to replace the auxiliary battery in the Mercedes CLS, a very simple and quick operation. First, ensure the key is not inserted, then open the boot and remove the floor panel to access the spare wheel. Next, locate the battery on your right, loosen the nut on the negative terminal with a 10mm socket, and disconnect it. Repeat the process for the positive terminal, unscrew the bolt of the mounting bracket, and remove the battery from its housing. To fit the replacement, simply follow the reverse procedure.

Updated on 6 July 2026 by ScegliAuto

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