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Have the Mercedes Auxiliary Battery Malfunction Fault?
If so, you need to watch this video now! We will describe everything you need to fix this fault.
All you need is a new auxiliary battery! We used the A0009819608 Battery on this 2016 Mercedes to fix the fault. Usually, after 4-5 years, the auxiliary battery will reach the end of its life.
To remove the battery, all you need is a 10mm ratchet and socket.