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Where is the auxiliary battery located in the Mercedes SLK 350 MK3?

Model: Mercedes Slk R172, MK 3 - Years: 2011, 2012, 2013, 2014, 2015, 2016
Part: Battery

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Video tutorial

In this video, you can see the location of the auxiliary battery in the Mercedes SLK 350: the auxiliary battery, located at the rear of the cabin behind a panel accessed by removing some plastic clips, is used in vehicles equipped with a high-end Start & Stop system when the engine automatically shuts off, to power all comfort features such as the radio, air conditioning, interior lights, etc. This prevents annoying restarts of electrical systems every time the engine is restarted; it also absorbs energy spikes, avoiding voltage fluctuations that could damage electrical components; additionally, during starting phases, the auxiliary battery supports the main battery, ensuring a quicker and safer start, especially in adverse weather conditions.


Updated on 18 October 2026 by ScegliAuto


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