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Where can I find the auxiliary battery in a 2012 Mercedes E350?
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The auxiliary battery in the 2012 Mercedes E350 Bluetec is situated behind the dashboard in the trim panel. These secondary batteries come in various sizes and specifications based on how much the vehicle's electrical system demands from it. They can act as a backup to the main battery when needed or provide power to specific vehicle systems consistently. To charge your auxiliary battery using the alternator, you can connect the positive terminals of both batteries. An isolator is used to separate the batteries, ensuring that the alternator charges the auxiliary battery only while the engine is on and prevents the electrical loads from draining the main starting battery.
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The auxiliary battery in the 2012 Mercedes E350 is situated beneath the seat on the side where the passenger sits.
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