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Where is the battery located in a Mercedes S500?

2 Answers

MacJesse

07/29/25 4:29am

The Mercedes S500 has three batteries: the starter battery is located under the protective cover on the right side of the engine compartment, with newer versions using a polymer battery positioned at the top left corner of the engine cover; another battery is placed next to the spare tire in the trunk; and the auxiliary battery is housed inside the protective cover on the left side of the steering wheel (dashboard). The Mercedes S500 has a body length of 5159mm, width of 1854mm, and height of 1453mm, with a wheelbase of 3086mm. It is equipped with a full-time four-wheel-drive system, featuring double-wishbone independent suspension at both the front and rear, and utilizes a multi-plate clutch central differential.

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LePreston

08/12/25 8:12am

Last week I just helped my brother replace the battery in his S500, and it took some effort to locate it. The battery isn't in the engine compartment of this car - you have to open the trunk to see it. After lifting the trunk floor mat, look carefully on the left side for a rectangular cover with a small handle. Pull hard upward to remove the plastic cover. Hidden underneath is that rectangular battery, still connected with two thick cables. Mercedes hides the battery primarily for weight distribution balance, and since luxury cars have more electronic equipment, keeping it away from the engine compartment's heat makes it safer. Remember to turn off all electrical systems in the car before replacing the battery, and never connect jumper cables to wrong terminals during emergency charging - frying the ECU would be a costly mistake.

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