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Where is the 2011 Mercedes E350 auxiliary battery location?

The lights on my instrument cluster are dim. I already checked the fuses, and they’re fine. I think I need to replace the auxiliary battery. Where is the 2011 Mercedes E350 auxiliary battery location?

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Bonnie Stinson · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
The 2011 Mercedes E350 auxiliary battery location is either:
  • Under the hood
  • Next to the housing for the cabin air filter
  • In the driver’s side panel cluster
Many vehicles in the E Series have two batteries to help support the high electricity demand.
The smaller, auxiliary battery keeps your car’s electrical components (GPS, instrument cluster, Blind Spot Assist, etc.) turned on. Location of the auxiliary battery may depend on your specific model. It may be under the hood or in the driver’s side panel cluster.
Check your owner’s manual for confirmation of location before you start taking anything apart.
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