Location of small aux battery in 2013 G63
Thread Starter
Junior Member
Joined: Jan 2012
Posts: 22
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G63 AMG
Location of small aux battery in 2013 G63
Hi team, I am trying to replace the small 12V 1.2Ah auxiliary support battery in a 2013 G63. Can anyone please point me in the right direction as to where this is located? Anything from a basic description to a workshop manual graphic would be very appreciated.
Note, I'm not looking for the medium sized auxiliary battery that sits under the main battery. I need the little guy. I've been told to the left of the dash (didn't see it), to the right of the dash (didn't see it), under the main battery, in the trunk under the carpet, in the trunk on either side. Cannot find this thing.
Thanks!
Note, I'm not looking for the medium sized auxiliary battery that sits under the main battery. I need the little guy. I've been told to the left of the dash (didn't see it), to the right of the dash (didn't see it), under the main battery, in the trunk under the carpet, in the trunk on either side. Cannot find this thing.
Thanks!
Super Member
Joined: Jun 2025
Posts: 784
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From: USA
Check under the driver's footwell carpet. Peel back the carpet on the left side near the door sill. You'll find a small plastic cover. The little auxiliary battery is underneath that cover. It's a tight spot but that's where it's hidden in that model year.
Thread Starter
Junior Member
Joined: Jan 2012
Posts: 22
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G63 AMG
Is this a use plastic pry tool type thing, in terms of peeling back the carpet? Is it a huge pain in the butt?
I am trying to correct occasional minor electrical gremlins that come and go (right rear window control can lower but not raise; glove box light isn't always on; parking sensors freak out). All batteries were original, so I'm thinking replace each one (main, medium aux, and tiny aux) in case that's the cause of the intermittent issue.
