GLK-Class (X204) Produced 2008-2014

2012 glk350

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Old 04-09-2024, 12:21 AM
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glk350 4matic
2012 glk350

where is the auxiliary battery located on 2012 GLK350 4matic 3.5 V6
nothing anywhere online is correct its not in the trunk in the dash or under the passenger seat.
does anyone know where this could be located ????

Last edited by Tomahawk2023@; 04-09-2024 at 12:25 AM.
Old 04-09-2024, 02:31 AM
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bone stock E55 AMG
moved to X204 forum...
looks like it is under the trunk...
https://mbworld.org/forums/glk-class...y-service.html
Old 04-09-2024, 06:22 AM
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I don't believe 2012's had the auxiliary battery.
Old 04-09-2024, 06:33 AM
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2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
Originally Posted by Tomahawk2023@
where is the auxiliary battery located on 2012 GLK350 4matic 3.5 V6
nothing anywhere online is correct
I wouldn't say "nothing online is correct".

Our 2014 350 base has an Aux in the rear spare compartment. BlueTecs have an Aux in the extreme left-side dash panel.

Why are you looking for the Aux?? Do you see the "Aux battery malfunction" message on the dash? Some other reason? Some GLKs don't have an Aux battery.
Old 04-09-2024, 09:24 PM
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glk350 4matic
I even called 5 mercedes benz dealers with my vin number
all the said was in the trunk and under the drivers side dash
its really crazy how not even the dealer knows and i believe also
it dont have an auxiliary battery thanks for the info
Old 04-09-2024, 09:31 PM
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2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
You never answered the "why are you looking for it" question.
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Old 04-09-2024, 09:31 PM
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glk350 4matic
yes 100% incorrect information online your very wrong there everything it said about the location
it wasn't there and when i called the mercedes benz dealer they said under the dash drivers side or in the trunk.
they cant even identify with the vin number if my mercedes benz has an auxiliary battery.I tore that car apart for all the false info online.
the thing i found was it gave me 2011 or 2013 and listed as the 2012 glk 350
Old 04-09-2024, 09:34 PM
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because when i called the road side number and explained what happened they told me it was the auxiliary battery
if the information was correct i wouldn't be on here asking questions
Old 04-10-2024, 12:10 AM
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Originally Posted by Tomahawk2023@
because when i called the road side number and explained what happened they told me it was the auxiliary battery
if the information was correct i wouldn't be on here asking questions
Then please share with us what you explained to the roadside assistance rep. Unless I missed something, that isn’t anywhere in this thread.
There is everything here from casual readers, to people who DIY routine service, to serious amateurs, to independent mechanics, to restorers and rebuilders, to MB line techs. Most are trying to be helpful.
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Old 04-10-2024, 08:57 AM
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2013 glk 350
2013 is first year of auxiliary battery .

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