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2013 E350 AUX BATT

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Old Apr 28, 2022 | 08:24 PM
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2013 E350 Wagon
2013 E350 AUX BATT
Can someone share with me the exact location of the Auxiliary Battery on my WAGON?

It is NOT in the rear trunk/spare tire area. I have completely disassembled the entire area behind the second row seats, down to the metal and there is NO battery there.

Neither is there an AUX battery up by the main battery which is located in the engine compartment, passenger side, on the firewall, over the intake fan.

Please help; I have had a LOT of bad advice and just need to know the facts.

Thanks in advance,
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Old Apr 28, 2022 | 08:41 PM
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W212 MY'14 M276-3.5NA @75kMi
AUX Location (wagon, No ECO)
You've almost looked everywhere... yet have you looked inside the left side of the dashboard?

Pop the dash side panel to discover your small Aux batt.
Last edited by CaliBenzDriver; Apr 28, 2022 at 08:44 PM.
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Old Apr 28, 2022 | 10:52 PM
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2013 E350 Wagon
Aux Batt
I popped the dash side-panel on the driver's side and discovered NOTHING!
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Old Apr 28, 2022 | 11:19 PM
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2013 E350 Wagon
Aux Batt
Folks this is a Wagon and there are some major differences form a Sedan, like this particular problem.
Here are some photos of what I found:


Last edited by jayres; Apr 28, 2022 at 11:21 PM. Reason: add info
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Old Apr 29, 2022 | 12:01 AM
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1983 Nissan Shltbox
You don't have an aux battery.
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Old Apr 29, 2022 | 12:02 AM
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2013 E350 Wagon
OK, so the message on the dash is false?
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Old Apr 29, 2022 | 12:09 AM
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1983 Nissan Shltbox
Lol it's in the dash bro. Look harder.
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Old Apr 29, 2022 | 06:23 AM
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2016 E350 Sedan SPort
Aux battery E
try attached


see attached
Attached Files
File Type: pdf
auxiliary-battery-replace.pdf (2.87 MB, 1112 views)
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Old Apr 29, 2022 | 07:36 AM
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S212 E350 Estate
FWIW, on my 16' wagon, the aux battery was all the way in the back by the spare tire by the rear bumper. It's also covered by a felt box.

:16 into the video
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Old Mar 3, 2024 | 11:43 PM
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w212 e63s amg estate
I have a 15' e63s Wagon and my aux battery is in the trunk by the sub as well.
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