CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

Auxiliary Battery Malfunction 2009 W216

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Old Mar 26, 2019 | 04:23 AM
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2009 Mercedes-Benz CL-63 AMG
Auxiliary Battery Malfunction 2009 W216

Hello,

I have a 2009 Mercedes CL-63 (W216) and it showed a message "Auxiliary Battery Malfunction." Where is this auxiliary battery located and do I have another battery inside the truck area?
Thank you for your support in this matter.
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Old Mar 27, 2019 | 08:07 PM
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Originally Posted by Dajuana67
Hello,

I have a 2009 Mercedes CL-63 (W216) and it showed a message "Auxiliary Battery Malfunction." Where is this auxiliary battery located and do I have another battery inside the truck area?
Thank you for your support in this matter.
Yes.....................it's located behind the rear seat. You have to access via removing the panel in the trunk area.
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Old Mar 28, 2019 | 11:11 AM
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Is there another small (auxiliary battery) under the drivers side dashboard too?
Thank you.
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Old Mar 28, 2019 | 01:29 PM
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There's a small starter battery under the hood passenger side.
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Old Mar 28, 2019 | 03:54 PM
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The one under the hood (starter battery is a regular size MB battery. I seen on youtube for an S-63 AMG there is a very tiny 12 volt battery under the dashboard drivers side door panel. I'm just wondering if ny 2009 CL-63 AMG has three batteries; starter (under the hood), consumer (in the trunk behind the rear seats), and one under the drivers-side panel/dashboard.

Thank you Xabo for letting me know the location of the consumer battery in the trunk.
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Old Mar 28, 2019 | 04:20 PM
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Here's some info i found.................HTH

https://www.justanswer.com/mercedes/...tery-need.html
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Old Mar 29, 2019 | 04:07 AM
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Thank you Xabo for your assistance in this matter. I will look into this over the weekend.
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Old Apr 18, 2019 | 01:16 PM
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What did you find.................
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Old Apr 28, 2019 | 07:47 AM
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I removed the tire cover and back seat cover inside the trunk and found out that my auxiliary battery is NOT inside the trunk. It must be on the drivers side under the foot panel.
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Old Apr 29, 2019 | 09:10 AM
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From: New Orleans
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Does any one know if will my memory be saved if I remove disconnect the negative terminal form the Starter Battery (Engine Bay) first, then remove the auxiliary battery (Part # A00000 0004039) from under the drivers side dash board ? I just want to do this right the first time. Thanks for all your help with my "auxiliary battery malfunction" problems.
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Old Apr 30, 2019 | 10:02 AM
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From: New Orleans
2009 Mercedes-Benz CL-63 AMG
I purchased a new auxiliary battery from the dealership (A0000000004029) and replaced it. My W216 auxiliary battery was located under the driver's side dashboard (outside panel). It took me 30 minutes and as is well. I had to disconnect the NEG terminal from the starter battery before I replaced the auxiliary battery..
Thanks to everyone for your support.
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Old Oct 5, 2019 | 08:16 PM
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S63 AMG 2011
S63 AMG 2011 Auxiliary Battery

Does anybody know where is location of Auxiliary Battery for S63 AMG 2011?
Its not in Driver side behind Fuse Box
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