Where Is The Auxillary Battery Located On An 2010 E350?

75

Asked by Oct 17, 2016 at 02:24 PM about the 2010 Mercedes-Benz E-Class E 350 Luxury

Question type: Maintenance & Repair

I got a computer complaint to replace the Auxiliary Battery in my 2010 E350 Mercedes sedan. I CAN'T FIND IT!!! I've looked under the driverside dash.. not there, Passenger side trunk, Passenger under back seat, Passenger side under hood near the firewall. BIZARRE... how the dam thing isn't on a website or manual.. easy for someone to look up..  Help please.. I bought the battery.. about the size of a small motorcycle battery.. but don't know where it goes to replace.

8 Answers

107,945

Under the instrument cluster.

6 of 6 people found this helpful.
107,945

http://mbworld.org/forums/e-class-w212/520351-2010-e350-w212-aux-battery-replacement.html

7 of 7 people found this helpful.
Best Answer
75

Thank you JoeMom... I actually found this same page and took the two panels off myself.. but didn't see the dang battery.. Ill take another look this evening.. its like Houdini.. so irritating.. If I find it, I will let you know.. but seriously.. I looked and it didn't seem to be there.. maybe it is tucked against the wall or something... because looking into it.. looks like picture "4" where there is just an open cavern. Thanks.. Ill give it another look when I get home.

2 of 2 people found this helpful.
107,945

did you open the PDF in that thread that gave you the instructions on how to remove it ?

5 of 5 people found this helpful.
75

Joemom SUCCESS!!! It was stuck up inside against the outside wall under the dash. So take off bottom panel as best possible. Several electrical lines hanging around. Take off side dash panel. Unscrew big screw that holds up the battery cage. Slide battery out of battery cage and unplug. Then reverse all that with new battery. Success!! Crazy how little good clear info there is and how Mercedes in DALLAS/Plano was not helpful at all.

107,945

Glad you found it, good luck

2 of 2 people found this helpful.
75

All, good.. I just have a few things to do to make this car ready for sale. Shocking how hard it was to do this little thing.. I wish I could find other places to post the answer.. THANKS!

2 of 2 people found this helpful.

How did you get the side panel off? It is seated VERY firmly.

Your Answer

Add photo

Related Questions

E-Class

Looking for a Used E-Class in your area?

CarGurus has 19,845 nationwide E-Class listings starting at $1,500.

ZIP:

Search Mercedes-Benz E-Class Questions

Mercedes-Benz E-Class Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,170
#2 dandyoun
dandyoun
Reputation 1,930
#3 bobkat
bobkat
Reputation 1,410
View All

Related Models For Sale

Used Mercedes-Benz C-Class
592 Great Deals out of 23,279 listings starting at $1,995
Used Mercedes-Benz S-Class
139 Great Deals out of 5,969 listings starting at $2,000
Used BMW 5 Series
485 Great Deals out of 16,585 listings starting at $2,000
Used Mercedes-Benz CLS-Class
77 Great Deals out of 2,097 listings starting at $7,499
Used BMW 3 Series
1,029 Great Deals out of 31,428 listings starting at $1,000
Used Mercedes-Benz M-Class
207 Great Deals out of 5,727 listings starting at $2,500
Used BMW 7 Series
179 Great Deals out of 6,060 listings starting at $2,500
Used Mercedes-Benz SL-Class
48 Great Deals out of 2,722 listings starting at $4,500
Used Audi A6
126 Great Deals out of 6,166 listings starting at $2,488
Used Mercedes-Benz GL-Class
144 Great Deals out of 3,626 listings starting at $7,890
Used Mercedes-Benz CL-Class
22 Great Deals out of 513 listings starting at $3,300
Used Mercedes-Benz G-Class
23 Great Deals out of 1,266 listings starting at $19,995
Used Mercedes-Benz CLK-Class
37 Great Deals out of 1,213 listings starting at $2,000
Used BMW 6 Series
89 Great Deals out of 2,820 listings starting at $6,777

Used Cars For Sale

2015 Mercedes-Benz E-Class E 350 Luxury For Sale
32 Great Deals out of 571 listings starting at $26,580
2014 Mercedes-Benz E-Class E 350 Luxury For Sale
3 Great Deals out of 80 listings starting at $20,981

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.