Mercedes Auxiliary Battery Malfunction **EASY FIX!**

Have the Mercedes Auxiliary Battery Malfunction Fault?
If so, you need to watch this video now! We will describe everything you need to fix this fault.
All you need is a new auxiliary battery! We used the A0009819608 Battery on this 2016 Mercedes to fix the fault. Usually, after 4-5 years, the auxiliary battery will reach the end of its life.
To remove the battery, all you need is a 10mm ratchet and socket.

[@UsefulVids]

*OTHER REVIEWS TO WATCH*:
Ford:
1997-2004 F-150 Buyer's Guide: th-cam.com/video/eaKffURoFQY/w-d-xo.html
2004-2008 F-150 Buyer's Guide: th-cam.com/video/duNWJA7m63s/w-d-xo.html
2009-2014 F-150 Buyer's Guide: th-cam.com/video/3IpC-mHY0xM/w-d-xo.html
1998-2011 Ranger Buyer's Guide: th-cam.com/video/fELUyrKY1U4/w-d-xo.html
1994-2004 Mustang Buyer's Guide th-cam.com/video/TMKyjs1F5yU/w-d-xo.html
2005-2014 Mustang Buyer's Guide: th-cam.com/video/lrfpgzcgLI8/w-d-xo.html
1992-1996 Bronco Buyer's Guide: th-cam.com/video/sm3aMyix4tk/w-d-xo.html
Toyota:
1996-2002 3rd Gen 4runner Buyer's Guide: th-cam.com/video/6Oorr2Ymob0/w-d-xo.html
2003-2009 4th Gen 4runner Buyer's Guide: th-cam.com/video/zk2CKLxm6Dg/w-d-xo.html
2010-2022 5th Gen 4runner Buyer's Guide: th-cam.com/video/aqqPAwdqF9o/w-d-xo.html
1995-2004 1st Gen Tacoma Buyer's Guide: th-cam.com/video/WtyhiOD8Jm4/w-d-xo.html
2005-2015 2nd Gen Tacoma Buyer's Guide: th-cam.com/video/9ZOhD0KU_gA/w-d-xo.html
2000-2006 1st Gen Tundra Buyer's Guide: th-cam.com/video/9pIyUcFGf4c/w-d-xo.html
2007-2020 2nd Gen Tundra Buyer's Guide: th-cam.com/video/fhH4UnFvJuI/w-d-xo.html
1991-1997 Land Cruiser Buyer's Guide: th-cam.com/video/8dnMu2WzYRo/w-d-xo.html
Chevy:
1968-1972 Chevelle Buyer's Guide: th-cam.com/video/G1AXfLXwb9o/w-d-xo.html
1972-1987 Square Body Buyer's Guide: th-cam.com/video/78oolTruPdQ/w-d-xo.html
1988-1998 Silverado /Sierra Buyer's Guide: th-cam.com/video/pLs-KWSucjo/w-d-xo.html
1994-2004 S10 Buyer's Guide: th-cam.com/video/CmfgCOxW6XA/w-d-xo.html
1999-2007 Silverado / Sierra Buyer's Guide: th-cam.com/video/LmN6_ubzyuI/w-d-xo.html
2000-2006 Tahoe/Suburban Buyer's Guide: th-cam.com/video/I15DfJBly1c/w-d-xo.html
2007-2013 Silverado / Sierra Buyer's Guide: th-cam.com/video/_UXTc5BGxsM/w-d-xo.html
Jeep:
1984-2001 XJ Cherokee Buyer's Guide: th-cam.com/video/YoNrkxEew4Y/w-d-xo.html
Mercedes:
W211 E-Class Buyer's Guide: th-cam.com/video/QpplQTp2DSQ/w-d-xo.html
W212 E-Class Buyer's Guide: th-cam.com/video/IYZSnLzdNp8/w-d-xo.html
W212 Best E-Class(?): th-cam.com/video/UNF5piFLS4U/w-d-xo.html
W204 C-Class Buyer's Guide: th-cam.com/video/BtCbbrsQQ-Y/w-d-xo.html
W205 C-Class Buyer's Guide: th-cam.com/video/CHVDM7AfKfM/w-d-xo.html
W222 S-Class Buyer's Guide: th-cam.com/video/5E9U0zEkWdg/w-d-xo.html
Mazda:
1990-1997 MX-5 Miata: th-cam.com/video/KjNB-LbkNSY/w-d-xo.html
Nissan:
2004-2015 Titan Buyer's Guide: th-cam.com/video/2VFdZeEyGnA/w-d-xo.html
HardBody Pickup Truck Buyer's Guide: th-cam.com/video/-mRVMByFh_I/w-d-xo.html
2005-2021 Frontier Buyer's Guide: th-cam.com/video/ES35uwDBhPY/w-d-xo.html
Subaru:
2014-2018 Subaru Forester SJ Buyer's Guide: th-cam.com/video/Ir694Wah9PA/w-d-xo.html
Lexus:
2001-2005 IS300 Buyer's Guide: th-cam.com/video/mtxoUg0zthw/w-d-xo.html
Porsche:
G-Series 911 Guide: th-cam.com/video/j7KiZbfOCpM/w-d-xo.html
1999-2005 911 996 Buyer's guide: th-cam.com/video/rvdMzS8XdXk/w-d-xo.html
2010-2016 Panamera Buyer's Guide: th-cam.com/video/3giueysuXdU/w-d-xo.html

[@skipfogarty8780]

Fairly straightforward, thanks for the tips. Hardest part was putting the plastic tray-panel back in on the right. New battery fixed the problem. Oh, it was hard to find the righthand bolts on that tray, because there's a removable liner that hides them. Baffled me for the first 10 minutes.

[@hallga007]

Disconnect the negative terminal first!

[@arunp1783]

Very easy battery replacement. Takes about 10 minutes and as stated, a ratchet with a 10mm socket will do the trick. You'll want to call ahead to your local automotive parts shop to see if they have it in stock. In my case, both O'Reilly's and AutoZone only had 1 auxiliary battery in stock, both at the same price. That said, you can actually do the swap in the parking lot in minutes and have the shop take your old battery when done.

[@nickemens7810]

Even easier fix, fiddle with the connectors and then try the car again. Sometimes the battery malfunction disappears. I did this two years ago and it’s been fine since.

[@xxx-kash8713]

I’m getting the same message “auxiliary battery malfunction” on my 2013 CLA45 it won’t let me switch from eco mode to sports or manual mode and my parking sensors aren’t working, going to replace the battery tomorrow hopefully that solves the issue

[@geoffreyboatengjr6773]

Did it work?

[@aimeehardin1299]

Did it work and solve your issues?

[@xxx-kash8713]

Unfortunately no it had nothing to do with the battery

[@Herendill]

@@xxx-kash8713 can you tell us more? what was the issie then?

[@solson736]

Will a bad auxillary prevent my car from starting its a 2014 e350

[@E_B-]

Either the auxiliary or the Esl steering lock which requires an emulator smh 🤦🏿‍♂️ i dont lnow why NhtSB dont recall it

[@nguyenfamily4036]

How 2007 Mescedes SL550 ?

[@89garciaj]

I changed my auxiliary battery not even a year ago and I’m again getting the malfunction message

[@M.Kamraan]

It may be the connectors?

[@MrSamuel8099]

Changed the battery in the trunk for my 2016 E350, still getting the malfunction message

[@bleuprincess2]

What are you going to do now?

[@stephenrees3502]

Possible capacitor issue. I think it's located next to the small battery.

[@MrSamuel8099]

@@stephenrees3502 dealer sold me bad battery

[@rubenperez1481]

@@MrSamuel8099 did it go off after you got the new battery or was it the capacitor?

[@MrSamuel8099]

@@rubenperez1481 it went away when I got a good battery

[@ProudSalvadorianGuy2008]

Is this guy dead?