Mercedes-Benz W166 ML350 Auxiliary Battery Replacement

This video shows how I replaced the auxiliary battery on a 2013 ML350 Bluetec W166.

Depending on the trim level, the auxiliary battery is either a "small" (N000000004039) or "big" (A0049820008, A0019822708 now replaced by A 0009829608).

The "big" battery is actually a motorbike battery. It is an AGM 12V 12AH 200CCA.

[fedupdomer]

just did this today, plus the main battery under the seat. took all of 40 min for both and much of that time was gathering tools and getting organized. i dont know who in their right mind would take apart the whole back interior as first instructed! this method was super easy and didnt have to cut the carpet.

[rawirihinder]

Great video! I’ve watched a couple of other videos online and they take out when wheel, the floor panel and remove the entire side section. Your method is so much faster and easier.
I replaced the auxiliary in my 2014 ML250 over the weekend following your instructions and it made it so much easier. Thank you!

[ConciergeMed]

Thank you my friend, saved me on fitting costs by dealer! 👍👍👍

[rojheroo]

Thank you Ken for an excellent video...Ill change mine as I now have auxiliary battery malfunction on my ML350 with 214, 500 klm travelled,

[thunderning]

Thanks Ken, even a novice like me was able to follow along your instructions and I could change the auxiliary battery on my ML350 today!

[tpmbe]

Excellent video..thank you ...I'll do this following your Best Wishes

[astraltraveler]

very helpful, thanks. of course the most difficult part is the PULLING OF THE PANEL OUT OF THE WAY and how to do that with the 12v outlet and tie-down bar locked into place. but I have a 2014 and maybe they decided to make all this more difficult.

[johnhempton]

Thank you for your help, I was able to complete this task.

[IRFAN.Ç.]

Is there an third battery in the near of the mainbattery under the seat right side front? Thanks!

[Maddo_Aussie]

Ken thanks for the excellent video. How did you address the Kantana battery not having a threaded terminal post to screw the terminal lugs onto?

[DaveFury]

Being able to see this video would have been great. Lighting, folks. Look into it.

[IRFAN.Ç.]

Is there a way if measure the health without take it out?

[IRFAN.Ç.]

Do you need to do a learn by software after change? And if possible write the dimensions of the original battery. Thanks!

[suravarapuvijay]

hi Ken do we need to update the software after Replacing Aux Battery ? or just replacing is fine

[fotiotis]

Do you have tech the battery on the System or Not? That would be interest me;)

[victorialiu]

Where can I buy the battery? Mine is 2015 ML350. It looks like it's the same battery as yours.

[cesarbojorquez]

What problems you got before changing the battery?

[KKE]

Germans and their infinite wisdom. Did they have to make it so damn complicated. I will stick to my toyota. Life is easy in Japan