Mercedes GLK Auxiliary Battery Malfunction: Where is it? How to Fix it?

Mercedes GLK Auxiliary Battery Malfunction: Where is it? How to Fix it?

Here is a good example of why you don’t want to blindly take someone’s mechanical advice on the internet. The GLK 350 battery and the GLK 250 battery are totally different and housed in totally different locations!

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Joseph Cruz says:

Need this guys help RN!!! Please

James Rosser says:

Hopefully Kent and his crew will see their way clear to produce more videos on the later models for those of us that find them to be well engineered transportation. Professional advice of Kents' caliber is hard to find and always interesting and informative.

Dulce Del Salto says:

Un saludo desde España,

Geoff Pranger says:

This has to be for the later GLKs with the start/stop feature. I have a 2011 GLK 350. It does not have the aux battery because it does not have the Start/stop. Its kind of strange to think of these cars as "ageing". But, the oldest of these is now 14 years old!

Yves Alepin says:

Very instructive video! Many thanks! I own a 2014 GLK250 new. This will help me fixing the aux battery when it will be the time! BTW, this is the most reliable car I ever had!

Daryl Walford says:

Hi Kent, Thanks for another very informative video. People complain that batteries for MB are expensive but I can't complain, the original battery in my 2002 C240 lasted 18yrs, I couldn't believe my eyes when I removed it to fit the new battery, read the date code and saw the original MB decals on the old battery.

MrCoggins Garage says:

Kent Thankyou very much for showing us this will save many people a great deal of stress.

Aly Jaafar says:

Professor Mr. Kent Bergsma we love you, greetings from Belgium

Arto K says:

What is the auxiliary battery for? How many years does it last before it has to be replaced?

OmegaBahn says:

Good Lord… Thank you for the continuous education to the masses.

H danielle says:

Thanks ken , you really helped me with my 250 glk …many thanks from egypt

manar shanableh says:

One of my favorite channels on YouTube and as usual good informations . Keep it up

Andrew says:

Wow that is annoying to get to.

Kent, on the forums you forums you have seen, have you seen any explanation as to why this happens? On different Mercedes Facebook groups I am part of, people show this issue and it seems to be a fairly common issue. I wonder what the issue is?

james adams says:

Glad to see you’ve upgraded to the modern era Kent! And of course it’s a diesel! Classic Kent Bergsma! I just love it. 

As much as I adore the iconic W126, these are leaps and bounds more refined and have shown how far Mercedes’ has come since the 70s and 80s. I will say Mercedes’ chose one heck of a place to store these batteries. Why not just use a bigger amp hour battery I always said. Nonetheless well done and it’s nice to finally have some professional documentation as to where these little suckers are hidden. It’s really a beautiful truck I’d say. Thanks for all you do!

wayne p says:

So do you also need to use a dealer level scan tool to reflash a bunch of modules so everything works again.

Justinian Yi says:

That’s a heck of a location for a battery. Wonder what a dealer’s labor rate is for this replacement job. Because the one near me wants $550 to change a main battery in a 2013 C300. And that’s under the hood.

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