Battery Removal Question

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Jul 3, 2015 | 12:12 PM

CA Bob

Thread Starter

Junior Member

Joined: Aug 2010

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2011 glk 350

Battery Removal Question

I'm planning on replacing the battery in my 2011 GLK before going on a trip. Looking under the hood there is a black plastic box mounted above the battery. To remove this box is there anything more than 3 Torx screws and a cable tie holding it in place?

TIA,
Bob

Jul 5, 2015 | 10:15 PM

mjhawkins2346

Senior Member

Joined: Nov 2002

Posts: 334

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From: Northern California

2016 GLE300d 4Matic

Just some clips holding the airbox on. It's up to you about replacing the battery but these are expensive sealed AGM (Absorbed Glass Mat) or starved electrolyte batteries that are good for a very long time. 5 years is not unusual. MY '10 GLK350 has the original battery I tested last month and it passed with flying colors. Don't try and put a regular flooded cell in the car. The battery costs from $175 to $275 depending on where you buy it. Why do you think it needs replacing?

Jul 6, 2015 | 09:57 AM

CA Bob

Thread Starter

Junior Member

Joined: Aug 2010

Posts: 21

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2011 glk 350

mjhawkins2346,

Thanks for the input. The battery is not holding a charge like it should when it sits unused for a week or two. NAPA has an AGM replacement battery for just under $180. I should have some free time next week to replace it.

Jul 6, 2015 | 03:38 PM

bop11

Super Member

Joined: Aug 2011

Posts: 861

Likes: 38

From: Philly area

350 GLK, C280

You should clip a 12 volt supply to the leads before removing the battery to save all settings. Windows, roof, radio seats etc.

Jul 6, 2015 | 06:04 PM

CA Bob

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Junior Member

Joined: Aug 2010

Posts: 21

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2011 glk 350

bop11,

Thanks. I picked up a "settings keeper" that plugs into the cigarette lighter that claims to do that.

Bob

Jul 7, 2015 | 05:31 PM

bop11

Super Member

Joined: Aug 2011

Posts: 861

Likes: 38

From: Philly area

350 GLK, C280

You may need the key on for the settings keeper to work. I have a radar detector wired to the back of one of the 12V cigarette lighter plugs and it goes on and off with the key.