CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

Whats your battery life when not driving??

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Old Apr 24, 2014 | 08:19 PM
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Whats your battery life when not driving??

Im wondering how long does your battery last when you park your CLs.

I noticed if i park my car in the garage it will not start after a week of sitting. I have to charge the battery than everything goes back to normal. This dosen't seem normal and I'm curious if this happens to anyone else. This gets annoying since you need to break into the trunk and force it open to access the battery.

if i start the car daily the battery never dies so keeping that in mind there must be something draining my battery or it could be time for a new battery.

any help is appreciated

thanks
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Old Apr 26, 2014 | 08:52 AM
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Maybe you should test your battery. Probably just getting weak.
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Old Apr 27, 2014 | 12:53 PM
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Originally Posted by TwinTurboTim
Maybe you should test your battery. Probably just getting weak.
will do

thanks
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Old Apr 27, 2014 | 01:33 PM
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Do you have a lowering module?
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Old Apr 27, 2014 | 01:39 PM
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Originally Posted by OCKlasse
Do you have a lowering module?
i lowered it via the Mercedes Star program
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Old Apr 27, 2014 | 01:50 PM
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Nevermind then. The V2 in particular draws a lot of power.
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Old Apr 27, 2014 | 02:02 PM
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The short answer: buy and deploy a battery trickle charger.

The oem charging systems are NOT designed to bring the battery back to 100%. Further it is wishful thinking that our cars LOADED with electronic do dah's (being a technical term) do/will not draw current when OFF. This does not even take into account further custom electronics, or individual "customized" current draw !!

Last edited by Rdub; Apr 27, 2014 at 04:12 PM.
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Old Apr 27, 2014 | 03:33 PM
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mine alllllllllmost didn't start after a week or so of sitting, buddy who used to own a CL had same problem. we both run V2 lowering mod's.
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Old Apr 28, 2014 | 12:01 PM
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Originally Posted by Rdub
The short answer: buy and deploy a battery trickle charger.

your right, i been using a trickle charger
i just thought the battery should last without any help

The oem charging systems are NOT designed to bring the battery back to 100%. Further it is wishful thinking that our cars LOADED with electronic do dah's (being a technical term) do/will not draw current when OFF. This does not even take into account further custom electronics, or individual "customized" current draw !!

Originally Posted by Blkvip
mine alllllllllmost didn't start after a week or so of sitting, buddy who used to own a CL had same problem. we both run V2 lowering mod's.
Originally Posted by OCKlasse
Nevermind then. The V2 in particular draws a lot of power.
what battery are guy guys running? is there a specific one i should get i was thinking to replace my battery just incase plus its already almost 2 years old.
thanks for all the help by the way
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Old Apr 28, 2014 | 02:35 PM
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Unless you have a bad cell (normally statistically rare); with the trickle charger, it would not be unreasonable to expect a minimum of 4 years. Most of mine are diesel so I would normally recommend OEM (specified for greater current draw) . In the gasser case, still oem, but you have a greater latitude.

Last edited by Rdub; Apr 28, 2014 at 02:37 PM.
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Old Apr 29, 2014 | 04:37 PM
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If you have an original MB battery you should get at least 5 years out of it. I would buy a CTEK maintainer, charge it up completely and then disconnect it. If the car won't start again after a week of sitting, then you have something draining the battery. I had the same problem with my CL and it turns out there was something wrong with the heated mirror and it was draining the battery.

Would you be able to share how you lowered the car using star?? I tried once, but failed.
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Old Apr 29, 2014 | 05:49 PM
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Buy an Odyessy (not optima) battery when you replace yours. Not cheap, but why would you go cheap on a battery for a. CL.
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Old Apr 29, 2014 | 09:20 PM
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Originally Posted by MagCL
If you have an original MB battery you should get at least 5 years out of it. I would buy a CTEK maintainer, charge it up completely and then disconnect it. If the car won't start again after a week of sitting, then you have something draining the battery. I had the same problem with my CL and it turns out there was something wrong with the heated mirror and it was draining the battery.

Would you be able to share how you lowered the car using star?? I tried once, but failed.
thanks for the advice

and about the lowering, i actually took it to one of my buddies that owns the Mercedes Star program (he is also a member on this forum) and together we took our time and dropped it. I use the "raise" button when going over speed bumps or whenever its needed since I'm riding pretty low.

Originally Posted by Dr Matt
Buy an Odyessy (not optima) battery when you replace yours. Not cheap, but why would you go cheap on a battery for a. CL.
I will look into the Odyessy as my next battery, hopefully i can find it in Canada

Originally Posted by Rdub
Unless you have a bad cell (normally statistically rare); with the trickle charger, it would not be unreasonable to expect a minimum of 4 years. Most of mine are diesel so I would normally recommend OEM (specified for greater current draw) . In the gasser case, still oem, but you have a greater latitude.
thanks for the advice
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Old Apr 30, 2014 | 03:23 AM
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I think it needs to be the AGM battery I know they sell it at crappy tire for $199 if you need more help call me tomorrow !
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Old Apr 30, 2014 | 12:39 PM
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Originally Posted by benz_addict
I think it needs to be the AGM battery I know they sell it at crappy tire for $199 if you need more help call me tomorrow !
respect fam
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Old May 1, 2014 | 10:06 AM
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I heard if you lock the doors, power will be reduced while sitting up.. I use a MB bat and can sit for a month, with no issues. I usually drive the car once a week though.
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Old May 1, 2014 | 01:52 PM
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Originally Posted by Exotic-metal55
I heard if you lock the doors, power will be reduced while sitting up.. I use a MB bat and can sit for a month, with no issues. I usually drive the car once a week though.
thanks for the tip

just wondering how much do the MB batteries go for and is there a real advantage besides the name brand
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