WTF DOES THIS MEAN????????
Thread Starter
Senior Member
Joined: Aug 2008
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From: Riverwoods, Il
2005 E55 AMG
Oh snap. I'm hoping it's just low voltage in one of the batteries. It went away after driving awhile. The car sat a while with out being started so may have just got low.
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From: NY
2014 E550; 2003 E500
I got the same message. I didnt drive it for about a week. Went shopping for stuff and no problems and no error messages. I think it's just that it sat or the rear battery will need replacing soon.
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From: 50 Acres in North Carolina
Depends on the day...
Batteries will suffer damage when discharged beyond 25% of their storage capacity. At 50% they have suffered greatly. Not a good idea to let them get to this stage of discharge unless you have enough disposible income to replace the batt's. I keep a battery tender on mine when it going to sit undriven for any amount of time.
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From: Louisiana
03 E500 and Corvette
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From: 50 Acres in North Carolina
Depends on the day...
Thread Starter
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From: Riverwoods, Il
2005 E55 AMG
So I fixed it by topping of the 6 cells with distilled water and slapping a trickle charger on it over night. Started up the next day and it didn't come on. Fyi each cell needed 2/3 cup water to top off. Make sure the drain tube is attached properly because when on the trickle charger some may boil over.
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Joined: Jun 2009
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From: Northern Virginia
2006 E320CDI
So I fixed it by topping of the 6 cells with distilled water and slapping a trickle charger on it over night. Started up the next day and it didn't come on. Fyi each cell needed 2/3 cup water to top off. Make sure the drain tube is attached properly because when on the trickle charger some may boil over.
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,499
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
It should not be common on a W211, these are supposed to come from the factory with AGM (sealed) batteries. If you open the cap, the battery is gone. Perhaps the cars you refer have the AGM battery replaced with an ordinary one (which is not good).
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From: 50 Acres in North Carolina
Depends on the day...
I thought about that when I posted, but figured if there was one that somebody would jump in. Thank you DB, I stand corrected. So apairently he will have to put a tender on both of the batteries to get the desired results?
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From: Louisiana
03 E500 and Corvette
So I fixed it by topping of the 6 cells with distilled water and slapping a trickle charger on it over night. Started up the next day and it didn't come on. Fyi each cell needed 2/3 cup water to top off. Make sure the drain tube is attached properly because when on the trickle charger some may boil over.
I think you will still need a battery. But what do I a know anyway. ??
Thread Starter
Senior Member
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From: Riverwoods, Il
2005 E55 AMG
Stock Mercedes battery made in Spain. I may have added a little too much water that's why a little drained out of the drain tube when it was on the charger. No return of the "workshop light" so far and the battery seems fine.
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From: Earth
2012 W212 | 2016 W205
Not sure if this has been stated above as i CBF reading.
But check the SBC Aux battery under the hood, when thats about to fail that CHECK BATTERY warning light comes on, and if that batterys low, it will drain and cause errors on the 2nd battery in the boot.
But check the SBC Aux battery under the hood, when thats about to fail that CHECK BATTERY warning light comes on, and if that batterys low, it will drain and cause errors on the 2nd battery in the boot.
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From: Riverwoods, Il
2005 E55 AMG
Wow a few of you guys must not wrench on your own rides, one of you is in Europe so that may be the reason why you have a water less battery. Here are a few pics of both of my stock batteries. Both require distilled water. I topped them both off, gave them full charges on the trickle charger and all is well now. No need to buy a battery quite yet.
Also be sure to clean up the battery posts and inside the terminals with one of those battery post brushes before reconnecting. FYI the main battery in the trunk took 3 days to be fully charged with the trickle charger. I don't like the idea of having the aux battery (water) right under the cabin filter. If it sulfates those fumes will be sucked right in to the cabin lol. Going to try and find an optima type that will fit there.
Also be sure to clean up the battery posts and inside the terminals with one of those battery post brushes before reconnecting. FYI the main battery in the trunk took 3 days to be fully charged with the trickle charger. I don't like the idea of having the aux battery (water) right under the cabin filter. If it sulfates those fumes will be sucked right in to the cabin lol. Going to try and find an optima type that will fit there.
Last edited by GRAFH; Oct 23, 2011 at 11:49 PM.
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From: Sleepy Hollow, IL
65 Chevelle Wagon w/ C5 frame, 08 ML63, 04 S600, 04 E55,(sold) 00 ML55,(sold) 98 C43-55K Swap
The battery is the same glass mat style battery as a optima. optima's are just wound in stead of flat panels. the mb batteries are sealed so no worries of any fumes. your best bet is a oem battery to keep the light off
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Senior Member
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From: Riverwoods, Il
2005 E55 AMG
Wow, did you read this thread? Or look at the photos? It's obvious from the photos that the stock batteries are not sealed and require water. Also I stated I topped both batteries off with water. Also I don't need new batteries since I fixed the problem with water and a trickle charger.
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From: NS
2017 GLC43 'AMG'
It might be a case of YMMV.
The big battery in the trunk of my car is more-or-less sealed. I think that it might (?) have caps under the big battery top decals, but it's obviously intended to be maintenance-free. Adding water, assuming it's possible, would make the battery in my car extremely ugly - with torn off decals.
The last time I added water to a car battery would have been in the 1970s.
The big battery in the trunk of my car is more-or-less sealed. I think that it might (?) have caps under the big battery top decals, but it's obviously intended to be maintenance-free. Adding water, assuming it's possible, would make the battery in my car extremely ugly - with torn off decals.
The last time I added water to a car battery would have been in the 1970s.
Thread Starter
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From: Riverwoods, Il
2005 E55 AMG
WOW 
Do you see the 6 white caps on top of the white battery? Those are the caps for the cells. They unscrew with a butter knife. Doesn't get an easier and you won't mess up any stickers The aux battery just has one large strip cap that comes off with a small screwdriver.
Do you see the 6 white caps on top of the white battery? Those are the caps for the cells. They unscrew with a butter knife. Doesn't get an easier and you won't mess up any stickers The aux battery just has one large strip cap that comes off with a small screwdriver.
