E55 battery problems yet again
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Joined: Apr 2015
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From: SoCal
2024 c300 , 2006 E55, 2005 e320, 2007 gl450, 2025 glc300, 2025 e450
E55 battery problems yet again
Hey everyone, yet again another 211 battery problem. In May of this year I replaced the aux battery, rear battery (oem) and the (oem) alternator. All was well, but I have noticed that after 2 days or more of sitting the red battery light comes on, granted it’s kind of cold here in the 50’s. After driving the car and cycling the keyes it charges up and goes away. The car non started voltage after sitting a day is 12.2 and idling is 14.0 so that seems fine. As of now I have hooked the main battery to a 12v trickle charger to see if it does anything. Will plan to drive it later today or tmre.
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'99 and '05 E55 AMG
You have a bad module that is not going to sleep and it is draining your battery. Multiple posts on this or you can consult WIS. You're going to have to take it from here....
Thread Starter
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,421
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From: SoCal
2024 c300 , 2006 E55, 2005 e320, 2007 gl450, 2025 glc300, 2025 e450
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Joined: Mar 2019
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From: Snohomish Co.
E55 AMG
[QUOTE=AMG__POWER;7933733I have noticed that after 2 days or more of sitting the red battery light comes on, g[/QUOTE]
Check the battery voltage after 2 days, and see what it is. 11.9-12.1 V should be fine. Look at the voltage while cranking. 10V and above is OK. Where did you get the alternator?
Check the battery voltage after 2 days, and see what it is. 11.9-12.1 V should be fine. Look at the voltage while cranking. 10V and above is OK. Where did you get the alternator?
Thread Starter
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,421
Likes: 160
From: SoCal
2024 c300 , 2006 E55, 2005 e320, 2007 gl450, 2025 glc300, 2025 e450
