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my 211 engine 271 year 2005. I have replaced the alternator and confirmed that both the main battery and auxilliary battery are charging. However, the red light battery warning wont go. Anyone had that?
 

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So it wont charge the batteries is that right ?. And the red light is on all the time yes. Did you replace the batteries with the right type AGM Absorbed Glass Mat type only . After this procedure you need to reset the system .See youtube video - put this in the search box on youtube Mercedes W211 Has Removed Two Batteries For Charging /How to Remove Battery Charging .
You need to do a reset to extinguish the red indicator on dash .
 

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Discussion Starter #3
So it wont charge the batteries is that right ?. And the red light is on all the time yes. Did you replace the batteries with the right type AGM Absorbed Glass Mat type only . After this procedure you need to reset the system .See youtube video - put this in the search box on youtube Mercedes W211 Has Removed Two Batteries For Charging /How to Remove Battery Charging .
You need to do a reset to extinguish the red indicator on dash .
Both batteries are charging. The problem is the battery light on the dashboard.
 

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