I've been getting this message when I turn the AC (occasionally), when I don't turn on the AC it doesn't appear. Checked the the alternator voltage and its fine. Could it be
this warning came on then i drove the car for about an hour and when i turned it on again the warning disappeared. anything to worry about? : r/mercedes_benz
Battery Alternator Visit Workshop Problem. | Electronics and Audio | MBClub UK - Bringing together Mercedes Enthusiasts
Battery alternator visit workshop Issue | Mercedes-Benz Forum
Battery alternator Visit Workshop — Mercedes-Benz C-class (W203), 1,8 л, 2005 года | визит на сервис | DRIVE2
Red battery message ( Visit workshop) - MBWorld.org Forums
453] Battery Malfunction Message - Please see first comment : r/SmartCar
Mercedes Battery & Alternator Check Via Secret Menu (Easy + Fast) - YouTube