2004 Mercedes Benz E320 Repair Question
Topics covered: Battery, Alternator, Engine.
Mileage: 95,000 miles.
Mileage: 95,000 miles.
Asked on July 12, 2011
Lost of sound system
What cause's message display ( Battery Protection convience functions temporariliy unavailable)
Asked by CaljoyAnswer
Replied on July 12, 2011
Check the condition of the auxiliary battery first, then check the main if the auxiliary checks good. It's one or the other.
Replied on July 12, 2011
Both batteries have already been replaced
Replied on July 12, 2011
The message you mention pertains to an issue with the battery system. Using a multi-meter, make sure the alternator is putting out between 13.4 and 14.2 volts with the engine running and headlights turned on. If not, you have an issue with the alternator or regulator.