Mechanics

LOST OF SOUND SYSTEM

2004 Mercedes Benz E320 • 6 cylinder 2WD Automatic • 95,000 miles

What cause's message display ( Battery Protection convience functions temporariliy unavailable)
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Caljoy
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.
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Rivermikerat
Jul 12, 2011.
Both batteries have already been replaced

Tiny
Caljoy
Jul 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.

Rivermikerat
Jul 12, 2011.

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