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Lost of sound system

Tiny
CALJOY
  • MEMBER
  • 2004 MERCEDES BENZ E320
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
What cause's message display ( Battery Protection convience functions temporariliy unavailable)
Tuesday, July 12th, 2011 AT 5:05 AM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
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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Tuesday, July 12th, 2011 AT 5:22 AM
Tiny
CALJOY
  • MEMBER
  • 2 POSTS
Both batteries have already been replaced
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Tuesday, July 12th, 2011 AT 5:30 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
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.
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Tuesday, July 12th, 2011 AT 10:54 PM

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