Lexus GS 450h2011 Manual page 322

3-3. Using the audio system
Status display
You can check such indicators as signal strength and battery charge on
the screen.
Indicators
Connection status
Battery charge
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GS_HV_U (OM30C14U)
May 21, 2010 2:41 pm
Connection status
Battery charge
Conditions
Blue: Good
Yellow: Bad
: Not connected
Full Empty