Acura 2012 MDX - Manual (Page 375)

Some phones may send battery,
signal strength, and roaming status
information to HFL.
You will see ‘‘HANDSFREELINK’’
and the ‘‘ ’’ indicator on the audio
display when you operate HFL.
Bluetooth ® HandsFreeLink ® (Models without navigation system)
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11/08/29 10:08:20 12 ACURA MDX MMC North America Owner's M 50 31STX650 enu