Ford Navigator2005 Owner's Manual page 460

Entertainment Systems
Speed sensitive volume (if equipped): Automatically changes the
volume slightly with vehicle speed to compensate for road and wind
noise. The recommended level is 1–3. Level 0 turns the speed sensitive
volume off and level 7 is the maximum setting.
To engage the speed sensitive volume feature, press and hold the volume
control for five seconds (with the radio on). Press SEL to
increase /decrease
will appear in the display.
17. TAPE: Press to begin tape play.
Press during fast forward or rewind
to stop fast forward or rewind
function.
18. CD door: Insert the disc with the playing side down and printed side
up.
CD units are designed to play commercially pressed 4.75 in
(12 cm) audio compact discs only. Due to technical
incompatibility, certain recordable and re-recordable compact
discs may not function correctly when used in Ford CD players.
Irregular shaped CDs, CDs with a scratch protection film
attached, and CDs with homemade paper (adhesive) labels should
not be inserted into the CD player. The label may peel and cause
the CD to become jammed. It is recommended that homemade
CDs be identified with permanent felt tip marker rather than
adhesive labels. Ball point pens may damage CDs. Please contact
your dealer for further information.
19. Tape door: Insert the tape facing the right.
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2005 Navigator (nav), Owners Guide (post-2002-fmt) (own2002),
Market: USA_English (fus)
volume compensation levels. The selected level