Using Audio System; Am/Fm Stereo Cassette - Mercury 1999 Mountaineer Owner's Manual

Controls and features
To help avoid personal injury, please read and understand the
limitations on the reverse sensing system described above.
Reverse sensing is only an assist for some (generally large and fixed)
objects. It is the drivers responsibility for ensuring that their path is
clear when operating the vehicle.
To help avoid personal injury, always use caution when in
reverse and when using the reverse sensing system.
USING YOUR AUDIO SYSTEM

AM/FM stereo cassette

VOL - PUSH ON
AM
BASS
FM
SEEK
TUNE
1 2
34
FM1
TREB
SCAN
EJ
3 4
CLK
ST
BAL FADE
TAPE
AMS
SIDE 1 - 2
REW FF
5 6