Ford Ranger Owner's Manual page 147

Electronic Sound Systems
Using the "TUNE" function
You can change the frequency up or down one increment at
a time by pressing and releasing either the left ( b ) or right
( a ) side of the "TUNE" button.
Manual tuning adjusts your radio to any allowable broadcast
frequency, whether or not a station is present on that
frequency. (See All About Radio Frequencies in this section.)
Using the "SEEK" function
This feature on your radio allows you to automatically select
listenable stations up or down the frequency band. Press the
right ( a ) side of the "SEEK" button to select the next
listenable station up the frequency band. Press the left ( b )
side of the button to select the next listenable station down
the frequency band. By holding the button down, listenable
stations can be passed over to reach the desired station.
Using the "SCAN" function
Pressing the "SCAN" button will begin the scan mode up
the frequency band, stopping on each listenable station for
approximately five seconds.
To stop the scan mode on the presently sampled station,
press the "SCAN" button again.
Setting the Station Memory Preset buttons
Your radio is equipped with 6 station memory buttons.
These buttons can be used to select up to 6 preset AM
stations and 12 FM stations (6 in FM1 and 6 in FM2).
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