Mitsubishi MOTORS Shogun 2007 Owner's Manual page 276

Starting and driving
Accelerator pedal
While driving at the set speed, use the accelerator pedal to
reach your desired speed and then press the "COAST SET"
switch (B) and release the switch momentarily to set a new
desired cruising speed.
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To decrease the set speed
There are 2 ways to decrease the set speed.
"COAST SET" switch
Press and hold the "COAST SET" switch (B) while driving at
the set speed, and your speed will slow down gradually.
When you reach your desired speed, release the switch. Your
new cruising speed is now set.
To slow down your speed in small amounts, press the "COAST
SET" switch for less than about 1 second and release it.
Each time you press the "COAST SET" switch, your vehicle
will slow down by about 1.6 km/h (1 mph).
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