Speed-Increase Setting

Switch "ON" the "CRUISE" (MAIN) switch.
Set to the desired speed, above approximately 40 km/h (25 mph).
Push the auto-cruise control switch in the direction of the arrows

Fig 1: Pushing Auto-Cruise Control Switch - Speed-Increase Setting
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Check to be sure that acceleration continues while the switch is held, and that the speed at the time it was released becomes the constant driving speed.
NOTE: Acceleration can be continued even if the vehicle speed has passed the high-speed limit [approximately 200 km/h (124 mph)]. But the constant driving speed when the auto-cruise control switch is released will be recorded as the high-speed limit.