To change the cruising speed

See also:

If the light is blinking
If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you sho ...

SI-DRIVE indicator light (STI)
1) Intelligent (I) mode 2) Sport (S) mode 3) Sport Sharp (S#) mode This light indicates the current SI-DRIVE mode. For details of SI-DRIVE mode, refer to “SIDRIVE (STI)”. ...

Sporty, Spacious and Versatile Interior
New for 2011, the WRX STI interior is finished in black and silver to highlight its sporty design. Trim panels, the steering wheel air bag cover and steering wheel switches are now dark cast metal ...