See also:

SPORT mode indicator light (AT models)
When the select lever is moved to the manual gate, the SPORT mode is selected and the indicator light illuminates. Refer to “SPORT mode”. ...

Tire chains
Tire chains cannot be used on your Impreza, WRX and STI because of the lack of clearance between the tires and vehicle body. ...

Vehicle Dynamics Control OFF indicator light (yellow)
• This light illuminates when the Vehicle Dynamics Control OFF switch is pressed (except STI). • This light illuminates when the Vehicle Dynamics Control mode switch is pressed for more than 2 second ...