2009 Toyota Tundra CrewMax Owners Manual - Page 261

2-4. Using other driving systems When VSC/TRAC/A-TRAC are operating Vehicles with multi-information display If the vehicle is in danger of slipping, or if the rear wheels (2WD models and 2WD mode on 4WD models) or all wheels (4WD mode on 4WD models) spin, the slip indicator flashes to indicate that VSC/TRAC/A-TRAC have been engaged. A buzzer (intermittent) sounds to indicate that VSC is operating. 2 When driving Vehicles without multi-information display If the vehicle is in danger of slipping, or if the rear wheels (2WD models and 2WD mode on 4WD models) or all wheels (4WD mode on 4WD models) spin, the slip indicator flashes to indicate that VSC/TRAC/A-TRAC have been engaged. A buzzer (intermittent) sounds to indicate that VSC is operating. 231