Driving Assist Systems - Toyota 2009 Tundra Owner's Manual

2-4. Using other driving systems

Driving assist systems

To help enhance driving safety and performance, the following sys-
tems operate automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavily when operating the vehicle.
n ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
Brake Assist
n
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
VSC (Vehicle Stability Control)
n
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces.
TRAC (Traction Control) for 2WD models and 2WD mode on
n
4WD models
Maintains drive power and prevents the rear wheels from spinning
when starting the vehicle or accelerating on slippery roads.
A-TRAC (Active Traction Control) for 4WD mode on 4WD
n
models
Maintains drive power and prevents the all wheels from spinning when
starting the vehicle or accelerating on slippery roads.
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