Driving Assist Systems - Toyota 4runner 2009 Owner's Manual

4RUNNER_U.book Page 188 Wednesday, July 30, 2008 3:00 PM
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.
ABS (Anti-lock Brake System)
n
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
n Brake Assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
n VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces.
TRAC (Traction Control)
n
Maintains drive power and prevents the rear wheels (2WD models and
H2 mode on Multi-mode 4WD models) or all wheels (4WD models
except on L4 mode) from spinning when starting the vehicle or acceler-
ating on slippery roads.
A-TRAC (Active Traction Control) for L4 mode on 4WD mod-
n
els (vehicles with the A-TRAC switch except when the cen-
ter differential lock is locked)
Maintains drive power and prevents the all wheels from spinning when
starting the vehicle or accelerating on slippery roads.
n Hill-start assist control (if equipped)
Helps prevent the vehicle from rolling backwards when starting on an
incline or slippery slope. It operates for approximately 5 seconds at
maximum.
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