My 2010 manual makes reference to brake assist both within the confines of PCS and one mention outside of it. So it seems it may be a standard feature. I have yet to experience it. I don't have PCS, but also haven't really had an emergency braking situation.
2-4. Using other driving systems
Driving assist systems
To help enhance driving safety and performance, the following systems
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.
■Multi Terrain 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, or in offroad
conditions (such as rough roads, sand and mud).
■Brake assist
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)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■Active TRAC (Traction Control)
Maintains drive power and prevents the 4 wheels from spinning when
starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
Helps prevent the vehicle from rolling backwards when starting on an
incline or slippery slope. The hill-start assist control only operate for 5 seconds
when engaged.
■VGRS (Variable Gear Ratio Steering)
Adjusts the wheel turning angle in accordance with the vehicle speed and
steering wheel movement.
■Pre-Collision System (if equipped)
P. 265
Safety systems such as the brakes and seat belts are automatically
engaged to lessen impact and injuries to occupants as well as vehicle damage
when the radar sensor detects an unavoidable frontal collision.
■Pre-collision seat belts (front seats only)
If the pre-collision sensor detects that a collision is unavoidable, the precollision
system will retract the seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or loses
control of the vehicle. (P. 94)
■Pre-collision brake assist
Applies greater braking force in relation to how strongly the brake pedal is
depressed.
■Pre-collision AVS
If the system determines that the collision is unavoidable, the operation of
AVS (P. 249) helps prevent the vehicle front from going down when
hard brakes are applied.
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