BENDIX BW2489 User Manual download pdf (Page 8)

Yaw Control

What Is Yaw Control?

Yaw Control is a feature of the Bendix

ESP

stability system-equipped

vehicles that reduces the risk of jackkning and other loss of control situations.

If a vehicle’s tires start to slide during a turn, Yaw Control counteracts the

tendency of that vehicle to spin (or “yaw”), thereby reducing the risk of a

jackknife or other loss of control. Many factors, including road conditions, load

distribution and driving behavior, can contribute to the development of a spin.

Spins occur where either: (a) the rear wheels begin to lose their grip on the

road (which could lead to a jackknife when towing a trailer), or (b) the front

wheels begin to lose their grip, reducing a vehicle’s ability to respond to the

driver’s steering inputs.

Yaw Control continually monitors the direction in which you are steering the

vehicle as well as the vehicle’s response to those steering inputs. If the

system detects that the vehicle is beginning to spin, Yaw Control reduces

the engine throttle, uses selective braking at the four corners of the vehicle,

and may also use trailer braking, to help you keep the vehicle under control.

WARNING! During a Yaw Control system intervention, the vehicle

automatically decelerates. Yaw Control can slow the vehicle with or without

you applying the brake, and even when you are applying the throttle.

A Real World Example

Of How Yaw Control

Operates:

Excessive speed exceeds the

threshold, creating a situation

where a vehicle is likely to spin

and jackknife.

The Bendix

Yaw Control

system reduces engine

throttle and selectively

applies brakes to reduce

the tendency to jackknife.

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BENDIX BW2489 User Manual Page 8