300, Magnum, 2005

Description & Operation


The purpose of the Antilock Brake System (ABS) is to prevent wheel lockup under braking conditions on virtually any type of road surface. Antilock braking is desirable because a vehicle that is stopped without locking the wheels retains directional stability and some steering capability. This allows the driver to retain greater control of the vehicle during braking.

This vehicle uses the MK25 Anti-lock Braking System (ABS). This system, a combined ABS and Traction Control system is standard on some vehicles and optional on others.

This antilock brake system uses components of the base brake system, but also features the following components:

Integrated Control Unit (ICU) - Includes Hydraulic Control Unit (HCU) (2) and Antilock Brake Module (ABM) (3)
Wheel Speed Sensors (WSS) - Four sensors (one at each wheel)

Click image to see an enlarged view

Fig. The pump/motor (1) includes the Hydraulic Control Unit (HCU) (2) and Antilock Brake Module (ABM) (3)


All-Speed Traction Control

The traction control system is an all-speed traction control. All-Speed Traction Control enhances mobility and prevents wheel slip when accelerating on slippery surfaces. Depending on how slippery, an automatically activated Winter Mode feature will select lower transmission up-shift speeds. It also provides a measure of directional stability control. Using the wheel-speed sensors, it can detect excessive yaw and help keep the car on the intended course, as for instance, when accelerating around a curve.

With rear-wheel drive, All-Speed Traction Control is effective up to 85 mph (137 km/h); with AWD, All-Speed Traction Control is effective up to 45 mph (72 km/h), which is common among competitive AWD vehicles with traction control.