Purpose of the System

Chassis And Suspension

A new standard suspension is used for all E46 models. The new suspension, which increases driving dynamics, consists of the following components:
- Redesign of spring/damper tuning E46/2 (standard 3 series)and additional sport chassis and suspension tuning with lowering of the vehicle by approximately 15 mm.
- Redesign of the steering gear with an 11-12% quicker steering ratio. In order to achieve a harmonious precise steering performance with a quicker gear ratio, the flexible steering disc has been hardened.
- Use of harder front and rear axle carrier mounts.

DSC MK60:

The DSC system Mk6O has been further developed with regard to certain functions.

The yaw-rate sensor and the transversal-acceleration sensor will be one component and will be called the sensor cluster. The sensor cluster is installed in the same position as the yaw rate sensor. It is operated at 5 volts and has a separate CAN connection to the control unit.

The ADB function is further improved in DSC by Dynamic Traction Control (DTC). The differential effect is brought about here by active brake intervention and DSC monitoring. The yaw moment is taken into consideration which eliminates the danger of the car swerving as it corners. The DTC is activated by pressing the DSC button. The active DTC system is indicated by the DSC warning light in the instrument cluster.

Starting September 1, 2001 DTC will be combined with overrun differential control (SDR). In the event of engine drag-torque control (MSR) while the car is cornering and oversteering, SDR performs a brake intervention at the driving wheel furthest from the bend. The brake intervention at the rear axle does not require any countersteering by the driver, thereby increasing driving safety.

In the event Of a total ABS/ASC/DSC malfunction, this will be indicated not only by the established warning lamps but also by the acoustic transmitter in the instrument cluster.

Hill Decent Control (HDC)

Hill Decent Control will be available for E46/16 4WD Models.
16" wheels and tires are now standard on the 325xi models (205/55 R16).

RPA Tire Defect Indicator

The tire detect indicator (RPA; also known as Deflation Detection System (DDS), is integrated in the DSC control unit.

RPA is used with runflat tires and indicates a tire failure based on speed comparisons of the individual wheels.