How does BMW traction control work

E85 driving power control system

intro

In addition to the already familiar ABS, ASC and CBC features, dynamic stability control on the Z4

The system (DSC) also contains another feature - DTC (Dynamic Traction Control System).

The DSC module MK 60, already used on the E46, is installed on the E85. DTC function

It can be enabled via the DSC button and has two sub-functions:

- Automatic stability control system (ASC) + Dynamic stability control system (DSC) movement

Sex regulation

- Significantly improves traction, especially on roads with low adhesion values

Other functions are basically the same.

If the DTC function is enabled, the words (indicator) "DTC" will appear on the combined meter.

The DSC warning light in the combined instrument flashes when the system makes an active adjustment intervention.

Component/installation location

The system consists of the following components:

- DSC module MK60

- Wheel speed sensor

- DSC sensor

- DSC button

The DSC module MK 60 is mounted in the engine compartment on the left front side of the top of the spring damping strut. Controls

The unit and the valve body form a unit.

The DSC sensor is located under the seat on the right side of the vehicle via a separate CAN with the DSC

Module connection. The sensor measures lateral acceleration and deflection rate.

The DSC button is installed in the center console switch, next to the RPA button.

System overview

- Input/output signal.

System function

In some cases (such as when accelerating on ice-covered slopes), previous ASC work

In addition to braking intervention on the skidding wheel, it also reduces the engine power, thus making

The vehicle maintains a very stable trajectory, but can only provide low driving force.

DTC achieves as large a stretch as possible by increasing the regulatory limits of ASC and DSC

Gravity.

When vehicle speed and lateral acceleration are lower in DTC mode compared to ASC/DSC function

Allow for a little more "drift".

As speed and lateral acceleration continue to increase, DTC functionality is getting closer to "standard" ASC

And DSC function.

Operation Short Press the DSC button to enable DTC mode. The driver can confirm whether it is enabled by the DTC symbol on the combined instrument. When the DSC button is held down (> 3 seconds), the ASC/DSC function is completely turned off and the DSC symbol in the combined meter lights up. However, the ABS function is always enabled and remains unchanged. Press the DSC button again briefly to re-enable the ASC/DSC function. The graphic symbol is extinguished. When the DSC symbol flashes, it indicates that the ASC/DSC is actively regulating intervention.