BMW M5 Wartungshandbuch PDF herunterladen (Seite 101)

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Functions

Dynamic Stability Control MK60E5

DSC Additional Functions

Compared to the standard DSC features, the

MK60E5 in the E60 M5 has been upgraded

by the following additional functions:

• M Dynamic Mode (MDM)

• Brake readiness

• Dry braking

• Hill ascent assistant.

The following functions are not required on

the M5:

• Performance control (FLR)

• Soft stop

• Fading brake support (FBS)

• Dynamic traction control (DTC).

Operating modes of the MK60E5

In principle, the MK60E5 has 3 different

operating modes:

• DSC ON

• DSC OFF

• M Dynamic mode.

There is no DTC function in connection with

the M5. However, similar to DTC mode,

corresponding control thresholds are raised

by activating the MDM.

M Dynamic Mode can be activated only via the

M-Drive.

M Dynamic Mode (MDM)

MDM gives the performance-oriented driver

the option of driving the car with controlled

float angle and longitudinal slip without DSC

intervening. The control system intervenes

only when the physical limits are exceeded.

The control thresholds are not static but

rather, as the speed increases, they approach

the thresholds of DSC ON mode.

The stability control thresholds are identical as

from a speed of approx. 200 km/h in order not

to overtax the driver in the high speed range.

Brake readiness

The brake response time is shortened during

full brake application by applying the brake

pads to the discs while rapidly restricting the

throttle.

This function ensures that a pressure of

approx. 3 bar is applied for a period of up to

300 ms to the wheel brakes in order to apply

the brake pads already before the expected

application of the brakes. This function

facilitates even more rapid response of the

brakes. The function is active as from a speed

of 30 km/h.

Dry braking

The brake response characteristics are

improved in wet conditions by removing the

water film on the brake discs.

The DSC detects rain and therefore wet brake

discs through the permanent operation of the

windscreen wiper motor.

The dry braking function applies approx. 3 bar

hydraulic pressure to the wheel brakes under

these conditions. This procedure is repeated

every 2-3 km for a period of approx. 3 s when

the accelerator pedal is sufficiently depressed

(> 10 %), the vehicle speed is ≥ 90 km/h and

the brakes were not applied over the last 2-

3km.

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