5 Series E60 M5 (S85) SAL
The brake light switch tells DSC when the brake pedal has been pressed.
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Brake fluid level switch
If the brake fluid level is too low, this will be detected and the DSC control unit will be informed.
An insufficient brake fluid level will be indicated on the instrument cluster by the general brake system warning
light (signal via CAN bus).
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DSC button
The DSC button is in the centre console switch cluster (SZM) The DSC button has three switching states:
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DSC ready for use
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DTC ready for use
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DSC completely switched off
The DSC control unit also communicates with the following control units:
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Digital motor electronics or digital diesel electronics
The DME / DDE controls engine adaptation (for example, reduction in engine output to prevent spin at the driven
wheels). The DME / DDE also receives the converted wheel speed signal from the rear right wheel. This signal
is used to check the plausibility of engine misfires (DME).
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Car Access System or multi-audio system controller/Car Communication Computer
The CAS control unit and M-ASK/CCC receive the converted wheel speed signal from the rear left wheel.
Both these control units use this signal to ascertain whether the car is moving or at a standstill.
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Safety and gateway module
The SGM is the gateway between:
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PT-CAN
•
K-CAN
•
byteflight
•
Diagnostic wire
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Active Cruise Control
DSC receives requests from the Active Cruise Control (ACC) via the PT-CAN. In response, DSC reduces speed
by applying the brakes at all four wheels.
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Light module
As required by law, the brake lights are activated in the event of automatic braking when the Electronically
Controlled Deceleration function (ECD) is triggered by the ACC. This function requires a signal sent via the K-
CAN to the light module (LM).
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Instrument cluster
The DSC control unit actuates the indicator and warning lights for DSC in the instrument cluster.
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Electronic gearbox control (vehicles with automatic transmission)
The transmission control (EGS) receives the wheel-speed signals via the PT-CAN.
The gearbox controller responds by adapting the gearshift characteristics for cornering and ascents. In addition,
the gearshift characteristics are adapted to winter conditions (high wheel slip).
Moreover, gearshifts are suppressed during DSC control.
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Central Information Display and Controller
The detailed texts for the Check Control messages are shown in the Central Information Display (CID).
CID and controller are also used to initialise the tyre defect indicator (RPA).
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Telephone control unit with GPS antenna
SBT Dynamic Stability Control DSC 8 E60, E61, E63, E64
BMW AG - TIS
23.02.2013 19:56
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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