BMW 7 Series: Driver Assistance Functions
Depending on the equipment specification, two driver assistance functions that act on the longitudinal dynamics of the vehicle can be integrated in the ICM control unit:
- Cruise control with braking function (Dynamic Cruise Control, DCC) and
- Active cruise control with stop&go function (ACC Stop&Go).
The Adaptive Brake Assistant function is included in the same equipment package as ACC Stop&Go.
The ACC Stop&Go function has been integrated into the ICM control unit in the F01/F02. This dispenses with the need for a separate LDM control unit. The DCC function that is calculated in the Dynamic Stability Control in the E70, for example, has been accommodated in the ICM control unit of the F01/F02.
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Fig. 26: Input/Output Signal Diagram - Driver Assistance Systems -
Longitudinal Dynamics
INDEX REFERENCE CHART
- Short range radar sensors (SRR)
- Long range radar sensors (LRR)
- Footwell module
- Control panel for driver assistance functions
- Steering column switch cluster
- Control panel for DCC or ACC Stop&Go on multifunction steering wheel
- Integrated Chassis Management
- Drive
- Dynamic Stability Control
- Instrument cluster
- "DCC" function
- "ACC Stop&Go and Adaptive Brake Assistant" functions
The ICM control unit performs an additional important function for the Lane Departure Warning and Active Blind Spot Detection driver assistance systems. As both systems warn the driver via a vibration in the steering wheel, a coordinator function is required. This is integrated in the ICM control unit.
The ICM control unit generates a reference value for the vibration based on the warning requirements for the lane departure warning (KAFAS control unit) and the lane change warning (SWW sensor). The amplitude of the vibration varies depending on what triggered the warning.
The reference value is transmitted to the steering column switching cluster via the FlexRay bus system then put into effect via the steering wheel module (LRE) or the vibration actuator in the steering wheel.
The Input/Output graphic below is intended as an overview only.
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Fig. 27: Input/Output Signal Diagram - Coordination Of Steering Wheel
Vibration
INDEX REFERENCE CHART
- Radar sensor, lane change warning
- KAFAS control unit
- Camera for lane departure warning
- Footwell module
- Control panel for driver assistance functions
- Integrated Chassis Management
- Steering column switch cluster
- Steering wheel electronics (LRE) and vibration actuator in steering wheel
- Lane change warning display in door mirror
- Instrument cluster
- Coordination function for steering wheel vibration
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Driving Dynamics Control
History
Control elements are already installed in a number of BMW vehicles that the
driver can use to switch individual
systems to a sporting mode. This includes the sports setting of the automatic
Operation And Display
The driver can select the four main modes using the driving dynamics switch.
These main modes are designated
as follows:
Comfort
Normal
Sport
Sport+
After the vehicle is started, the driving dy
System Components
ICM Control Unit
Only the system components that are linked to the new architecture of the
dynamic driving systems in the
F01/F02 are described in this Product Information. In essence, this is the ne
SEE MORE:
Steering Wheel
Removing And Installing/Replacing Sport Steering Wheel
NOTE: Chassis/wheel alignment is not necessary after the steering wheel
has been
removed and installed or replaced.
Necessary preliminary work
Remove AIRBAG UNIT
Move wheels/sport steering wheel into straight-ahead position.
Disconnect plug
Torque Converter
REMOVING AND INSTALLING/REPLACING TORQUE CONVERTER (GA6HP26Z) (N63)
Notes
IMPORTANT: After completion of work, check TRANSMISSION OIL LEVEL.
Use only approved TRANSMISSION OIL.
Failure to comply with this instruction will result in serious damage to the
transmission.
Necessary preliminary tasks
