Installation Location
The ICM control unit is installed in the center console behind the sensor for the crash safety module. This means that the position of the control unit and its integrated sensor system in the vehicle, near to its center of gravity, is ideal from the point of view of driving dynamics. The mounting points on the body are precisely determined and are measured when the vehicle is manufactured and must not be replaced with any other mounting points.
The housing of the control unit is connected to the metal body of the transmission tunnel with four screws and spacer sleeves made of aluminum. The control unit must be mounted on the vehicle body free of play as otherwise vibrations may be induced in the control unit housing which would severely impair the operation of the integrated sensor system. A secondary task of this mounting is to conduct heat away from the control unit to the body.
Scheme 15
| Index | Explanation |
|---|---|
| 1 | Upper section of housing |
| 2 | Mounting bolt |
| 3 | Connector |
| 4 | Spacer sleeve |
| 5 | Lower section of housing |
INDEX REFERENCE CHART
For the mounting to be able to perform these tasks, the following points must be observed when mounting and replacing the ICM control unit
Note. Only screws and spacer sleeves that are in perfect condition may be used. Deformed or damaged fixing elements must not be used. The mounting screws in the reamed holes must be tightened first, followed by the other two screws. The tightening torque specified in the repair instructions must be observed without fail. A check must then be carried out to make sure the control unit is mounted securely and free of play. To ensure sufficient heat dissipation and to avoid vibrations, the sides and top of the control unit housing must not come into contact with other vehicle components. Instead, the spaces provided around the control unit as part of the engineering design must always remain free of other components.
Scheme 16
| Index | Explanation |
|---|---|
| 1 | Wiring harness, e. g. for rear display |
| 2 | The compartment on the right next to the ICM control unit must remain unoccupied |
| 3 | ICM control unit |
| 4 | The compartment on the left next to the ICM control unit must remain unoccupied |
INDEX REFERENCE CHART
The wiring harness that runs in the center console in particular must never be routed in, or even pushed into, the spaces on either side of the ICM control unit.
Installation Mode
EMF installation mode is required for the purposes of replacing the EMF actuator unit or the brake cables. The EMF can be set to installation mode with the aid of the BMW diagnosis system. This mode is comprised of two subfunctions
- Setting the EMF actuator unit to the installation position
- Preventing the EMF parking brake function.
To set the unit to the installation position, the brake cables are extended to the maximum length. That is the essential requirement for being able to remove and refit the cables.
While work is being carried out on the actuator unit, the brake cables or the duo-servo parking brake, the EMF must not be inadvertently or deliberately applied. Doing so would risk causing injury. Installation mode prevents the EMF parking brake function.
That means that pulling out the parking brake button as if to apply the parking brake has no effect.
Installation mode is indicated on the instrument cluster by the parking brake indicator lamp flashing yellow.
Scheme 17
Installation mode can be cancelled in two ways
- By the performing the service function "Reset installation mode" using the BMW diagnosis system
- By driving the vehicle; when doing so, a minimum speed must be exceeded.
Once installation mode has been successfully cancelled, the parking-brake indicator lamp on the instrument panel goes out.
Note. Installation mode sets the EMF actuator unit to the installation position (brake cables extended to maximum). It also prevents the EMF being accidentally applied, e. g. when carrying out repairs.
Note. Installation mode can be cancelled either by means of a service function or by driving the car.
The ICM control unit is installed in the center console behind the sensor for the crash safety module. This means that the position of the control unit and its integrated sensor system in the vehicle -near to its center of gravity -is ideal from the point of view of driving dynamics. The mounting points on the body are precisely determined and are measured when the vehicle is manufactured and must not be replaced with any other mounting points.
Scheme 18
| Index | Explanation |
|---|---|
| 1 | Upper section of housing |
| 2 | Mounting bolt |
| 3 | Connector |
| 4 | Spacer sleeve |
| 5 | Lower section of housing |
INDEX REFERENCE CHART
The housing of the control unit is connected to the metal body of the transmission tunnel with four screws and spacer sleeves made of aluminum. The control unit must be mounted on the vehicle body free of play as otherwise vibrations may be induced in the control unit housing which would severely impair the operation of the integrated sensor system. A secondary task of this mounting is to conduct heat away from the control unit to the body.
For the mounting to be able to perform these tasks, the following points must be observed when mounting and replacing the ICM control unit
Note. Only screws and spacer sleeves that are in perfect condition may be used. Deformed or damaged fixing elements must not be used. The mounting screws in the reamed holes must be tightened first, followed by the other two screws. The tightening torque specified in the repair instructions must be observed without fail. A check must then be carried out to make sure the control unit is mounted securely and free of play.
To ensure sufficient heat dissipation and to avoid vibrations, the sides and top of the control unit housing must not come into contact with other vehicle components. Instead, the spaces provided around the control unit as part of the engineering design must always remain free of other components.