BMW Body Electronics II PDF Manual

1. MFL with function buttons
2. Turn signal/high beam stalk
3. Transmission selector lever
4. Wiper switch
5. Cruise control stalk
6. Steering wheel heating switch
7. Steering column adjustment stalk
The Steering Column Switch Center (SZL) handles all functional components of the Multi-Function Steering Wheel (MFL) and the steering column.
The SZL is a satellite of the overall ISIS system (Intelligent Safety and Integration System) on the byteflight bus system.

iDrive Application:
• Driving Area (Complete Coverage)
• Comfort Area (Complete Coverage)
Frequently used basic functions such as lights, air conditioning/ heating temperature, radio volume and rear window heater are controlled by means of switches on the instrument panel. In order to be able to make use this abundance of functions without having an unmanageable array of controls and displays, the following concept has been developed for the iDrive “Comfort Area”.

Access the iDrive Service Menu:
1.) From the main screen, press and hold the iDrive Controller knob for 10 seconds, until the knob graphic on your screen changes.
2.) Turn the iDrive knob three clicks clockwise
3.) Turn the iDrive knob three clicks counterclockwise
4.) Turn the iDrive knob one click clockwise
5.) Turn the iDrive knob one click counterclockwise
6.) Turn the iDrive knob one click clockwise
7.) Press the iDrive knob down and release

Output-controlled compressors with variable displacement were developed for the purpose of adapting to different engine speeds, ambient temperatures of interior temperatures selected by the driver.
• This adaptation is achieved by varying the angle of the swash plate.

The IHKA is the master for controlling the A/C compressor. Pressing the A/C button switches the air-conditioning system to ready state, then enabling IHKA to transmit a speed increase request to the DME (ECM). The IHKA issues a command to the junction box to couple the connection.
When DME is in READY STATE, this allows to provide torque of > 20 Nm to the compressor, the DME (ECM) issues a release for a load connection of up to 30Nm.

The Junction Box Electronics (JBE) is extremely important to the IHKA system, and is responsible for the following functions:
• Output signal for seat heating. The signal path is: SZM => ribbon cable => IHKA => K-CAN=> JBE => SHM/SMFA
• Rear window defogger. The signal path is: IHKA => K-CAN => JBE (relay) => Rear window defogger filters/grid
• Blower motor operating voltage.
• Refrigerant control valve (in compressor).
The signal path is: IHKA => K-CAN => JBE => Operating voltage for valve Condition Based Service:
• To access the CBS date press the controller (CON), the “Settings” menu will appear.
• Turn the controller until “Service” is highlighted, then press to activate the CBS menu. NOTE!! The service operation display field always shows the first five messages.
• The display indicates the symbols for service information time, distance and data information.
• Any overdue service operations and symbols marked in RED in the list are always at the top of the list of messages.
• Turn the controller to select the required service operation and display the selection by pressing the controller.
• All fields can be reset using the service functions found in the diagnosis program of appropriate software or scan tool.

The On-Board Monitor System was introduced as optional equipment on the 1997 E38 and E39 models. It was made standard on the E38 750iL for 1999 and standard for all E38 in 2000. In addition, the MARK1 Navigation system is incorporated into the total scope of On-Board Monitor Control
The On-Board Monitor is essentially a control unit display. The I-Bus is the communication line to the On-Board Monitor Control Panel. Data communication takes place over the I-Bus between the BMBT and the following modules:
• IKE • Telephone Handset • Multi-Function Steering wheel
• Radio Receiver • Video Module • Audio System Amplifier The ARCNET: Attached – Resource – Computing – Network

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