Function

Function

Menu control of the multimedia module (MMM)
The on-screen menu can be controlled using the buttons on the reverse of the steering wheel.
The buttons consists of:
- a Back button
- an Enter button
- a navigation button which is used to move the cursor up, down, left and right on the screen.
These commands are transmitted from the steering wheel module (SWM) (3/130) to the infotainment control module (ICM) (16/1) via the Controller area network (CAN). The infotainment control module (ICM) converts the electrical signal to an optical signal and sends it onwards to the multimedia module (MMM) (16/108) via the MOST network.
The remote control for the multimedia module (MMM) has the same functions as the steering wheel buttons. The remote control can be used to control the menus on the display screen. An infra-red signal is transmitted from the remote control to an infra-red receiver on the infotainment control module (ICM), which in turn sends the signal on to the multimedia module (MMM) on the MOST network.

Navigation




The navigation function displays the location of the car and directions to the entered destination.
The navigation buttons on the steering wheel module (SWM) (3/130) are used to control the on-screen menu for navigation.
The multimedia module (MMM) (16/108) receives GPS signals from the antenna module (ATM) (16/110) via the MOST network.
Two signals are transmitted via the high speed side of the Controller area network (CAN) to the central electronic module (CEM) (4/56):
- information about the wheel rotation counter is transmitted from the brake control module (BCM) (4/16)
- information about the back-up gear position is transmitted from the transmission control module (TCM) (4/28).
The central electronic module (CEM) transmits both signals to the infotainment control module (ICM) (16/1) via the low speed side of the Controller area network (CAN). The vehicle speed is also transmitted to the infotainment control module (ICM) from the central electronic module (CEM). This in turn sends the signals on to the multimedia module (MMM) on the MOST network.
Information for voice guiding for the selected destination is transmitted on the MOST network between the multimedia module (MMM) and the audio module (AUD) (16/105).
A DVD with the required road network must be installed in order for the multimedia module (MMM) to select a route and display the position of the car. The multimedia module (MMM) is then able to calculate the position and display it on the directly connected screen (16/46).