System Components

System Components





SMG Control Module





The SMG Control Module is a single board unit with a modular connector system (SKE with 5 sockets) and is located next to the ECM in the E box.

Gearshift Lever





The gearshift lever accommodates a Micro Quadlock system with a 12pin electrical connector which includes the illuminated gearshift lever position indicator next to the gearshift lever on the center console.
The lever is connected to the gearbox by electric leads only. The gearshift lever works the same as the previously used version (E46, (E85) Z4).
A downshift is performed when the lever is pressed forward. An upshift is performed when the lever is pulled backward.
The signal for the reverse light is routed from the SMG Control Module via the PTCAN > SGM > KCAN to the light module.

Driving Dynamics Control (FDC)





The Driving Dynamics Control function (FDC) is standard with the SMG gearbox. In all other transmission systems, it is available with the sport package. By pressing the SPORT button (1 above), the FDC function changes overall vehicle characteristics to a sportier drive. The following systems are influenced:





The FDC button is located in the center console next to the gearshift or selector lever and is identified by the lettering SPORT. SPORT appears in the LO display in the instrument cluster when the FDC function is active.
The signals from the FDC (SPORT) button are read by the SZM. The SZM sends the signals via the KCAN > SGM > PTCAN to the Control Modules ECM, EGS/SMG, Servotronic and AFS.
If there are no faults stored in these control modules, the SZM provides a ground and the SPORT button illuminates. When illuminated, the button indicates that the sport mode is activated.
When the ignition switch is cycled OFF, this function resets back to the nonsport function. SPORT must be reselected by the driver the next time the ignition is cycled back on.

SMG Steering Wheel with Shift Paddles


The SMG steering wheel with shift paddles can also perform a gear change.
^ To upshift, pull one of the shift paddles
^ To downshift, push one of the shift paddles
You accelerate from higher gears, e.g. during passing, by manually downshifting.

Displays/Indicators in Instrument Cluster





1. Program indicator
2. Gear indicator
3. Fail safe indicator
In automatic mode, the program indicator (1) shows drive stage D engaged for automatic mode. The gear indicator (2) shows the shifted gear.
The program indicator (1) is faded out when the manual program is selected. The gear indicator (2) shows the shifted gear.
The word SPORT (3) appears in the display when the FDC function is active.
A transmission fault is indicated by a corresponding CC message (refer to Instrument Cluster, CC messages).