Function Of Gear Shift (Except Code (428a) Steering Wheel Shift Buttons) (As Of 4/24/04)

On the automatic transmission 722.6 the electrohydraulic control unit converts the electrical signals coming from the electronic transmission control (ETC) into hydraulic signals.

Faults occurring in the ETC control unit (N15/3) are handled by the limp-home system. This is designed to allow the driver to reach a service outlet even under extreme conditions.

Selector lever positions "P", "R", "N" and "D" are transmitted by the electronic selector lever module control unit (N15/5) on the Controller Area Network bus class C (engine compartment) (CAN-C) and in parallel with this passed on to the range selector lever at the transmission end by means of a shift rod. Via touching or holding the selector lever towards "+" or "-" the shift range is pre-selected and displayed in the instrument cluster (A1) until an upshift of the transmission is possible.

1. Function Of Gear Change
   
   See FUNCTION OF GEAR CHANGE (UP TO 4/23/04) .
2. Emergency Default Mode, Function
   
   See LIMP-HOME MODE, FUNCTION (AS OF 4/24/04) .
3. Function Of Manual Drive Mode Selection
   
   See FUNCTION OF MANUAL DRIVE MODE SELECTION (EXCEPT CODE (128A) STEERING WHEEL SHIFT BUTTONS) (AS OF 4/24/04) .
4. Oil Level Control, Function
   
   See OIL LEVEL CONTROL, FUNCTION (AS OF 4/24/04) .
5. Function Of Torque Converter Lockup Clutch Control
   
   See FUNCTION OF TORQUE CONVERTER LOCKUP CLUTCH CONTROL (AS OF 4/24/04) .