If the instrument cluster is coded for automatic transmission, the program and selector lever display for automatic transmission is activated.
Depending on the transmission coding variant, the instrument cluster can determine the selector lever position by means of a separate data line or receive it from the transmission control unit via the CAN bus.
The instrument cluster is connected to the transmission control unit by means of a separate data link. By way of this data link, the transmission control unit informs the instrument cluster which drive stage is engaged, which drive program is switched on and whether the transmission is in the emergency program. If reverse is engaged, the message is made available on the K-bus.