Transmission Control Module Safety Functions

If components or sensors fail, the Dual-Clutch Transmission Mechatronic -J743- activates the corresponding emergency mode replacement program. The transmission can still be operated without causing damage, but shift function and quality are affected.

When malfunctions are detected by the transmission, there are four possible situations:

A malfunction is saved and a replacement program is activated at the same time. The transmission range indicator in the instrument cluster does not change and indicates the selector lever position engaged. Driving farther is possible with restrictions, the situation is not critical for either driving safety or the transmission. The driver will only notice the malfunction - if it is noticed at all - in terms of handling problems and will then automatically consult an Audi service dealer.
Individual selector lever positions blink in the transmission range indicator in the instrument cluster. The driver is shown that a desired gear selection is currently not possible. Example: If the vehicle rolls backwards in the "R" selector lever position and the transmission range indicator "D" blinks when selector lever position "D" is engaged. To prevent damage to the transmission, the Dual-Clutch Transmission Mechatronic -J743- prevents 1st gear from being engaged as long as the vehicle is rolling backwards. 1st gear is engaged only when the vehicle comes to a standstill.
The transmission range indicator lights up completely and blinks; the engaged selector lever position is highlighted. The driver is notified of a temporary serious malfunction. Example: The transmission was overloaded or the maximum temperature in the transmission was exceeded, for example due to towing a trailer with a too high of a load. Driving farther is possible once the transmission has cooled, but high load must be avoided.
The transmission range indicator blinks, the selector lever position engaged is not recognized. The driver is notified of a permanent serious malfunction. Because individual gears can no longer be engaged, this situation is critical for driving safety and for the transmission. This type of display instructs this driver to go to an Audi service dealer.