P1739
DTC 18147 / P1739
1) When you shift the shift lever into the Tiptronic slot (manual position), you can manually upshift by tapping the shift lever to up (+) upshift switch).
2) Only applies to vehicles equipped with a sport steering wheel: when you move the shift lever into the slot for Tiptronic (manual position) you can upshift manually by pressing one of the two buttons (+) at the steering wheel (upshift switch).
Note for DTC 18147 / P1739:
This DTC is shown when other than in position D an activation of the upshift switch (+) was recognized.