The 7 speed DSG in the Tiguan (DQ500) is a much stronger gearbox than the 7 speed used in the entry level Golf/Polo/Passat (DQ200)
which was the unit that was involved with the recalls. Major differences are that the DQ500 is a "wet" gearbox compared to DQ200 which is "dry".
The DQ500 is shared with VW Transporter and Audi TT-RS (which outputs 250kW/450Nm), and is built to handle the higher torque/power applications.
There are very few issues reported with this gearbox.