The difficulty here is that there are several different systems that have and are being used on the Tiguan. The non-sensor versions use the ABS and either have a reset button in front of the gear shift or in later models have it on the MFD. The original sensor version either reset itself over time or had to be reset by the dealer or using VCDS. The very latest sensor version that displays individual tyre pressures I believe is also an MFD reset though I could be mistaken there as I haven't had any actual experience of it. My point is that there are various systems, some model based, some country based, some year based and it can be extremely difficult to be certain which any Tig has without investigating the individual vehicle. So, beware of well meant advice that may or may not apply to your car !!!
Cheers