Coming from Merano into the Passeier Valley to St. Leonhard, continue towards Moos and along the Timmelsjochstraße to the car park to the right of the Timmelsbrücke bridge (km 19,7 on the Timmelsjochstraße).
You can park in the car park to the right of the Timmelsbrücke bridge or directly before the bridge to the left of the road.
