The tilt feature turns on by default, but you can follow these steps to modify the setting:

You can alternate between Live View and the 2D map view when you move your phone from the vertical to the horizontal position. Important: Live View is not intended for use in a moving vehicle. When you want to return to Live View, simply tilt your phone to a vertical position or press the Live View button.Your phone vibrates when you reach the next navigation step or destination.Tip: For safety and to prolong your battery, we suggest you put away your phone once you know where to go. Once Maps knows where you are, you’ll get directions through the camera view on your screen.Tip: Point your phone camera at buildings and signs across the street, instead of trees and people. Follow the on-screen instructions to help Maps find your location.Above the map in the travel mode toolbar, tap Walking.In the search bar, enter a destination or tap it on the map.On your Android phone or tablet, open the Google Maps app.With Live View, you get directions placed in the real world and on a mini map at the bottom of your screen. You can use Live View navigation during the walking portion of any type of trip. Google Maps offers two views for walking navigation: the 2D map and Live View.

Earth view of my house