You do this with the button at number 1. If button 2 has been moved to the left, you can adjust the left mirror with button 1. If you move button 2 to the right, you can move the right mirror.
The mirrors are folded. How do I unfold them?
If you want to drive away and unfold the mirrors, please press the button at number 3. You can also fold them again by pressing this button.