RAM 1500 Owner's Manual page 143

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 141
The switch for the power folding mirrors is located
between the power mirror switches L (left) and R (right).
Push the switch once and the mirrors will fold in, push
the switch a second time and the mirrors will return to
the normal driving position.
3
If the mirror is manually folded after electrically cycled,
a potential extra button push is required to get the
mirrors back to the home position. If the mirror does not
electrically fold check for ice or dirt build up at the pivot
area which can cause excessive drag.
Power Folding Mirror Switch