Express Down Window Feature
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
This feature allows the driver or front passenger to lower the door glass to its full-down position without holding the switch while the glass is in motion. To activate the Expess-down feature depress the window switch to its second detent and release, the door glass will lower automatically.