Dodge Durango 2018 Owner's Manual page 144

142 GETTING TO KNOW YOUR VEHICLE
4. Position the crossbars across the roof making sure the
letters on the crossbars align with the matching letters
on the side rail.
Positioning Crossbars
5. Slide the cross bar into to the deploy position by moving
it towards the matching letter in the side rail. Be sure the
crossbar is fully deployed with the crossbar pushed as
far into the slot as possible. Once the crossbar is in place,
tighten both thumb screws completely.
Installing Crossbars