To shift from 4H (4X4 HIGH) to 2H (4X2):

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Shift the transfer case to 2H (4X2) with the vehicle rolling at a speed below 5 km/h (3 mph).
With the vehicle stopped disengage the hublocks to the free position, making sure both indicator arrows are aligned.