Prepare Vehicle's DEF Fill Port

What happens here

Approach the vehicle and open the fuel flap, typically located on the side of the vehicle. Once open, locate the smaller, often blue, cap that covers the Diesel Exhaust Fluid (DEF) fill port. Remove this cap by twisting it counter-clockwise to expose the fill opening. The narrator clarifies that DEF is Diesel Exhaust Fluid.

Goal: Make the vehicle's DEF tank accessible for refilling.