Then it's probably safe to assume other parts of the frame and drive train are not up to the task of towing anything heavier.
High trim line SUVs are still sold more for the "country club" set than folks who tow trailers so max towing capacity is seldom considered when buying one. Wood trim and leather seating are paramount!
I'm a believer in "excess." Certainly excess in regards to towing capacity. My camper weighs roughly 5000 pounds but I didn't consider 6000 pounds max towing capacity to be acceptable and ordered the HD tow option.
-- Chuck