If the listing has interior pics, look at the center console. Around the Mode knob(Smaller) knob, you will see 4H, and 4L. That is the only guarantee.
4A works REALLY well on these honestly. Almost 3 years of Ownership, and never used anything other than 4A in slippery conditions, other than playing with modes. That includes driving through a foot of fresh snow. Would I buy this size SUV that is gas driven without it 4L as an option, no, but 95% of the people that buy these things don't need it, and that is a fact.
The 4th Gen's have a TOD transfer case. ALL 4WD ones do. That is how the 4A works. In 4A, front Diff, and hubs are engaged, Torque is sent forward when slip is detected, hence Torque on Demand. Only difference between 4A, and 4H, is that in 4A power is not sent forward unless slip is sensed, where as in 4H, the clutches in the center diff are already engaged sending power forward, and maintains a pretty much 50/50 split. There is some give and take based on slip and modes.
