[crcr]

Hi, I have a 2004 Highlander, 2wd, V-6, that I bought used two years ago. I already have a 3500/350# (trailer/tongue capacity) hitch with a 9-point plug, that I use to tow a 5x10' open utility trailer. I am looking into buying a used 16' or 17' Fiberglass travel trailer, specifically, a Casita or a Scamp. There are quite a few members on some of the fiberglass trailer forums that tow these small single axle travel trailers with Highlanders without any problems. Most do use a WDH and a sway bar, which I would definitely do.

Since the fiberglass travel trailer would obviously be a much heavier tug, I am looking into the towing capability of my Toyota. Since I bought it used, I don't know if it has the factory tow package or not, and I do not have the original invoice.

Can anyone tell me how to discern whether or not a Highlander has a factory tow package?
And what is comprised in the factory Highlander tow package?
Depending on whether or not I have the factory tow package, do I need to add a transmission cooler? (I live in Arizona)
If yes, any recommendations?