Recently purchased a 2018 Hybrid Limited. There are three months remaining of the overall factory warranty and 27 months on the drivetrain warranty. We also purchased a 6-year extended warranty from Zurich at the same time. My question involves mounting a trailer hitch. According to the owner's manual, towing a trailer will void the factory warranties. Yet the manual goes on with endless pages about how to tow. The Zurich extended warranty mentions an exclusion for "aftermarket modifications that do not meet factory expectations." I'd like to install a hitch so I can use a bicycle rack, and to occasionally tow a small utility trailer. But before I start making calls to Toyota and Zurich to clarify this issue, can anyone give me the benefit of their experience with warranty claims on a "hitched" Rav4 hybrid?