2010 Toyota Highlander Owners Manual - Page 557

5-2. Steps to take in an emergency CAUTION n When the compact spare tire is attached The vehicle speed may not be correctly detected, and the following systems may not operate correctly: l ABS & Brake assist l Enhanced VSC l TRAC l Cruise control system l Navigation system (if equipped) Also, not only can be following system not be utilized fully, it may actually negatively effect the drive-train components: (4WD models) l 4WD system 5 When trouble arises 533