Limited models can be equipped with a 7-inch touch-screen navigation system and, when selected, it includes a screen with information about three data fields, making it a veritable science-fair program. The Energy Monitor Screen monitors the system and displays the energy flow from the engine, electric motor and high voltage battery; the Consumption Screen shows current and historical fuel economy in 5-minute increments and 50-watt hour increments of regenerated energy; and the Caution Screen reminds you that you will not recharge the high voltage battery when you leave the 2006 Toyota Highlander Hybrid in neutral - to recharge it must be placed in park.

Electronic stability assistance is courtesy of a new Vehicle Dynamic Integrated Management (VDIM) system that uses several sensors to modulate the brakes and throttle position when trouble arrives. Toyota says this technology is less obtrusive than regular stability control, but kicks in faster and to greater effect, because it is "proactive rather than reactive." Dual front airbags, optional front seat-mounted side airbags, and optional curtain airbags for all three rows deploy when the VDIM determines they're needed. Tire pressure monitoring aids safety by providing air-pressure information to help maintain optimum traction and fuel economy.