Like a lot of large SUVs, entry into the cabin does require a big first step. We tended to use the sturdy grab handles to swing up and into the front. Third-row entry is made easier by use of a touch-and-tumble seat on the right side. It’s still a bit of a crawl for adults to move into the back, but the rear seating area is surprisingly accommodating, at least for two adults. There are seatbelts and headrests for three, but in real life, the third row will seat three adults best if the middle passenger likes to cuddle.

Interior comfort and control systems have been re-engineered from the ground up. Two- and three-zone climate control systems are common in large cars and SUVs these days, but the Lexus LX has separate climate controls for four zones, so people in the first and second rows can dial in their own air flow volume and temperature. To further increase precision in interior microclimates, there are a total of 28 vents distributing air flow. The blower has seven levels, and a micro dust and pollen filter conditions the incoming air.

The navigation system is new. The screen is powered by the fifth-generation satellite-based operating system, which offers English, French and Spanish language audio and display. The navigation systems from Toyota and Lexus have recently been among the best.

XM traffic radio, which selects the least crowded route to a destination, is available, as is the Mark Levinson audio system. The Levinson option provides an upgrade equal to any automotive audio we know of; the Mark Levinson systems are among the cleanest sounding available. The hard drive disc offers 13.9 gigabites for music storage, playable through 19 speakers that, combined, generate true surround sound. The system is compelling and memorable. Anyone with doubts about potential for sound quality in an SUV should bring their favorite DVD, get in the LX, and turn it up.

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