In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Navigator L are reminded to check the back seat if they opened the rear door before starting out. The LX 570 doesn’t offer a back seat reminder.
The middle row seatbelts optional on the Navigator L inflate when a collision is detected, helping to spread crash forces over a much larger area of the body and limiting head and neck movement. This can help prevent spinal and internal injuries. The LX 570 doesn’t offer inflatable seatbelts.
The Navigator L has standard Post Collision Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The LX 570 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
Over 200 people are killed each year when backed over by motor vehicles. The Navigator L has standard Reverse Brake Assist that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The LX 570 doesn’t offer backup collision prevention brakes.
The Navigator L’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The LX 570 doesn’t offer a driver alert monitor.
Both the Navigator L and the LX 570 have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, around view monitors, rear cross-path warning and available all wheel drive.