2013 Toyota Tundra CrewMax Owners Manual - Page 229
2013 Toyota Tundra CrewMax Manual
Page 229 highlights
2-5. Driving information CAUTION ● Never allow anyone to ride in the rear deck. It is not designed for pas- sengers. They should ride in their seats with their seat belts properly fastened. Otherwise, they are much more likely to suffer death or serious bodily injury, in the event of sudden braking, sudden swerving or an accident.