Toyota TUNDRA Manual page 264

264
4-5. Using the driving support systems
●
Vehicles with small rear ends (trailers with no load on board, etc.)
●
Motorcycles traveling in the same lane
●
When water or snow thrown up by the surrounding vehicles hinders the
detecting of the sensor
●
When your vehicle is pointing upwards
(caused by a heavy load in the luggage
compartment, etc.)
●
Preceding vehicle has an extremely high
ground clearance