Toyota RAV4 manuals

Toyota Sienna 2010-2021 Owners Manual: Uniform Tire Quality Grading

This information has been prepared in accordance with regulations issued by the National Highway Traffic Safety Administration of the U.S. Department of Transportation.

It provides the purchasers and/or prospective purchasers of Toyota vehicles with information on uniform tire quality grading.

Your Toyota dealer will help answer any questions you may have as you read this information.

DOT quality grades

All passenger vehicle tires must conform to Federal Safety Requirements in addition to these grades. Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.

For example: Treadwear 200 Traction AA Temperature A

Treadwear

The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course.

For example, a tire graded 150 would wear one and a half (1-1/2) times as well on the government course as a tire graded 100.

The relative performance of tires depends upon the actual conditions of their use. Performance may differ significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.

Traction AA, A, B, C

The traction grades, from highest to lowest, are AA, A, B and C, and they represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete.

A tire marked C may have poor traction performance.

Warning: The traction grade assigned to this tire is based on braking (straight ahead) traction tests and does not include cornering (turning) traction.

Temperature A, B, C

The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel.

Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure.

Grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109.

Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

Warning: The temperature grades of a tire assume that it is properly inflated and not overloaded.

Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.

Tire section names
Bead Sidewall Shoulder Tread Belt Inner liner Reinforcing rubber Carcass Rim lines Bead wires Chafer ...

Glossary of tire terminology
Tire related term Meaning Cold tire inflation pressure Tire pressure when the vehicle has been parked for three hours or more, or has not been driven more than 1 ...

Other materials:

Rear ceiling lights
Turns the lights on/off When the personal/interior light main switch is in the off position, the rear ceiling lights will not turn on even if the switch is on. Adjusting the rear personal/interior lights angle (if equipped) Push the edge of the light lens. Illuminated entry system ...

Driving position memory
Your preferred driving position (the position of the driver’s seat and outside rear view mirrors) can be recalled by pressing a button. Two different driving positions can be recorded into memory. Recording procedure Check that the shift lever is in P. Turn the engine switch to IGNI ...

Eject Error/ Elevator Error/ Clamp Error
DTC 44-45 Eject Error DTC 44-51 Elevator Error DTC 44-52 Clamp Error DESCRIPTION DTC No. DTC Detecting Condition Trouble Area 44-45 Disc cannot be ejected. Television display assembly 44-51 Mechanical error occurs during elevator operation. ...

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