440 7-3. Do-it-yourself maintenance Tires Replace or rotate tires in accordance with maintenance schedules and treadwear. Checking tires Check if the treadwear indicators are showing on the tires. Also check the tires for uneven wear, such as excessive wear on one side of the tread. Check the spare tire condition and pressure if not rotated. 1 New tread 2 Worn tread 3 Treadwear indicator The location of treadwear indicators is shown by a “TWI” or “” mark, etc., molded into the sidewall of each tire. Replace the tires if the treadwear indicators are showing on a tire. Tire rotation Rotate the tires in the order shown. To equalize tire wear and extend tire life, Toyota recommends that tire rotation is carried out at the same interval as tire inspection. COROLLA_TMMMS_TMMC_U Front 7-3. Do-it-yourself maintenance 441 Tire pressure warning system (if equipped) Your vehicle is equipped with a tire pressure warning system that uses tire pressure warning valves and transmitters to detect low tire inflation pressure before serious problems arise. (P. 480) ◆ Installing tire pressure warning valves and transmitters When replacing tires or wheels, tire pressure warning valves and transmitters must also be installed. When new tire pressure warning valves and transmitters are installed, new ID codes must be registered in the tire pressure warning computer and the tire pressure warning system must be initialized. Have tire pressure warning valves and transmitter ID codes registered by your Toyota dealer. (P. 443) ◆ Initializing the tire pressure warning system ■ The tire pressure warning system must be initialized in the fol- lowing circumstances: ● When changing the tire size. ● When the tire inflation pressure is changed such as when changing traveling speed or load weight. When the tire pressure warning system is initialized, the current tire inflation pressure is set as the benchmark pressure. 7 Maintenance and care COROLLA_TMMMS_TMMC_U 442 7-3. Do-it-yourself maintenance ■ How to initialize the tire pressure warning system 1 Park the vehicle in a safe place and turn the engine switch off. Initialization cannot be performed while the vehicle is moving. 2 Adjust the tire inflation pressure to the specified cold tire inflation pressure level. (P. 546) Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level. 3 Turn the engine switch to the “ON” position (vehicles without a smart key system) or IGNITION ON mode (vehicles with a smart key system). 4 Open the glove box. Press and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly 3 times. 5 Vehicles without a smart key system: Wait for a few minutes with the engine switch in the “ON” position and then turn the engine switch to the “ACC” or “LOCK” position. Vehicles with a smart key system: Wait for a few minutes with the engine switch in IGNITION ON mode and then turn the engine switch off. COROLLA_TMMMS_TMMC_U 7-3. Do-it-yourself maintenance 443 ◆ Registering ID codes The tire pressure warning valve and transmitter is equipped with a unique ID code. When replacing a tire pressure warning valve and transmitter, it is necessary to register the ID code. Have the ID code registered by your Toyota dealer. ■ When to replace your vehicle’s tires COROLLA_TMMMS_TMMC_U 7 Maintenance and care Tires should be replaced if: ● The treadwear indicators are showing on a tire. ● You have tire damage such as cuts, splits, cracks deep enough to expose the fabric, and bulges indicating internal damage ● A tire goes flat repeatedly or cannot be properly repaired due to the size or location of a cut or other damage If you are not sure, consult with your Toyota dealer. ■ Replacing tires and wheels (vehicles with a tire pressure warning system) If the ID code of the tire pressure warning valve and transmitter is not registered, the tire pressure warning system will not work properly. After driving for about 20 minutes, the tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunction. ■ Tire life Any tire over 6 years old must be checked by a qualified technician even if it has seldom or never been used or damage is not obvious. ■ Routine tire inflation pressure checks (vehicles with a tire pressure warning system) The tire pressure warning system does not replace routine tire inflation pressure checks. Make sure to check tire inflation pressure as part of your routine of daily vehicle checks. ■ Low profile tires (17-inch tires) Generally, low profile tires will wear more rapidly and tire grip performance will be reduced on snowy and/or icy roads when compared to standard tires. Be sure to use snow tires or tire chains on snowy and/or icy roads and drive carefully at a speed appropriate for road and weather conditions. 444 7-3. Do-it-yourself maintenance ■ Maximum load of tire Check that the maximum load of the replacement tire is greater than 1/2 of the Gross Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is greater. For the GAWR, see the Certification Label. For the maximum load of the tire, see the load limit at maximum cold tire inflation pressure mentioned on the sidewall of the tire. (P. 551) ■ Tire types ● Summer tires Summer tires are high-speed performance tires best suited to highway driving under dry conditions. Since summer tires do not have the same traction performance as snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For driving on snow-covered roads or icy roads, the use of snow tires is recommended. When installing snow tires, be sure to replace all four tires. ● All season tires All season tires are designed to provide better traction in snow and to be adequate for driving in most winter conditions as well as for use year-round. All season tires, however, do not have adequate traction performance compared with snow tires in heavy or loose snow. Also, all season tires fall short in acceleration and handling performance compared with summer tires in highway driving. ● Snow tires For driving on snow-covered roads or icy roads, we recommend using snow tires. If you need snow tires, select tires of the same size, construction and load capacity as the originally installed tires. Since your vehicle has radial tires as original equipment, make sure your snow tires also have radial construction. Do not install studded tires without first checking local regulations for possible restrictions. Snow tires should be installed on all wheels. (P. 263) ■ Initializing the tire pressure warning system (vehicles with a tire pressure warning system) Initialize the system with the tire inflation pressure adjusted to the specified level. ■ If the tread on snow tires wears down below 0.16 in. (4 mm) The effectiveness of the tires as snow tires is lost. COROLLA_TMMMS_TMMC_U 7-3. Do-it-yourself maintenance 445 ■ If you press the tire pressure warning reset switch accidentally (vehi- cles with a tire pressure warning system) If initialization is performed, adjust the tire inflation pressure to the specified level and initialize the tire pressure warning system again. ■ When initialization of the tire pressure warning system has failed (vehicles with a tire pressure warning system) Initialization can be completed in a few minutes. However, in the following cases, the settings have not been recorded and the system will not operate properly. If repeated attempts to record tire inflation pressure settings are unsuccessful, have the vehicle inspected by your Toyota dealer. ● When operating the tire pressure warning reset switch, the tire pressure warning light does not blink 3 times. ● After driving for a certain period of time since the initialization has been completed, the warning light comes on after blinking for 1 minute. ■ Tire pressure warning system certification For the U.S.A. FCC ID: HYQ23AAK FCC ID: PAXPMVC010 NOTE: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC WARNING: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. For 7 Canada Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. NOTE: L’utilisation de ce dispositif est autorisée seulement aux deux conditions suivantes : (1) il ne doit pas produire de brouillage, et (2) l’utilisateur du dispositif doit être prêt à accepter tout brouillage radioélectrique reçu, même si ce brouillage est susceptible de compromettre le fonctionnement du dispositif. COROLLA_TMMMS_TMMC_U Maintenance and care NOTE: 446 7-3. Do-it-yourself maintenance WARNING ■ When inspecting or replacing tires Observe the following precautions to prevent accidents. Failure to do so may cause damage to parts of the drive train as well as dangerous handling characteristics, which may lead to an accident resulting in death or serious injury. ● Do not mix tires of different makes, models or tread patterns. Also, do not mix tires of remarkably different treadwear. ● Do not use tire sizes other than those recommended by Toyota. ● Do not mix differently constructed tires (radial, bias-belted or bias-ply tires). ● Do not mix summer, all season and snow tires. ● Do not use tires that have been used on another vehicle. Do not use tires if you do not know how they were used previously. ■ When initializing the tire pressure warning system (vehicles with a tire pressure warning system) Do not operate the tire pressure warning reset switch without first adjusting the tire inflation pressure to the specified level. Otherwise, the tire pressure warning light may not come on even if the tire inflation pressure is low, or it may come on when the tire inflation pressure is actually normal. COROLLA_TMMMS_TMMC_U 7-3. Do-it-yourself maintenance 447 NOTICE ■ Repairing or replacing tires, wheels, tire pressure warning valves, COROLLA_TMMMS_TMMC_U 7 Maintenance and care transmitters and tire valve caps (vehicles with a tire pressure warning system) ● When removing or fitting the wheels, tires or the tire pressure warning valves and transmitters, contact your Toyota dealer as the tire pressure warning valves and transmitters may be damaged if not handled correctly. ● When replacing tire valve caps, do not use tire valve caps other than those specified. The cap may become stuck. ■ To avoid damage to the tire pressure warning valves and transmitters (vehicles with a tire pressure warning system) When a tire is repaired with liquid sealants, the tire pressure warning valve and transmitter may not operate properly. If a liquid sealant is used, contact your Toyota dealer or other qualified service shop as soon as possible. Make sure to replace the tire pressure warning valve and transmitter when replacing the tire. (P. 441) ■ Driving on rough roads Take particular care when driving on roads with loose surfaces or potholes. These conditions may cause losses in tire inflation pressure, reducing the cushioning ability of the tires. In addition, driving on rough roads may cause damage to the tires themselves, as well as the vehicle’s wheels and body. ■ Low profile tires (17-inch tires) Low profile tires may cause greater damage than usual to the tire wheel when sustaining impact from the road surface. Therefore, pay attention to the following: ● Be sure to use proper tire inflation pressure. If tires are under-inflated, they may be damaged more severely. ● Avoid potholes, uneven pavement, curbs and other road hazards. Failure to do so may lead to severe tire and wheel damage. ■ If tire inflation pressure of each tire becomes low while driving Do not continue driving, or your tires and/or wheels may be ruined.
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