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439
PRIUS PHV_OM_OM47818U_(U)
4-3. Do-it-yourself maintenance
Items
Parts and tools
Engine oil level
(→P. 460)
Fuses
(→P. 495)
Light bulbs
(→P. 507)
Radiator and condenser
(→P. 466)
Tire inflation pressure (→P. 486)
Washer fluid
(→P. 469)
• “Toyota Genuine Motor Oil” or equivalent • Rag or paper towel • Funnel (used only for adding engine oil) • Fuse with same amperage rating as original • Bulb with same number and watt- age rating as original • Phillips-head screwdriver • Flathead screwdriver • Wrench
⎯
• Tire pressure gauge • Compressed air source • Water or washer fluid containing antifreeze (for winter use) • Funnel (used only for adding water or washer fluid)
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4-3. Do-it-yourself maintenance
CAUTION
The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe the following precautions. ■When working on the engine compartment
●Make sure that the indicator on the “POWER” switch and the “READY”
indicator are both off.
●Keep hands, clothing and tools away from the moving fan. ●Be careful not to touch the engine, power control unit, radiator, exhaust manifold, etc. right after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
■When working near the electric cooling fans or radiator grille
Be sure the “POWER” switch is off. With the “POWER” switch in ON mode, the electric cooling fans may auto- matically start to run if the air conditioning is on and/or the coolant tempera- ture is high. (→P. 466)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt in the air.
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4-3. Do-it-yourself maintenance Hood
Release the lock from the inside of the vehicle to open the hood.
STEP 1
STEP 2
Pull the hood lock release lever.
The hood will pop up slightly.
Pull up the auxiliary catch lever and lift the hood.
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STEP 3
4-3. Do-it-yourself maintenance
Hold the hood open by insert- ing the supporting rod into either of the slots.
Use the forward slot to open the hood normally, or use the rearward slot when the hood needs to be opened wide.
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked. If the hood is not locked properly, it may open while the vehicle is in motion and cause an accident, which may result in death or serious injury.
■After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your head or body.
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4-3. Do-it-yourself maintenance
NOTICE
■When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing the hood without returning the support rod properly could cause the hood to bend.
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4-3. Do-it-yourself maintenance Positioning a floor jack
When raising your vehicle with a floor jack, position the jack cor- rectly. Improper placement (such as under rear suspension etc.) may damage your vehicle or cause injury. ■ Front
■ Rear
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ITO43P106
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4-3. Do-it-yourself maintenance
CAUTION
■When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of death or serious injury:
●Lift up the vehicle using a floor jack such as the one shown in the illustra- tion.
●When using a floor jack, follow the instructions of the manual provided with
the jack.
●Do not use the jack that was supplied with your vehicle. ●Do not put any part of your body underneath the vehicle when it is sup-
ported only by the floor jack.
●Always use floor jack and/or automotive jack stands on a solid, flat, level
surface.
●Do not start the hybrid system while the vehicle is supported by the floor
jack.
●Stop the vehicle on level, firm ground, firmly set the parking brake and shift
the shift position to P.
●Make sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehicle and may cause the vehicle to fall off the floor jack.
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4-3. Do-it-yourself maintenance
CAUTION
●Do not raise the vehicle while someone is in the vehicle. ●When raising the vehicle, do not place any object on top of or underneath
the floor jack.
Rear suspension
●When raising the vehicle, do not set the
floor jack under the rear suspension.
Front
ITO43P206
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4-3. Do-it-yourself maintenance Replacing the tire
When raising your vehicle with a jack, position the jack correctly. Improper placement may damage your vehicle or cause injury. ■ Before jacking up the vehicle
● Stop the vehicle on a hard, flat surface. ● Set the parking brake. ● Shift the shift position to P. ● Stop the hybrid system.
■ Location of the jack and tools
Tool box lid Wheel nut wrench Jack Jack handle Towing eyelet
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4-3. Do-it-yourself maintenance
Taking out and storing the jack and tools
■ Taking out the jack and tools STEP 1
Move the driver’s seat to the fully forward position. (→P. 146)
STEP 2
Remove the tool box lid.
Remove 2 claws and pull the lid.
Unhook the tightening strap and take out the jack.
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4-3. Do-it-yourself maintenance
Take out the jack handle after taking out the jack.
Take out the wheel nut wrench.
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4-3. Do-it-yourself maintenance
■ Storing the jack and tools STEP 1
Store the jack and tools in a reverse way as taking out the jack.
After storing the jack, make sure it is securely held by the tight- ening strap.
STEP 2
Reinstall the lid.
Insert the tab on far side of the lid first, then insert the tab on the near side.
■When using a towing eyelet
Remove the towing eyelet after following the procedure on P. 449 to remove the jack, jack handle and wheel nut wrench.
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4-3. Do-it-yourself maintenance
Replacing a tire
STEP 1
Chock the tires.
Tire position
Wheel chock positions
Front
Rear
Left-hand side Right-hand side Left-hand side Right-hand side
Behind the rear right-hand side tire Behind the rear left-hand side tire In front of the front right-hand side tire In front of the front left-hand side tire
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STEP 2
STEP 3
STEP 4
4-3. Do-it-yourself maintenance
Slightly loosen the wheel nuts (one turn).
Turn the tire jack portion “A” by hand until the notch of the jack is in contact with the jack point.
Raise the vehicle until the tire is slightly raised off the ground.
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4-3. Do-it-yourself maintenance
STEP 5
Installing a tire
STEP 1
STEP 2
Disc wheel
Washer
Remove all the wheel nuts and the tire.
When resting the tire on the ground, place the tire so that the wheel design faces up to avoid scratching the wheel surface.
Remove any dirt or foreign mat- ter from the wheel contact sur- face.
If foreign matter is on the wheel contact surface, the wheel nuts may loosen while the vehicle is in motion, and the tire may come off the vehicle.
Install the tire and loosely tighten each wheel nut by hand by approximately the same amount. Turn the nut washers until they come into contact with the disc wheel.
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4-3. Do-it-yourself maintenance
STEP 3
Lower the vehicle.
STEP 4
Firmly tighten each nut two or three times in the order shown in the illustration.
Tightening torque: 76 ft•lbf (103 N•m, 10.5 kgf•m)
STEP 5
Stow the tire jack and all tools.
■After completing the tire change
The tire pressure warning system must be reset. (→P. 478)
■Jack point guide
The jack point guides are located under the rocker panel. They indicate the jack point positions.
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4-3. Do-it-yourself maintenance
CAUTION
■Using the tire jack
Improper use of the tire jack may cause the vehicle to suddenly fall off the jack, leading to death or serious injury. Observe the following precautions: ●Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat
tire. Do not use it on other vehicles, and do not use other tire jacks for replacing tires on this vehicle.
●Always check that the tire jack is securely set to the jack point. ●Do not put any part of your body under the vehicle while it is supported
by the jack.
●Do not start or run the hybrid system while your vehicle is supported by
the jack.
●Do not raise the vehicle while someone is inside. ●When raising the vehicle, do not put an object on or under the jack. ●Do not raise the vehicle to a height greater than that required to
replace the tire.
●Use a jack stand if it is necessary to get under the vehicle. Take particular care when lowering the vehicle to ensure that no one working on or near the vehicle may be injured.
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4-3. Do-it-yourself maintenance
CAUTION
■Replacing a tire
●Do not touch the disc wheels or the area around the brakes immedi-
ately after the vehicle has been driven. After the vehicle has been driven the disc wheels and the area around the brakes will be extremely hot. Touching these areas with hands, feet or other body parts while changing a tire, etc. may result in burns.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting in death or serious injury. • Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103
N•m, 10.5 kgf•m) as soon as possible after changing wheels.
• When installing a tire, only use wheel nuts that have been specifi-
cally designed for that wheel.
• If there are any cracks or deformations in the bolt screws, nut threads or bolt holes of the wheel, have the vehicle inspected by your Toyota dealer.
• When installing the wheel nuts, be sure to install the wheel nuts
with the tapered end facing inward. (→P. 491)
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage location to reduce the possibility of personal injury during a collision or sudden braking.
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4-3. Do-it-yourself maintenance
NOTICE
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and transmitter, contact your Toyota dealer as the tire pressure warning valve and transmitter may be damaged if not handled correctly. ■To avoid damage to the tire pressure warning valves and transmit-
ters 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. 477)
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4-3. Do-it-yourself maintenance Engine compartment
Engine coolant reservoir
(→P. 464)
Engine oil level dipstick
(→P. 460)
Engine oil filler cap
(→P. 461) Power control unit coolant (→P. 464) reservoir
Brake fluid reservoir
(→P. 467) (→P. 495) (→P. 466) (→P. 466)
Fuse box Radiator Condenser Electric cooling fans Washer fluid tank (→P. 469)
■12-volt battery
→P. 471
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4-3. Do-it-yourself maintenance
Engine oil
With the engine at operating temperature and turned off, check the oil level on the dipstick. ■ Checking the engine oil STEP 1
Park the vehicle on level ground. After warming up the engine and turning off the hybrid system, wait more than 5 minutes for the oil to drain back into the bottom of the engine.
STEP 2
Holding a rag under the end, pull the dipstick out.
STEP 3
STEP 4
Wipe the dipstick clean. Flat dipstick: Reinsert the dipstick fully.
STEP 4
Non-flat dipstick: Reinsert the dipstick fully with its protruding areas ( illustration) pointing towards the engine.
the
in
STEP 5
STEP 6
Holding a rag under the end, pull the dipstick out and check the oil level. Wipe the dipstick and reinsert it fully.
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Flat dipstick
Non-flat dipstick
4-3. Do-it-yourself maintenance
Low Normal Excessive
The shape of the dipstick may differ depending on the type of vehicle or engine.
Low Normal Excessive
The shape of the dipstick may differ depending on the type of vehicle or engine.
■ Adding engine oil
If the oil level is below or near the low level mark, add engine oil of the same type as that already in the engine.
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4-3. Do-it-yourself maintenance
Make sure to check the oil type and prepare the items needed before adding oil.
Engine oil selection →P. 615
Oil quantity (Low → Full)
1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items
Clean funnel
STEP 1
STEP 2
STEP 3
Remove the oil filler cap by turning it counterclockwise. Add engine oil slowly, checking the dipstick. Install the oil filler cap by turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the follow- ing situations, oil consumption may increase, and engine oil may need to be refilled in between oil maintenance intervals. ●When the engine is new, for example directly after purchasing the vehicle
or after replacing the engine
●If low quality oil or oil of an inappropriate viscosity is used ●When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
●When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
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4-3. Do-it-yourself maintenance
CAUTION
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so care should be taken to avoid prolonged and repeated contact. To remove used engine oil from your skin, wash thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and filters in household trash, in sewers or onto the ground. Call your Toyota dealer, service station or auto parts store for information concerning recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components. ●Avoid overfilling, or the engine could be damaged. ●Check the oil level on the dipstick every time you refill the vehicle. ●Be sure the engine oil filler cap is properly tightened.
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4-3. Do-it-yourself maintenance
Coolant
The coolant level is satisfactory if it is between the full (“FULL” or “F”) and low (“LOW” or “L”) lines on the reservoir when the hybrid system is cold. Engine coolant reservoir
Reservoir cap “FULL” line “LOW” line If the level is on or below the “LOW” line, add coolant up to the “FULL” line. (→P. 617)
Power control unit coolant reservoir
ITO43P111
Reservoir cap “F” line “L” line If the level is on or below the “L” line, add coolant up to the “F” line. (→P. 617)
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4-3. Do-it-yourself maintenance
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% cool- ant and 50% deionized water. (Minimum temperature: -31 °F [-35 °C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% cool- ant and 45% deionized water. (Minimum temperature: -44 °F [-42 °C])
For more details about coolant, contact your Toyota dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reser- voir caps, drain cock and water pump. If you cannot find a leak, have your Toyota dealer test the cap and check for leaks in the cooling system.
CAUTION
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps. The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious injuries, such as burns.
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4-3. Do-it-yourself maintenance
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
Radiator and condenser
Check the radiator and condenser and clear away any foreign objects. If either of the above parts is extremely dirty or you are not sure of their condition, have your vehicle inspected by your Toyota dealer.
CAUTION
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause seri- ous injuries, such as burns.
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Brake fluid
■ Checking fluid level
■ Adding fluid
4-3. Do-it-yourself maintenance
The brake fluid level should be between the “MAX” and “MIN” lines on the tank.
Push the tab in and lift the cover off.
Make sure to check the fluid type and prepare the necessary item.
ITO43P152
Fluid type
Items
FMVSS No.116 DOT 3 or SAE J1703 brake fluid Clean funnel
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4-3. Do-it-yourself maintenance
■Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use only newly opened brake fluid.
CAUTION
■When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted surfaces. If fluid gets on your hands or in your eyes, flush the affected area with clean water immediately. If you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear out or when the fluid level in the accumulator is high. If the reservoir needs frequent refilling, there may be a serious problem.
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4-3. Do-it-yourself maintenance
Washer fluid
STEP 1
Open the lid.
Check the washer fluid level on the level gauge.
“NORMAL” “LOW”
If the washer fluid level is at “LOW”, add washer fluid.
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STEP 2
STEP 3
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4-3. Do-it-yourself maintenance
CAUTION
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as washer fluid contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid. Doing so may cause streaking on the vehicle’s painted surfaces.
■Diluting washer fluid
Dilute washer fluid with water as necessary. Refer to the freezing temperatures listed on the label of the washer fluid bot- tle.
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4-3. Do-it-yourself maintenance 12-volt battery
■ Location
The 12-volt battery is located in the right-hand side of lug- gage compartment.
■ Removing the 12-volt battery cover STEP 1
Open the center deck board. (→P. 403)
STEP 2
Remove the side deck board.
STEP 3
Remove the auxiliary box.
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4-3. Do-it-yourself maintenance
STEP 4
Remove the 12-volt battery maintenance cover.
■ Exterior
Make sure that the 12-volt battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps.
Terminals Hold-down clamp
■Before charging
When charging, the 12-volt battery produces hydrogen gas which is flamma- ble and explosive. Therefore, observe the following precautions before charging: ●If charging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.
●Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
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4-3. Do-it-yourself maintenance
■After charging/reconnecting the 12-volt battery
●Unlocking the doors using the smart key system may not be possible immediately after reconnecting the 12-volt battery. If this happens, use the wireless remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the “POWER” switch in ACCESSORY mode. The hybrid system may not start with the “POWER” switch turned off. However, the hybrid system will operate normally from the second attempt.
●The “POWER” switch mode is recorded by the vehicle. If the 12-volt bat- tery is reconnected, the vehicle will return the “POWER” switch mode to the status it was in before the 12-volt battery was disconnected. Make sure to turn off the power before disconnect the 12-volt battery. Take extra care when connecting the 12-volt battery if the “POWER” switch mode prior to discharge is unknown.
●Restart the hybrid system, depress the brake pedal, and confirm that it is
possible to shift into each shift position.
If the system will not start even after multiple attempts at all methods above, contact your Toyota dealer.
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4-3. Do-it-yourself maintenance
CAUTION
■Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce the risk of death or serious injury, take the following precautions while working on or near the 12-volt battery: ●Do not cause sparks by touching the 12-volt battery terminals with tools. ●Do not smoke or light a match near the 12-volt battery. ●Avoid contact with eyes, skin and clothes. ●Never inhale or swallow electrolyte. ●Wear protective safety glasses when working near the 12-volt battery. ●Keep children away from the 12-volt battery. ■Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in a garage or closed room where there is insufficient ventilation.
■How to charge the 12-volt battery
Only perform a slow charge (5 A or less). The 12-volt battery may explode if charged at a quicker rate.
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4-3. Do-it-yourself maintenance
CAUTION
■Emergency measures regarding electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi- ate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the nearest medical facility.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical attention immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth- ing and follow the procedure above if necessary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention immediately.
■When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause gas (hydrogen) to enter the passenger compartment, causing a fire or explo- sion. For replacement of the 12-volt battery, contact your Toyota dealer.
NOTICE
■When charging the 12-volt battery
Never charge the 12-volt battery while the hybrid system is operating. Also, be sure all accessories are turned off.
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4-3. Do-it-yourself maintenance Tires
Replace or rotate tires in accordance with maintenance sched- ules and treadwear. ■ Checking tires
New tread Treadwear indicator Worn tread The treadwear indicators is shown by the “TWI” or “∆” marks, etc., molded on the sidewall of each tire.
location of
Rotate the tires in the order shown.
To equalize tire wear and extend tire life, Toyota recom- mends that tire rotation is carried out at the same inter- val as tire inspection. Do not fail to initialize the tire pressure warning system after tire rotation.
■ Tire rotation
Front
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4-3. Do-it-yourself maintenance
■ Tire pressure warning system
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. 538)
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 warn- ing computer and the tire pressure warning system must be initial- ized. Have tire pressure warning valve and transmitter ID codes registered by your Toyota dealer. (→P. 479)
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4-3. Do-it-yourself maintenance
Initializing the tire pressure warning system
■ The tire pressure warning system must be initialized in the fol-
lowing circumstances: ● When rotating front and rear tires which have different tire infla-
tion pressures
● When changing the tire size When the tire pressure warning system is initialized, the current tire inflation pressure is set as the benchmark pressure.
■ How to initialize the tire pressure warning system STEP 1
Park the vehicle in a safe place and turn the “POWER” switch off. Initialization cannot be performed while the vehicle is moving. Adjust the tire inflation pressure to the specified cold tire infla- tion pressure level. (→P. 619) 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. Turn the “POWER” switch to ON mode.
STEP 2
STEP 3
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STEP 4
4-3. Do-it-yourself maintenance
Press and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly 3 times.
STEP 5
Wait for a few minutes with the “POWER” switch in ON mode and then turn the “POWER” switch off.
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.
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4-3. Do-it-yourself maintenance
■When to replace your vehicle’s tires
Tires should be replaced if: ●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
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
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.
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4-3. 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. 625)
■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, con- struction 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. 349)
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4-3. Do-it-yourself maintenance
■Initializing the tire pressure warning system
Initialize the system with the tire inflation pressure adjusted to the speci- fied 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.
■If you press the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the speci- fied level and initialize the tire pressure warning system again.
■When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the follow- ing 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 pres-
sure warning light does not blink 3 times.
●After carrying out the initialization procedure, the tire pressure warn- ing light blinks for 1 minute then stays on after driving for 20 minutes.
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■Tire pressure warning system certification
For vehicles sold in the U.S.A. MODEL/FCC IDs: Transmitter: PAXPMV107J Receiver: HYQ13BDE 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 responsi- ble for compliance could void the user’s authority to operate the equip- ment. For vehicles sold in 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.
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CAUTION
■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
Do not operate the tire pressure warning reset switch without first adjust- ing 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 nor- mal.
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4-3. Do-it-yourself maintenance
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves,
transmitters and tire valve caps ●When removing or fitting the wheels, tires or the tire pressure warning valves and transmitters, contact your Toyota dealer as the tire pres- sure 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 transmit-
ters 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. 477)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot- holes. 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.
■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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PRIUS PHV_OM_OM47818U_(U)
4-3. Do-it-yourself maintenance Tire inflation pressure
■ Tire inflation pressure
The recommended cold tire inflation pressure and tire size are displayed on the tire and loading information label. (→P. 619)
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4-3. Do-it-yourself maintenance
■ Inspection and adjustment procedure
Tire valve Tire pressure gauge
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
Remove the tire valve cap. Press the tip of the tire pressure gauge onto the tire valve. Read the pressure using the gauge gradations. If the tire inflation pressure is not at the recommended level, adjust the pressure. If you add too much air, press the center of the valve to deflate. After completing the tire inflation pressure measurement and adjustment, apply soapy water to the valve and check for leakage. Put the tire valve cap back on.
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4-3. Do-it-yourself maintenance
■Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least once a month.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following: ●Reduced fuel efficiency ●Reduced driving comfort and tire life ●Reduced safety ●Damage to the drive train If a tire needs frequent inflating, have it checked by your Toyota dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following: ●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been driven for more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure reading.
●Always use a tire pressure gauge.
The appearance of the tire can be misleading. In addition, tire infla- tion pressure that is even just a few pounds off can affect ride quality and handling.
●Do not reduce tire inflation pressure after driving. It is normal for tire
inflation pressure to be higher after driving. ●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.
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CAUTION
■Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may occur and result in an accident causing death or serious injury: ●Excessive wear ●Uneven wear ●Poor handling ●Possibility of blowouts resulting from overheated tires ●Poor sealing of the tire bead ●Wheel deformation and/or tire separation ●A greater possibility of tire damage from road hazards
NOTICE
■When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on. Without the valve caps, dirt or moisture could get into the valve and cause air leakage, which could result in an accident. If the caps are lost, replace them as soon as possible.
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PRIUS PHV_OM_OM47818U_(U)
4-3. Do-it-yourself maintenance Wheels
If a wheel is bent, cracked or heavily corroded, it should be replaced. Otherwise, the tire may separate from the wheel or cause a loss of handling control. ■ Wheel selection
When replacing wheels, care should be taken to ensure that they are equivalent to those removed in load capacity, diameter, rim width and inset*. Replacement wheels are available at your Toyota dealer. *: Conventionally referred to as “offset”. Toyota does not recommend using the following: ● Wheels of different sizes or types ● Used wheels ● Bent wheels that have been straightened
■ Aluminum wheel precautions
● Use only Toyota wheel nuts and wrenches designed for use
with your aluminum wheels.
● When rotating, repairing or changing your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).
● Be careful not to damage the aluminum wheels when using
tire chains.
● Use only Toyota genuine balance weights or equivalent and a
plastic or rubber hammer when balancing your wheels.
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4-3. Do-it-yourself maintenance
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmitters that allow the tire pressure warning system to provide advance warning in the event of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure warning valves and trans- mitters must be installed. (→P. 477)
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing so may result in an accident, causing death or seri- ous injury.
■When installing the wheel nuts
Tapered portion
facing
tapered ends
●Be sure to install the wheel nuts with the inward. Installing the nuts with the tapered ends facing outward can cause the wheel to break and eventually cause the wheel to come off while driving, which could lead to an accident resulting in death or serious injury.
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened, leading to bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts to loosen and the wheel may fall off, causing an accident and resulting in death or serious injury. Remove any oil or grease from the wheel bolts or wheel nuts.
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CAUTION
■Use of defective wheels prohibited
Do not use cracked or deformed wheels. Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warn- ing valves and transmitters, make sure to have tires serviced by your Toyota dealer or other qualified service shop. In addition, make sure to purchase your tire pressure warning valves and transmitters at your Toyota dealer.
●Ensure that only genuine Toyota wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-genuine wheels.
