ECU-IG NO.1
10 A
P/W RL D/L P/SEAT FR
10 S/ROOF 11 P/W RR 12 P/W FR
13 P/SEAT FL
20 A 15 A 30 A 30 A 20 A 20 A
30 A
14 STOP
10 A
15 P/W FL
20 A
SIENNA_U (OM45477U)
705
4-3. Do-it-yourself maintenance
Fuse
16 PSD LH
17
4WD
18 AM1
19 GAUGE NO.2
Ampere
25 A 7.5 A 10 A
7.5 A
20
IG2
7.5 A
21 PANEL
10 A
Circuit
Power sliding door (left-side) Active Torque Control 4WD Starting system Gauges and meters, multi informa- tion display Automatic transaxle, multiport fuel injection system/sequential multi- port fuel injection system, SRS air- bag system, front passenger occupant classification system, steering lock system, smart key system, starting system, fuel pump Air conditioning system, navigation system, front passenger’s seat belt reminder light, audio system, steer- ing switch, intuitive parking assist switch, personal/interior light main switch, shift lever light, headlight levering switch, power door lock main switch, clock, power quarter window switch, seat heater switch, emergency flashers, rear window defogger switch, vehicle stability control off switch, console box light, power slide switch light
706
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
Fuse
Ampere
Circuit
22 TAIL
23 WIP ECU
24 P/VENT 25 AFS 26 WIP 27 WASHER 28 WIP RR 29 WASHER RR 30 HTR-IG
10 A
7.5 A
15 A 10 A 30 A 20 A 20 A 15 A 10 A
31 SHIFT LOCK
7.5 A
32 ECU-IG NO.2
10 A
33 PSD RH 34 OBD 35 S-HTR FL 36 S-HTR FR
25 A 7.5 A 15 A 15 A
Tail lights, trailer lights (tail lights), license plate light, rear combination lights Windshield wiper and rear window wiper Power quarter windows Automatic High Beam Windshield wiper Windshield washer Rear window wiper Rear window washer Air conditioning system Shift lock system, multiport fuel injection system/sequential multi- port fuel injection system Pre-collision system, pre-collision seat belt, dynamic radar cruise control, electric power steering, rain-sensing windshield wipers, driving position memory system, power sliding door, power third seat, power back door, multiplex communication system Power sliding door (right-side) On-board diagnosis system Seat heater (left-side) Seat heater (right-side)
SIENNA_U (OM45477U)
707
4-3. Do-it-yourself maintenance
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. (→P. 709)
●If the replaced fuse blows again, have the vehicle inspected by your
Toyota dealer.
■If there is an overload in the circuit
The fuses are designed to blow, protecting the wiring harness from damage.
■When replacing light bulbs
Toyota recommends that you use genuine Toyota products designed for this vehicle. Because certain bulbs are connected to circuits designed to prevent overload, non-genuine parts or parts not designed for this vehicle may be unusable.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failing to do so may cause damage, and possibly a fire or injury. ●Never use a fuse of a higher amperage rating than that indicated, or use
any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix. This can cause extensive damage or even fire.
●Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Toyota dealer as soon as possible.
708
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance Light bulbs
You may replace the following bulbs by yourself. The difficulty level of replacement varies depending on the bulb. If necessary bulb replacement seems difficult to perform, contact your Toyota dealer. For more information about replacing other light bulbs, contact your Toyota dealer. ■ Preparing for light bulb replacement
Check the wattage of the light bulb to be replaced. (→P. 796)
■ Turning off the power back door main switch
→P. 84
■ Front bulb locations
Headlight high beam and daytime running lights
Headlight low beam
Fog light
Front turn signal/parking and front side marker lights
SIENNA_U (OM45477U)
709
4-3. Do-it-yourself maintenance
■ Rear bulb locations
Rear turn signal light
Back-up light
Replacing light bulbs
Tail light
License plate lights
■ Headlight low beams (halogen bulb)
STEP 1
For left side only: Open the fuse box cover. (→P. 696) Unplug pushing the lock release.
the connector while
STEP 2
710
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
STEP 3
Turn the bulb base counterclock- wise.
■ Headlight high beams and daytime running lights
STEP 1
For left side only: Open the fuse box cover. (→P. 696)
Turn the bulb base counterclock- wise.
Unplug pushing the lock release.
the connector while
711
STEP 2
STEP 3
ITO43P165
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ Front fog lights (if equipped)
STEP 1
Remove the engine under cover bolt and pull down the engine under cover.
Unplug pushing the lock release.
the connector while
Turn the bulb base counterclock- wise.
STEP 2
STEP 3
712
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ Front turn signal/parking and front side marker lights
STEP 1
For left side only: Open the fuse box cover. (→P. 696)
Vehicles without discharge headlights
STEP 2
Turn the bulb base counterclock- wise.
Vehicles with discharge headlights
STEP 2
STEP 3
Remove the light bulb.
713
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ Rear turn signal lights
STEP 1
Remove the securing bolts and remove the unit.
STEP 2
Turn the bulb base counterclock- wise.
STEP 3
Remove the light bulb.
714
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ Tail and back-up lights
STEP 1
Remove board.
the back door
trim
Turn the bulb base counterclock- wise.
Tail light Back-up light
Remove the light bulb.
Tail light Back-up light
715
STEP 2
STEP 3
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ License plate lights
STEP 1
Remove board.
the back door
trim
STEP 2
Turn the bulb base counterclock- wise.
STEP 3
Remove the light bulb.
716
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
■ Lights other than the above
If any of the lights listed below has burnt out, have it replaced by your Toyota dealer. ● Headlight low beams (discharge bulbs) ● High mounted stoplight ● Stop/tail and rear side marker lights ● Outer foot lights (if equipped)
■Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or may go out temporarily. The discharge bulbs will come on when normal power is restored.
■LED lights
The stop/tail and rear side marker lights and high mounted stoplight consists of a number of LEDs. If any of the LEDs burn out, take your vehicle to your Toyota dealer to have the light replaced.
■Condensation build-up on the inside of the lens
Contact your Toyota dealer for more information in the following situations. Temporary condensation build-up on the inside of the headlight lens does not indicate a malfunction. ●Large drops of water have built up on the inside of the lens. ●Water has built up inside the headlight.
■When replacing light bulbs
→P. 708
717
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
CAUTION
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights. The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. Hold the
bulb by the plastic or metal portion. If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result in heat damage, fire, or water entering the headlight unit. This may damage the headlights or cause condensation to build up on the lens.
●Vehicles with discharge headlights:
While the low beam headlights are turned on, and for a short time after they have been turned off, metal com- ponents at the rear of the headlight assembly will be extremely hot. To pre- vent burns, do not touch these metal components until you are certain they have cooled down.
Metal components
718
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
CAUTION
■Discharge headlights (if equipped)
●Contact your Toyota dealer before replacing discharge headlights (includ-
ing light bulbs).
●Do not touch the discharge headlight’s high voltage socket when the head-
lights are turned on. An extremely high voltage of 30000 V will be discharged and could result in serious injury or death by electric shock.
●Do not attempt to take apart or repair the low beam headlight bulbs, con-
nectors, power supply circuits, or related components. Doing so could result in electric shock and serious injury or death.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.
NOTICE
■When installing the back door trim
To prevent damage, be careful not to pinch any of the wire harnesses or connectors with the back door trim.
719
SIENNA_U (OM45477U)
4-3. Do-it-yourself maintenance
720
SIENNA_U (OM45477U)
5-1. Essential information Emergency flashers
Use the emergency flashers if the vehicle malfunctions or is involved in an accident.
Press the switch to flash all the turn signal lights. To turn them off, press the switch once again.
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is not running.
722
SIENNA_U (OM45477U)
5-1. Essential information If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by your Toyota dealer or a commercial towing service, using a wheel-lift type truck or flat bed truck. Use a safety chain system for all towing, and abide by all state/pro- vincial and local laws. 2WD models: If towing your vehicle with a wheel-lift type truck from the front, the vehicle’s rear wheels and axles must be in good condi- tions. (→P. 724, 726) If they are damaged, use a towing dolly or flat bed truck. AWD models: If towing your vehicle with a wheel-lift type truck, use a towing dolly. (→P. 724, 726)
Before towing
The following may indicate a problem with your transaxle. Contact your Toyota dealer before towing. ● The engine is running but the vehicle will not move. ● The vehicle makes an abnormal sound.
723
SIENNA_U (OM45477U)
5-1. Essential information
Towing with a sling-type truck
Do not tow with a sling type truck to prevent body damage.
Towing with a wheel-lift type truck
From the front (2WD models)
Release the parking brake.
724
SIENNA_U (OM45477U)
5-1. Essential information
From the front (AWD models)
Use a towing dolly under the rear wheels.
From the rear
Use a towing dolly under the front wheels.
Using a flatbed truck
If you use chains or cables to tie down your vehicle, the angles shaded in black must be 45°. Do not overly tighten the tie downs or the vehicle may be damaged.
725
SIENNA_U (OM45477U)
5-1. Essential information
NOTICE
■To prevent body damage when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent causing serious damage to the transaxle and Active Torque Control 4WD system (AWD models) when towing using a wheel-lift type truck
2WD models: Never tow this vehicle from the rear with the front wheels on the ground. This may cause serious damage to the transaxle. If towing from the rear, use a towing dolly.
AWD models: Never tow this vehicle with any of the wheels on the ground. This may cause serious damage to the tran- saxle and Active Torque Control 4WD system. Use a towing dolly.
ITN51N007
ITN51N008
■To prevent damaging the vehicle when towing using a wheel-lift type
truck When raising the vehicle, ensure adequate ground clearance for towing at the opposite end of the raised vehicle. Without adequate clearance, the vehicle could be damaged while being towed.
■Recreational towing (behind motor home, etc.)
Never dinghy tow your vehicle to prevent causing serious damage to the Active Torque Control 4WD system (AWD models) and transaxle. (→P. 376)
726
SIENNA_U (OM45477U)
5-1. Essential information If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment or repair. Contact your Toyota dealer as soon as possible. ■ Visible symptoms
● Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear ● Engine coolant temperature gauge needle continually points
higher than normal ■ Audible symptoms
● Changes in exhaust sound ● Excessive tire squeal when cornering ● Strange noises related to the suspension system ● Pinging or other noises related to the engine
■ Operational symptoms
● Engine missing, stumbling or running rough ● Appreciable loss of power ● Vehicle pulls heavily to one side when braking ● Vehicle pulls heavily to one side when driving on a level road ● Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor
727
SIENNA_U (OM45477U)
5-1. Essential information Fuel pump shut off system
To minimize the risk of fuel leakage when the engine stalls or when an airbag inflates upon collision, the fuel pump shut off system stops the supply of fuel to the engine.
Follow the procedure below to restart the engine after the system is
activated.
Vehicles without a smart key system
STEP 1
Turn the engine switch to the “ACC” or “LOCK” position. Restart the engine.
STEP 2
Vehicles with a smart key system
STEP 1
Turn the “ENGINE START STOP” switch to ACCESSORY mode or turn it off. Restart the engine.
STEP 2
NOTICE
■Before starting the engine
Inspect the ground under the vehicle. If you find that fuel has leaked onto the ground, the fuel system has been damaged and is in need of repair. Do not restart the engine.
728
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer sounds...
Calmly perform the following actions if any of the warning lights comes on or flashes. If a light comes on or flashes, but then goes off, this does not necessarily indicate a malfunction in the system. However, if this continues to occur, have the vehicle inspected by your Toyota dealer.
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake sys- tem. Immediately stop the vehicle in a safe place and contact your Toyota dealer.
Warning light
Warning light/Details
Brake system warning light (warning buzzer)* • Low brake fluid • Malfunction in the brake system This light also comes on when the parking brake is not released. If the light turns off after the parking brake is fully released, the system is operating normally.
(U.S.A.)
(Canada)
*: Parking brake engaged warning buzzer: A buzzer will sound if the vehicle is
driven at a speed of approximately 3 mph (5 km/h) or more.
729
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Stop the vehicle immediately.
The following warnings indicate the possibility of damage to the vehi- cle that may lead to an accident. Immediately stop the vehicle in a safe place and contact your Toyota dealer.
Warning light
Warning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light Indicates that the engine oil pressure is too low
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident. Have the vehicle inspected by your Toyota dealer immediately.
Warning light
Warning light/Details
Malfunction indicator lamp Indicates a malfunction in: • The electronic engine control system; • The electronic throttle control system; or • The electronic automatic transaxle control system
(U.S.A.)
(Canada)
SRS warning light Indicates a malfunction in: • The SRS airbag system; • The front passenger occupant classification system; or • The seat belt pretensioner system
730
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Warning light
Warning light/Details
“ABS” warning light Indicates a malfunction in: • The ABS; or • The brake assist system
(U.S.A.)
(Canada)
(comes on or
flashes)
Electric power steering system warning light Indicates a malfunction in the EPS (Electric Power Steer- ing) system Pre-collision system warning light (if equipped) Indicates a malfunction in the pre-collision system The warning light will operate as follows, even when the system is not malfunctioning: • The light will flash quickly when the system is operating. (→P. 336) • The light will turn on when the pre-collision braking is dis- abled. (→P. 337) • The light will turn on when the system cannot temporarily be used.
Slip indicator light Indicates a malfunction in: • Enhanced VSC • TRAC The indicator will blink when the system listed above is operational. (→P. 328)
731
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Warning light
Warning light/Details
Automatic High Beam indicator light (if equipped) Indicates a malfunction in the Automatic High Beam sys- tem (→P. 273)
Cruise control indicator light (if equipped) Indicates a malfunction in the cruise control system (→P. 293, 298)
Radar cruise control indicator light (if equipped) Indicates a malfunction in the Dynamic radar cruise control system (→P. 298)
(Flashes)
(Flashes)
(Flashes)
732
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Follow the correction procedures.
After taking the specified steps to correct the suspected problem, check that the warning light turns off.
Warning light
Warning light/Details
Correction procedure
Open door warning light
(warning buzzer)*1
Indicates that a door is not
fully closed.
Low fuel level warning
light
Indicates remaining fuel is
approximately 3.0 gal.
(11.4 L, 2.5 Imp.gal.) or
less
Driver’s seat belt
reminder light
(warning buzzer)*2
Warns the driver to fasten
his/her seat belt.
Front passenger’s seat
belt reminder light
(warning buzzer)*2
Warns the front passen-
ger to fasten his or her
seat belt.
Master warning light
A buzzer sounds and the
warning light comes on
and flashes to indicate that
the master warning system
has detected a malfunc-
tion.
(on the center
panel)
SIENNA_U (OM45477U)
Check that all the doors are closed.
Refuel the vehicle.
Fasten the seat belt.
Fasten the seat belt.
→P. 744
733
5-2. Steps to take in an emergency
Warning light
Warning light/Details Tire pressure warning light
Correction procedure
When the light comes on: Low tire inflation pressure such as • Natural causes (→P. 738) • Flat tire (→P. 745, 747)
When the light comes on after blinking for 1 minute: Malfunction in the tire pressure warning system (→P. 740) Low windshield washer fluid warning light Low level of washer fluid
Adjust the tire inflation pressure to the specified level. The light will turn off after a few minutes. In case the light does not turn off even if the tire inflation pressure is adjusted, have the system checked by your Toyota dealer.
Have the system checked by your Toyota dealer.
Fill the tank.
734
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Correction procedure
If necessary, perform main- tenance.
Perform the necessary maintenance. Please reset the mainte- nance is performed. (→P. 640)
Complete the third seat operation.
735
Warning light
(U.S.A.)
Warning light/Details
Maintenance required
reminder light
Indicates that mainte-
nance is requires accord-
ing to the driven distance
on the maintenance
schedule.*3
Illuminates for about 3 sec-
onds and then flashes for
about 15 seconds approxi-
mately 4500 miles
(7200 km) after the mainte-
nance data has been reset.
Comes on and remains on if
the distance driven exceeds
5000 miles (8000 km) after
the maintenance data has
been reset. (The indicator
will not work property unless
the maintenance data has
been reset.)
Third seat warning light
(if equipped)
Indicates that the third
seat operation is not yet
complete.
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
Warning light
Warning light/Details
Correction procedure
(AWD models)
Active Torque Control 4WD system warning light
When the light blinks: The system has been over- loaded and front-wheel drive has been automati- cally engaged. When the light comes on: Malfunction in the Active Torque Control 4WD sys- tem.
Drop your speed or stop the vehicle until the light stops blinking. (Do not stop the engine.)
Have the system checked by your Toyota dealer.
*1:Open door warning buzzer:
A buzzer will sound if the vehicle reaches a speed of 3 mph (5 km/h) with any door open.
*2:Driver’s and front passenger’s seat belt warning buzzers:
The driver’s and front passenger’s seat belt warning buzzers sound to alert the driver and front passenger that his or her seat belt is not fastened. The buzzer sounds intermittently for 10 seconds after the vehicle has reached a speed of 12 mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound at a different tone for 20 more seconds.
*3:Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual
Supplement” for the maintenance interval applicable to your vehicle.
736
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors, side and curtain shield airbag sensors, curtain shield airbag sen- sors, driver’s seat position sensor, driver’s seat belt buckle switch, front pas- senger occupant classification system (ECU and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front passenger’s seat belt buckle switch, seat belt pretensioner assemblies, inflators, interconnecting wiring and power sources. (→P. 168)
■Front passenger detection sensor and passenger seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection sensor may cause the warning light to flash even if a passen- ger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
■Electric power steering system warning light
When the voltage is low drops, the electric power steering system warning light may come on.
737
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
■If the malfunction indicator lamp comes on while driving
First check the following: ●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after taking several driving trips. If the malfunction indicator lamp does not go off even after several trips, con- tact your Toyota dealer as soon as possible.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pressure warning reset switch will not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes The tire pressure warning light may come on due to natural causes such as natural air leaks and tire inflation pressure changes caused by tem- perature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire (vehicles with compact
spare tire) The compact spare tire is not equipped with a tire pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat tire has been replaced with the spare tire. Replace the spare tire with the repaired tire and adjust the tire infla- tion pressure. The tire pressure warning light will go off after a few min- utes.
738
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
■If the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following condi- tions: (When the condition becomes normal, the system will work properly.) ●If tires not equipped with tire pressure warning valves and transmit-
ters are used.
●If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure warning computer.
The tire pressure warning system may be disabled in the following condi- tions: (When the condition becomes normal, the system will work properly.) ●If electronic devices or facilities using similar radio wave frequencies
are nearby.
●If a radio set at similar frequencies is in use in the vehicle. ●If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.
●If non-genuine Toyota wheels are used. (Even if you use Toyota wheels, the tire pressure warning system may not work properly with some types of tires.)
●If tire chains are used.
739
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
Vehicles without a smart key system
If the tire pressure warning light frequently comes on after blinking 1
minute when the engine switch is turned to the “ON” position, have it
checked by your Toyota dealer.
Vehicles with a smart key system
If the tire pressure warning light frequently comes on after blinking 1
minute when the “ENGINE START STOP” switch is turned to IGNITION
ON mode, have it checked by your Toyota dealer.
■Customization that can be configured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. (Customizable features →P. 815) However, Toyota recommends that the seat belt reminder buzzer be operational to alert the driver and front passen- ger when seat belts are not fastened.
740
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
CAUTION
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy. If the steering wheel becomes heavier than usual when operating, hold firmly and operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of vehicle control and result in death or serious injury. ●Vehicles with standard tires:
• Stop your vehicle in a safe place as soon as possible. Adjust the
tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it with the spare tire and have the flat tire repaired by the nearest Toyota dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deterio-
rate, you could lose control of the steering wheel or the brakes.
●Vehicles with run-flat tires:
• Decelerate to the lowest appropriate speed as soon as possible.
Do not drive over 55 mph (90 km/h).
• Check and adjust the tire inflation pressure immediately. • If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the tire replaced by the nearest Toyota dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deterio-
rate, you could lose control of the steering wheel or the brakes.
741
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
CAUTION
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label (tire and load information label). (If your vehicle has tires of a differ- ent size than the size indicated on the vehicle placard or tire inflation pressure label [tire and load information label], you should determine the proper tire inflation pressure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS-tire pressure warning system) that illuminates a low tire pressure telltale (tire pressure warning light) when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale (tire pressure warning light) illumi- nates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under- inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that the TPMS (tire pressure warning system) is not a sub- stitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale (tire pressure warning light).
742
SIENNA_U (OM45477U)
5-2. Steps to take in an emergency
CAUTION
Your vehicle has also been equipped with a TPMS (tire pressure warning system) malfunction indicator to indicate when the system is not operat- ing properly. The TPMS (tire pressure warning system) malfunction indi- cator is combined with the low tire pressure telltale (tire pressure warning light). When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illumi- nated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illumi- nated, the system may not be able to detect or signal low tire pressure as intended. TPMS (tire pressure warning system) malfunctions may occur for a vari- ety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS (tire pressure warning system) from functioning properly. Always check the TPMS (tire pres- sure warning system) malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alter- nate tires and wheels allow the TPMS (tire pressure warning system) to continue to function properly.
NOTICE
■Precaution when installing a different tire
When a tire of a different specification or maker is installed, the tire pres- sure warning system may not operate properly.
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5-2. Steps to take in an emergency If a warning message is displayed∗
The multi-information display shows warnings of system malfunc- tions or incorrectly performed operations. When a message is shown, perform corrections as indicated in the message.
Master warning light The master warning light comes on or flashes when a message is being shown on the multi-information display. Multi-information display Warning message Correction procedure
■ Warning buzzer
A buzzer may sound when a warning message is shown on the multi-information display.
■ If the warning message is shown again after its correction
procedure has been performed Contact your Toyota dealer as soon as possible.
∗: If equipped
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5-2. Steps to take in an emergency If you have a flat tire (vehicles with run-flat tires)
You can continue driving a vehicle with run-flat tires even if any tire goes flat. In this case, slow down and drive with extra caution. ■ Run-flat tires (A “RFT” or “DSST” mark is molded on the
sidewall)
Take your vehicle to the near- est Toyota dealer or autho- rized tire dealer as soon as possible if any tire goes flat.
The vehicle can be driven for
a maximum of 100 miles
(160 km) at a speed below 55
mph (90 km/h) after the tire
pressure warning light comes
on. (→P. 733)
■In some condition (such as at high temperatures)
You cannot continue driving for up to 100 miles (160 km).
■For the detailed information on run-flat tires
See the tire warranty booklet.
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5-2. Steps to take in an emergency
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.
■When driving over bumps
If a vehicle has a flat tire, the vehicle height will be lower than usual. Ensure that nothing strikes the bottom of the vehicle.
■To avoid damaging the tire pressure warning valves and transmit-
ters Do not use liquid sealants on flat tires.
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5-2. Steps to take in an emergency If you have a flat tire (vehicles with standard tires)
Remove the flat tire and replace it with the spare tire provided. ■ Before jacking up the vehicle
● Stop the vehicle on a hard, flat surface. ● Set the parking brake. ● Shift the shift lever to P. ● Stop the engine. ● Turn on the emergency flashers.
■ Location of the spare tire, jack and tools
Tire bag
Jack
Jack handle Tire strap Adapter socket
Spare tire
Wheel nut wrench
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5-2. Steps to take in an emergency
Taking out the jack and tools
STEP 1
Remove the cover.
STEP 2
Remove the adapter socket.
STEP 3
Remove the jack.
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5-2. Steps to take in an emergency
STEP 4
Remove the wheel nut wrench.
Taking out the spare tire
STEP 1
STEP 2
Slide the front passenger’s seat to the frontmost lock position and the right side second seat to the rearmost lock position so they will not interfere with the jack handle.
Open the right side sliding door and you will find the flap on the floor. Pull back the flap to find the spare tire clamp bolt.
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5-2. Steps to take in an emergency
STEP 3
STEP 4
Attach the adapter socket over the spare tire clamp bolt. Connect the jack handle and the adapter socket. Turn the jack handle.
The tire will be lowered com- pletely to the ground.
Take the spare tire out from underneath the vehicle and remove the holding bracket.
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5-2. Steps to take in an emergency
Replacing a flat tire
STEP 1
Chock the tires.
Front
Rear
STEP 2
Flat tire Left-hand side Right-hand side Left-hand side Right-hand side
Wheel chock positions
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
Slightly loosen the wheel nuts (one turn).
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5-2. Steps to take in an emergency
STEP 3
STEP 4
STEP 5
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.
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.
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5-2. Steps to take in an emergency
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, causing the tire to come off.
Install the tire and loosely tighten each wheel nut by hand by approximately the same amount. Tighten the wheel nuts until the tapered portion comes into loose contact with the disc wheel seat.
Installing the spare tire
STEP 1
STEP 2
Tapered portion
Disc wheel seat
STEP 3
Lower the vehicle.
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5-2. Steps to take in an emergency
STEP 4
Firmly tighten each wheel 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 flat tire, tire jack and all tools.
Stowing the flat tire
STEP 1
Remove clasps and strap.
Place tire standing up in rear tub, after putting the tire in the tire bag.
STEP 2
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5-2. Steps to take in an emergency
STEP 3
Clip clasp to outboard hook.
STEP 4
STEP 5
Clip other clasp to center or opposite hook location.
Pull strap to tighten and secure tire.
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall. Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare
tire. (→P. 794)
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5-2. Steps to take in an emergency
■Jack point guide
The jack point guides are located on the side of rocker moulding. They indi- cate the jack point positions.
■After completing the tire change
The tire pressure warning system must be reset. (→P. 674)
■When using the compact spare tire
As the compact spare tire is not equipped with a tire pressure warning valve and transmitter, low inflation pressure of the spare tire will not be indicated by the tire pressure warning system. Also, if you replace the compact spare tire after the tire pressure warning light comes on, the light remains on.
■If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:
STEP 1
Replace a rear tire with the compact spare tire. Replace the flat front tire with the tire removed from the rear of the vehicle. Fit tire chains to the front tires.
STEP 2
STEP 3
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5-2. Steps to take in an emergency
CAUTION
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically designed for use with your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tire simultaneously. ●Replace the compact spare tire with a standard tire as soon as possi-
ble.
●Avoid sudden acceleration, deceleration and braking, as well as sharp
cornering.
■When storing the compact spare tire
Be careful not to catch fingers or other body parts between the compact spare tire and the body of the vehicle.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following sys- tems may not operate correctly: ●ABS & Brake assist ●Enhanced VSC ●TRAC ●Dynamic radar cruise control (if equipped) ●Cruise control (if equipped) ●PCS (if equipped) ●Navigation system (if equipped) Also, not only can the following system not be utilized fully, but it may even negatively affect the drive-train components: