Page 416 of 564
416 4-3. Do-it-yourself maintenance
*1: Vehicles with a gasoline engine
*2: Vehicles with a diesel engine
*3: Vehicles with a 1NR-FE engine (with a Stop & Start system) 24 ECU-B NO.1 5 AMain body ECU, smart entry & start
system
25 DOME 15 A Interior lights, audio system, VSC
26 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
27 HAZ 10 A Turn signal lights
28 AM2 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, smart entry & start system,
starting system
29 ECU-B NO.2 5 AGauge and meters, power door
lock, wireless remote control, Stop
& Start system, smart entry & start
system, air conditioning system,
tire pressure warning system
30 ALT-S 7.5 A
31 R/I 50 AEFI MAIN, ECD MAIN, EFI NO.2,
EFI NO.3, IG2, IGN, MET, HORN
32 SPARE 20 A Spare fuse
33 SPARE 30 A Spare fuse
34 MIR-HTR 10 A
35 ID/UP 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system
FuseAmpereCircuit
Page 420 of 564

420 4-3. Do-it-yourself maintenance
Under the instrument panel
FuseAmpereCircuit
1 TAIL NO.2 10 A
Front position lights, tail lights,
license plate lights, front fog lights,
rear fog light, multiport fuel injection
system/sequential multiport fuel
injection system, gauge and meters
2 PANEL 5 AGauge and meters, instrument
panel lights, switch illumination
3 DOOR R/R 20 A Power windows
4 DOOR P 20 A Power windows
5 ECU-IG NO.1 5 AElectric cooling fan, rear window
defogger, electric power steering,
main body ECU, windshield wipers,
VSC, tire pressure warning system
6 ECU-IG NO.2 5 A ABS, VSC, Stop & Start system
7A/C 7.5 AAir conditioning system, power
heater, rear window defogger, out-
side rear view mirror defoggers
8 GAUGE 10 ABack-up light, shift lock control sys-
tem, rear seat belt reminder lights,
auto anti-glare inside rear view mir-
ror, Multidrive, audio system, pan-
oramic roof shade, multiport fuel
injection system/sequential multi-
port fuel injection system, rain sen-
sor
Page 448 of 564
448 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 any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
Warning lightWarning 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.
(Flashes or
comes on in
red)High engine coolant temperature warning light
Indicates that the engine is almost overheating. (P. 509)
Page 453 of 564

5
453 5-2. Steps to take in an emergency
When trouble arises
(Comes on)Engine oil change
reminder light (diesel
engine only)
Indicates that the engine
oil should be changed.
Comes on approximately
15000 km (9300 miles)
after the engine oil is
changed (and the oil main-
tenance data has been
reset).Check and change the
engine oil and oil filter by
any authorized Toyota
dealer or repairer, or
another duly qualified and
equipped professional. After
changing the engine oil, the
oil change system should
be reset. (P. 374)
Tire pressure warning
light
When the light comes on:
Low tire inflation pressure
such as
• Natural causes (P. 458)
• Flat tire (P. 462, 475)Adjust the tire inflation pres-
sure 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 sys-
tem checked by any
authorized Toyota dealer
or repairer, or another duly
qualified and equipped
professional.
When the light comes on
after blinking for 1 minute:
Malfunction in the tire pres-
sure warning system
(P. 459)Have the system checked
by any authorized Toyota
dealer or repairer, or
another duly qualified and
equipped professional.
Warning lightWarning light/DetailsCorrection procedure
Page 458 of 564

458 5-2. Steps to take in an emergency
If the malfunction indicator lamp comes on while driving
For some models, the malfunction indicator lamp will come on if the fuel tank
becomes completely empty. If the fuel tank is empty, refuel the vehicle
immediately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped profes-
sional, as soon as possible.
Passenger detection sensor and passenger seat belt reminder
If luggage is placed on a passenger seat, the passenger detection sensor
may cause the warning light to flash even if a passenger 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.
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 warn-
ing 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 temperature.
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
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 inflation pressure. The
tire pressure warning light will go off after a few minutes.
Page 459 of 564

5
459 5-2. Steps to take in an emergency
When trouble arises
If the tire pressure warning system is not functioning
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
If tires not equipped with tire pressure warning valves and transmitters
are used
If the ID code on the tire pressure warning valves and transmitters is not
registered in the tire pressure warning computer
If the tire inflation pressure is 500 kPa (5.1 kgf/cm
2 or bar, 73 psi) or
higher
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 a similar frequency is in use in the vehicle
If a window tint that affects the radio wave signals is installed
If there is a lot of snow or ice on the vehicle, particularly 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
If the tire pressure warning light frequently comes on after blinking for
1 minute
If the tire pressure warning light frequently comes on after blinking for 1 min-
ute when the “ENGINE START STOP” switch (vehicles with a smart entry &
start system) or the engine switch (vehicles without a smart entry & start sys-
tem) is turned on, have it checked by any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
If the engine oil change reminder light flashes (diesel engine only)
Repeated short trips and/or low-speed driving may cause the oil to degrade
sooner than usual, regardless of the actual distance driven. If this happens,
the engine oil change reminder light will flash.
Page 460 of 564

460 5-2. Steps to take in an emergency
Engine oil change reminder light comes on (diesel engine only)
Replace the engine oil and oil filter when the engine oil change reminder
light does not come on even if you have driven over 15000 km (9300 miles)
after the engine oil was changed.
There is a possibility that the engine oil change reminder light has been illu-
minated when you have driven less than 15000 km (9300 miles) based on a
usage or driving condition.
Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the
warning buzzer may sound.
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.
When driving to clean the DPF catalytic converter (diesel engine only)
When driving, pay sufficient attention to weather, road conditions, terrain and
traffic conditions, and be sure to observe traffic laws and/or regulations. Fail-
ure to do so may cause an unexpected accident, resulting in death or seri-
ous injury.
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a
loss of vehicle control and result in death or serious injury.
Stop your vehicle in a safe place as soon as possible. Adjust the tire infla-
tion 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 any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
Page 461 of 564
5
461 5-2. Steps to take in an emergency
When trouble arises
CAUTION
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
NOTICE
To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pres-
sure warning system may not operate properly.
If the fuel filter warning light comes on (diesel engine only)
Never drive the vehicle with the warning light on. Continued driving with
water accumulated in the fuel filter will damage the fuel injection pump.
When the DPF system warning light comes on (diesel engine only)
If the DPF system warning light is left on without performing cleaning, after
an additional 100 to 300 km (62 to 187 miles), the malfunction indicator lamp
may come on. If this happens, have the vehicle inspected by any authorized
Toyota dealer or repairer, or another duly qualified and equipped profes-
sional immediately.