Page 393 of 564

393 4-3. Do-it-yourself maintenance
4
Maintenance and care
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 dan-
gerous 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.
Vehicles with a compact spare tire: Do not tow if your vehicle has a com-
pact spare tire installed.
When initializing the 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.
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
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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 435 of 564

5When trouble arises
435
5-1. Essential information
Emergency flashers .......... 436
If your vehicle needs to
be towed ......................... 437
If you think something is
wrong .............................. 445
Fuel pump shut
off system ....................... 446
5-2. Steps to take in an
emergency
If a warning light turns
on or a warning buzzer
sounds... ........................ 447
If you have a flat tire
(vehicles with a spare
tire) ................................. 462
If you have a flat tire
(vehicles with an
emergency tire puncture
repair kit)......................... 475
If the engine will not
start ................................ 492
If the shift lever cannot be
shifted from P ................. 495
If you lose your keys ......... 496If the electronic key does
not operate properly ....... 497
If the battery is
discharged ...................... 501
If your vehicle
overheats ........................ 509
If you run out of fuel and
the engine stalls.............. 514
If the vehicle becomes
stuck ............................... 516
If your vehicle has to
be stopped in an
emergency ...................... 518
Page 445 of 564

5
445
5-1. Essential information
When trouble arises
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional 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
High engine coolant temperature warning light flashes or
comes on
Low engine coolant temperature indicator comes on or does
not come on continuously
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 roughly
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
Page 447 of 564
5
447
When trouble arises
5-2. Steps to take in an emergency
If a war ning light tur ns on or a warning buzzer sounds...
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 any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
Warning lightWarning light/Details
Brake system warning light (warning buzzer)
• Low brake fluid
• Malfunction in the brake system
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
any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
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 449 of 564

5
449 5-2. Steps to take in an emergency
When trouble arises
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 any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional immedi-
ately.
Warning lightWarning light/Details
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic Multidrive control system (if equipped);
• The emission control system; or
• The DPF catalytic converter (if equipped).
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system.
(Flashes)Stop & Start cancel indicator light (if equipped)
Indicates a malfunction in the Stop & Start system.
Slip indicator light
Indicates a malfunction in:
• The VSC system;
• The TRC system; or
• The VSC+ system