2012 TOYOTA IQ fuel

368 4-3. Do-it-yourself maintenance
iQ_WE_74014E
*1: Vehicles without daytime running light system and automatic light off sys-
tem
*2: Vehicles with daytime running light system or automatic light off system13 H-LP HI
*27.5 A Headlight (high beam)
14 (STRG LOCK) 20 A Steering lock system
15 H-LP RH
*110 A Right-hand headlight
16 DOME 15 A Interior light, audio system
17 ECU-B NO.1 7.5 AMain body ECU, power door lock
system, smart entry & start system
18 (MIR HTR) 7.5 A Outside rear view mirror defoggers
19 WIP-S 7.5 A Power management ECU
20 DEFOGGER 30 A Rear window defogger
21 EPS 50 A Electric power steering
22 RDI 30 A RDI FAN
23 ABS NO.1 50 A Vehicle stability control system
24 HTR-B 40 A HTR, BLR
25 ABS NO.2 30 A Vehicle stability control system
26 HORN 10 A Horn
27 EFI-MAIN 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.1, Fuel pump
28 IGN 15 A Injection, igniter
29 IG2 10 ASmart entry & start system, SRS
airbag system, meter
30 EFI NO.1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
FuseAmpereCircuit

370 4-3. Do-it-yourself maintenance
iQ_WE_74014EUnder the instrument panel
FuseAmpereCircuit
1 ECU-IG NO.1 7.5 AVehicle stability control system,
shift lock control system, electric
power steering, automatic head-
light, main body ECU
2 GAUGE 10 AElectric cooling fan(s), charging
system, emergency flashers, front
passenger’s seat belt reminder
light, back-up lights, multiport fuel
injection system/sequential multi-
port fuel injection system, wind-
shield wiper ECU, auto anti-glare
inside rear view mirror
3 HTR-IG 10 AAir conditioning system, wiper
deicer, rear window defogger
4 WASHER RR 10 A Windshield washer
5 WIPER RR 10 A Rear window wiper
6 WIPER FR 25 A Windshield wipers
7 WASHER FR 10 A Windshield washer
8 OBD 7.5 A On-board diagnosis system
9 (FOG RR) 7.5 A Rear fog light

371 4-3. Do-it-yourself maintenance
4
Maintenance and care
iQ_WE_74014E
*1: Vehicles without daytime running light system and automatic light off system
*2: Vehicles with daytime running light system or automatic light off system10TAIL NO.1
*110 AManual headlight leveling dial, front
position lights, tail lights, license
plate lights
(PANEL NO.2)*25 A Daytime running light system
11 DOOR NO.2 20 A Power windows
12 D/L NO.1 15 APower door lock system, main body
ECU
13 DOOR NO.1 30 A Power windows
14 CIG 15 A Power outlet
15 ACC 5 AOutside rear view mirrors, audio
system, shift lock control system,
main body ECU
16PA N E L
*1
5 AMeter, power management ECU(PANEL NO.1)*2Meter
17TAIL NO.2
*1
10 AFront position lights, tail lights,
license plate lights, rear fog light,
front fog lights, manual headlight
leveling dial, multiport fuel injection
system/sequential multiport fuel
injection system, instrument clus-
ter, windshield wiper ECU TA I L
*2
18 (FOG FR) 15 A Front fog lights
19 AM1 7.5 A ACC, starting system
20 STOP 10 AVehicle stability control system,
power management ECU, shift lock
control system, stop lights, multiport
fuel injection system/sequential
multiport fuel injection system
21 (D/L NO.2) 10 A Power door lock system
22 (SEAT-HTR) 15 A Seat heaters
FuseAmpereCircuit

5When trouble arises
385
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5-1. Essential information
Emergency flashers .......... 386
If your vehicle needs
to be towed ..................... 388
If you think something
is wrong .......................... 395
Fuel pump shut off
system ............................ 3965-2. Steps to take
in an emergency
If a warning light turns on
or a warning buzzer
sounds... ......................... 397
If you have a flat tire ......... 405
If the engine will
not start........................... 423
If the shift lever cannot
be shifted from P
(vehicles with
a Multidrive) .................... 425
If you lose your keys ......... 426
If the electronic key does
not operate properly
(vehicles with smart
entry & start system)....... 427
If the vehicle battery is
discharged ...................... 430
If your vehicle
overheats ........................ 435
If the vehicle becomes
stuck ............................... 438
If your vehicle has
to be stopped
in an emergency ............. 440

396
5-1. Essential information
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Fuel pump shut off system
Follow the procedure below to restart the engine after the system is
activated.
Vehicles without smart entry & start system
Turn the engine switch to the ACC or LOCK position.
Restart the engine.
Vehicles with smart entry & start system
Press the “ENGINE START STOP” switch to change to the
ACCESSORY mode or OFF.
Restart the engine.
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.
To minimize the risk of fuel leakage when the engine stalls or an air-
bag inflates upon collision, the fuel pump shut off system stops sup-
plying fuel to the engine.

5
399 5-2. Steps to take in an emergency
When trouble arises
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Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light turns off.
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 warning light (warning buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system.
Slip indicator
The indicator comes on to indicates a malfunction in:
• The VSC system; or
• The TRC system.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
Indicates that a door is not fully
closed.Check that all doors are
closed.
(Flashing)Low fuel level warning light
*1
Indicates that remaining fuel is
about 5.9 L (1.6 gal., 1.3 Imp.
gal.) or less.Refuel the vehicle.
Warning lightWarning light/Details

400 5-2. Steps to take in an emergency
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*1: When filled with less than 10 L per refueling, the fuel gauge may not display
accurately.
*2: Driver’s and front passenger’s seat belt reminders:
The driver’s and front passenger’s seat belt reminder sounds to alert the
driver and front passenger that his or her seat belt is not fastened. The
buzzer sounds for 30 seconds after the vehicle has reached a speed of at
least 20 km/h (12 mph). Then, if the seat belt is still unfastened, the buzzer
will sound in a different tone for 90 more seconds. (On the instru-
ment cluster)Driver’s seat belt
reminder light
(warning buzzer)
*2
Warns the driver to fasten
his/her seat belt.Fasten the seat belt.
(On the center
panel)Front passenger’s seat belt
reminder light
(warning buzzer)
*2
Warns the front passenger to
fasten his/her seat belt.Fasten the seat belt.
(On the center
panel)Rear passenger’s seat belt
reminder light
(vehicles with rear
passenger’s seat)
(warning buzzer)
*3
Warns the rear passenger to
fasten his/her seat belt.Fasten the seat belt.
Warning lightWarning light/DetailsCorrection procedure
*4
*5
*4
*5
*6
*6

404 5-2. Steps to take in an emergency
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If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes com-
pletely 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
professional as soon as possible.
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 (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and
warning buzzer may sound.
Customization that can be configured at any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features P. 459)
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.