2012 TOYOTA IQ engine

448 6-1. Specifications
iQ_WE_74014E
Drive belt tension1KR-FE engine
6.5 7.5 mm (0.26 0.29 in.)
*
10.0 12.0 mm (0.39 0.47 in.)*
Vehicles without air conditioning system:
Vehicles with air conditioning system:
1NR-FE engine
10.0 12.0 mm (0.39 0.47 in.)
*
*
: Drive belt deflection with 98 N (10 kgf, 22 lbf) thumb
force (used belt)
Generator
Water pump
Crankshaft55 mm (2.17 in.)
CrankshaftWater pumpGenerator
Air conditioning
compressor55 mm (2.17 in.)
CrankshaftWater pumpGenerator
Air conditioning
compressor

449 6-1. Specifications
6
Vehicle specifications
iQ_WE_74014E
Fuel
Lubrication system
Fuel typeEU area:
Unleaded gasoline conforming to European stan-
dard EN228 only
Except EU area:
Unleaded gasoline only
Research octane number 95 or higher
Fuel tank capacity
(Reference)32 L (8.5 gal., 7.0 Imp.gal.)
Oil capacity
(Drain and refill
-reference)
With filter
Without filter1KR-FE engine
3.1 L (3.3 qt., 2.7 Imp.qt.)
1NR-FE engine
3.5 L (3.7 qt., 3.1 Imp.qt.)
1KR-FE engine
2.9 L (3.1 qt., 2.6 Imp.qt.)
1NR-FE engine
3.3 L (3.5 qt., 2.9 Imp.qt.)

450 6-1. Specifications
iQ_WE_74014EEngine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Toyota rec-
ommends the use of approved “Toyota Genuine Motor Oil”. Another
motor oil of matching quality can also be used.
Oil grade:
0W-20, 5W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM “Energy-Conserving”, SN
“Resource-Conserving” or ILSAC multigrade engine oil
15W-40 and 20W-50:
API grade SL, SM or SN multigrade engine oil
Recommended viscosity (SAE):
SAE 0W-20 is filled into your
Toyota vehicle at manufacturing,
and the best choice for good fuel
economy and good starting in
cold weather.
If SAE 0W-20 oil is not available,
SAE 5W-30 oil may be used.
However, it should be replaced
with SAE 0W-20 at the next oil
change.
If you use SAE 10W-30 or a
higher viscosity engine oil in
extremely low temperatures, the
engine may become difficult to
start, so SAE 5W-30 or lower vis-
cosity engine oil is recom-
mended.
Temperature range anticipated before
next oil change.
Preferred

451 6-1. Specifications
6
Vehicle specifications
iQ_WE_74014E
The 0W portion of the oil viscosity rating indicates the characteristic of the oil
which allows cold startability. Oils with a lower value before the W allow for
easier starting of the engine in cold weather.
The 20 in 0W-20 indicates the oil viscosity when the oil is at its operating
temperature. An oil with a higher viscosity may be better suited if the vehicle
is operated at high speeds, or under extreme load conditions.
How to read oil container labels:
Either or both API registered marks are added to some oil containers
to help you select the oil you should use.
API Service Symbol
Top portion: The oil quality desig-
nation by API (American Petro-
leum Institute) (SN)
Center portion: The SAE viscosity
grade (SAE 0W-20)
Lower portion: “Resource-Con-
serving” means that the oil has
fuel-saving and environmental
protection capabilities.
ILSAC Certification Mark
The ILSAC (International Lubri-
cant Standardization and
Approval Committee) Certification
Mark is displayed on the front of
the container.

452 6-1. Specifications
iQ_WE_74014E
Cooling system
Ignition system
Capacity
(Reference)
1KR-FE
engineVehicles with a manual transmission
4.3 L (4.5 qt., 3.8 Imp.qt.)
Vehicles with a Multidrive
4.5 L (4.8 qt., 4.0 Imp.qt.)
1NR-FE
engineVehicles with a manual transmission
4.7 L (5.0 qt., 4.1 Imp.qt.)
Vehicles with a Multidrive
4.9 L (5.2 qt., 4.3 Imp.qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-
silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Spark plug
Make
1KR-FE engine
DENSO SK16HR11
1NR-FE engine
DENSO SC20HR11
Gap 1.1 mm (0.043 in.)
NOTICE
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.

455 6-1. Specifications
6
Vehicle specifications
iQ_WE_74014E
Brakes
*1: Minimum pedal clearance when depressed with a force of 300 N (30 kgf, 66
lbf) while the engine is running
*2: Parking brake lever travel when pulled up with a force of 200 N (20 kgf, 44
lbf)
Steering
Tires and wheels
Pedal clearance*1
Vehicles with rear drum brake
Vehicles with rear disc brake91 mm (3.58 in.) Min.
86 mm (3.39 in.) Min.
Pedal free play 1  6 mm (0.04  0.24 in.)
Parking brake lever travel*2
Vehicles with rear drum brake
Vehicles with rear disc brake6  9 clicks
5  8 clicks
Fluid type SAE J1703 or FMVSS No.116 DOT 3
Free play Less than 30 mm (1.2 in.)
Tire size 175/65R15 84S, 175/60R16 82H
Tire inflation pressure
(Recommended cold tire
inflation pressure)Vehicle
speedFront wheel
kPa (kgf/cm
2
or bar, psi)Rear wheel
kPa (kgf/cm2
or bar, psi)
More than
160 km/h
(100 mph)240 (2.4, 35) 230 (2.3, 33)
160 km/h
(100 mph)
or less230 (2.3, 33) 220 (2.2, 32)
Wheel size 15  5 J, 16  5 J
Wheel nut torque 103 N·m (10.5 kgf·m, 76 ft·lbf)

457
6-1. Specifications
6
Vehicle specifications
iQ_WE_74014E
Fuel infor mation
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Toyota has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
If your engine knocks
Consult any authorized Toyota dealer or repairer, or another duly quali-
fied and equipped professional.
You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
NOTICE
Notice on fuel quality
Do not use improper fuels. If improper fuels are used the engine will be
damaged.
Do not use leaded gasoline.
Leaded gasoline will cause the three-way catalytic converter to lose its
effectiveness and emission control system to function improperly.
EU area:
Your vehicle must use only unleaded gasoline conforming to Euro-
pean standard EN228. For optimum engine performance, select
unleaded gasoline with a Research Octane Number of 95 or higher.
Except EU area:
Your vehicle must use only unleaded gasoline. For optimum engine
performance, select unleaded gasoline with a Research Octane
Number of 95 or higher.

460 6-2. Customization
iQ_WE_74014E
Illumination
(
P. 286)Time elapsed before
lights turn off15 seconds7.5 seconds
30 seconds
Operation when the
doors are unlockedON OFF
Operation after the
“ENGINE START
STOP” switch turned
OFF (vehicles with
smart entry & start sys-
tem)
Operation after the
engine switch turned off
(vehicles without smart
entry & start system)ON OFF
Seat Belt
Reminder
Buzzer
(
P. 399)Vehicle speed linked
seat belt reminder
buzzerON OFF
ItemFunctionDefault settingCustomized
setting