2013 TOYOTA IQ coolant temperature

120 2-2. Instrument cluster
Instrument panel light controlThe brightness of the instrument panel lights can be adjusted.
When the tail lights/headlights
are turned on, the brightness
level can changed with each
press of the switch.
● Instrument panel light control display
Displays the instrument pa nel light control display.
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the high engine coolant temperature
warning light flashes or comes on. In this case, immediately stop the vehi-
cle in a safe place, and check the engine after it has cooled completely.
(
P. 308)

122 2-2. Instrument cluster
■Indicators
The indicators inform the driver of the operating state of the
vehicle’s various systems.
Turn signal indicator
(P. 115)*1VSC OFF indicator
( P. 140)
Headlight high beam
indicator ( P. 132)*1TRAC OFF indicator
(P. 140)
Shift position and shift
range indicators
(P. 114)
(if equipped)
Engine immobilizer
system indicator
( P. 60)
Low engine coolant
temperature indicator
Indicates the engine
coolant temperature is
cool.*1Eco Driving Indicator
Light ( P. 103, 127)
*1AIR BAG ON indicator
(P. 79)
*1,2
Slip indicator ( P. 140)
*1AIR BAG OFF indicator
(P. 79)

196 4-3. Do-it-yourself maintenance
CAUTION
■When working on the engine compartment
●Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
■ When working near the electric cooling fan or radiator grille
Be sure the engine switch is in the LOCK position.
With the engine switch in the ON position, the electric cooling fan may \
auto-
matically start to run if the air condi tioning system is on and/or the coolant
temperature is high. ( P. 214)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.
NOTICE
■If you remove the air cleaner
Driving with the air cleaner removed may cause excessive engine wear due
to dirt in the air.

5
When trouble arises
271
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. Cont act your Scion dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air c onditioning system after use is
normal.)
● Flat-looking tires or uneven tire wear
● High engine coolant temperatur e 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 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, s pongy feeling, pedal almost
touches the floor

274 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 Scion dealer.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging sys-
tem.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
(Flashes or comes on) High engine coolant temperature warning light
Indicates the engine is almost overheating.
(P. 308)

308
5-2. Steps to take in an emergency
If your vehicle overheats
In the following cases, the vehicle may be overheating.
●High engine coolant temperature warning light ( P. 274) flashes
or comes on, and engine output falls (There is no speed).
● Steam is coming out from the engine compartment.
Perform the following steps.
Stop the vehicle in a safe place, turn off the air conditioning
system, and stop the engine.
If steam is coming out:
When no more steam is coming out has been confirmed,
carefully open the hood.
If there is no steam coming out:
Carefully open the hood. After the engine has cooled
down sufficiently, inspect the
radiator core (radiator), hoses,
etc. for any leaks.
If there is a large quantity of
engine coolant leaking, imme-
diately contact your Scion
dealer.
Inspect the amount of engine
coolant by checking if the res-
ervoir level is between FULL
and LOW lines.
Engine coolant reservoir
FULL
LOW

5
When trouble arises
309
5-2. Steps to take in an emergency
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable. (
P. 320)
Start the engine, allow the ai r conditioning system to run
and check that the electric coo ling fan is operating, as well
as double check that there are no leaks at the radiator core
and hoses.
Immediately after starting, after the engine has gotten cold, the
fan operates by turning on the air conditioning system. Check for
fan sound and wind. If it is difficult to determine, repeatedly turn
the air conditioning system on and off.
(However, in cold weather where temperatures go below freezing,
the fan will not operate.)
If the fan does not operate:
Stop the engine immediately and contact your Scion dealer.
If the fan operates:
Have the vehicle inspected at the nearest Scion dealer.

320 6-1. Specifications
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 vehi-
cle is operated at high speeds, or under extreme load conditions.
How to read oil container label:
The ILSAC (International Lubricant Standardization and Approval
Committee) Certification Mark is added to some oil containers to help
you select the oil you should use.
Cooling system
Capacity
(Reference) 5.2 qt. (4.9 L, 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 technology
Do not use plain water alone.