2018 TOYOTA AURIS engine coolant

4307-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when th e hybrid system is cold.
Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line.
WARNING
■ Used engine oil
● Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground.
Call any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional, service station or auto parts store for information
concerning recycling or disposal.
● Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
● Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.
Coolant
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4317-3. Do-it-yourself maintenance
UK AURIS_HV_HB_EE (OM12M49E)
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Maintenance and care
Power control unit coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line.
■ Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -35 C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
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WARNING
■ When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor stra ight antifreeze. The correct mixture of
water and antifreeze must be used to pr ovide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

4908-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
●Fluid leaks under the vehicle.
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● The high engine coolant temperature display is shown on the multi-
information display.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● 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
If you think something is wrong
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
dealer or repairer, or anothe r duly qualified and equipped pro-
fessional as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4918-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
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When trouble arises
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following acti ons if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessaril y 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 a nd equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light in red (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released the system is operating normally.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyo ta dealer or repairer, or
another duly qualified a nd equipped professional.
Continuing to drive the vehicle may be dangerous.
Brake system warning light in yellow
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
 Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
High engine coolant temperature warning light
Indicates that the engine is almost overheating. ( P. 544)
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyo ta dealer or repairer, or
another duly qualified and equipped professional.

5068-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
■If “Shift to P before exiting vehicle.” is displayed
Message is displayed when the driver’s door is opened without
turning the power switch to off with the shift position in any position
other than P.
Change the shift position to P.
■If “Shift is in N. Release accel erator before shifting.” is dis-
played
Message is displayed when the accelerator pedal has been
depressed and the shift position is in N.
Release the accelerator pedal and change the shift position to D or
R.
■ System warning lights
In the following situations, the master warning light will not come on or flash.
Instead, a separate system warning light will come on along with a message
displayed on the multi-information display.
● Malfunction of the brake system
The brake system warning light will come on. ( P. 491)
● High engine coolant temperature
The high engine coolant temperature warning light will be displayed.
( P. 491)
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

5448-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
●The high engine coolant temperature (P. 491) is shown on the
multi-information display or a loss of hybrid system power is experi-
enced (for example, the vehicle speed does not increase).
● “Hybrid system overheated. Reduced output power.” is shown on
the multi-information display.
● Steam comes out from under the hood.
■If the high engine coolant temperature is shown on the multi-
information display
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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5478-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
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When trouble arises
Start the hybrid system and check for the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and cont act any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
WARNING
■ When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fan may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
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5488-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.