2011 TOYOTA AURIS overheating

41 1-1. Hybrid system
1
Before driving
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NOTICE
Hybrid battery air vent
Do not put foreign objects over the air vent. The hybrid battery (traction
battery) may overheat and be damaged.
Clean the air vent regularly to prevent the hybrid battery (traction battery)
from overheating.
Do not wet or allow foreign substances to enter the air vent as this may
cause a short circuit and damage the hybrid battery (traction battery).
Do not load a large amount of water such as an aquarium into the vehicle.
If water spills over the hybrid battery (traction battery), the battery may be
damaged.
When the rear seat belts are in use, make sure to pass them through the
guides (P. 81). Otherwise, the rear seat belts may cover the hybrid bat-
tery air vents.

170 2-1. Driving procedures
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CAUTION
Exhaust gases
Exhaust gases include harmful carbon monoxide (CO) that is colorless and
odorless. Inhaling exhaust gases may lead to death or a serious health haz-
ard.
If the vehicle is in a poorly ventilated area, stop the hybrid system. In a
closed area, such as a garage, exhaust gases may collect and enter the
vehicle. This may lead to death or a serious health hazard.
The exhaust should be checked occasionally. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.
Failure to do so may allow exhaust gases to enter the vehicle, resulting in
death or a serious health hazard.
When taking a nap in the vehicle
Always turn the hybrid system off. Otherwise, you may accidentally move the
shift lever or depress the accelerator pedal, which could cause an accident
or fire due to hybrid system overheating. Additionally, if the vehicle is parked
in a poorly ventilated area, exhaust gases may collect and enter the vehicle,
leading to death or a serious health hazard.
When braking the vehicle
When the brakes are wet, drive more cautiously. Braking distance
increases when the brakes are wet, and may cause one side of the vehicle
to brake differently than the other side. Also the parking brake may not
securely hold the vehicle.
If the power brake assist function does not operate, do not follow other
vehicles closely and avoid downhill or sharp turns that require braking.
In this case, braking is still possible, but it will require more force on the
pedal than usual. Braking distance may also increase.
The brake system consists of 2 individual hydraulic systems: If one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and braking distance
becomes longer.
If this happens, do not continue to drive the vehicle. Have your brakes
fixed immediately.

189
2-1. Driving procedures
2
When driving
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Parking brake
Usage in winter time
See “Winter driving tips” for parking brake usage in winter time. (P. 241)
NOTICE
Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components
overheating, which may affect braking performance and increase brake
wear.
Setting the parking brake
Fully set the parking brake while depressing the brake pedal.
Releasing the parking brake
Slightly raise the lever and then lower it completely while pressing the
button.

194 2-2. Instrument cluster
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By keeping the indicator needle within Eco area, more Eco-friendly driv-
ing can be achieved.
Charge area indicates regeneration* status. Regenerated energy will be
used to charge the battery.
Eco Driving Indicator Light can be enabled or disabled. (P. 201)
*: When used in this manual, “regeneration” refers to the conversion of
energy created by the movement of the vehicle into electrical energy.
NOTICE
To prevent damage to the hybrid system and its components
The hybrid system may be overheating if the top segments of the engine
coolant temperature gauge are flashing. In this case, immediately stop the
vehicle in a safe place, and check the hybrid system after it has cooled com-
pletely. (P. 479)

234 2-4. Using other driving systems
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When the VSC/TRC systems are operating
If the vehicle is in danger of slip-
ping or the front wheels spin, the
indicator flashes to indicate that
the VSC/TRC systems have
been engaged.
A buzzer (intermittent) sounds to
indicate that VSC is operating.
Sounds and vibrations caused by the ABS, brake assist, VSC and TRC
A sound may be heard from the engine compartment when the hybrid
system is started, just after the vehicle begins to move, if the brake pedal
is depressed repeatedly, or 1 - 2 minutes after the hybrid system is
stopped. This sound does not indicate that a malfunction has occurred in
any of these systems.
Any of the following conditions may occur when the above systems are
operating. None of these indicate that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
EPS operation sound
When the steering wheel operates, a motor sound (whirring sound) may be
heard.
This does not indicate a malfunction.
Reduced effectiveness of EPS
The effectiveness of EPS is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from
excessive steering input or stop the vehicle and turn the hybrid system off.
The system should return to normal within 10 minutes.

350
3-7. Other interior features
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Seat heaters
The seat heaters can be used when
The “POWER” switch is in ON mode.
When not in use
Turn the seat heater off. The indicator light turns off.
CAUTION
Burns
Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
: If equipped
Heats the left front seat
Heats the right front seat
The indicator light comes on.

5
431 5-2. Steps to take in an emergency
When trouble arises
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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.
High engine coolant temperature warning light
Indicates that the engine is almost overheating. (P. 479)

5
479
5-2. Steps to take in an emergency
When trouble arises
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If your vehicle overheats
Correction procedures
If the top segments of the engine coolant temperature gauge
are flashing
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam:
Leave the hybrid system operating and carefully lift the
hood.
The following may indicate that your vehicle is overheating:
The top segments of the engine coolant temperature gauge are
flashing:
The engine may be overheating.
“HYBRID SYSTEM OVERHEAT” is shown on the multi-informa-
tion display:
The power control unit may be overheating.
Follow the correction procedure as described below.
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