2012 TOYOTA YARIS HYBRID overheating

56 1-1. Hybrid system (hybrid vehicle)
YARIS_F (including HV)_WE_52C79E
NOTICE
Hybrid battery air vent
Do not put foreign objects over or in
front of 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 bat-
tery (traction battery).
Do not carry large amounts of water
such as water cooler bottles in the vehi-
cle. If water spills onto the hybrid bat-
tery (traction battery), the battery may
be damaged.

219 2-1. Driving procedures
2
When driving
YARIS_F (including HV)_WE_52C79E
CAUTION
Exhaust gases
Exhaust gases include harmful carbon monoxide (CO), which is colorless
and odorless. Inhaling exhaust gases may lead to death or a serious health
hazard.
Except hybrid vehicle: If the vehicle is in a poorly ventilated area, stop the
engine. 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.
Hybrid vehicle: 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 system 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 profes-
sional. 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
Except hybrid vehicle: Always turn the engine off. Otherwise, if you acci-
dentally move the shift lever or depress the accelerator pedal, this could
cause an accident or fire due to engine 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.
Hybrid vehicle: Always turn the hybrid system off. Otherwise, if you acci-
dentally move the shift lever or depress the accelerator pedal, this 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 col-
lect and enter the vehicle, leading to death or a serious health hazard.

235 2-1. Driving procedures
2
When driving
YARIS_F (including HV)_WE_52C79E
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
When the smart entry & start system indicator light flashes in yellow
The system may be malfunctioning. Have the vehicle inspected by any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional immediately.
If the electronic key battery is depleted
P. 505
Operation of the “ENGINE START STOP” switch
When operating the “ENGINE START STOP” switch, one short, firm press is
enough. If the switch is pressed improperly, the engine may not start or the
“ENGINE START STOP” switch mode may not change. It is not necessary to
press and hold the switch.
If the smart entry & start system has been deactivated in a customized
setting
P. 682

247 2-1. Driving procedures
2
When driving
YARIS_F (including HV)_WE_52C79E
Notes for the entry function
P. 7 9
If the hybrid system does not start
The immobilizer system may not have been deactivated. (P. 155)
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
Steering lock
After turning the “POWER” switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function. Operating the
“POWER” switch again automatically cancels the steering lock.
When the steering lock cannot be released
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the hybrid system is turned on and off repeatedly in a short period
of time. In this case, refrain from operating the hybrid system. After about 10
seconds, the steering lock motor will resume functioning.
Check that the shift lever is securely set
in P. The hybrid system may not start if
the shift lever is displaced out of P. The
smart entry & start system indicator light
(green) will flash quickly.
The smart entry & start system indicator
light (green) will flash quickly.
Check that the shift lever is set in P. Press
the “POWER” switch while turning the
steering wheel left and right.

271
2-1. Driving procedures
2
When driving
YARIS_F (including HV)_WE_52C79E
Parking brake
Usage in winter time
P. 338
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.
To set the parking brake,
fully pull the parking brake
lever while depressing the
brake pedal.
To release the parking
brake, slightly raise the
lever and lower it com-
pletely while pressing the
button.

277 2-2. Instrument cluster
2
When driving
YARIS_F (including HV)_WE_52C79E
NOTICE
To prevent damage to the engine and its components
Vehicles with a tachometer: Do not let the indicator needle of the tachome-
ter 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 turns on. In this case, immediately stop the vehicle
in a safe place, and check the engine after it has cooled completely.
(
P. 635, 639)

330 2-4. Using other driving systems
YARIS_F (including HV)_WE_52C79E
Reduced effectiveness of the EPS system
The effectiveness of the EPS system 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 engine
(except hybrid vehicle) or hybrid system (hybrid vehicle) off. The EPS sys-
tem should return to normal within 10 minutes.
If the slip indicator comes on
It may indicate a malfunction in the driving assist systems. Contact any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional.
CAUTION
The ABS does not operate effectively when
Tires with inadequate gripping ability are used (such as excessively worn
tires on a snow covered road).
The vehicle hydroplanes while driving at high speed on wet or slick roads.
Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you in the following situ-
ations:
When driving on dirt, gravel or snow-covered roads
When driving with tire chains
When driving over bumps in the road
When driving over roads with potholes or roads with uneven surfaces
TRC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
Hill-start assist control does not operate effectively when
Do not overly rely on the hill-start assist control. The hill-start assist control
may not operate effectively on steep inclines and roads covered with ice.

352 2-5. Driving information
YARIS_F (including HV)_WE_52C79ETransmission information
Vehicles with a Multidrive and multi-mode manual transmission:
To maintain engine braking efficiency, when using engine braking,
do not use the transmission in D. Transmission shift gear position
must be in 4 in the M mode. (P. 255, 260)
Vehicles with a manual transmission:
To maintain engine braking efficiency, when using engine braking,
do not use the transmission in 5 and 6 (vehicles with a 6-speed
manual transmission) gear. (P. 265)
If the engine overheats
Towing a loaded trailer up a long, steep incline in temperatures
exceeding 30C (85F) may result in the engine overheating. If the
high engine coolant temperature warning light flashes or comes
on, turn the air conditioning off immediately, leave the road and
stop the vehicle in a safe place. (P. 635)
When parking the vehicle
Always place wheel chocks under the wheels of both the vehicle
and trailer. Firmly set the parking brake and shift the shift lever to P
for Multidrives, E, M or R for multi-mode manual transmissions,
and 1 or R for manual transmissions.