TOYOTA AURIS HYBRID 2011 Owner's Guide

31 1-1. Hybrid system
1
Before driving
UK_AURIS_HV_EE
Regenerative braking
In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the recharging of the
hybrid battery (traction battery).
The accelerator pedal is released while driving with shift position D or B
selected.
The brake pedal is depressed while driving with shift position D or B
selected.
When stopped/during take-off
The gasoline engine stops when the vehicle is stopped. During
take-off, the electric motor (traction motor) drives the vehicle. At
slow speeds or when traveling down a gentle slope, the engine
is stopped and the motor is used.
During normal driving
The gasoline engine is predominantly used. The electric motor
(traction motor) charges the hybrid battery (traction battery) as
necessary.
When accelerating sharply
The power of the hybrid battery (traction battery) is added via
electric motor (traction motor) to that of the gasoline engine.
When braking (Regenerative brake)
The electric motor (traction motor) charges the hybrid battery
(traction battery).

32 1-1. Hybrid system
UK_AURIS_HV_EE
Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, the followings
are examples of conditions under which the engine may not stop automati-
cally:
The gasoline engine is warming up.
The hybrid battery (traction battery) is being charged.
The hybrid battery (traction battery) temperature is low or high.
The temperature setting of the air conditioning system is high.
Charging the hybrid battery (traction battery)
As the gasoline engine or regenerative brake charges the hybrid battery
(traction battery), the battery does not need to be charged from an out-
side source. However, if the vehicle is left parked for a long time the
hybrid battery will slowly discharge. For this reason, be sure to drive the
vehicle at least once every several months for at least 30 minutes or 16
km (10 miles). If the hybrid battery becomes fully discharged and you are
unable to jump-start the vehicle with the 12-volt battery, contact any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
If the shift position is in N, the hybrid battery (traction battery) will not be
charged. When driving in heavy traffic, operate the vehicle with the shift
position in D or B to avoid discharging the battery.
Charging the 12-volt battery
P. 478
After the 12-volt battery has discharged or has been changed or
removed
The gasoline engine may not stop even if the vehicle is running on the hybrid
battery (traction battery). If this continues for a few days, contact any autho-
rized Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional.

33 1-1. Hybrid system
1
Before driving
UK_AURIS_HV_EE
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sounds or vibration even though the vehicle is able
to move. Always push the P position switch and set the parking brake when
parked.
The following sounds or vibrations may occur when the hybrid system is
operating, and are not a malfunction.
Motor sounds may be heard from the engine compartment.
Sounds may be heard from the hybrid battery (traction battery) behind
the rear seat when the hybrid system starts or stops.
Sounds from the hybrid system may be heard when the back door is
open.
Sounds may be heard from the transmission when the gasoline engine
starts or stops, when driving at low speeds, or during idling.
Engine sounds may be heard when accelerating sharply.
Sounds may be heard due to regenerative brake when you press the
brake pedal or release the accelerator pedal.
Other sounds, such as motors and mechanical noises, may be heard
from the brake system when the brake pedal is depressed.
Vibration may be felt when the gasoline engine starts or stops.
You may hear cooling fan sounds coming from the air intake vents behind
the rear seat.
Maintenance, repair, recycling, and disposal
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional regarding maintenance, repair, recycling and dis-
posal. Do not dispose of the vehicle yourself.

34 1-1. Hybrid system
UK_AURIS_HV_EE
High voltage components
Take care when handling the hybrid system, as it contains a high volt-
age system (about 650 V at maximum) as well as parts that become
extremely hot when the hybrid system is operating. Obey the caution
labels attached to the vehicle.Air conditioning compressor
High voltage cables
(orange color)
Power control unit and
DC/DC converter
Caution labelService plug
Hybrid battery
(Traction battery)
Electric motor
(Traction motor)

35 1-1. Hybrid system
1
Before driving
UK_AURIS_HV_EEHybrid battery air vent
There is an air intake vent on the
side of the rear right seatback for
the purpose of cooling the hybrid
battery (traction battery). If the
vent becomes blocked, the
hybrid battery may overheat,
leading to a reduction in hybrid
battery output.
Emergency shut off system
The emergency shut off system blocks off the high voltage current
and stops the fuel pump to minimize the risk of electrocution and fuel
leakage when a certain level of impact is detected by the impact sen-
sor. If the emergency shut off system activates, your vehicle will not
restart. To restart the hybrid system, contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.

36 1-1. Hybrid system
UK_AURIS_HV_EE
Energy monitor
You can view the status of your
hybrid system on the multi-infor-
mation display (P. 200).
The following images are exam-
ples only, and may vary slightly
from actual conditions.
Press the
“DISP” switch on the steering wheel several times to
select the energy monitor display.
When the vehicle is powered by the
electric motor (traction motor)
When the vehicle is powered by both
the gasoline engine and the electric
motor (traction motor)
When the vehicle is powered by the
gasoline engine

37 1-1. Hybrid system
1
Before driving
UK_AURIS_HV_EE
Hybrid warning message
A message is automatically displayed when a malfunction occurs in
the hybrid system or an improper operation is attempted.
If a warning message is shown on the multi-information display, read
the message and follow the instructions. (P. 436)
When the vehicle is charging the hybrid
battery (traction battery)
When there is no energy flow
Hybrid battery (traction battery) statusLow Full

38 1-1. Hybrid system
UK_AURIS_HV_EE
If a warning light comes on or a warning message is displayed, or the
12-volt battery is disconnected
The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.
Electromagnetic waves
High voltage parts and cables on the hybrid vehicles incorporate electro-
magnetic shielding, and therefore emit approximately the same amount
of electromagnetic waves as conventional gasoline powered vehicles or
home electronic appliances.
Your vehicle may cause sound interference in some third party-produced
radio parts.
Consult any authorized Toyota dealer or repairer, or another duly quali-
fied and equipped professional before installing or removing third party-
produced radio parts.
Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be
started, refuel the vehicle with at least enough gasoline to make the low fuel
level warning light go off (P. 433). If there is only a small amount of fuel,
the hybrid system may not be able to start. (The minimum amount of fuel to
add to make the low fuel level warning light go out is about 12 L [3.2 gal., 2.7
Imp. gal.], when the vehicle is on a level surface. This value may vary when
the vehicle is on a slope.)
Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of
the hybrid battery (traction battery) can change in accordance with driving
style and driving conditions.

39 1-1. Hybrid system
1
Before driving
UK_AURIS_HV_EE
CAUTION
High voltage precautions
The vehicle has high voltage DC and AC systems as well as a 12-volt sys-
tem. DC and AC high voltage is very dangerous and can cause severe burns
and electric shock that may result in death or serious injury.
Never touch, disassemble, remove or replace the high voltage parts,
cables and their connectors.
The hybrid system will become hot after starting as the system uses high
voltage. Be careful of both the high voltage and the high temperature, and
always obey the caution labels attached to the vehicle.
Hybrid battery (traction battery)
Your vehicle contains a sealed nickel-metal hydride battery. If disposed of
improperly, it is hazardous to the environment and there is a risk of severe
burns and electrical shock that may result in death or serious injury.
Never try to open the service plug
access hole located in the luggage
compartment. The service plug is used
only when the vehicle is serviced and is
subject to high voltage.
Do not subject the service plug to
strong impacts. Also, avoid splashing
large amount of water onto the luggage
compartment, for example while in a
high-pressure car wash.

40 1-1. Hybrid system
UK_AURIS_HV_EE
CAUTION
Emergency shut off system
Carefully check to see if there are exposed high voltage parts or cables.
Never touch the parts or cables. (P. 34)
Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.
Road accident cautions
If your vehicle is involved in an accident, observe the following precautions
to reduce the risk of injury.
Stop the vehicle in a safe place to prevent subsequent accidents. While
depressing the brake pedal, apply the parking brake and push the P posi-
tion switch to stop the hybrid system. Then, slowly release the brake
pedal.
Do not touch the high voltage parts, cables and connectors.
If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
If a fluid leak occurs, do not touch it as it may be strong alkaline electrolyte
from the hybrid battery (traction battery). If it comes into contact with your
skin or eyes, wash it off immediately with a large amount of water or if pos-
sible, boric acid solution. Seek immediate medical attention.
If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible.
Never use a fire extinguisher that is not meant for electric fires. Using even
a small amount of water may be dangerous.
If your vehicle needs to be towed, do so with the front wheels raised. If the
wheels with the electric motor (traction motor) are on the ground when
towing, the motor may continue to generate electricity. This may cause an
electricity leakage leading to a fire. (P. 423)
Nickel-metal hydride battery
Your vehicle contains a sealed nickel-metal hydride battery. If disposed of
improperly, it is hazardous to the environment and there is a risk of severe
burns and electrical shock that may result in death or serious injury.