2021 TOYOTA RAV4 HYBRID ECU

751-4. Hybrid system
1
For safety and security
*: This function can only be used in
the mainland U.S.A. It cannot be
used in other states and territo-
ries, including Alaska and Hawaii.
This system operates based on
the driving situation and traffic
information to enhance fuel
economy.
For details about Predictive effi-
cient drive, refer to “NAVIGA-
TION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Predictive deceleration sup-
port
 When the vehicle approaches
to predictive deceleration sup-
port points registered in the
navigation system, the “Refer-
ence operation range” ( ) of
the ECO Accelerator Guid-
ance ( P.105) on the multi-
information display will be
turned off to encourage the
driver to reduce excessive
acceleration.
 The engine braking force will be increased according to the
driving conditions to more effi-
ciently charge the hybrid bat-
tery (traction battery) after the
accelerator pedal is released.
■Predictive SOC control
The following types of control
are performed based on data
such as road and traffic informa-
tion during route guidance by
the navigation system to help
ensure that the vehicle effi-
ciently uses electricity.
 When there is a long downhill
slope along the route, the sys-
tem reduces the hybrid bat-
tery (traction battery) level
before reaching the slope to
help ensure charging capacity
for regenerative braking while
traveling downhill.
 When traffic congestion is
predicted along the route, the
system helps ensure a certain
battery level before reaching
congested roads to reduce
the frequency of starting the
engine to charge the hybrid
battery (traction battery) due
to low battery levels.
Predictive efficient drive
(vehicles with navigation
system)
*
A

771-4. Hybrid system
1
For safety and security
■Running out of fuel
When the vehicle has run out of fuel
and the hybrid system cannot be
started, refuel th e vehicle with at
least enough gasoline to make the
low fuel level warning light ( P.649)
go off. If there is only a small
amount of fuel, th e hybrid system
may not be able to start. (The stan-
dard amount of fuel is about 2.3 gal.
[8.8 L, 1.9 Imp.gal.], when the vehi-
cle is on a level surface. This value
may vary when the vehicle is on a
slope. Add extra fuel when the vehi-
cle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on
hybrid vehicles incorporate elec-
tromagnetic shielding, and there-
fore emit approximately the same
amount of electromagnetic waves
as conventional gasoline pow-
ered vehicles or home electronic
appliances.
●Your vehicle may cause sound
interference in so me third party-
produced radio parts.
■Hybrid battery (tr action battery)
The hybrid battery (traction battery)
has a limited service life. The lifes-
pan of the hybrid battery (traction
battery) can change in accordance
with driving style and driving condi-
tions.
■Starting the hybrid system in an
extremely cold environment
When the hybrid battery (traction
battery) is extremely cold (below
approximately -22°F [-30°C]) under
the influence of t he outside tem-
perature, it may no t be possible to
start the hybrid system. In this case,
try to start the hyb rid system again
after the temperature of the hybrid
battery increases due to the outside
temperature increase etc.
WARNING
■High voltage precautions
This vehicle has high voltage DC
and AC systems as well as a 12-
volt system. DC and AC high volt-
age 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 volt-
age parts, cables or their con-
nectors.
●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 warning labels
attached to the vehicle.
●Never try to open the service
plug access hole located under-
neath the rear seats. The ser-
vice plug is used only when the
vehicle is serviced and is sub-
ject to high voltage.
■Road accident cautions
Observe the following precautions
to reduce the risk of death or seri-
ous injury:
●Pull your vehicle off the road,
shift the shift le ver to P, apply
the parking brake, and turn the
hybrid system off.
●Do not touch the high voltage
parts, cables and connectors.

791-4. Hybrid system
1
For safety and security
There is an air intake vent under
the right side of the rear seat for
the purpose of cooling the
hybrid battery (traction battery).
If the vent is blocked,
charging/discharging of the
hybrid battery (traction battery)
may become limited.
WARNING
●Never resell, hand over or mod-
ify the hybrid battery. To prevent
accidents, hybrid batteries that
have been removed from a dis-
posed vehicle are collected
through Toyota dealer. Do not
dispose of the battery yourself.
Unless the battery is properly col-
lected, the follo wing may occur,
resulting in dea th or serious
injury:
• The hybrid battery may be ille- gally disposed of or dumped,
and it is hazardous to the envi-
ronment or someone may touch
a high voltage part, resulting in
an electric shock.
• The hybrid battery is intended to be used exclusively with your
hybrid vehicle. If the hybrid bat-
tery is used outside of your
vehicle or modifi ed in any way,
accidents such as electric
shock, heat generation, smoke
generation, an explosion and
electrolyte leakage may occur.
When reselling or handing over
your vehicle, the possibility of an
accident is extremely high
because the person receiving the
vehicle may not be aware of these
dangers.
●If your vehicle is disposed of
without the hybrid battery hav-
ing been removed, there is a
danger of serious electric shock
if high voltage parts, cables and
their connectors are touched. In
the event that your vehicle must
be disposed of, the hybrid bat-
tery must be disposed of by
your Toyota dealer or a qualified
service shop. If the hybrid bat-
tery is not dispos ed of properly,
it may cause electric shock that
can result in death or serious
injury.
Hybrid battery (traction
battery) air intake vent
NOTICE
■Hybrid battery (traction bat-
tery) air intake vent
●Make sure not to block the air
intake vent with anything, such
as a seat cover, plastic cover, or
luggage. If the vent is blocked,
the charging/discharging of the
hybrid battery (traction battery)
may become limited.
●When dust etc. has accumu-
lated in the air intake vent, clean
it with a vacuum cleaner to pre-
vent the vent from clogging.
●Clean the air intake vent regu-
larly to prevent the charging/dis-
charging of the hybrid battery
(traction battery) from being
restricted.

811-5. Theft deterrent system
1
For safety and security
1-5.Theft deterrent system
Vehicles without smart key
system
The indicator light flashes after
the key has been removed from
the power switch to indicate that
the system is operating.
The indicator light goes off after
the registered key has been
inserted into the power switch to
indicate that the system has
been canceled.
Vehicles with smart key sys-
tem
The indicator light flashes after
the power switch has been
turned to OFF to indicate that
the system is operating.
The indicator light goes off after
the power switch has been
turned to ACC or ON to indicate
that the system has been can-
celed.
■System maintenance
The vehicle has a maintenance-free
type immobilizer system.
■Conditions that may cause the
system to malfunction
●If the grip portion of the key is in
contact with a metallic object
●If the key is in close proximity to or
touching a key to the security sys-
tem (key with a built-in transpon-
der chip) of another vehicle
Immobilizer system
The vehicle’s keys have
built-in transponder chips
that prevent the hybrid sys-
tem from starting if a key
has not been previously
registered in the vehicle’s
on-board computer.
Never leave the keys inside
the vehicle when you leave
the vehicle.
This system is designed to
help prevent vehicle theft but
does not guarantee absolute
security against all vehicle
thefts.
Operating the system

831-5. Theft deterrent system
1
For safety and security
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

841-5. Theft deterrent system
*: If equipped
■Items to check before lock-
ing the vehicle
To prevent unexpected trigger-
ing of the alarm and vehicle
theft, make sure of the following:
 Nobody is in the vehicle.
 The side windows and moon
roof (if equipped) or pan- oramic moon roof (if
equipped) are closed before
the alarm is set.
 No valuables or other per-
sonal items are left in the
vehicle.
■Setting
Close the doors and hood, and
lock all the doors. The system
will be set automatically after 30
seconds.
The security indicator changes from
being on to flashing when the sys-
tem is set.
■Canceling or stopping
Do one of the following to deac-
tivate or stop the alarm:
 Unlock the doors.
 Turn the power switch to ACC
or ON, or start the hybrid sys-
tem. (The alarm will be deacti-
vated or stopped after a few
seconds.)
■System maintenance
The vehicle has a maintenance-free
type alarm system.
■Triggering of the alarm
The alarm may be triggered in the
following situations:
Alarm*
The alarm uses light and
sound to give an alert when
an intrusion is detected.
The alarm is triggered in the
following situations when
the alarm is set:
 Vehicles without smart key
system: A locked door is
unlocked or opened in any
way other than using the
wireless remote control or
key. (The doors will lock
again automatically.)
 Vehicles with smart key
system: A locked door is
unlocked or opened in any
way other than using the
entry function, wireless
remote control or mechani-
cal key. (The doors will lock
again automatically.)
 The hood is opened.
Setting/canceling/stop-
ping the alarm system

851-5. Theft deterrent system
1
For safety and security
(Stopping the alarm deactivates the
alarm system.)
●A person inside the vehicle opens
a door or hood, or unlocks the
vehicle using an inside lock but-
ton.
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. (P.672)
■Alarm-operated door lock
In the following cases, depending
on the situation, th e door may auto-
matically lock to p revent improper
entry into the vehicle:
●When a person remaining in the
vehicle unlocks the door and the
alarm is activated.
●While the alarm is activated, a
person remaining in the vehicle
unlocks the door.
●When recharging or replacing the
12-volt battery.
■Customization (Canada only)
The alarm can be set to activate
when the key (vehicles without
smart key system) or mechanical
key (vehicles with smart key sys-
tem) is used to unlock. (Customiz-
able features:  P.707)
NOTICE
■To ensure the system oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

922-1. Instrument cluster
*1: This light illuminates on the multi-information display with a
message.
*2: Depending on the operating con-ditions of the system, the color
and state (illuminat ed/blinking) of
the indicator change.
*3: The light comes on when the system is turned off.
*4: Intuitive parking assist OFF indi-cator turns on wh en the power
switch is turned t o ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
*5: These lights tu rn on when the
power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is on,
or after a few seconds. There
may be a malfunction in a sys-
tem if the lights do not turn on, or
turn off. Have the vehicle
inspected by your Toyota dealer.
*6: This light illuminates on the out- side rear view mirrors.
*7: When the outside temperature is approximately 37°F (3°C) or
lower, the indicator will flash for
approximately 10 seconds, then
stay on.
*8: This light illuminates on the cen-ter panel.
(Flashes)
Slip indicator light*5
(  P.370)
VSC OFF indicator
*3, 5
(  P.370)
PCS warning light
*3, 5
(  P.252)
BSM outside rear view
mirror indicators
*5, 6 ( i f
equipped) ( P.283)
BSM indicator (if
equipped) ( P.283)
RCTA OFF indica-
tor
*3, 5 (if equipped)
(  P.283)
Brake hold standby
indicator
*5 (  P.227)
Brake hold operated
indicator
*5 (  P.227)
Security indicator
(  P.81, 84)
“READY” indicator
(  P.210, 212)
Low outside tempera-
ture indicator
*7
(  P.95, 101)
EV indicator ( P.73)
(U.S.A.)
Parking brake indica-
tor ( P.224)
(Canada)
Parking brake indica-
tor ( P.224)
EV drive mode indica-
tor ( P.217)
Eco drive mode indi-
cator ( P.366)
Sport mode indicator
( P.366)
Trail Mode indicator
(  P.367)
“AIR BAG ON/OFF”
indicator
*5, 8 (  P.45)