2023 TOYOTA VENZA HYBRID ECU

731-4. Hybrid system
1
For safety and security
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 “MULTIME-
DIA OWNER’S MANUAL”.
■Predictive deceleration sup-
port
 When the vehicle approaches
to predictive deceleration sup-
port points registered in the
navigation system, “Refer-
ence operation range” ( ) of
the ECO Accelerator Guid-
ance ( P.103) on the multi-
information display will be
turned off to encourage the
driver to reduce excessive
acceleration.
Vehicles with 7-inch multi-infor-
mation display
Vehicles with 12.3-inch multi-
information display
 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
*: SOC means state of charge
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 A

751-4. Hybrid system
1
For safety and security
The illustration is an example for explanation and may differ from the actual
item.
Warning label
Service plug
Rear electric motor (traction motor)
Hybrid battery (traction battery)
High voltage cables (orange)
Front electric motor (traction motor)
Power control unit
Air conditioning compressor
Hybrid system precautions
Take care when handling the hybrid system, as it is a high
voltage system (about 650V at maximum) as well as contains
parts that become extremely hot when the hybrid system is
operating. Obey the warning labels attached to the vehicle.
System components
A
B
C
D
E
F
G
H

771-4. Hybrid system
1
For safety and security
WARNING
●If electric wires are exposed
inside or outside your vehicle,
an electric shock may occur.
Never touch exposed electric
wires.
●Do not touch the battery if liquid
is leaking from or adhering to it.
If electrolyte (carbonic-based
organic electrolyte) from the
hybrid battery (traction battery)
comes into contact with the
eyes or skin, it could cause
blindness or skin wounds. In the
unlikely event that it comes into
contact with the eyes or skin,
wash it off immediately with a
large amount of water, and seek
immediate medical attention.
●If electrolyte is leaking from the
hybrid battery (traction battery),
do not approach the vehicle.
Even in the unlikely event that
the hybrid battery (traction bat-
tery) is damaged, the internal
construction of the battery will
prevent a large amount of elec-
trolyte from leaking out. How-
ever, any electrolyte that does
leak out will give off a vapor.
This vapor is an irritant to skin
and eyes and could cause acute
poisoning if inhaled.
●Do not bring burning or high-
temperature items close to the
electrolyte.
The electrolyte may ignite and
cause a fire.
●If a fire occurs in the Hybrid
Electric Vehicle, leave the vehi-
cle 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 four wheels
raised. If the wheels connected
to the electric motor (traction
motor) are on the ground when
towing, the motor may continue
to generate electricity. This may
cause a fire. ( P.436)
●Carefully inspect the ground
under the vehicle. If you find
that liquid has l eaked onto the
ground, the fuel system may
have been damaged. Leave the
vehicle as soon as possible.
■Hybrid battery (traction bat-
tery)
●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.
●Your vehicle contains a sealed
lithium-ion battery.
Unless the battery is properly col-
lected, the following may occur,
resulting in dea th or serious
injury:
• The hybrid batte ry 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 Electric Vehicle. If the
hybrid battery is used outside of
your vehicle or modified in any
way, accidents such as electric
shock, heat generation, smoke
generation, an explosion and
electrolyte leakage may occur.

791-4. Hybrid system
1
For safety and security
mize the risk of electrocution
and fuel leakage. If the emer-
gency shut off system activates,
your vehicle will not restart. To
restart the hybrid system, con-
tact your Toyota dealer.
A message is automatically dis-
played 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.
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery is discon-
nected
The hybrid system may not start. In
this case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.
Hybrid warning message

801-5. Theft deterrent system
1-5.Theft deterrent system
The indicator light flashes after
the power switch has been
turned to off to indicate that the
system is operating.
The indicator light stops flashing
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
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.

811-5. Theft deterrent system
1
For safety and security
■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 are closed
before the alarm is set.
 No valuables or other per-
sonal items are left in the
vehicle.
■Setting
Close the doors, hood, and lock
all the doors. The system will be
set automatically after 30 sec-
onds.
The security indicator changes from being on to flashing when
the system is set.
If all doors are closed with hood
open, alarm system can be set.
■Canceling or stopping
Do one of the following to deac-
tivate or stop the alarm:
 Unlock the doors using the
entry function or wireless
remote control.
 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:
(Stopping the alarm deactivates the
alarm system.)
The doors are unlocked using the
mechanical key.
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:
 A locked door is unlocked or
opened in any way other
than using the entry func-
tion or wireless remote con-
trol. (The doors will lock
again automatically.)
 The hood is opened.
Setting/canceling/stop-
ping the alarm system

882-1. Instrument cluster
The indicators inform the driver
of the operating state of the
vehicle’s various systems.
Indicators
Turn signal indicator
( P.212)
(U.S.A.)
Headlight indicator
( P.219)
(Canada)
Tail light indicator
( P.219)
Headlight high beam indi-
cator ( P.221)
Automatic High Beam indi-
cator ( P.222)
Fog light indicator (if
equipped) ( P.225)
Smart key system indica-
tor
*1 (  P.201)
Cruise control indicator
(  P.265)
Dynamic radar cruise con-
trol indicator ( P.265)
Cruise control “SET” indi-
cator ( P.265)
(White)
LTA indicator*2 ( P.256)
(Green)
LTA indicator*2 ( P.239,
256)
(Orange)
(Flashes)LTA indicator*2 (  P.256)
Intuitive parking assist
OFF indicator
*3, 4 (if
equipped) ( P.288)
PKSB OFF indicator
*3, 5 ( i f
equipped) ( P.296)
(Flashes)
Slip indicator light*5
(  P.306)
VSC OFF indicator
*3, 5
(  P.307)
PCS warning light
*3, 5
(  P.239)
BSM outside rear view
mirror indicators
*5, 6
(  P.278)
BSM OFF indicator
*3, 5
(  P.278)
RCTA OFF indicator
*3, 5
(  P.278)
Brake hold standby indica-
tor
*5 (  P.217)
Brake hold operated indi-
cator
*5 (  P.217)
Security indicator
*7
(  P.80, 81)
“READY” indicator
(  P.201)
Low outside temperature
indicator
*8 (  P.98, 91)
EV indicator ( P.71)
(U.S.A.)
Parking brake indicator
( P.213)
(Canada)
Parking brake indicator
( P.213)

1373-2. Opening, closing and locking the doors
3
Before driving
3-2.Opening, closing and locking the doors
■Using the entry function
Carry the electronic key to
enable this function.
1 Grip the driver’s door handle
to unlock the door. Holding
the driver’s door handle for
approximately 2 seconds
unlocks all the doors.
Grip the front passenger’s
door handle or rear door han-
dle (some models) to unlock
all the doors
*.
Make sure to touch the sensor on
the back of the handle.
The doors cannot be unlocked for 3
seconds after the doors are locked.
*: The door unlock settings can be
changed. ( P.137)
2 Touch the lock sensor (the
indentation on the surface of
the door handle) to lock the
doors.
Check that the d oor is securely
locked.
■Using the wireless remote
control
1 Locks all the doors
Check that the d oor is securely
locked.
2 Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 5 seconds unlocks the
other doors.
Press and hold to open the side
windows.
*
*
: This setting must be customized at your Toyota dealer.
■Switching the door unlock func-
tion
It is possible to set which doors the
entry function unlocks using the
wireless remote control. Perform the
switching operation in the vehicle or
within approximately 3.2 ft. (1 m) of
the vehicle.
1 Turn the power switch to OFF.
2 When the indicator light on the
key surface is not on, press and
hold , or for
Side doors
The vehicle can be locked
and unlocked using the
entry function, wireless
remote control, door lock
switches or inside lock but-
tons.
Unlocking and locking the
doors from the outside