2023 TOYOTA HIGHLANDER ECU

451-1. For safe use
1
For safety and security
WARNING
●Do not recline the front passen-
ger seatback so far that it
touches a rear seat. This may
cause the “PASS AIR BAG
OFF” indicator light to be illumi-
nated, which indicates that the
SRS airbags for the front pas-
senger will not activate in the
event of a severe accident. If
the seatback touches the rear
seat, return the seatback to a
position where it does not touch
the rear seat. Keep the front
passenger seatback as upright
as possible when the vehicle is
moving. Reclining the seatback
excessively may lessen the
effectiveness o f the seat belt
system.
●If an adult sits in the front pas-
senger seat, the “PASS AIR
BAG ON” indicator light is illumi-
nated. If the “PASS AIR BAG
OFF” indicator is illuminated,
ask the passen ger to sit up
straight, well back in the seat,
feet on the floor, and with the
seat belt worn correctly. If the
“PASS AIR BAG OFF” indicator
still remains illuminated, either
ask the passenger to move to
the rear seat, or if that is not
possible, move the front pas-
senger seat fully rearward.
●When it is unavoidable to install
a forward-facing child restraint
system on the fr ont passenger
seat, install the child restraint
system on the fr ont passenger
seat in the proper order.
(
P. 5 2 )
●Do not modify or remove the
front seats.
●Do not kick the front passenger
seat or subject it to severe
impact. Otherwise, the SRS
warning light m ay come on to
indicate a malfu nction of the
front passenger occupant clas-
sification system. In this case,
contact your Toyota dealer
immediately.
●Child restraint systems installed
on the rear seat should not con-
tact the front seatbacks.
●Do not use a seat accessory,
such as a cushion and seat
cover, that covers the seat
cushion surface.
●Do not modify or replace the
upholstery of the front seat.

471-1. For safe use
1
For safety and security
■Unoccupied
■There is a malfunction in the system
*1: The system judges a person of adult size as an adult. When a smaller
adult sits in the front passenger seat, the system may not recognize
him/her as an adult depending on his/her physique and posture.
*2: In the event the front passenger is wearing a seat belt.
*3: In the event the front passenge r does not wear a seat belt.
*4: For some children, child in seat, child in booster seat or chi ld in convert-
ible seat, the system may not recognize him/her as a child. Fac tors
which may affect this can be the physique or posture.
*5: Never install a rear-facing ch ild restraint system on the front passenger
seat. A forward-facing child restraint system should only be in stalled on
the front passenger sea t when it is unavoidable. ( P.50)
*6: In case the indicator light is not illuminated, consult this m anual on how
to install the child restr aint system properly. (P. 5 2 )
Indicator/warning
light
“PASS AIR BAG ON” and “PASS AIR BAG OFF” indicator lights“PASS AIR BAG OFF”
SRS warning light
OffDriver’s and front passenger’s seat belt reminder light
Devices
Front passenger airbag
DeactivatedSeat cushion airbag in the front passenger side
Indicator/warning light
“PASS AIR BAG ON” and “PASS AIR BAG OFF” indicator lights“PASS AIR BAG OFF”
SRS warning lightOn
Driver’s and front passenger’s seat belt reminder lightOff
Devices
Front passenger airbag
DeactivatedFront passenger seat cushion air- bag

491-2. Child safety
1
For safety and security
1-2.Child safety
Riding with children
Observe the following pre-
cautions when children are
in the vehicle.
Use a child restraint system
appropriate for the child,
until the child becomes
large enough to properly
wear the vehicle’s seat belt.
It is recommended that chil-
dren sit in the rear seats to
avoid accidental contact
with the shift lever, wiper
switch, etc.
 Use the rear door child-pro-
tector lock or the window
lock switch to avoid children
opening the door while driv-
ing or operating the power
window accidentally.
( P.118, 164)
 Do not let small children
operate equipment which
may catch or pinch body
parts, such as the power
window, hood, back door,
seats etc.
WARNING
■When children are in the vehi-
cle
Never leave children unattended
in the vehicle, and never allow
children to have or use the key.
Children may be able to start the
vehicle or shift the vehicle into
neutral. There is also a danger
that children ma y injure them-
selves by playing with the win-
dows, the moon roof or panoramic
moon roof, or other features of the
vehicle. In addition, heat build-up
or extremely cold temperatures
inside the vehicle can be fatal to
children.

511-2. Child safety
1
For safety and security
WARNING
●Toyota strongly urges the use of
a proper child restraint system
that conforms to the weight and
size of the child, installed on the
second seat. According to acci-
dent statistics, the child is safer
when properly restrained in the
second seat than in the front
seat.
●Holding a child in your or some-
one else’s arms is not a substi-
tute for a child restraint system.
In an accident, the child can be
crushed against the windshield
or between the holder and the
interior of the vehicle.
■Handling the child restraint
system
If the child restraint system is not
properly fixed in place, the child or
other passengers may be seri-
ously injured or even killed in the
event of sudden braking, sudden
swerving, or an accident.
●If the vehicle were to receive a
strong impact from an accident,
etc., it is possib le that the child
restraint system has damage
that is not readily visible. In
such cases, do not reuse the
restraint system.
●Make sure you have complied
with all installation instructions
provided with the child restraint
system manufacturer and that
the system is properly secured.
●Keep the child restraint system
properly secured on the seat
even if it is not in use. Do not
store the child restraint system
unsecured in the passenger
compartment.
●If it is necessary to detach the
child restraint system, remove it
from the vehicle or store it
securely in the luggage com-
partment.

531-2. Child safety
1
For safety and security
*: The third seats are not equipped with Child restraint LATCH anchors.
■When installing a child
restraint system to a front
passenger seatFor the safety of a child, install
child restraint systems to sec-
ond seats. When installing child
restraint system to a front pas-
senger seat is unavoidable,
adjust the seat as follows and
install the child restraint system.
Anchor brackets (for
top tether strap) attach- ment
8-seat models second seats:
P. 6 2
7-seat models second seats:
Third seats*:
Installation methodPage
When using a child
restraint system

551-2. Child safety
1
For safety and security
A child restraint system for a
small child or baby must itself be
properly restrained on the seat
with the lap portion of the
lap/shoulder belt.
■Installing child restraint
system using a seat belt
(child restraint lock func-
tion belt)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
■Rear-facing  Infant
seat/convertible seat
1 Adjust the rear seat
If there is a gap between the child
seat and the seatb ack, adjust the
seatback angle until good contact is
achieved.
WARNING
●Do not allow the child to lean
his/her head or any part of
his/her body against the door or
the area of the seat, front or rear
pillars, or roof side rails from
which the SRS side airbags or
SRS curtain shield airbags
deploy even if the child is
seated in the child restraint sys-
tem. It is dangerous if the SRS
side airbags and curtain shield
airbags inflate, and the impact
could cause death or serious
injury to the child.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Use child restraint system suit-
able to the age and size of the
child and install it to the rear
seat.
●If the driver’s seat interferes
with the child restraint system
and prevents it from being
attached correct ly, attach the
child restraint system to the
right-hand rear seat.
●Adjust the front passenger seat
so that it does not interfere with
the child restraint system.
Child restraint system
fixed with a seat belt

561-2. Child safety
2Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.
3 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
4 Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
5 While pushing the child
restraint system down into the rear seat, allow the shoul-
der belt to retract until the
child restraint system is
securely in place.
After the shoulder belt has
retracted to a poi
nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
6 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.59)
■Forward-facing  Convert-
ible seat
1 Adjust the seat
When using the front passen-
ger seat
If installing the child restraint
system to the front passenger
seat is unavoidable, refer to
P.53 for the front passenger seat
adjustment.
When using the rear seat
If there is a gap between the
child seat and the seatback,
adjust the seatback angle until
good contact is achieved.

571-2. Child safety
1
For safety and security
2Remove the head restraint if
it interferes with your child
restraint system. ( P.145)
3 Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
4 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt
and allow it to retract to put it in lock mode. In lock mode,
the belt cannot be extended.
6 While pushing the child
restraint system into the rear
seat, allow the shoulder belt
to retract until the child
restraint system is securely in
place.
After the shoulder belt has
retracted to a poi nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
7 If the child restraint has a top
tether strap, follow the child
restraint manufacturer’s
operation manual regarding
the installation, using the top
tether strap to latch onto the
top tether strap anchor.
( P.62)
8 After installing the child
restraint system, rock it back