roof LEXUS RX450h 2018 Owners Manual

TABLE OF CONTENTS
2
RX450h_RX450hL _U_OM48F85UFor your information................................... 8
Reading this manual................................... 14
How to search ..............................................15
Pictorial index............................................... 16
1-1. For safe use
Before driving ................................ 28
For safe driving .............................. 30
Seat belts .......................................... 32
SRS airbags ..................................... 36
Front passenger occupant
classification system ..................47
Exhaust gas precautions............ 53
1-2. Child safety
Riding with children ..................... 54
Child restraint systems ............... 55
1-3. Hybrid system
Hybrid system features ...............74
Hybrid system precautions....... 78
1-4. Theft deterrent system
Immobilizer system ...................... 83
Alarm ................................................. 86
2. Instrument cluster
Warning lights and
indicators....................................... 90
Gauges and meters ..................... 96
Multi-information display .......... 101
Head-up display ............................ 118
Energy monitor/
consumption screen ................124 3-1. Key information
Keys ...................................................132
3-2. Opening, closing and
locking the doors
Side doors.......................................136
Power back door ......................... 142
Smart access system with
push-button start...................... 158
3-3. Adjusting the seats
Front seats ...................................... 167
Rear seats ...................................... 168
Driving position memory........... 181
Head restraints ............................ 186
3-4. Adjusting the steering
wheel and mirrors
Steering wheel ............................. 189
Inside rear view mirror ............... 191
Outside rear view mirrors .......193
3-5. Opening, closing the
windows and moon roof
Power windows ............................196
Moon roof..................................... 200
Panoramic moon roof.............. 2041
For safety and security
2
Instrument cluster 3
Operation of each
component

12
RX450h_RX450hL _U_OM48F85UThe SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with th e airbags and seat belt pretensioners left as
they are, this may cause an accident such as fire. Be sure to have the systems of the SRS
airbag and seat belt pretensioner removed and disposed of by a qualified service shop or
by your Lexus dealer befo re you scrap your vehicle.
Special handling may apply, See www.dt sc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.Scrapping of your Lexus
Perchlorate Material WARNING ■
General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol and
certain drugs delay reaction time, impair judgment and reduce coordination, which
could lead to an accident that could result in death or serious injury.
Defensive driving: Always driv e defensively. Anticipate mistakes that other drivers or
pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to drivin g. Anything that distracts the
driver, such as adjusting controls, talking on a cellular phone or reading can result in a
collision with resulting death or serious in jury to you, your occupants or others.■
General precaution rega rding children’s safety
Never leave children unattended in the vehicl e, and never allow child ren to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by playing with the windows, 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.

26 Pictorial index
RX450h_RX450hL _U_OM48F85UAuxiliary box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 539
Interior light
* 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 529
Personal lights
* 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 530
Moon roof switches
* 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 200
Panoramic moon roof switches
* 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 204
“SOS” button
* 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 571
Vanity mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 547
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 547
Inside rear view mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 191
Garage door opener switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 560
* 1
: If equipped.
* 2
: The illustration shows the front, but they are also equipped in the rear.1
2
3
4
5
6
7
8

40 1-1. For safe use
RX450h_RX450hL _U_OM48F85UWARNING ■
SRS airbag precautions ●
Improperly seated and/or restrained infant s and children can be killed or seriously
injured by a deploying airbag. An infant or child who is too small to use a seat belt
should be properly secured using a chil d restraint system. Lexus strongly recom-
mends that all infants and children be placed in the rear seats of the vehicle and prop-
erly restrained. The rear se ats are safer for infants an d children than the front
passenger seat. ( → P. 55)●
Do not sit on the edge of the seat or lean
against the dashboard. ●
Do not allow a child to stand in front of the
SRS front passenger airbag unit or sit on the
knees of a front passenger. ●
Do not allow the front seat occupants to hold
items on their knees. ●
Do not lean against the door, the roof side rail
or the front, side and rear pillars.
●
Do not allow anyone to kneel on the passen-
ger seat toward the door or put their head or
hands outside the vehicle.

411-1. For safe use
1
For safety and security
RX450h_RX450hL _U_OM48F85UWARNING ■
SRS airbag precautions
●
Do not hang coat hangers or other hard obje cts on the coat hooks. All of these items
could become projectiles and may cause deat h or serious injury, should the SRS cur-
tain shield airbags deploy. ●
If a vinyl cover is put on the area where the SRS knee airbag will deploy, be sure to
remove it. ●
Do not use seat accessories which cover the parts where the SRS side airbags and
SRS seat cushion airbag inflate as they may interfere with inflatio n of the SRS airbags.
Such accessories may prevent the side airbags and SRS seat cushion airbag from
activating correctly, disable the system or cause the side airbags and SRS seat cush-
ion airbag to inflate accidentally, re sulting in death or serious injury.●
Do not strike or apply significant levels of force to the areas around the SRS airbag
components or the front doors.
Doing so can cause the SRS airbags to malfunction. ●
Do not touch any of the component part s immediately after the SRS airbags have
deployed (inflated) as they may be hot. ●
If breathing becomes difficult after the SR S airbags have deployed, open a door or
window to allow fresh air in, or leave the vehicl e if it is safe to do so. Wash off any resi-
due as soon as possible to prevent skin irritation. ●
If the areas where the SRS airbags are stored, such as the steering wheel pad and
front and rear pillar garnishes, are damaged or cracked, have them replaced by your
Lexus dealer. ●
Do not place anything, such as a cushion, on the front passenger’s seat. Doing so will
disperse the passenger’s weight, which prevents the sensor from detecting the pas-
senger’s weight properly. As a result, the SRS front airb ags for the front passenger
may not deploy in the event of a collision. ●
Do not attach anything to or lean anything
against areas such as the dashboard, steering
wheel pad and lower po rtion of the instru-
ment panel.
These items can become projectiles when the
SRS driver, front passeng er and knee airbags
deploy. ●
Do not attach anything to areas such as a
door, windshield, side windows, front or rear
pillar, roof side rail and assist grip.

42 1-1. For safe use
RX450h_RX450hL _U_OM48F85U■
If the SRS airbags deploy (inflate) ●
Slight abrasions, burns, brui sing etc., may be sustained from SRS airbags, due to the
extremely high speed deployment (inflation) by hot gases. ●
A loud noise and white powder will be emitted. ●
Parts of the airbag module (steering wheel hub, airbag cover and inflator) as well as the
front seats, parts of the front and rear pillars, and roof side rails, may be hot for several
minutes. The airbag itself may also be hot. ●
The windshield may crack. ●
For Lexus Enform Safety Connect subscribers, if any of the following situations occur,
the system is designed to send an emerge ncy call to the response center, notifying
them of the vehicle’s location (without needing to push the “SOS” button) and an agent
will attempt to speak with the occupants to ascertain the level of emergency and assis-
tance required. If the occupants are unable to communicate, the agent automatically
treats the call as an emergency and helps to dispatch the necessary emergency ser-
vices. ( → P. 571)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe rear-end collision.WARNING ■
Modification and disposal of SRS airbag system components
Do not dispose of your vehicle or perform any of the following modifications without
consulting your Lexus dealer. The SRS airb ags may malfunction or deploy (inflate)
accidentally, causing death or serious injury. ●
Installation, removal, disassembly and repair of the SRS airbags ●
Repairs, modifications, removal or replacement of the steering wheel, instrument
panel, dashboard, seats or seat upholstery, front, side and rear pillars, roof side rails,
front door panels, front door trims, or front door speakers ●
Modifications to the front door panel (such as making a hole in it) ●
Repairs or modifications of the front fend er, front bumper, or side of the occupant
compartment ●
Installation of a grille guard (bull bars, ka ngaroo bar, etc.), snow plows, winches or
roof luggage carrier ●
Modifications to the vehicle’s suspension system ●
Installation of electronic devices such as mobile two-way radios and CD players●
Modifications to your vehicle for a person with a physical disability

46 1-1. For safe use
RX450h_RX450hL _U_OM48F85U●
A portion of a door or its surrounding area is
damaged, deformed or has had a hole made in
it, or the vehicle was involved in an accident
that was not severe enough to cause the SRS
side and curtain shield airbags to inflate. ●
The pad section of the steering wheel, dash-
board near the front passenger airbag or
lower portion of the instrument panel is
scratched, cracked, or otherwise damaged. ●
The front passenger’s se at cushion surface is
scratched, cracked, or otherwise damaged.
●
The surface of the seats with the SRS side air-
bag is scratched, crac ked, or otherwise dam-
aged.
●
The portion of the front pillars, rear pillars or
roof side rail garnishes (padding) containing
the SRS curtain shield airbags inside is
scratched, cracked, or otherwise damaged.

54
RX450h_RX450hL _U_OM48F85U1-2. Child safety
●
It is recommended that children sit in the rear seats to avoid accidental con-
tact 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 driving or operating the power window acci-
dentally. ●
Do not let small children operate equipment which may catch or pinch body
parts, such as the power wind ow, hood, back door, seats etc.
Riding with children Observe the following precautions wh en 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.
WARNING
Never leave children unattended in the vehicl e, and never allow child ren to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by playing with the windows, 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.

60 1-2. Child safety
RX450h_RX450hL _U_OM48F85UWARNING ■
When using a child restraint system
If the head restraint interferes with the inst allation of the child restraint system, and the
head restraint can be removed, remove the head restraint.
If the head restraint cannot be remove d, raise it to the uppermost position.
●
When a booster seat is installed, always en sure 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 coul d fall off the child’s shoulder.●
Use child restraint system suitable to the age and size of the child and install it to the
rear seat. ●
A forward-facing child restraint system may
be installed on the front passenger seat only
when it is unavoidable. When installing a for-
ward-facing child restrain t system on the front
passenger seat, raise the seatback as much as
possible, move the seat to the rearmost posi-
tion, and raise the seat to the highest position,
even if the “AIR BAG OFF” indicator light is
illuminated. ●
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 air-
bags or SRS curtain shield airbags deploy
even if the child is seat ed in the child restraint
system. 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.
●
If the driver’s seat interferes with the child
restraint system and prevents it from being
attached correctly, atta ch 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.

871-4. Theft deterrent system
1
For safety and security
RX450h_RX450hL _U_OM48F85U■
System maintenance
The vehicle has a maintenance-free type alarm system. ■
Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing: ●
Nobody is in the vehicle. ●
The windows and moon roof or panoramic mo on roof are closed before the alarm is
set. ●
No valuables or other personal items are left in the vehicle.■
Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■
Alarm-operated door lock
In the following cases, depending on the si tuation, the door may automatically lock to
prevent improper entry into the vehicle: ●
When a person remaining in the vehicle un locks the door and the alarm is activated.●
While the alarm is activated, a person re maining in the vehicl e unlocks the door.●
When recharging or replacing the 12-volt battery ●
A person inside the vehicle opens a door or
hood, or unlocks the vehicle.
●
The 12-volt battery is recharged or replaced
when the vehicle is locked. ( → P. 698)
NOTICE ■
To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.