immobilizer LEXUS RX450H 2019 Owners Manual

TABLE OF CONTENTS2
RX450h_RX450hL_U
For your information................................... 8
Reading this manual................................... 14
How to search ..............................................15
Pictorial index............................................... 16
1-1. For safe useBefore 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.............. 204
1For safety and security
2Instrument cluster
3Operation of each
component

27
For safety and security1
RX450h_RX450hL_U
1-1. For safe useBefore 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

83
1
For safety and security
RX450h_RX450hL_U1-4. Theft deterrent system
The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the power switch has been turned to
ACCESSORY or ON mode to indi-
cate that the system has been canceled.
■System maintenance
The vehicle has a maintenance-fr
ee 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 registered to the security system (key
with a built-in transponder chip) of another vehicle
Immobilizer system
The vehicle’s keys have built-in transp onder 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 preven t vehicle theft but does not guarantee
absolute security agai nst all vehicle thefts.

841-4. Theft deterrent system
RX450h_RX450hL_U
■Certification for the immobilizer system
For vehicles sold in the U.S.A.

851-4. Theft deterrent system
1
For safety and security
RX450h_RX450hL_U
For vehicles sold in Canada
WARNING
■Certifications for the immobilizer system
Changes or modifications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
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.

1603-2. Opening, closing and locking the doors
RX450h_RX450hL_U
■Electronic Key battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from re ceiving radio waves.
■Conditions affecting operation
The smart access system with push-button st art, wireless remote control and immobilizer
system use weak radio waves. In the following situations, the communication between the
electronic key and the vehicle may be affect ed, preventing the smart access system with
push-button start, wireless remote control an d immobilizer system from operating prop-
erly. (Ways of coping: P. 692)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas st ation, radio station, large display, airport or
other facility that generates strong radio wave s or electrical noise
●When the electronic key is in contact with, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying the electronic key together with the following devices that emit radio
waves
• Portable radio, cellular phone, cordle ss phone or other wireless communication
devices
• Another vehicle’s electronic key, another electronic key of your vehicle, or a wireless
key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
●When the vehicle is parked in a pay parking spot where radio waves are emitted
Press twice while pressing and holding .
Confirm that the electronic key indicator flashes
4 times.
While the battery-saving mode is set, the smart
access system with push
-button start cannot be
used. To cancel the function, press any of the
electronic key buttons.

2414-2. Driving procedures
4
Driving
RX450h_RX450hL_U
If the hybrid system is stopped with the shift lever in a position other than P, the
power switch will not be turned off but instead be turned to ACCESSORY
mode. Perform the following proc edure to turn the switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that “Turn Off Vehicle” is disp layed on the multi-information display
and then press the power switch once.
Check that “Turn Off Vehicle” on th e multi-information display is off.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON mode (the
hybrid system is not operating) for more than an hour with the shift lever in P, the power
switch will automatically turn off. However, th is function cannot entirely prevent 12-volt
battery discharge. Do not leave the vehicle with the power switch in ACCESSORY or
ON mode for long periods of time when the hybrid system is not operating.
■Sounds and vibrations specific to a hybrid vehicle
P. 77
■Electronic key battery depletion
P. 134
■When the ambient temperature is low, su ch as during winter driving conditions
When starting the hybrid system, the flashing time of the “READY” indicator may be
long. Leave the vehicle as it is until the “REA DY” indicator is steady on, as steady means
the vehicle is able to move.
■Conditions affe cting operation
 P. 160
■Note for the entry function
P. 161
■If the hybrid system does not start
●The immobilizer system may no t have been deactivated. (P. 83)
Contact your Lexus dealer.
●Check that the shift lever is se curely set in P. The hybrid system may not start if the shift
lever is displaced out of P. “To Start Vehicle, Put Shift Lever into P” will be displayed on
the multi-information display.
When stopping the hybrid system with the shift lever in a position other
than P
1
2
3
4

6908-2. Steps to take in an emergency
RX450h_RX450hL_U
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. ( P. 692)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 83)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( P. 691)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 695)
●The 12-volt battery terminal connections may be loose or corroded.
( P. 691)
If the hybrid system will not start
Reasons for the hybrid system not star ting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( P. 239)
The interior lights and headlights are d im, or the horn does not sound or
sounds at a low volume.

779Alphabetical index
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I/M test ..................................................... 592
ICS (Intelligent Clearance Sonar) .................................................... 342 Indicator..................................................... 92
Warning light .......................................662
Warning messages.............. 346, 353
Identification Engine ........................................................ 712
Vehicle ....................................................... 711
Ignition switch (power switch) ........ 239
Illuminated entry system ..................... 531
Immobilizer system................................. 83
Indicators .................................................... 90
Initialization Engine oil maintenance data....... 600
Items to initialize.................................. 749
Power back door ................................ 150
Tire pressure warning system ................................................... 612
Inside rear view mirror .......................... 191
Instrument panel light control ............ 98
Intelligent Clearance Sonar (ICS) ....................................................... 342 Indicator..................................................... 92
Warning light .......................................662
Warning messages.............. 346, 353
Interior lights........................................... 528 Switch.......................................................529
Wattage ....................................................719
Intuitive parking assist......................... 332 Jack
Positioning a floor jack....................596
Vehicle-equipped jack ................... 674
Jack handle .............................................. 674
Jam protection function Electronic sunshade.........................205
Moon roof ...............................................201
Panoramic moon roof.....................205
Power back door openerand closer ........................................... 150
Power windows.................................... 197
IJ
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

788Alphabetical index
RX450h_RX450hL_U
Tachometer ............................................... 96
Tail lightsLight switch .......................................... 258
Replacing light bulbs ........................637
Talk switch ..................................... 471, 493
Telephone switch.................................... 471
Theft deterrent system Alarm...........................................................86
Immobilizer system ..............................83
Tire inflation pressure Maintenance data ................................ 717
Warning light .......................................662
Tire information ..................................... 723 Glossary .................................................730
Size ............................................................ 726
Tire identification number.............. 725
Uniform Tire Quality Grading...............................................728
Tire pressure warning system Initializing................................................. 612
Installing tire pressure warning valves and transmitters ................. 612
Registering ID codes ........................ 613
Warning light .......................................662 Tires .............................................................. 611
Chains .......................................................391
Checking .................................................. 611
Glossary................................................. 730
If you have a flat tire .......................... 673
Inflation pressure...................... 620, 717
Replacing ............................................... 673
Rotating tires ........................................... 611
Size ............................................................. 717
Snow tires .............................................. 392
Spare tire...................................... 673, 717
Tire identification number ............. 725
Tire pressure warning system ....... 612
Uniform Tire Quality Grading.... 728
Warning light ....................................... 662
Tools ........................................................... 674
Top tether strap ........................................70
Total load capacity................................. 710
Touchless power back door .............. 144
Towing Dinghy towing ..................................... 238
Emergency towing ........................... 654
Towing eyelet ......................................656
Trailer Sway Control ....................... 382
Trailer towing............................ 224, 237
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