
1613-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_U_OM0E013U
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the ground, or in a high place when the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear
bumper center when the back door is opened.
• The electronic key is on th e instrument panel, luggage co mpartment, floor, or in the
door pockets or glove box when the hybrid system is started or power switch modes
are changed.
●Do not leave the electronic key on top of th e instrument panel or near the door pockets
when exiting the vehicle. Depending on the radio wave reception conditions, it may be
detected by the antenna outs ide the cabin and the door will become lockable from the
outside, possibly trapping the electronic key inside the vehicle.
●As long as the electronic key is within th e effective range, the doors may be locked or
unlocked by anyone.
●Even if the electronic key is not inside the vehicle, it may be possible to start the hybrid
system if the electronic key is near the window.
●The doors may unlock if a large amount of wa ter splashes on the door handle, such as in
the rain or in a car wash when the electronic key is within the effective range. (The door
will automatically be locked after approx imately 60 seconds if the doors are not
opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the d oor may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock sensor while wearin g gloves may delay or prevent lock opera-
tion. Remove the gloves and touch the lock sensor again.
●When the lock operation is performed using the lock sensor, recognition signals will be
shown up to two consecutive times. After this, no recognition signals will be given.*
●If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In that case, follow the following correction
procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle. (Take care to ensure that the key is not stolen.)
• Set the electronic key to battery-saving mode to disable the smart access system with push-button start. ( P. 160)
●If the electronic key is inside the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-information display and a buzzer will
sound outside the vehicle. To turn off the alarm, lock all the doors.
●The lock sensor may not work properly if it comes into contact with ice, snow, mud, etc.
Clean the lock sensor and attempt to operate it again.
●A sudden approach to the effective range or door handle may prevent the doors from
being unlocked. In this case, return the door handle to the original position and check
that the doors unlock before pulling the door handle again.
●If there is another electronic key in the de tection area, it may take slightly longer to
unlock the doors after the door handle is gripped.

4836-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U
The 12-volt battery is located in the
left-hand side of luggage compart-
ment.Lift the deck board and attach the hook. ( P. 430)
Remove the cover after removing
the clips. Press
Pull out
12-volt battery
Location
Removing the 12-volt battery cover
1
2
1
2

644Alphabetical index
RX450h_U_OM0E013U
DrivingBreak-in tips ........................................ 206
Correct posture.....................................30
Driving mode select switch .......... 377
Hybrid vehicle driving tips.............387
Procedures ...........................................204
Winter drive tips ................................ 390
Driving position memory..................... 174 Memory recall function..................... 177
Power easy access system .............174
Dynamic radar cruise control ......... 323
Dynamic radar cruise control with full-speed range .......................... 311
E-Four ....................................................... 382
ECB (Electronically Controlled Brake System) ..................................... 381
Eco drive mode ......................................377
EDR (Event data recorder) .................... 11
Electric motor Location ..................................................... 76
Specification ........................................ 584
Electric Power Steering (EPS) ........ 381 Warning light .......................................537
Electronic key ..........................................132 Battery-saving function .................... 159
If the electronic key does not operate properly............................ 564
Replacing the battery ...................... 506 Electronically Controlled
Brake System (ECB) .........................381
Emergency flashers ............................ 528
Emergency, in case of If a warning buzzer sounds ..........536
If a warning light turns on ..............536
If a warning message is displayed ............................................ 543
If the 12-volt battery is discharged........................................ 568
If the electronic key does not operate properly ............................564
If the hybrid system will not start .................................................561
If you have a flat tire ..........................549
If you lose your keys................ 133, 135
If you think something is wrong...................................................535
If your vehicle becomes stuck...................................................... 578
If your vehicle has to be stopped in an
emergency ........................................ 529
If your vehicle needs to be towed ...................................................530
If your vehicle overheats ................ 574
Energy monitor ....................................... 124
E

647Alphabetical index
RX450h_U_OM0E013U
Horn .............................................................. 181
HUD (Head-up display) ....................... 118
Humidity sensor ......................................413
Hybrid battery air vent ............................81
Hybrid battery (traction battery)Location .................................................... 80
Specification ........................................ 585
Hybrid system ............................................76 Emergency shut off system............... 81
Energy monitor/consumption screen .......................124
EV drive mode.................................... 237
High voltage components .............. 80
Hybrid System Indicator .................100
Hybrid system precautions............. 80
Hybrid vehicle driving tips.............387
If the hybrid system will not start ......................................................... 561
Overheating .........................................574
Power (ignition) switch ................... 232
Regenerative braking ......................... 78
Starting the hybrid system ............. 232
Vehicle proximity notification system ..................................................... 77
Hybrid System Indicator..................... 100
Hybrid transmission ............................ 239 If the shift lever cannot be shifted from P .................................. 563
Paddle shift switches ............. 240, 241
S mode ......................................................241 I/M test ......................................................470
Identification
Engine .....................................................583
Vehicle ....................................................583
Ignition switch (power switch) .........232
Illuminated entry system ................... 420
Immobilizer system ................................ 85
Indicators .....................................................92
Initialization Engine oil maintenance data ....... 478
Items to initialize ...................................619
Power back door ............................... 150
Tire pressure warning system ................................................. 488
Inside rear view mirror.........................183
Instrument panel light control .............99
Interior lights ............................................ 417 Switch ........................................................418
Wattage ................................................ 590
Intuitive parking assist ........................ 339
Jack Positioning a floor jack.................... 474
Vehicle-equipped jack .................. 550
Jack handle ............................................. 550
Jam protection function Electronic sunshade.......................... 198
Moon roof ...............................................194
Panoramic moon roof...................... 198
Power back door openerand closer ........................................... 150
Power windows................................... 190I
J