2018 LEXUS RX450h Owners Manual

1613-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL _U_OM48F85U■
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 th e 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 d oor 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.

162 3-2. Opening, closing and locking the doors
RX450h_RX450hL _U_OM48F85U●
Fingernails may scrape against the door duri ng operation of the do or handle. Be care-
ful not to injure fingernails or damage the surface of the door.
* : This setting can be customiz ed at your Lexus dealer.■
When the vehicle is not driven for extended periods ●
To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2 m) of the
vehicle. ●
The smart access system wi th push-button start can be deactivated in advance.
( → P. 736) ●
Setting the electronic key to battery-saving mode helps to reduce key battery deple-
tion. ( → P. 160)■
To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get the elec-
tronic key too close to the vehicle when operating the system from the outside of the
vehicle.
Depending on the position and holding condition of the elec tronic key, the key may not
be detected correctly and the system may not operate properly. (The alarm may go off
accidentally, or the door lock prevention may not operate.) ■
If the smart access system with push-button start does not operate properly ●
Locking and unlocking the doors: Use the mechanical key. ( → P. 692)●
Starting the hybrid system: → P. 693■
Customization
Some functions can be customized. ( → P. 736)■
If the smart access system with push-button start has been deactivated in a customized
setting ●
Locking and unlocking the doors:
Use the wireless remote cont rol or mechanical key. ( → P. 136, 142, 692)●
Starting the hybrid system and changing power switch modes: → P. 693●
Stopping the hybrid system: → P. 240

1633-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL _U_OM48F85U■
Certification for the smart access system with push-button start
Except for vehicles sold in Canada

164 3-2. Opening, closing and locking the doors
RX450h_RX450hL _U_OM48F85U 
For vehicles sold in Canada

1653-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL _U_OM48F85U

166 3-2. Opening, closing and locking the doors
RX450h_RX450hL _U_OM48F85UWARNING ■
Caution regarding interference with electronic devices●
People with implantable cardiac pacema kers, cardiac resynchronization therapy-
pacemakers or implantable cardioverter de fibrillators should keep away from the
smart access system with push-button start antennas. ( → P. 158)
The radio waves may affect the operation of such devices. If necessary, the entry
function can be disabled. Ask your Lexus dealer for details, such as the frequency of
radio waves and timing of the emitted radio waves. Then, consult your doctor to see if
you should disable the entry function. ●
Users of any electrical medical device ot her than implantable cardiac pacemakers,
cardiac resynchronization th erapy-pacemakers or implantable cardioverter defibril-
lators should consult the manufacturer of the device for information about its opera-
tion under the influence of radio waves.
Radio waves could have unexpected effects on the operation of such medical
devices.
Ask your Lexus dealer for details on disabling the entry function.

167
3
Operation of each component
RX450h_RX450hL _U_OM48F85U 3-3. Adjusting the seats
Seat position adjustment switch
Seat cushion (front) angle adjust-
ment switch
Vertical height adjustment switch
Seatback angle adjustment switch
Lumbar support firmness adjust-
ment switch
Lumbar support height adjustment
switch (if equipped)
Seat cushion length adjustment
switch (if equipped) ■
Power easy access system
The driver’s seat (on some models) and stee ring wheel move in accordance with power
switch mode and the driver’s seat belt condition. ( → P. 181)Front seats Adjustment procedure 1
2
3
4
5
6
7
WARNING ■
When adjusting the seat position ●
Take care when adjusting the seat position to ensure that other passengers are not
injured by the moving seat. ●
Do not put your hands under the seat or near the moving parts to avoid injury.
Fingers or hands may become jammed in the se at mechanism.●
Make sure to leave enough space around the feet so they do not get stuck. ■
Seat adjustment
To reduce the risk of sliding under the lap be lt during a collision, do not recline the seat
more than necessary.
If the seat is too reclined, the lap belt may slide past the hips and apply restraint forces
directly to the abdomen, or your neck may contact the shou lder belt, increasing the risk
of death or serious injury in the event of an accident.
Adjustments should not be made while drivin g as the seat may unexpectedly move and
cause the driver to lose control of the vehicle.

168 3-3. Adjusting the seats
RX450h_RX450hL _U_OM48F85U 
Manual seat
Seatback angle adjustment lever
Seat position adjustment lever 
Power seat
Seatback angle adjustment switch
Seat position adjustment leverRear seats Second-row seats (RX450h)
1
2
1
2