2015 LEXUS RX450h key

1241-7. Theft deterrent system
Immobilizer system The vehicle's keys have built-in tran sponder chips that prevent the hybrid
system from starting if the 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 prev ent vehicle theft but does not guaran-
tee absolute security ag ainst all vehicle thefts.
Vehicles with a navigation system or the Lexus Display Audio sys-
tem
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 indicate that the
system has been canceled.
Vehicles without a navigation sy stem or the Lexus Display Audio
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 indicate that the
system has been canceled.

1261-7. Theft deterrent system
Alarm The system sounds the alarm and flashe s the lights when forcible entry is
detected.
■ Triggering of the alarm
The alarm is triggered in the follow ing situations when the alarm is
set:
● A locked door is unlocked or open ed in any way other than using
the entry function, wireless r emote control or mechanical key.
(The doors will lock again automatically.)
● The hood is opened.
■ Setting the alarm system
Vehicles with a navigation system or the Lexus Display Audio sys-
tem Close the doors and hood, and
lock all the doors.
The system will be set automati-
cally after 30 seconds.
The indicator light changes from
being on to flashing when the
system is set.
Vehicles without a navigation sy stem or the Lexus Display Audio
system
Close the doors and hood, and
lock all the doors.
The system will be set automati-
cally after 30 seconds.
The indicator light changes from
being on to flashing when the
system is set.

1281-7. Theft deterrent system
■
Tr i g g e r i n g o f t h e a l a r m
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■
Alarm-operated door lock ●
When the alarm is operating, the door s are locked automatically to prevent
intruders.●
Do not leave the key inside the vehicle when the alarm is operating, and make
sure the key is not inside the vehicle when recharging or replacing the 12-volt
battery.
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. ●
A person inside the vehicle opens a door
or the hood.
●
The 12-volt battery is recharged or
replaced when the vehicle is locked.

1662-1. Driving procedures
Driving the vehicle
Starting off on a steep uphill
Make sure that the pa rking brake is set and shift the shift lever to
D.
Gently depress the accelerator pedal.
Release the parking brake. The following procedures should be observed to ensure safe driving.
■ Starting the hybrid system
 P. 177
■ Driving
With the brake pedal depressed, shift the shift lever to D.
(  P. 1 8 6 )
Release the parking brake. (  P. 195)
Gradually release the brake pedal and gently depress the
accelerator pedal to accelerate the vehicle.
■ Stopping
With the shift lever in D, depress the brake pedal.
If necessary, set the parking brake. If the vehicle is to be stopped for an extended period of time, shift the
shift lever to P. (
 P. 1 8 6 )
■
Parking the vehicle
With the shift lever in D, depress the brake pedal.
Set the parking brake. (  P. 1 9 5 )
Shift the shift lever to P. (  P. 1 8 6 )If parking on a hill, block the wheels as needed.
Press the “POWER” switch to stop the hybrid system.
Lock the door, making sure that you have the electronic key on
your person.STEP 1
STEP 2
STEP 3
STEP 1
STEP 2
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 1
STEP 2
STEP 3

1772-1. Driving procedures
2
When driving Power (ignition) switch Performing the following operations when carrying the electronic key on
your person starts the hybrid system or changes “POWER” switch modes.
■ Starting the hybrid system
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal. The “POWER” switch indicator will turn green. If the indicator does
not turn green, the hybrid system cannot be started.
Press the “POWER” switch. After a while, the “READY” indi-
cator comes on with a beep
sound.
The vehicle can move when the
“READY” indicator is on even if
the engine is stopped.
Continue depressing the brake
pedal until the hybrid system is
completely started.
The hybrid system can be
started from any “POWER”
switch mode.
Check that the “READY” indicator is on.
The vehicle will not move when the “READY” indicator is off.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

1792-1. Driving procedures
2
When driving When stopping the hybrid system with the shift lever in a position other than P
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 procedure to turn the switch
off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that the indicator on the “POWER” switch is illuminated in
amber and then press the “POWER” switch once.
Check that the indicator on the “POWER” switch is off.■
Auto power off function
When the shift lever is in P, if the vehicle is left in ACCESSORY or ON mode with
the hybrid system not operating for more than 20 minutes (ACCESSORY mode)
or one hour (ON mode), the “POWER” switch will automatically turn off. However,
this function cannot entirely prevent 12-v olt 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.■
Operation of the “POWER” switch
When operating the “POWER” switch, one short, firm press is enough. If the switch
is pressed improperly, the hybrid system may not start or the “POWER” switch
mode may not change. It is not necessary to press and hold the switch.■
Sounds and vibrations specific to a hybrid vehicle
 P. 3 3■
Electronic key battery depletion
 P. 6 5
■
When the ambient temperature is low, such as during winter driving conditions
It may take time until the “READY” indicator comes on.
■
Conditions affecting operation
 P. 6 2STEP 1
STEP 2
STEP 3
STEP 4

1802-1. Driving procedures
■
Note for the entry function
 P. 6 3■
If the hybrid system does not start
The immobilizer system may not have been deactivated. (  P. 1 2 4 )
Contact your Lexus dealer.■
Steering lock
After turning the “POWER” switch off and opening and closing the doors, the
steering wheel will be locked due to th e steering lock function. Operating the
“POWER” switch again automatically cancels the steering lock.■
When the steering lock cannot be released
■
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended
if the hybrid system is turned on and off re peatedly in a short period of time. In this
case, refrain from operating the hybrid sy stem. After about 2 seconds, the steering
lock motor will resume functioning.■
When the “POWER” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.■
If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the “POWER” switch
with the shift lever in P and the brake pe dal depressed, contact your Lexus dealer
immediately.
■
If the hybrid system is malfunctioning
 P. 74 4
■
If the electronic key battery is depleted
 P. 6 8 7 The green indicator light on the “POWER”
switch will flash and a message will be shown
on the multi-information display. Press the
“POWER” switch again while turning the
steering wheel left and right.

2202-3. Operating the lights and windshield wipers
■
Automatic light off system ●
When the headlights are on: The headlights and tail lights turn off 30 seconds
after a door is opened and closed if the “POWER” switch is turned to ACCES-
SORY mode or turned off. (The lights turn off immediately if on the key is
pressed after all the doors are locked.)●
When only the tail lights ar e on: The tail lights turn off automatically if the
“POWER” switch is turned to ACCESSORY mode or turned off and the
driver’s door is opened.
To turn the lights on again, turn the “POWER” switch to ON mode, or turn the light
switch off once and then back to or .
If any of the doors is kept open, the ligh ts automatically turn off after 20 minutes.■
Automatic headlight leveling system (if equipped)
The level of the headlights is automatica lly adjusted according to the number of
passengers and the loading condition of the vehicle to ensure that the headlights do
not interfere with other road users. ■
Light reminder buzzer (headlights)
A buzzer sounds when the “POWER” switch is turned off or turned to ACCES-
SORY mode and the driver's door is open ed while the headlights are turned on.■
Illuminated entry system
If the wireless remote control switch is used to unlock the vehicle when the light
switch is in and the surrounding area is dark, the parking light turns on.■
Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features  P. 825)
NOTICE■
To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.