Page 591 of 680
591
8
When trouble arises
8-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
If the electronic key do es not operate properly
Use the mechanical key (P. 119) to perform the following operation
■Unlocking the door
Insert the mechanical key while pull-
ing on the driver’s door handle.
Unlocking the door.
Remove the key, return the handle, and then pull the handle again.
If communication between the electron ic key and vehicle is interrupted
( P. 142) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors can be opened and
the hybrid system can be started by following the procedure below.
Locking and unlocking the doors
1
2
3
Page 592 of 680
5928-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
■Locking the doorMove the inside lock button to the
lock position.
Close the door.
■Key linked functions
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
When the electronic key is detected, a
buzzer sounds and the power switch will
turn to ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the power switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and
check that message shown on the
multi-information display.
1
Closes the windows and moon roof*
(turn and hold)
Opens the windows and moon roof
*
(turn and hold)
*: These settings must be customized at your
Lexus dealer.
Starting the hybrid system
2
1
2
1
2
3
Page 593 of 680

5938-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
Press the power switch.
In the event that the hybrid system st ill cannot be operated, contact your Lexus
dealer.
■Stopping the hybrid system
Set the parking brake, shift the shift lever to P and press the power switch as you normally
do when stopping the hybrid system.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 5 3 2 )
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system. If a door is
unlocked using the mechanical key when the al arm system is set, the alarm may be trig-
gered.
■Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and mode s will be changed each time the switch is
pressed. ( P. 202)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the custom ization setting. If it is off, turn the function on.
(Customizable features P. 6 3 3 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 1 4 2 )
WA R N I N G
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
4
3
Page 594 of 680
5948-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
If the 12-volt battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your vehicle by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the situa-
tion, the alarm may activate and the
doors may lock. ( P. 8 9 )
Open the hood ( P. 5 0 0 ) a n d f u s e
box cover.
Open the exclusive jump starting
terminal cover.
The following procedures may be used to start the hybrid system if the vehi-
cle’s 12-volt battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
1
2
3
Page 596 of 680

5968-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of your vehicle with the power switch off.
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator light does not
come on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Close the exclusive jump starting terminal cover, and reinstall the fuse box
cover to its original position.
Once the hybrid system starts, have th e vehicle inspected at your Lexus dealer
as soon as possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and th e draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When the 12-volt battery is removed or discharged
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the 12-volt battery is discharged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is
reconnected, the system will return to the mode it was in before the 12-volt battery was
discharged. Before disconnecting the 12-volt battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery.
●The power back door must be initialized. ( P. 1 3 4 )
6
7
8
9
10
11
Page 632 of 680
6329-2. Customization
NX300h_OM_USA_OM78082U
Settings that can be changed using the Remote Touch or Lexus Display Audio
controller
Settings that can be changed us ing the multi-information display
Settings that can be changed by your Lexus dealer
Settings that can be changed using the vehicle switch
Definition of symbols: O = Available, – =Not available
■Door lock ( P. 1 2 4 , 5 9 1 )
Customizable Features
1
2
3
4
FunctionDefault
settingCustomized setting
Unlocking using a mechanical
key
Driver’s door
unlocked in first
step, all doors
unlocked in
second step
All doors
unlocked in first
step––O–
Automatic door locking func-
tion
Shift position
linked door
locking opera-
tionOffO–O–
Speed linked
door locking
operationO–O–
Automatic door unlocking
function
Shift position
linked door
unlocking oper-
ationOffO–O–
Driver’s door
linked door
unlocking oper-
ation
O–O–
1234
Page 633 of 680
6339-2. Customization
9
Vehicle specifications
NX300h_OM_USA_OM78082U
■Smart access system with push-button start and wireless remote control
( P. 124, 140)
■Smart access system with push-button start ( P. 1 4 0 )
FunctionDefault
settingCustomized setting
Operation signal (emergency
flashers)OnOffO–O–
Operation buzzer volume5OffO–O–1 to 7
Time elapsed before the auto-
matic door lock function is
activated if a door is not
opened after being unlocked
60 seconds
Off
O–O–30 seconds
120 seconds
Open door reminder buzzer
(When locking the vehicle)OnOff––O–
1234
FunctionDefault settingCustomized setting
The doors that are unlocked
using the smart access system
with push-button start can be
selected Driver’s door All the doors O – O O
Smart access system with
push-button start On Off – – O –
Number of consecutive door
lock operations 2 timesAs many as
desired ––O–
1234
Page 634 of 680
6349-2. Customization
NX300h_OM_USA_OM78082U
■Wireless remote control ( P. 1 2 4 )
■Automatic light control system ( P. 2 1 9 )
■Lights (P. 2 1 9 )
FunctionDefault
settingCustomized setting
Wireless remote control OnOff – – O –
Unlocking operation Driver’s door
unlocked in first
step, all doors
unlocked in
second stepAll doors
unlocked in first
step
O–O–
Panic function OnOff – – O –
The function that validates the switch of the wireless
remote control when locking
the door ( P. 1 2 9 ) When locking
the door
When unlock-
ing the door
––O–
1234
FunctionDefault
settingCustomized setting
Light sensor sensitivityStandard-2 to 2O–O–
Adjust the time elapsed
before the headlights auto-
matically turn off 30 seconds
Off
O–O–
60 seconds
90 seconds
1234
FunctionDefault settingCustomized setting
Daytime Running Lights
(Daytime running lights can
be disabled)OnOffO–O–
1234