Page 594 of 681

594 8-2. Steps to take in an emergency
NX300h_U_OM78007U 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 immediatel y 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 5 )●
Check if battery-saving mo de is set. If it is se t, 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 597 of 681

5978-2. Steps to take in an emergency
8
When trouble arises
NX300h_U_OM78007U 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 the 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 )●
Make sure that the key is not inside the vehicle when recharging or replacing the
12-volt battery. The key may be locked in the vehicle if the alarm is activated. ( P. 88)5
6
7
8
9
10
Page 610 of 681
610 9-1. Specifications
NX300h_U_OM78007U ■
Engine number
The engine number is stamped on
the engine block as shown.
Front
Rear (AWD models)Engine Model 2.5 L 4-cylinder (2AR-FXE)
Ty p e 4-cylinder in line, 4-cycle, gasoline
Bore and stroke 3.54 3.86 in. (90.0 98.0 mm)
Displacement 152.2 cu.in. (2494 cm 3
)
Valve clearance (engine cold) Automatic adjustment
Drive belt tension Automatic adjustment
Fuel Fuel type Unleaded gasoline only
Octane Rating 87 (Research Octane Number 91) or higher
Fuel tank capacity (Reference) 14.8 gal. (56 L, 12.3 Imp.gal.)
Electric motor (traction motor) Ty p e Permanent magnet synchronous motor
Maximum output 105 kW
Maximum torque 199 ft•lbf (270 N•m, 27.5 kgf•m)
Ty p e Permanent magnet synchronous motor
Maximum output 50 kW
Maximum torque 103 ft•lbf (139 N•m, 14.2 kgf•m)
Page 614 of 681

614 9-1. Specifications
NX300h_U_OM78007U * : The fluid capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.
* : The fluid capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.
* : Minimum pedal clearance when depressed wi th a force of 110 lbf (490 N, 50.0 kgf)
while the hybrid system is operating.Hybrid transmission Fluid capacity
*
Front
4.0 qt. (3.8 L, 3.3 Imp.qt.)
Fluid type To y o t a G e n u i n e AT F W S
NOTICE ■
Transmission fluid type
Using transmission fluid other than “Toyot a Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Rear differential (Rear electric motor) (AWD models) Fluid capacity
* 1.9 qt. (1.8 L, 1.6 Imp.qt.)
Fluid type To y o t a G e n u i n e AT F W S
NOTICE ■
Transmission fluid type
Using transmission fluid other than “Toyot a Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Brakes Pe d a l c l e a r a n c e
* 4.13 in. (105 mm) Min.
Brake pad wear limit 0.04 in. (1.0 mm)
Pedal free play 0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid type FMVSS No. 116 DOT 3 or SAE J1703
Page 634 of 681
634 9-2. Customization
NX300h_U_OM78007U 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 2 )Customizable Features 1
2
3
4
Function Default
setting Customized
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-
tion Off O – O –
Speed linked
door locking
operation O – O –
Automatic door unlocking
function Shift position
linked door
unlocking oper-
ation Off O – O –
Driver’s door
linked door
unlocking oper-
ation O – O – 1 2 3 4
Page 635 of 681
6359-2. Customization
9
Vehicle specifications
NX300h_U_OM78007U ■
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 )Function Default
setting Customized
setting
Operation signal (emergency
flashers) On Off O – O –
Operation buzzer volume 5 Off
O – 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) On Off – – O – 1 2 3 4
Function Default
setting Customized
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 times As many as
desired ––O– 1 2 3 4
Page 636 of 681
636 9-2. Customization
NX300h_U_OM78007U ■
Wireless remote control ( P. 1 2 4 )
■
Automatic light control system ( P. 2 1 9 )
■
Lights (
P. 2 1 9 ) Function Default
setting Customized
setting
Wireless remote control On Off – – O –
Unlocking operation Driver’s door
unlocked in first
step, all doors
unlocked in
second step All doors
unlocked in first
step O–O–
Panic function On Off – – 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– 1 2 3 4
Function Default
setting Customized
setting
Light sensor sensitivity Standard -2 to 2 O – O –
Adjust the time elapsed
before the headlights auto-
matically turn off 30 seconds Off
O–O–
60 seconds
90 seconds 1 2 3 4
Function Default
setting Customized
setting
Daytime Running Lights
(Daytime running lights can
be disabled) On Off O – O – 1 2 3 4
Page 637 of 681
6379-2. Customization
9
Vehicle specifications
NX300h_U_OM78007U ■
Illumination ( P. 443)Function Default
setting Customized
setting
Time elapsed before the inte-
rior lights turn off 15 seconds Off
O–O–7. 5 s e c o n d s
30 seconds
Time elapsed before the exte-
rior lights turn off 15 seconds Off
O – O –7. 5 s e c o n d s
30 seconds
Operation after the power
switch is turned off On Off – – O –
Operation when the doors
are unlocked On Off – – O –
Operation when you
approach the vehicle with the
electronic key on your person On Off – – O –
Footwell lighting On Off – – O –
Fading out of the outer foot
lights when they turn off Long Short – – O – 1 2 3 4