
5638-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift type truck
●Do not tow the vehicle from the rear when the power switch is off. The steering lock
mechanism is not strong enough to hold the front wheels straight.
●When raising the vehicle, ensure adequate ground clearance for towing at the oppo-
site end of the raised vehicle. Without adequate clearance, the vehicle could be dam-
aged while being towed.
■To prevent body damage when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■Recreational towing (behind motor home, etc)
Never dinghy tow your vehicle to prevent caus-
ing serious damage to the Hybrid AWD system
(AWD models) and transmission. ( P. 2 0 0 )

5668-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
Have the vehicle inspected by your Lexus dealer immediately.
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EP S (Electric Power Steering) sys-
tem
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
PCS warning light
Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will come on when the TRAC and VSC systems are turned off. ( P. 3 0 7 )
• The light will come on when the pre-collision system is turned off.
( P. 311)
• The light will flash when the sy stem cannot temporarily be used.
Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator light
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control system
The light will flash when the ABS, VSC or TRAC system is operat-
ing.
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator It is possible that the parking br ake is not fully engaged or released
Operate the parking brake switch once again.
This light comes on when the park ing brake is not released. If the
light turns off after the parking brake is fully released, the system is
operating normally.
Warning lightWarning light/Details/Actions

5688-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
*1: This light illuminates on the multi-information display.
*2: Driver’s and front passenger’s seat belt warning buzzer:The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the power switch is turned to ON mode, the buzzer sounds for
6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds
once. If the seat belt is st ill unfastened after 24 second s, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat be lt is still unfastened, the buzzer will sound
in a different tone for 20 more seconds.
The front passenger’s seat belt warning buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches
a speed of 12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the
buzzer will sound intermittently for 10 seconds. Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 20 more seconds.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front), side impact sensors (r ear), driver’s seat position sensor, driver’s
seat belt buckle switch, front passenger occupant classification system (ECU and sen-
sors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front passenger’s
seat belt buckle switch, driver ’s seat belt pretensioner, front passenger’s seat belt preten-
sioner and force limiter, airbags, interconnecting wiring and power sources. ( P. 4 0 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on th e seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient of the voltage temporarily drops,
the electric power steering system warnin g light may come on and the warning buzzer
may sound.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.

5708-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehi-
cle will become extremely unstable during braking, and the ABS system may fail, which
could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is restricted. When the
light comes on red, the assist to the power steering is lost and handling operations of
the steering wheel become extremely heavy. When steering wheel operations are
heavier than usual, grip the steering wheel firmly and operate it using more force than
usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

657What to do if... (Troubleshooting)
NX300h_OM_USA_OM78082U
●Did you press the power switch while firmly depressing the brake pedal?
(P. 2 0 1 )
●Is the shift position in P? ( P. 2 0 3 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 4 0 )
●Is the steering wheel unlocked? ( P. 2 0 3 )
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 5 9 2 )
●Is the 12-volt battery discharged? ( P. 5 9 4 )
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 5 9 0 )
●It is locked automatically to prevent theft of the vehicle. ( P. 2 0 4 )
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 1 6 6 )
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid system is not operating) for a period
of time. ( P. 2 0 3 )
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically

664Alphabetical index
NX300h_OM_USA_OM78082U
Drive information .................................. 103
Drive-start control .......................175, 210
Driver’s seat belt reminder light.......................................................... 567
Driver’s seat position memory ..........154
Driving Break-in tips ...........................................176
Correct posture.....................................30
Driving mode select switch ......... 303
Hybrid vehicle driving tips............. 324
Procedures .............................................174
Winter drive tips .................................326
Driving position memory.....................154 Memory recall function.................... 156
Dynamic radar cruise control Function ..................................................240
Warning message ............................. 572
Dynamic radar cruise control with full-speed rangeFunction ..................................................253
Warning message ............................. 572 ECB (Electronically Controlled
Brake System) .................................... 305
Eco drive mode..................................... 303
EDR (Event data recorder).....................11
E-Four ....................................................... 306
Electric motor Location ..................................................... 77
Specification ........................................ 608
Electric Power Steering (EPS) Function ..................................................305
Warning light .......................................566
Electronic key Battery-saving function ......................141
If the electronic key does not operate properly ..............................591
Replacing the battery ...................... 532
Electronically Controlled Brake System (ECB) ....................... 305
Emergency flashers ............................ 556
Emergency, in case of If a warning buzzer sounds ..........565
If a warning light turns on ..............565
If a warning message is displayed ............................................ 572
If the 12-volt battery is discharged......................................... 594
If the electronic key does not operate properly ..............................591
If the hybrid system will not start .............................................. 588E

665Alphabetical index
NX300h_OM_USA_OM78082U
If you have a flat tire ..........................575
If you lose your keys ................ 120, 122
If you think something is wrong .................................................. 564
If your vehicle becomes stuck ..................................................... 603
If your vehicle has to be stopped in an
emergency.........................................557
If your vehicle needs to be towed................................................... 558
If your vehicle overheats ............... 599
Energy monitor ..........................................111
Engine Accessory mode................................202
Compartment ..................................... 502
Engine switch ........................................ 201
Hood ....................................................... 500
How to start the hybrid system ................................................... 201
Identification number ...................... 608
If your vehicle has to be stopped in an emergency ..........557
Ignition switch (power switch).................................. 201
Overheating ........................................ 599
Power switch......................................... 201 Engine compartment cover............. 503
Engine coolant
Capacity .................................................... 611
Checking .............................................. 508
Preparing and checking before winter .................................... 326
Warning light .......................................565
Engine coolant temperature gauge ......................................................... 97
Engine oil Capacity ................................................ 609
Checking ...............................................504
Warning light .......................................565
Engine oil maintenance data ........... 506
Engine switch ........................................... 201
EPS (Electronic Power Steering) Function ..................................................305
Warning light .......................................566
EV drive mode ...................................... 206
EV indicator ............................................... 79
Event data recorder (EDR).....................11

667Alphabetical index
NX300h_OM_USA_OM78082U
Hands-free system (for cellular phone) ........................... 392
Head restraints ....................................... 158
Headlights .................................................219 Automatic headlight leveling .........221
Automatic High Beam .................... 223
Light switch ............................................ 219
Replacing light bulbs ............. 541, 552
Wattage ................................................... 615
Head-up display..................................... 106
Heated steering wheel .........................441
Heaters Automatic air conditioning system ................................................. 430
Heated steering wheel ................... 440
Outside rear view mirrors .............435
Seat heaters ......................................... 440
High mounted stoplight Replacing .............................................. 552
Hill-start assist control ........................305
Hood ..........................................................500 Warning message .................. 128, 572
Hooks Cargo hooks ....................................... 450
Retaining hooks (floor mat) ............. 28
Horn ............................................................ 160 Hybrid battery (traction battery)
Location ......................................................81
Specification ........................................ 609
Hybrid battery air vent .......................... 82
Hybrid system............................................ 77 Emergency shut off system ............. 82
Energy monitor/consumption screen.......................... 111
EV drive mode ................................... 206
High voltage components .................81
Hybrid System Indicator ................. 100
Hybrid system precautions ...............81
Hybrid vehicle driving tips ............ 324
If the hybrid system will not start....................................................... 588
Overheating.........................................599
Power switch .........................................201
Regenerative braking ..........................79
Starting the hybrid system...............201
Vehicle proximity notification system ..................................................... 78
Hybrid System Indicator .................... 100
Hybrid transmission ............................ 208
H