key battery LEXUS NX300h 2015 Owner's Manual

555
8When trouble arises
NX300h_U_OM78007U 8-1. Essential information
Emergency flashers .................. 556
If your vehicle has to
be stopped in an
emergency................................. 557
8-2. Steps to take in an emergency
If your vehicle needs to
be towed .....................................558
If you think something is
wrong ........................................... 564
If a warning light turns on
or a warning buzzer
sounds.......................................... 565
If a warning message is
displayed..................................... 572
If you have a flat tire................... 575
If the hybrid system will not
start ...............................................589
If the shift lever cannot be
shifted from P............................. 591
If the electronic key does not
operate properly ..................... 592
If the 12-volt battery is
discharged ................................. 595
If your vehicle overheats ........ 600
If the vehicle becomes
stuck .............................................604

589
8
When trouble arises 8-2. Steps to take in an emergency
NX300h_U_OM78007UIf the hybrid system will not start One of the following may be the cause of the problem: ●
The electronic key may not be functioning properly.
(  P. 5 9 2 )●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. (  P. 8 3 )●
There may be a malfunction in the immobilizer system. (  P. 8 6 )●
There may be a malfunction in the steering lock system. ●
The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. (  P. 5 9 0 )
One of the following may be the cause of the problem: ●
The 12-volt battery may be discharged. (  P. 5 9 5 )●
The 12-volt battery terminal connections may be loose or corroded.
(  P. 5 1 2 )Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start ev en though the correct starting proce-
dure is being followed. (  P. 201)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

592 8-2. Steps to take in an emergency
NX300h_U_OM78007UIf the electronic key do es not operate properlyUse 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

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

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

658 What to do if... (Troubleshooting)
NX300h_U_OM78007UWhat to do if... (Troubleshooting) ●
If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. (  P. 1 2 0 )●
If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. (  P. 122)●
Is the electronic key battery weak or depleted? (  P. 5 3 2 )●
Is the power switch in ON mode?
When locking the doors, turn the power switch off. (  P. 202)●
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person. ●
The function may not operate properly du e to the condition of the radio wave.
(  P. 1 4 2 )
●
Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
(  P. 1 2 6 )If you have a problem, check the following before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

659What to do if... (Troubleshooting)
NX300h_U_OM78007U ●
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 3 )●
Is the 12-volt battery discharged? (  P. 5 9 5 )●
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 1 )●
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

664 Alphabetical index
NX300h_U_OM78007U Card key ..................................................... 118
Care
Aluminum wheels ............................. 485
Exterior................................................... 484
Interior .................................................... 488
Seat belts ............................................... 489
Cargo capacity........................... 182, 608
Cargo hooks .......................................... 450
Cargo net hooks ................................... 450
CD player ................................................ 367
Chains ....................................................... 327
Child-protectors.....................................126
Child restraint system............................ 60
Booster seats installation...................68
Convertible seats
installation .............................................. 67
Front passenger occupant
classification system ......................... 53
Infant seats definition ........................... 62
Infant seats installation ........................66
Installing CRS with LATCH
anchors ..................................................... 71
Installing CRS with seat
belts ..........................................................66
Installing CRS with top tether
strap.......................................................... 73
LATCH anchors ..................................... 71 Child safety ................................................ 59
12-volt battery
precautions ............................ 514, 599
Airbag precautions.............................. 43
Back door precautions.....................135
Child restraint system......................... 60
How your child should
wear the seat belt .............................. 36
Installing child restraints .................... 60
Moon roof precautions .................... 172
Power window lock switch.............166
Power window precautions .......... 168
Rear door child-p rotectors ............ 126
Removed key battery
precautions ....................................... 533
Seat belt extender
precautions .......................................... 39
Seat belt precautions .......................... 38
Seat heater precautions ................. 440
Cleaning ...................................... 484, 488
Aluminum wheels ..............................485
Exterior ................................................... 484
Interior .................................................... 488
Seat belts................................................489
Clock......................................................... 456C

666 Alphabetical index
NX300h_U_OM78007U 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 range
Function ..................................................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 .......................................... 610
Electric Power Steering (EPS)
Function ..................................................305
Warning light .......................................566
Electronic key
Battery-saving function ......................141
If the electronic key does not
operate properly ............................ 592
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.........................................595
If the electronic key does not
operate properly ............................ 592
If the hybrid system will
not start .............................................. 589 E

670 Alphabetical index
NX300h_U_OM78007U I/M test ..................................................... 497
Identification
Engine ....................................................... 610
Vehicle ................................................... 609
Ignition switch (Power switch) ......... 201
Illuminated entry system .................... 445
Immobilizer system................................. 86
Indicators .................................................... 92
Initialization
Engine oil maintenance data....... 506
Items to initialize..................................643
Tire pressure warning
system ................................................... 518
Inside rear view mirror .......................... 161
Instrument panel light control ............ 99
Interior lights........................................... 443
Switch....................................................... 444
Wattage ....................................................617
Intuitive parking assist
Function .................................................. 279
Warning message ............................. 572
Jack
Positioning a floor jack ..................... 501
Vehicle-equipped jack ...................576
Jack handle ............................................. 576
Jam protection function
Moon roof .............................................. 170
Power back door opener
and closer............................................ 138
Power windows ....................................167 Keyless entry
Smart access system with
push-button start ..............................140
Wireless remote control................... 118
Keys .............................................................. 118
Battery-saving function ......................141
Electronic key ......................................... 118
Engine switch ........................................201
If the electronic key does not
operate properly ............................ 592
If you lose your keys.................120, 122
Key number plate ................................. 118
Keyless entry ........................................... 118
Mechanical key...................................... 118
Power switch .........................................201
Replacing the battery ...................... 532
Warning buzzer.....................................141
Wireless remote control key .......... 118
Knee airbags ............................................. 40
Lane Departure Alert
with steering control (LDA) ..........270
Language (multi-information
display) .................................................. 638
LATCH anchors ........................................ 71
LDA (Lane Departure Alert
with steering control) .......................270
Lever
Auxiliary catch lever ........................ 500
Hood lock release lever................ 500
Shift lever ...............................................208
Turn signal lever ................................... 212
Wiper lever........................................... 228I
J K
L