air filter LEXUS NX300h 2020 User Guide

3686-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78530_en
■When the card key battery needs to be
replaced (if equipped)
The battery for the card key is available only
at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-but-
ton start and wireless remote control will
not function properly.
●The operationa l range will be reduced.
Prepare the following before replacing
the battery:
Flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus
dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent
type recommended by the manufacturer.
●Dispose of used batteries according to
the local laws.
NOTICE
■When using the air conditioning sys-
tem
Make sure that a filter is always installed.
Using the air conditioning system without
a filter may cause damage to the system.
Electronic key battery
Replace the battery with a new one
if it is depleted.
Items to prepare

3987-2. Steps to take in an emergency
LEXUS NX300h Owners Manual_USA_M78530_enpedal has been depressed and the shift
lever is in N. Release the accelerator pedal
and shift the shift lever to D, S or R.
■If “Depress Brake When Vehicle Is
Stopped Hybrid Syst
em May Overheat”
is shown
Message is displayed when the accelerator
pedal is depressed to maintain the vehicle
position when stopped on a upward slope,
etc.
If this continues, th e hybrid system may
overheat.
Release the accelerator pedal and depress
the brake pedal.
■If “Front Camera Unavailable” or “Front
Camera Unavailable See Owner’s
Manual” is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. ( P.208, 389)
●PCS (Pre-Collision System)
●LTA (Lane Tracing Assist)
●LDA (Lane Departure Alert with steering
control)
●Automatic High Beam
●RSA (Road Sign Assist)
●Dynamic radar cruise control with full-
speed range
■If “RSA malfunction Visit Your Dealer” is
shown
The system may be malfunctioning. Have
the vehicle inspected by your Lexus dealer.
■If “Radar Cruise Control Unavailable
See Owner’s Manual” is shown
The dynamic radar cruise control with full-
speed range system is suspended tempo-
rarily or until the problem shown in the mes-
sage is resolved. (causes and coping
methods: P.208)
■If “Radar Cruise Control Unavailable” is
shown
The dynamic radar cruise control with full-
speed range system cannot be used tempo-
rarily. Use the system when it becomes
available again.
■If “Oil Maintenance Required Soon” is
shown
Indicates that the engine oil is scheduled to
be changed. (The indicator will not work
properly unless the oil maintenance data
has been reset.)
Check the engine oil, and change if neces-
sary. After changing th e engine oil, the oil
change system should be reset. ( P.348)
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be
changed. (After the engine oil is changed
and the oil maintenance data has been
reset.)
Check and change the en gine oil, and oil fil-
ter by your Lexus dealer. After changing the
engine oil, the oil change system should be
reset. ( P.348)
■If “See Owner’s Manual” is shown
●If the following messages are shown, fol-
lowing the instruct ions, accordingly.
• “Engine Coolant Temp High” ( P.416)
●If the following messages are shown,
there may be a malfunction.
Immediately have the vehicle inspected
by your Lexus dealer.
• “Hybrid System Malfunction”
•“Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Braking Power Low”
• “Smart Access System Malfunction”
●If “Aux Battery Low” is shown
• When the display goes off after several
seconds
*
Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
• When the display does not go off Start up the hybrid system using the pro-
cedures for “If the 12-volt battery is dis-
charged” ( P.412).
*: Displays for about 6 seconds
●If “Maintenance required for Traction bat-
tery cooling parts” is shown, the filters
may be clogged, the air intake vents may
be blocked, or there may be a gap in the
duct. Therefore, perform the following
correction procedure.
• If the air intake vents of the hybrid battery

LEXUS NX300h Owners Manual_USA_M78530_en
469Alphabetical Index
Alphabetical Index
A
A/C ................................................................... 289Air conditioning filter ............................... 367
Automatic air conditioning system ...289
Micro dust and pollen filter................... 294
S-FLOW mode.......................................... 294
ABS (Anti-lock Brake System).............. 270 Function .......................................................... 270
Warning light .............................................. 388
Active Sound Control (ASC) ..................187
AFS (Adaptive Front-lighting System) .. 191
Air conditioning filter ................................. 367
Air conditioning system ............................ 289 Air conditioning filter ............................... 367
Automatic air conditioning system ...289
Micro dust and pollen filter................... 294
S-FLOW mode.......................................... 294
Airbags ............................................................... 32 Airbag operating conditions................... 34
Airbag precautions for your child .........37
Airbag warning light ............................... 388
Correct driving posture ............................ 25
Curtain shield airbag operating condi-tions .................................................................. 34
Curtain shield airbag precautions ........37
Front passenger occupant classification system ............................................................... 41
General airbag precautions ....................37
Locations of airbags.....................................32
Modification and disposal of airbags . 40
Seat cushion airbag ......................................32 Side airbag operating conditions ......... 34
Side airbag precautions ............................ 37
Side and curtain shie
ld airbags operating
conditions ...................................................... 34
Side and curtain shield airbags precau- tions .................................................................. 37
SRS airbag instruct ions for Canadian
owners ........................................................ 456
SRS airbags...................................................... 32
SRS warning light...................................... 388
Alarm .................................................................... 77 Alarm....................................................................77
Anchor brackets ..................................... 55, 57
Antenna (Smart access system with push- button start) ..................................................126
Anti-lock brake system (ABS) ............... 270 Function .......................................................... 270
Warning light .............................................. 388
Approach warning...................................... 242
Armrest..............................................................319
ASC (Active Sound Control) ..................187
Assist grips .......................................................319
Automatic air conditioning system Air conditioning filter................................ 367
Automatic air conditioning system .. 289
Micro dust and pollen filter ................... 294
S-FLOW mode .......................................... 294
Automatic headlight leveling system ... 190
Automatic High Beam ................................192
Automatic light control system............... 190
Auxiliary box..................................................305