
3336-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care The 12-volt battery is located in the left-
hand side of luggage compartment.
■
Before recharging
When recharging, the 12-volt battery pro-
duces hydrogen gas which is flammable
and explosive. Therefore, observe the fol-
lowing precautions before recharging: ●
If recharging with the 12-volt battery
installed on the vehicle, be sure to discon-
nect the ground cable. ●
Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the 12-volt
battery. ■
After recharging/reconnecting the 12-
volt battery ●
The hybrid system may not start. Follow
the procedure below to initialize the sys-
tem.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the hybrid system.
●
Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the 12-volt battery. If this hap-
pens, use the wireless remote control or
the mechanical key to lock/unlock the
doors.
●
Start the hybrid system with the power
switch in ACCESSORY mode. The WARNING■
When adding washer fluid
Do not add washer fluid when the hybrid
system is hot or operating as washer fluid
contains alcohol and may catch fire if
spilled on the engine etc.
NOTICE■
Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying. ■
Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle. 12-volt battery
Location

450 Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_OM78212U Accessory mode .........................................170
Compartment ............................................. 327
Engine switch................................................ 168
Hood................................................................ 325
How to start the hybrid system ........... 168
Identification number ................................ 401
If your vehicle has to be stopped in an
emergency ............................................... 358
Ignition switch (power switch) ............. 168
Overheating................................................. 394
Power switch ................................................ 168
Engine compartment cover .................... 328
Engine coolant
Capacity .........................................................403
Checking .......................................................330
Preparing and checking before winter
......................................................................... 257
Warning light ...............................................366
Engine coolant temperature gauge ........79
Engine oil
Capacity ......................................................... 402
Checking ....................................................... 328
Warning light ...............................................366
Engine oil maintenance data .................. 329
Engine switch ................................................. 168
EPS (Electronic Power Steering)
Function ..........................................................250
Warning light ............................................... 367
EV drive mode................................................. 171
EV indicator ...................................................... 62
Event data recorder (EDR) ............................7 F
Flat tire ..............................................................377
Tire pressure warning system ............ 338
Floor mats .......................................................... 24
Fluid
Brake ............................................................... 405
Transmission................................................ 404
Washer ........................................................... 332
Fog lights
Replacing light bulbs ................................353
Switch................................................................ 189
Front passenger occupant classification
system ................................................................ 41
Front passenger’s seat belt reminder light
.......................................................................... 369
Front seats ........................................................128
Adjustment ..................................................... 128
Cleaning ...........................................................317
Correct driving posture ............................ 25
Driving position memory .........................134
Head restraints..............................................137
Power easy access system .....................134
Seat heaters .................................................. 276
Seat position memory ...............................134
Front side marker lights
Light switch .................................................... 183
Replacing light bulbs ................................354
Wattage ..........................................................407
Front turn signal lights
Replacing light bulbs ................... 353, 354
Turn signal lever ...........................................176
Wattage ..........................................................407
Fuel
Capacity .......................................................... 401
Fuel gauge ........................................................ 79
Gas station information ......................... 460
Information ................................................... 408
Refueling.......................................................... 196
Type ................................................................... 401
Warning light .............................................. 369
Fuel filler door .................................................196

457What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_OM78212U Alphabetical Index
457Replacing ........................................................377
Rotating tires ................................................ 337
Size....................................................................406
Snow tires ...................................................... 257
Spare tire............................................ 377, 406
Tire identification number .........................411
Tire pressure warning system .............338
Uniform Tire Quality Grading..............413
Warning light ............................................... 370
Tools.................................................................. 378
Top tether strap................................................57
Total load capacity ......................................400
Towing
Dinghy towing ............................................... 167
Emergency towing ...................................360
Towing eyelet .............................................. 362
Trailer sway control ..................................250
Trailer towing ...................................... 159, 167
TRAC (Traction Control) ........................ 250
Traction battery (Hybrid battery) ............ 64
Hybrid battery (traction battery) air
intake and discharge vents................... 66
Location............................................................. 64
Specification .................................................. 401
Warning messages ..................................... 67
Traction motor (electric motor) ................. 61
Trailer sway control .................................... 250
Trailer towing ........................................ 159, 167
Transmission
Hybrid transmission ................................... 173
Selecting a driving mode....................... 249
Trip meters .........................................................79
Turn signal lights
Replacing light bulbs....................353, 354
Turn signal lever ........................................... 176
Wattage.......................................................... 407
V
Vanity lights
Vanity lights ..................................................288
Wattage.......................................................... 407
Vanity mirrors ...............................................288 Vanity lights ................................................. 288
Vehicle data recordings ..................................7
Vehicle identification number ................400
Vehicle Stability Control (VSC) ........... 250
VSC (Vehicle Stability Control) ........... 250 W
Warning buzzers
Approach warning.................................... 223
Downshifting ..................................................176
Intuitive parking assist .............................. 232
Light reminder .............................................. 184
Open door ..................................................... 107
Seat belt reminder ........................ 369, 370
Vehicle sway warning ................................ 211
Warning lights
ABS ................................................................... 367
Brake hold operated indicator .......... 368
Brake Override System ...........................371
Brake system............................................... 365
Charging system....................................... 365
Drive-Start Control.....................................371
Electric power steering........................... 367
High coolant temperature.................... 366
LDA indicator ............................................. 368
Low engine oil pressure........................ 365
Low fuel level .............................................. 369
Malfunction indicator lamp .................. 366
Master warning light.................................370
Parking brake indicator ......................... 369
PCS warning light ..................................... 367
PKSB OFF indicator ............................... 368
Seat belt reminder light.............. 369, 370
Slip indicator ................................................ 368
SRS ................................................................... 366
Tire pressure ................................................370
Warning messages ..................................... 374
Washer
Checking ....................................................... 332
Low washer fluid warning message332,
374
Preparing and checking before winter