
418What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.354)
If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.354)
Is the electronic key battery weak or
depleted? ( P.318)
Is the engine switch
in IGNITION ON mode
When locking the doors, turn the engine
switch
Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio wave. (
P.115)
The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.112)
Did you press the engine switch
depressing the brake pedal?
( P.146, 149)
Is the shift position in P? ( P.155,
161)
Is the electronic key anywhere
detectable inside the vehicle?
( P.114)
Is the steering wheel unlocked?
( P.147, 150)
Is the electronic key battery weak or
depleted?
In this case, the engine
be started in a temporary way. ( P.356)
Is the 12-volt battery discharged?
( P.357)
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 trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine
not start
The steering wheel cannot be
turned after the engine

419What to do if... (Troubleshooting)
It is locked automatically to prevent
theft of the vehicle. ( P.147, 150)
Is the window lock switch pressed?
The power window at the passenger’s seat
cannot be operated if the window lock
switch is pressed. ( P.133)
The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode
not running
( P.149, 152)
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.339)
The parking brake indicator is on
Is the parking brake released? ( P.168)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.335, 344)
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
P.71)
To stop the alarm, turn the engine
switch
ON mode
engine
Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.344)
When a warning light turns on or a
warning message is displayed, refer
to P.335, 344.
Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.350)
Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.370)
The windows do not open or
close by operating the power
window switches
The engine switch
cally
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

Alphabetical index423
If the engine will not start .........................351
If the hybrid system will not start ........ 352
If your vehicle has to be stopped in an
emergency ................................................ 326
Ignition switch (engine switch) .............146
Ignition switch (power switch) ..............149
Overheating.....................................364, 366
Power switch .................................................149
Engine coolant.............................................. 296 Capacity ......................................................... 376
Checking ....................................................... 296
Preparing and checking before winter
......................................................................... 238
Engine coolant temperature gauge ....... 80
Engine immobilizer system ........................ 69
Engine oil ........................................................ 293 Capacity ......................................................... 374
Checking ....................................................... 293
Preparing and checking before winter
......................................................................... 238
Warning light ...............................................335
Warning message..................................... 347
Engine oil maintenance data .................. 295
Engine oil temperature gauge .................. 80
Engine switch (power switch) ........146, 149 Auto power off function ................ 149, 152
Changing the engine switch (power
switch) modes................................. 148, 152
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the engine (hybrid system) 146,
149
EPS (Electric Power Steering) .............. 232 Function .......................................................... 232
Warning light ............................................... 336
EV drive mode................................................153
Event data recorder (EDR) ........................... 8
EV indicator ...................................................... 62
F
First-aid kit storage belt ............................ 262
Flat tire ............................................................. 350 Tire pressure warning system .............303 Floor mats ...........................................................22
Fluid
Automatic transmission .......................... 377
Brake ................................................................378
Hybrid transmission.................................. 377
Washer .......................................................... 298
Footwell light ................................................. 258
Front passenger occupant classification system .............................................................. 38
Front seats ........................................................120 Adjustment ..................................................... 120
Cleaning ......................................................... 277
Correct driving posture ............................ 23
Driving position memory ......................... 122
Head restraints............................................. 125
Jam protection function ............................. 121
Memory recall function.............................123
Seat heaters ..................................................255
Seat position memory ............................... 122
Seat ventilators ............................................255
Front side marker light ................................ 173 Light switch .....................................................173
Replacing light bulbs ................................ 324
Front turn signal lights ................................. 167 Replacing light bulbs ................................ 324
Turn signal lever ...........................................167
Fuel ......................................................................182 Capacity ......................................................... 373
Fuel gauge ....................................................... 80
Fuel pump shut off system.....................334
Information ..................................................... 381
Refueling.......................................................... 182
Type .................................................................. 373
Warning light ...............................................339
Fuel consumption Average fuel consumpt ion after refueling
.............................................................................85
Average fuel economy ..............................85
Current fuel consumption ........................85
Fuel filler door .................................................182 If the fuel filler do or cannot be opened
..........................................................................354

424Alphabetical index
Refueling ..........................................................182
Fuel gauge ......................................................... 80
Fuel pump shut off system........................ 334
Fuses ...................................................................319
G
Garage door opener ................................. 266
Gauges ............................................................... 80
Glove box ....................................................... 260
Glove box light ............................................. 260
Grocery bag hooks .................................... 262
H
Headlights ........................................................ 173 Automatic High Beam system.............. 176
Light switch ..................................................... 173
Replacing light bulbs................................ 324
Headlights aim .............................................. 323
Head restraints ...............................................125
Head-up display.............................................. 90
Heated steering wheel .. ............................ 255
Heaters Air conditioning system.......................... 248
Heated steering wheel............................ 255
Outside rear view mirrors .................... 249
Seat heaters .................................................. 255
High-voltage components ......................... 64
Hill-start assist control ............................... 232
Hood ................................................................. 290 Open ...............................................................290
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 262
Coat hooks ................................................... 265
Grocery bag hooks ................................. 262
Retaining hooks (floor mat)......................22
Horn .................................................................... 127
Hybrid battery (traction battery) Location............................................................. 64
Specification ................................................. 374
Warning message........................................ 67 Hybrid battery (traction battery) air vents
..............................................................................67
Hybrid system .................................................... 61 Emergency shut off system...................... 67
Energy monitor/consumption screen95
EV drive mode............................................. 153
High voltage components ....................... 64
Hybrid System Indicator ........................... 94
Hybrid system precautions...................... 64
Hybrid vehicle driving tips ....................236
If the hybrid system will not start ........352
Overheating ................................................. 367
Power (ignition) switch ............................ 149
Regenerative braking ................................. 62
Starting the hybrid system ...................... 149
Vehicle proximity noti fication system. 63
Hybrid System Indicator.............................. 94
Hybrid transmission....................................... 161 M mode ........................................................... 166
Paddle shift switches .......................165, 166
Snow mode.................................................... 165
I
I/M test ............................................................ 287
IdentificationEngine.............................................................. 372
Vehicle ............................................................ 372
Ignition switch (engine switch).................146 Auto power off function........................... 149
Changing the engine switch modes . 148
If your vehicle has to be stopped in an emergency .................................................326
Starting the engine ..................................... 146
Ignition switch (power switch) .................149
Auto power off function........................... 152
Changing the power switch modes . 152
If your vehicle has to be stopped in an emergency .................................................326
Starting the hybrid system ...................... 149
Illuminated entry system ........................... 258
Immobilizer system........................................ 69
Indicators ............................................................76

Alphabetical index429
Stop lightsReplacing light bulbs................................ 324
Storage feature ............................................ 260
Stuck If the vehicle becomes stuck................ 370
Sunshade......................................................... 265
Sun visors ........................................................ 264
Switches “SOS” button .................................................. 54
Active rear wing switch .......................... 229
Automatic High Beam system.............. 176
Brake Hold switch ........................................171
BSM (Blind spot monitor) switch........ 221
Door lock switches .................................... 108
Driving mode select switch .................... 213
Driving position memory switches ..... 122
Dynamic radar cruise control with full-speed range switch ............................... 204
Emergency flashers switch ................... 326
Engine switch.................................................146
EV drive mode switch ..............................153
Garage door opener switches .......... 266
Heated steering wheel switch.............255
HUD (Head-up display) switch............ 90
Ignition switch..................................... 146, 149
Instrument panel light control switch.. 83
Intuitive parking assist switch.................215
Light switches ................................................ 173
LKA (Lane-Keeping Assist) switch ... 198
Meter control switches ..............................85
Outside rear view mirror switches ..... 129
Paddle shift switches . 159, 160, 165, 166
Parking brake switch ................................ 168
PCS OFF switch ........................................... 191
Power door lock switch .......................... 108
Power switch .................................................149
Power window switches .......................... 132
Rear window and outside rear view mir- ror defoggers switch ............................ 248
Seat heater switches ................................ 255
Seat ventilator switches .......................... 255
Snow mode switch ..........................159, 165 Tilt and telescopic steering control switch
............................................................................ 127
Tire pressure warning reset switch.. 306
Trunk opener main switch........................ 113
Trunk opener switch ..................................... 111
Vehicle-to-vehicle distance switch...204
VSC OFF switch ....................................... 233
Window lock switch.................................. 133
Windshield wiper and washer switch178
Windshield wiper de-icer switch....... 252
T
Tachometer....................................................... 80 Variable red zone......................................... 82
Tail lights............................................................ 173 Light switch .....................................................173
Replacing light bulbs ................................ 324
Theft deterrent system Alarm..................................................................... 71
Engine immobilizer system...................... 69
Theft prevention labels ............................... 72
Tire inflation pressure ..................................313 Maintenance data ...................................... 379
Tire inflation pressure display function......................................................................... 303
Warning light .............................................. 340
Tire information ............................................ 383 Glossary ........................................................ 386
Size ................................................................... 384
Tire identification number..................... 384
Uniform Tire Quality Grading ........... 385
Tire pressure warning system ................ 303 Function ......................................................... 303
Initializing....................................................... 306
Installing tire pres sure warning valves
and transmitters...................................... 305
Registering ID codes .............................. 308
Warning light .............................................. 340
Tires.................................................................... 301 Chains .............................................................239
Checking ........................................................ 301
If you have a flat tire ................................. 350