
760What to do if... (Troubleshooting)
ES350_300h_OM_OM33B36U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys
can be made by your Lexus dealer. (→P. 125)
●If you lose your electronic keys, the risk of vehicle theft
increases significantly. Contact your Lexus dealer immediately.
(→ P. 1 2 6 )
●Is the electronic key battery weak or depleted? ( →P. 584)
●Is the “START STOP ENGINE” <“POWER”> switch in
IGNITION ON
When locking the doors, turn the “START STOP ENGINE”
<“POWER”> switch off. ( →P. 206, 213)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the elec-
tronic key on your person.
●The function may not operate properly due to the condition of
the radio wave. ( →P. 1 3 4 )
If you have a problem, check the following before contacting your
Lexus dealer.
The doors cannot be locked, unlocked, opened or closed
Yo u l o s e y o u r k e y s
The doors cannot be locked or unlocked

762What to do if... (Troubleshooting)
ES350_300h_OM_OM33B36U_(U)●
Did you press the “START STOP ENGINE” <“POWER”>
switch while firmly depressing the brake pedal? (
→P. 205, 212)
●Is the shift lever in P? ( →P. 208, 215)
●Is the electronic key anywhere detectable inside the vehicle?
(→ P. 1 3 0 )
●Is the steering wheel unlocked? ( →P. 2 0 9 , 2 1 6 )
●Is the electronic key battery weak or depleted?
In this case, the engine
porary way. ( →P. 6 7 8 )
●Is the 12-volt battery discharged? ( →P. 6 8 0 , 6 8 4 )
●Is the “START STOP ENGINE” <“POWER”> switch in
IGNITION ON
If you cannot release the shift lever by depressing the brake
pedal with the “START STOP ENGINE” <“POWER”> switch in
IGNITION ON
If you think something is wrong
The engine
The shift lever cannot be shifted from P even if you depress the
brake pedal

767Alphabetical index
ES350_300h_OM_OM33B36U_(U)
Armrest door ......................................... 498
Assist grip ................................................500
Audio input.............................................. 359
Audio system
*.......................................350
Audio input........................................... 359
AUX port .............................................. 359
Bluetooth
® audio ................................417
CD player ..............................................387
iPod .......................................................... 395
MP3/WMA disc ...............................387
Optimal use ..........................................370
Portable music player ..................... 404
Radio ........................................................378
Setup menu ............................................ 361
Steering wheel audio switches ...............................................357
USB memory ...................................... 399
Automatic air conditioning
system .................................................... 464
Automatic headlight leveling
system .................................................... 236
Automatic High Beam ....................... 237
Automatic light control system .................................................... 233
Automatic transmission ..................... 222 If the shift lever
cannot be shifted from P ............676
AUX port
*.............................................. 359
Auxiliary box .......................................... 487 Back-up lights
Replacing light bulbs ...................... 609
Wattage ................................................... 714
Battery (12-volt battery) ......... 557, 562 If the 12-volt battery
is discharged .......................680, 684
Preparing and checking before
winter...................................................... 341
Warning light ....................................... 627
Battery (traction battery) ...................... 77
Bluetooth
®*
Audio system .......................................405
Hands-free system (for cellular phone) .........................419
Brake
Fluid ..........................................................556
Parking brake ........................................ 231
Warning light ...........................626, 628
Brake assist ............................................... 313
Break-in tips .............................................190
Brightness control
Instrument panel light control ........ 99
BSM (Blind Spot Monitor) ............... 328
B
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

768Alphabetical index
ES350_300h_OM_OM33B36U_(U)
CareAluminum wheels ..............................523
Exterior.................................................... 522
Interior .....................................................526
Seat belts ................................................ 527
Cargo capacity...................................... 202
Cargo hooks ..........................................488
CD player
*............................................. 387
Chains ....................................................... 343
Child restraint system Booster seats, definition ................... 58
Booster seats, installation..................68
Convertible seats, definition ........... 58
Convertible seats, installation .........65
Front passenger occupant
classification system ........................ 50
Infant seats, definition ......................... 58
Infant seats, installation .......................65
Installing CRS
with LATCH anchors ..................... 63
Installing CRS with seat belts ..........65
Installing CRS with top tether strap .........................69 Child safety ................................................. 57
12-volt battery
precautions .......................... 559, 683
Airbag precautions................................ 41
Child restraint system......................... 58
How your child should wear
the seat belt .......................................... 34
Installing child restraints .................... 62
Moon roof precautions ................... 185
Power window lock switch............. 177
Power window precautions .......... 180
Rear door child-protectors ............145
Removed electronic key battery precautions ............. 585
Seat belt extender precautions ...........................................37
Seat belt precautions ............................ 61
Seat heater precautions ..................477
Trunk precautions ............................... 152
Child-protectors .................................... 145
Cleaning Aluminum wheels .............................. 523
Exterior ................................................... 522
Interior ..................................................... 526
Seat belts................................................ 527
Clock........................................................... 491
Coat hooks ............................................. 499
Condenser.............................................. 555
Console box........................................... 485
Console box light ................................. 485
Consumption screen ............................. 118
Cooling system
Engine overheating ......................... 688
Hybrid system overheating ............691
Cruise control Cruise control ..................................... 254
Dynamic radar cruise control .....258
C

769Alphabetical index
ES350_300h_OM_OM33B36U_(U)
Cup holders ............................................ 486
Curtain shield airbags ........................... 39
Customizable features ....................... 730
Daytime running light system .......... 235
DefoggerFront windshield .................................470
Outside rear view mirrors .............470
Rear window ........................................470
Dimension ............................................... 700
Dinghy towing........................................ 204
Display Dynamic radar cruise control..... 258
LDA (Lane Departure Alert) ....... 275
Multi-information display ................ 102
Trip information ................................... 103
Warning message ............................ 636
Display Audio system .........................350 Display settings ................................... 367
Setup menu ............................................ 361
Do-it-yourself maintenance ............. 537
Door courtesy lights Location ..................................................479
Wattage ....................................................714
Doors
Automatic door locking and unlocking system.................... 146
Door glasses ..........................................177
Door lock ................................................ 144
Open door warning buzzer............ 131
Open door warning light...............629
Outside rear view mirrors ...............174
Rear door child-protector.............. 145 Driver’s seat position memory..........159
Driving position memory................ 160
Memory recall function .................... 162
Power easy access system .............159
Driving Break-in tips .......................................... 190
Correct driving posture .................... 30
Driving mode select switch ..............311
Hybrid vehicle driving tips ............338
Procedures ............................................ 188
Winter drive tips .................................. 341
Dynamic radar cruise control
Function ..................................................258
Warning message................ 638, 645
Eco drive mode........................................ 311
Eco Driving Indicator ...........................109
EDR (Event data recorder).....................11
Electric motor (traction motor).......... 73
Electric Power Steering (EPS) Function .................................................... 314
Warning light ....................................... 628
Warning message............................. 639
Electronic key .......................................... 124 Battery-saving function .................... 133
If the electronic key does not operate properly ............................ 677
Replacing the battery ......................584
D
E
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

770Alphabetical index
ES350_300h_OM_OM33B36U_(U)
Emergency, in case ofIf a warning buzzer
sounds..................................................626
If a warning light turns on...............626
If a warning message is displayed ....................................... 636
If the 12-volt battery is discharged ........................... 680, 684
If the electronic key does not operate properly ........ 677
If the engine will not start................ 672
If the hybrid system will not start ................................................674
If the shift lever
cannot be shifted from P ............676
If you have a flat tire ......................... 659
If you think something is wrong...............................................624
If your vehicle becomes stuck ......................................................697
If your vehicle has to be stopped in an emergency ........... 615
If your vehicle needs to be towed .........................................617
If your vehicle overheats .... 688, 691
Emergency flashers ...............................614
Energy monitor ........................................ 114 Engine
Accessory mode ...............................206
Compartment .....................................545
Engine switch ............................205, 212
Hood..........................................................541
How to start the engine..................205
How to start the hybrid system .................................................... 212
Identification number ....................... 702
If the engine will not start ............... 672
Ignition switch (“POWER” switch).................................................... 212
Ignition switch (“START STOP ENGINE” switch) .........................205
Overheating..............................688, 691
“POWER” switch. ............................... 212
“START STOP ENGINE” switch ...................................................205
Engine compartment cover..............547
Engine coolant Capacity ................................................. 707
Checking ...............................................553
Preparing and checking before winter ...................................... 341
Engine coolant temperature gauge ......................................................... 97
Engine immobilizer system ................. 84
Engine oil Capacity ................................................. 705
Checking ...............................................548
Oil level warning message ........... 644
Oil pressure warning message........................... 637
Preparing and checking
before winter ...................................... 341

772Alphabetical index
ES350_300h_OM_OM33B36U_(U)
Hands-free system (for cellular phone)
*..........................419
Head restraints ........................................165
Headlights Discharge headlights
precautions........................................... 611
Light switch ........................................... 233
Replacing light bulbs............................... 600, 601, 610
Wattage ....................................................714
Heaters
Air conditioning system ..................................................464
Heated steering wheel ....................478
Seat heaters ..........................................478
Outside rear view mirrors .............470
High-voltage components ................... 77
Hill-start assist control ..........................319
Hood ............................................................541
Warning message .............................. 641
Hooks
Cargo hooks ....................................... 488
Coat hooks .......................................... 499
Grocery bag hooks......................... 488
Retaining hooks (floor mat) .............28
Horn ........................................................... 232
Hybrid battery (traction battery) ................................... 77
Hybrid battery
(traction battery) air vents ................ 78 Hybrid system............................................ 73
Emergency shut off system ............. 78
Energy monitor/consumption screen ...................................................... 112
EV drive mode ..................................... 219
High voltage components ................ 77
Hybrid System Indicator ................. 100
Hybrid system precautions .............. 77
Hybrid vehicle driving tips ............338
If the hybrid system will not start ............................................... 674
Overheating...........................................691
“Power” (ignition) switch ................. 212
Starting the hybrid system............... 212
Vehicle proximity notification system ......................................................74
Hybrid System Indicator .................... 100
Hybrid transmission .............................226 If the shift lever cannot be shifted from P ................................... 676
H

773Alphabetical index
ES350_300h_OM_OM33B36U_(U)
I/M test ..................................................... 536
IdentificationEngine...................................................... 702
Vehicle ..................................................... 701
Ignition switch (“POWER”
switch) ...................................................... 212
Ignition switch (“START STOP
ENGINE” switch) ............................. 205
Illuminated entry system ..................... 481
Immobilizer system.........................84, 86
Indicators .................................................... 95
Initialization Maintenance........................................ 530
Tire pressure warning system................................567
Initiators (tire pressure warning system)................................. 575
Inside rear view mirror .......................... 171
Instrument panel light control ............ 99
Interior light............................................. 479
Intuitive parking assist Function ................................................... 281
Warning message ................638, 645 Jack
Positioning a floor jack.................... 542
Vehicle-equipped jack .................. 660
Jack handle ................................................ 660
Jam protection function
Moon roof .............................................. 183
Power trunk opener and closer ............................................. 151
Power windows....................................178
Keyless entry Smart access system
with push-button start.................... 127
Wireless remote control....................141
Keys Battery-saving function .................... 133
Electronic key ........................................ 124
Engine switch ............................205, 212
If the electronic key does not operate properly........ 677
Key number plate ................................ 124
Keyless entry ..................................127, 141
Mechanical key..................................... 124
“POWER” switch ................................ 212
Replacing the battery ......................584
“START STOP ENGINE” switch ...................................................205
Warning buzzer .....................................131
Wireless remote control key ...........141
Knee airbags ............................................. 38
IJ
K
*: For vehicles with a navigation system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.