
161
2-4. Using other driving systems
2
When driving
ES350_U_(L/O_0708)
■The pre-collision system is operational when
●Seat belt (linked to the radar sensor)
• Vehicle speed is above 3 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or oncomingvehicle exceeds 18 to 24 mph (30 to 40 km/h).
• The front occupants are wearing a seat belt.
●Seat belts (linked to brake operation)
• Vehicle speed exceeds 9 mph (15 km/h).
• The system detects sudden braking or skidding.
• The front occupants are wearing a seat belt.
●Brake Assist
• Vehicle speed is above 18 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle is greater than 18 to 24 mph (30 to 40 km/h).
• The brake pedal is depressed.
■Conditions that may trigger the system even if there is no danger of collision
●When there is an object by the roadside at the entrance to a curve
●When passing an oncoming vehicle on a curve
●When driving over a narrow iron bridge
●When there is a metal object on the road surface
●When driving on an uneven road surface
●When passing an oncoming vehicle on a left-turn
●When your vehicle rapidly closes on the vehicle in front
When the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. ( →P. 362, 373)

362
ES350_U_(L/O_0708)
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:
→P. 3 76
Warning lightWarning light/Details
(USA)
(Canada)
Brake system warning light (warning buzzer)*
Indicates the following;
• Low brake fluid
• Malfunction in the brake booster system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.

364
5-2. Steps to take in an emergency
ES350_U_(L/O_0708)
Follow the correction procedure.After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Warning lightWarning light/Details
(USA)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Pre-collision system warning lightIndicates a malfunction in the pre-collision system.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer
*1)
Indicates that a door or trunk
is not fully closed.Check that all doors and the
trunk are closed.
Rear light failure warning
light
Indicates one or more stop
lights are burned out.
Have the defective bulbs
replaced by your Lexus dealer.
Low fuel level warning lightIndicates remaining fuel level
is low.
(Approximately 2.8 gal.
[10.5 L, 2.3 Imp.gal.] or less)
Refuel the vehicle.

5
When trouble arises
367
5-2. Steps to take in an emergency
ES350_U_(L/O_0708)
■SRS warning light
This warning light system monitors the following:
• The airbag sensor assembly
• The front airbag sensors
• The side and curtain shield airbag sensor assemblies
• The curtain shield airbag sensor assemblies
• The driver’s seat position sensor
• The driver’s seat belt buckle switch
• Occupant detection system (ECU and sensors)
• AIR BAG ON and AIR BAG OFF indicator lights
• Front passenger’s seat belt buckle switch
• The seat belt pretensioner assemblies
• The inflators
• The interconnecting wiring and power sources
■Front passenger detection sensor and passenger seat belt reminder
If luggage or other load is placed on the front passenger seat, depending on its
weight, the reminder light may flash and buzzer may sound.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).

444
ES350_U_(L/O_0708)
Alphabetical index
Alphabetical index
A/C ............................................................. 182
ABS.............................................................. 157
Adaptive front lighting system ......... 133
AFS .............................................................. 133
Air conditioning filter ......................... 330
Air conditioning systemAir conditioning filter .......................330
Automatic air conditioning system ....................................................182
Airbags
Airbag operating conditions........... 79
Airbag precautions for your child.......................................................... 83
Airbag warning light ........................ 363
Curtain shield airbag operating conditions..............................................80
Curtain shield airbag precautions .......................................... 83
Front passenger occupant classification system.........................88
General airbag precautions ........... 83
Locations of airbags............................. 77
Modification and disposal of airbags .................................................... 87
Proper driving posture ............. 75, 83
Side airbag operating conditions..............................................80
Side airbag precautions .................... 83
SRS airbags .............................................. 77
Alarm ............................................................ 72
Antenna ..................................................... 196
Anti-lock brake system ....................... 157
Armrest ..................................................... 265
Ashtray ......................................................260
Audio input ............................................... 216 Audio system
Antenna.................................................... 196
Audio input............................................. 216
AUX adapter ........................................ 216
CD player/changer ........................... 199
MP3/WMA disc............................... 205
Optimal use ........................................... 213
Portable music player ....................... 216
Radio ......................................................... 192
Steering wheel audio switch...........217
Automatic air conditioning system ..................................................... 182
Automatic headlight leveling system ......................................................134
Automatic light control system.........132
Automatic transmission Automatic transmission ..................... 117
If the shift lever cannot be shifted from P................................... 396
S mode .......................................................118
AUX adapter ...........................................216
Auxiliary box .......................................... 256
Back-up lights Wattage ................................................... 417
Battery
Checking................................................. 312
If the vehicle has discharged battery .................................................400
Preparing and checking
before winter...................................... 167
Bluetooth
®................................................219
Brake Fluid.......................................................... 309
Parking brake.......................................... 121
A
B

446
Alphabetical index
ES350_U_(L/O_0708)
DisplayDynamic radar crui se control ....... 142
Trip information .................................... 129
Warning message............................. 373
Do-it-yourself maintenance ............. 294
Door courtesy lights Door courtesy lights..........................247
Wattage.................................................... 417
Doors Door glasses ........................................... 60
Door lock................................. 22, 34, 37
Side mirrors ............................................. 58
Driver's seat belt reminder light ..... 364
Driving Break-in tips ...........................................107
Correct posture .................................... 75
Procedures ............................................ 106
Winter driving tips............................... 167
Driving position memory ...................... 44
Electronic key If the electronic key does not
operate properly ............................398
Emergency, in case of
If the electronic key does not operate properly ............................398
If the engine will not start ............... 394
If the shift lever cannot be shifted from P ...................................396
If the vehicle has discharged
battery ................................................. 400
If the warning buzzer sounds ...... 362
If the warning light turns on .......... 362 If the warning message is
displayed .............................................373
If you have a flat tire ........................ 384
If you lose your keys .........................397
If you think something is wrong .................................................. 358
If your vehicle becomes stuck .... 405
If your vehicle needs to be towed ................................................... 352
If your vehicle overheats................ 403
Engine Compartment ....................................... 301
Engine switch .......................................... 114
Hood ....................................................... 298
How to start the engine ..................... 114
Identification number ...................... 409
If the engine will not start ............... 394
Ignition switch ......................................... 114
Overheating ........................................ 403
Engine compartment cover ............. 302
Engine coolant Capacity .................................................. 412
Checking............................................... 307
Preparing and checking
before winter...................................... 167
Engine coolant temperature
gauge ....................................................... 122
Engine immobilizer system ................. 70
Engine oil Capacity .................................................... 411
Checking............................................... 303
Preparing and checking
before winter...................................... 167
Engine oil maintenance data ........... 306
Event data recorder ............................ 360
E

451
Alphabetical index
ES350_U_(L/O_0708)
Tire informationGlossary ................................................ 426
Size ........................................................... 423
Tire identification number ............. 423
Uniform tire quality grading..........424
Tires
Chains ....................................................... 169
Checking ................................................. 316
If you have a flat tire.......................... 384
Inflation pressure ............................... 324
Inflation pressure sensor.................. 317
Information.............................................. 421
Replacing............................................... 384
Rotating tires .......................................... 316
Size ............................................................. 415
Snow tires.................................................. 171
Spare tire ............................................... 384
Tools .......................................................... 384
Total load capacity................................. 166
Towing
Dinghy towing...................................... 180
Emergency towing ........................... 352
Trailer towing......................................... 173
TRAC .......................................................... 157
Traction control ...................................... 157
Trip meter.................................................. 122
Trunk Extending a space ............................ 268
Opener........................................................ 41
Trunk light
Trunk light ................................................. 42
Wattage ................................................... 417 Turn signal lights
Replacing light bulbs ........................343
Switch........................................................ 120
Wattage ....................................................417
Vanity lights Vanity lights ......................................... 258
Wattage ....................................................417
Vanity mirrors ........................................258
Vehicle identification number .........409
Vehicle stability control....................... 157
Ventilators ............................................... 263
VSC............................................................. 157
Warning buzzers Brake system........................................362
Downshifting ........................................... 119
Open door ...........................................364
Seat belt reminder .............................364
Warning lights
Anti-lock brake system ...................363
Brake assist system ...........................363
Brake system........................................362
Charging system................................363
Low fuel level .......................................364
Low tire pressure warning light ........................................................364
Malfunction indicator lamp ...........363
Master warning light.........................364
Open door ............................................364
Pre-collision system..........................363
Pretensioners .......................................363
Rear light failure warning light .....364
Seat belt reminder light...................364
SRS airbags...........................................363
V
W
*: Refer to the “Navigation System Owner’s Manual”.

455
What to do if...
ES350_U_(L/O_0708)
■Warning lights
The warning light or indicator
light comes onP. 3 6 2If a warning light turns on or a warning
buzzer sounds...
or or
P. 3 6 2P. 3 6 3
P. 3 6 4
or
P. 3 6 3
or
P. 3 6 4P. 3 6 4
P. 3 6 3P. 3 6 4
P. 3 6 4P. 3 6 3
P. 3 6 4P. 3 6 4
P. 3 6 3
Brake system warning lightMalfunction indicator lamp
“ABS” warning lightDriver’s seat belt reminder
light
Front passenger’s seat belt
reminder light
Low fuel level warning light
SRS warning lightMaster warning light
Open door warning lightPre-collision system warn-
ing light
Rear light failure warning
lightTire pressure warning light
Charging system warning
light