2009 Lexus ES350 sensor

167
2-4. Using other driving systems
2
When driving
ES350_U_(L/O_0808)
CAUTION
■Handling the radar sensor
Observe the following to ensure the pre-collision system can function effectively.
●Keep the sensor and front grille clean at all times.
Clean the sensor and front grille with a soft cloth so you do not mark or damage
them.
●Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction. If the
sensor or surrounding area are subject to a strong impact, always have the area
inspected and adjusted by a Lexus dealer.
●Do not disassemble the sensor.
●Do not attach accessories or stickers to the sensor, grille guard or surrounding
area.
■Limitations of the pre-collision system
Do not rely on the pre-collision system. Always drive safely, taking care to observe
your surroundings and checking for any obstacles or other road hazards.

289
3-6. Other interior features
3
Interior features
ES350_U_(L/O_0808)
■Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●The vehicle is stopped immediately after turning.
●The vehicle is on an inclined surface.
●The vehicle is in a place where the earth's magnetic field is subject to interfer-
ence by artificial magnetic fields (underground car park/parking lot, under a
steel tower, between buildings, roof car park/parking lot, near an intersection,
near a large vehicle, etc.).
●The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mirror.)
●The battery has been disconnected.
●A door is open.
CAUTION
■While driving the vehicle
Do not adjust the display. Be sure to adjust the display only when the vehicle is
stopped.
■When doing the circling calibration
Be sure to secure a wide space, and watch out for people and vehicles in the neigh-
borhood. Do not violate any local traffic rules while performing circling calibration.
NOTICE
■To avoid compass malfunctions
Do not place magnets or any metal objects near the inside rear view mirror.
Doing this may cause a malfunction of the compass sensor.
■To ensure normal operation of the compass
●Do not perform circling calibration of the compass in a place where the earth's
magnetic field is subject to interference by artificial magnetic fields.
●During calibration, do not operate electric systems (moon roof, power windows,
etc.) as they may interfere with the calibration.

5
When trouble arises
373
5-1. Essential information
ES350_U_(L/O_0808)
Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a near
car crash event, this device may record some or all of the following infor-
mation:
● Engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver's seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger's occupant classification
The information above is intended to be used for the purpose of improv-
ing vehicle safety performance. Unlike general data recorders, the EDR
does not record sound data such as conversation between passengers.
Your vehicle has computers that monitor and control certain aspects of
your vehicle. These computers assist in driving and maintaining optimal
vehicle performance.
Besides storing data useful for troubleshooting, there is a system to
that record data in a crash or a near car crash event.

380
5-2. Steps to take in an emergency
ES350_U_(L/O_0808)
■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).

388
5-2. Steps to take in an emergency
ES350_U_(L/O_0808)
Warning messageDetails
(If equipped)
Indicates intuitive parking assist malfunction.A buzzer also sounds.
The malfunctioning assist-sensor is shown flashing on
the display.
(Flashing)
(Flashing)
(If equipped)
Indicates a malfunction in the radar cruise control
system. A buzzer also sounds.
Stop the vehicle in a safe place. Switch the “ENGINE
START STOP” switch to OFF and then to IGNITION
ON mode again to reset the cruise control system.
Indicates a malfunction in the TRAC and VSC sys-
tems.

392
5-2. Steps to take in an emergency
ES350_U_(L/O_0808)
Warning messageDetailsCorrection procedure
(Flashing)
(If equipped)
Indicates that the pre-
collision system is not
currently functional. A buzzer also sounds.
Clean the grille and the
sensor.This message appears
when the pre-collision
system is hot. In this case,
wait until the system
cools down.
(If equipped)
Indicates that the sensor
of intuitive parking assist
is dirty or covered with
ice.A buzzer also sounds.
Clean the sensor.
(Flashing)
(Flashing)
(If equipped)
Indicates that the radar
cruise control sensor is
dirty or covered with ice. A buzzer also sounds.
Clean the sensor.

450
6-2. Customization
ES350_U_(L/O_0808)
Moon roof
(standard
type)
(
→P. 63)
Linked mechanical key
operationON
(Open and close)OFF
Open only
Close only
Linked operation of com-
ponents when mechanical
key is used
Slide onlyTilt only
Wireless remote control
linked operationON
(Open only)OFF
Linked operation of com-
ponents when wireless
remote control used
Slide onlyTilt only
Linked entry functionONOFF
Automatic
light control
system
(
→P. 1 3 5 )
Light sensor sensitivityLevel 3Level 1 to 5
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds
Lights
(
→P. 1 3 5 )
Daytime running light sys-
tem (USA only)ONOFF
Intuitive park-
ing assist
(
→P. 1 5 5 )
Back sensor operation
display and buzzerONOFF
Buzzer volumeLevel 3Level 1 to 5
Distance which a sensor
detects4.5 ft. (150 cm)1.8 ft. (60 cm)
ItemFunctionDefault settingCustomized setting

462
Alphabetical index
ES350_U_(L/O_0808)
Cooling systemEngine overheating ............................416
Cornering assist sensors .................... 155
Cruise control Cruise control ....................................... 143
Dynamic radar crui se control .......146
Cup holders ............................................260
Curtain shield airbags............................ 77
Customizable features ....................... 447
Daytime running light system ........... 136
Defogger Rear window......................................... 195
Side mirror ............................................. 195
Dimension ................................................ 422
Dinghy towing ......................................... 185
Display Dynamic radar crui se control .......146
Trip information .................................... 132
Warning message.............................386
Do-it-yourself maintenance .............304
Door courtesy lights Door courtesy lights......................... 253
Wattage.................................................... 431
Doors Door glasses ........................................... 60
Door lock................................. 22, 34, 37
Side mirrors ............................................. 58
Driver's seat belt reminder light ..... 377
Driving Break-in tips .......................................... 109
Correct posture .................................... 75
Procedures ............................................ 108
Winter driving tips............................... 172
Driving position memory ...................... 44 Electronic key
If the electronic key does not
operate properly................................ 411
Emergency, in case of
If the electronic key does not operate properly................................ 411
If the engine will not start ............... 407
If the shift lever cannot be shifted from P................................... 409
If the vehicle has discharged
battery ................................................... 413
If the warning buzzer sounds.......375
If the warning light turns on...........375
If the warning message is
displayed ............................................ 386
If you have a flat tire .........................397
If you lose your keys .......................... 410
If you think something is
wrong .................................................... 371
If your vehicle becomes stuck ...... 419
If your vehicle needs to be towed ................................................... 365
If your vehicle overheats.................. 416
Emergency flashers
Switch...................................................... 364
Engine
Compartment ......................................... 311
Engine switch .......................................... 116
Hood .......................................................308
How to start the engine ..................... 116
Identification number .......................423
If the engine will not start ............... 407
Ignition switch .........................................116
Overheating .......................................... 416
Engine compartment cover ...............312
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