2015 Lexus GX460 cruise control

228
GX460_OM_OM60L72U_(U)4-5. Using the driving support systems
■Radar sensor and grille cover
Always keep the sensor and grille cover clean
to ensure that the vehicle-to-vehicle dis-
tance control operates properly . (Some obstructions, such as snow, ice or plastic objects,
cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is cancel ed if an obstruction is detected.
■Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution while driving. (P. 522)
■Certification
For vehicles sold in the U.S.A., Ha waii, Guam, Saipan and Puerto Rico
For vehicles sold in Canada Grille cover
Radar sensor
1
2

GX460_OM_OM60L72U_(U)
2294-5. Using the driving support systems
4
Driving
CAUTION
■Before using dynamic radar cruise control
Do not overly rely on vehicle-to-vehicle distance control.
Be aware of the set speed. If automatic deceleration/acceleration is not appropriate,
adjust the vehicle speed, as well as the distance between your vehicle and vehicles
ahead by applying the brakes etc.
■Cautions regarding the driving assist systems
Observe the following precautions.
Failure to do so may cause an accident resulting in death or serious injury.
●Assisting the driver to measure following distance
The dynamic radar cruise control is only intended to help the driver in determining
the following distance between the driver’s own vehicle and a designated vehicle
traveling ahead. It is not a mechanism that al lows careless or inattentive driving, and it
is not a system that can assist the driver in low-visibility conditions. It is still necessary
for driver to pay close attention to the vehicle’s surroundings.
●Assisting the driver to judge proper following distance
The dynamic radar cruise control determines whether the following distance
between the driver’s own vehicle and a designated vehicle traveling ahead is appro-
priate or not. It is not capable of making an y other type of judgement. Therefore, it is
absolutely necessary for the driver to remain vigilant and to determine whether or not
there is a possibility of danger in any given situation.
●Assisting the driver to operate the vehicle
The dynamic radar cruise control has no capa bility to prevent or avoid a collision with
a vehicle traveling ahead. Therefore, if there is ever any danger, the driver must take
immediate and direct control of the vehicl e and act appropriately in order to ensure
the safety of all involved.

230
GX460_OM_OM60L72U_(U)4-5. Using the driving support systems
CAUTION
■To avoid inadvertent cruise control activation
Switch the cruise control off using th
e “ON-OFF” button when not in use.
■Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an accident result-
ing in death or serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice or snow
●On steep downhills, or where there are sudden changes between sharp up and down
gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
●At entrances to expressways
●When weather conditions are bad enough that they may prevent the sensors from
functioning correctly (fog, snow , sandstorm, heavy rain, etc.)
●When an approach warning buzzer is heard often
●When your vehicle is towing a trailer (with towing hitch) or during emergency towing
■When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in front of
you.
As the sensor may not be able to correctly detect these types of vehicles, the approach
warning (P. 225) will not be activated, and a fa tal or serious accident may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (trailers with no load on board etc.)
●Motorcycles traveling in the same lane

GX460_OM_OM60L72U_(U)
2314-5. Using the driving support systems
4
Driving
CAUTION
■Conditions under which the vehicle-to-vehicle distance control may not function cor-
rectly
Apply the brakes as necessary in the following conditions as the radar sensor may not
be able to correctly detect vehicles ahead, and a fatal or serious accident may result:
●When water or snow thrown up by the surrounding vehicles hinders the functioning
of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the luggage com-
partment etc.)
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decelerates suddenly
■To ensure the sensor functions correctly
Do not do the following to the sensor or gr ille as doing so may cause the sensor not to
function correctly and could result in an accident:
●Sticking or attaching anything to them
●Leaving them dirty
●Disassembling or subjecting them to strong shocks
●Modifying or painting them
●Replacing them with non-genuine parts
■Handling the radar sensor
Observe the following to ensure the cruise control system can function effectively.
Otherwise, the system may not function correctly and could result in an accident.
●Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or damage
them.
●Do not subject the sensor or surr ounding area to a strong impact.
If the sensor moves even slightly off positi on, the system may malfunction. If the sen-
sor or surrounding area is subject to a stro ng impact, always have the area inspected
and adjusted by your Lexus dealer.
●Do not disassemble the sensor.
●Do not attach accessories or stickers to the sensor, grille cover or surrounding area.
●Do not modify or paint the sensor and grille cover.
●Do not replace them with non-genuine parts.

5227-2. Steps to take in an emergency
GX460_OM_OM60L72U_(U)
(If equipped)
Indicates that the radar sensor is dirty or covered with
iceA buzzer also sounds.
 Clean the sensor.
(If equipped)
Indicates that the radar cruise control system is unable to
judge vehicle-to-vehicle distance
A buzzer also sounds.
 Tu r n o f f s n o w m o d e .
If the windshield wipers are on, turn them off or set
them to a mode other than AUTO or high speed
wiper operation.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system is
suspended
The camera sensor temperature is higher than the
operation temperature range.
A buzzer also sounds.
 Restart the LDA after driving for a while.
(If equipped)
Indicates that the Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
 Clean the sensor and its surrounding area on the
bumper.
Indicates a malfunction in:
• The cruise control system (if equipped); or
• The dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Wa r n i n g m e s s a g eDetails/Actions

5277-2. Steps to take in an emergency
GX460_OM_OM60L72U_(U)
7
When trouble arises
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning messag e may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the vehicle
ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert) lane departure warning function (if equipped)
In the following situations, the warning messag e will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-
tions
●When the lane lines cannot be recognized
■Conditions that the tire pressure warning system may not function properly
 P. 4 7 2
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.

620Alphabetical index
GX460_OM_OM60L72U_(U)
Condenser ................................................461
Console box ...........................................400
Cool box ....................................................413
Cooling system ..................................... 459Engine overheating.......................... 555
Conversation mirror .............................416
Crawl Control ....................................... 340
Cruise control Cruise control....................................... 218
Dynamic radar cruise control........221
Cup holders ............................................ 402
Curtain shield airbags ........................... 34
Current fuel consumption ................... 83
Customizable features ....................... 586
DAC (Downhill Assist Control system)................................................... 343
Daytime running light system ........... 198
Defogger Front windshield ................................ 384
Outside rear view mirrors ............ 385
Rear window ....................................... 385
Differential ............................................... 567
Dimension ............................................... 562
Display Multi-information display .................. 82
Trip information .....................................83
Warning message .............................. 519
Do-it-yourself maintenance ...............451
Doors............................................................ 94 Back door ............................................. 101
Door glasses ......................................... 146
Door lock .................................................. 94
Open door warning light................ 513
Outside rear view mirrors .............. 143
Rear door child-protector................ 97 Driver’s seat position memory........... 131
Driving ........................................................ 154
AVS switch ........................................... 335
Break-in tips .......................................... 155
Correct posture .................................... 26
Procedures .............................................154
Winter drive tips .................................. 371
Dynamic radar cruise control ........... 221
Eco Driving Indicator ............................ 86
EDR (Event data recorder)................... 10
Electronic key ........................................... 90 Battery-saving function ......................113
If the electronic key does not operate properly ............................549
Replacing the battery ......................483
Emergency, in case of If the electronic key does not operate properly ............................549
If the engine will not start ............... 546
If the shift lever cannot be shifted from P ...................................548
If the vehicle has discharged battery ........................ 552
If the warning buzzer sounds .................................................... 511
If the warning light turns on ............. 511
If you have a flat tire .......................... 533
If you lose your keys...........................614
If you think something is wrong.................................................. 509
If your vehicle becomes stuck..................................................... 558
If your vehicle needs to be towed ...................................................504
If your vehicle overheats ................555
D
E

626Alphabetical index
GX460_OM_OM60L72U_(U)
Seat heaters ............................................ 394
Seat ventilators ...................................... 395
Seat position memory............................ 131
Seats....................................................118, 120Adjustment .................................... 118, 120
Adjustment precau tions ......... 119, 130
Child seats/child restraint system installation.............................. 57
Cleaning .................................................. 441
Driving position memory .................. 131
Head restraint ....................................... 136
Properly sitting in the seat ................ 26
Seat position memory......................... 131
Ventilators ............................................ 395
Sensor Automatic headlight system .......... 198
Inside rear view mirror ......................142
Intuitive parking assist-sensor .................................... 238
Rain-sensing windshield wipers .................................................. 209
Service reminder indicators ................74
Shift lever Automatic transmission ................... 190
If the shift lever cannot be shifted from P .................................. 548
Shift lock system.................................... 548
Shopping bag hooks ........................... 407
Side airbags ............................................... 34
Side mirrors ..............................................143 Adjusting and folding........................ 143
Blind Spot Monitor............................. 351
Side turn signal lights ............................194 Replacing light bulbs ....................... 498
Turn signal lever .................................. 194 Smart access system with
push-button start.................................... 111 Antenna location..................................... 111
Starting the engine ............................. 185
Snow tires .................................................373
Spare tire ................................................. 533 Inflation pressure................................ 570
Storage location ................................. 534
Spark plug ............................................... 566
Specifications......................................... 562
Speedometer ............................................. 79
Steering lock Column lock release ........................ 188
Steering wheel ........................................ 139 Adjustment..............................................139
Audio switches
*
Heated steering wheel ................... 393
Steering wheel position memory...................................................131
Stop/tail lights Replacing light bulbs .......................498
Storage feature ..................................... 399
Stuck If the vehicle becomes stuck....... 558
Sun shade Roof ........................................................... 150
Sun visors................................................... 415
Switch “2nd START” button ........................... 191
AVS switch ........................................... 335
BSM (Blind Spot Monitor) switch .....................................................351
Center differential lock/ unlock switch.................................... 337
Crawl Control switch......................340
Cruise control switch ..............218, 221
“DAC” switch ...................................... 343