cruise control Lexus GS450h 2007 Using the hands-free system (for cellular phone) / LEXUS 2007 GS450H FROM JULY 2006 PROD. (OM30A05U) User Guide

133
2-4. Using other driving systems
2
When driving
■Driving in the selected cruise control mode
Accelerate or decelerate to the
desired speed and press the
lever down to set.
■ Adjusting the speed setting
Increase speed
Decrease speed
Hold the lever until the desired
speed setting is displayed.
In the constant speed control
mode, fine adjustment of the set
speed (approximately 1.0 mph
[1.6 km/h]) can be made by
lightly pressing the lever up or
down and releasing it.
■Canceling and resuming the speed setting
Cancel
Push the lever towards you to
cancel cruise control.
The setting is also canceled
when the brake pedal is
depressed.
Resume
To resume cruise control and
return to the set speed, push the
lever up.

136
2-4. Using other driving systems
Example of follow-up cruising (when following a vehicle driving slower
than the set speed): When the speed is set at 62 mph (100 km/h) and
the vehicle ahead is driv ing at 50 mph (80 km/h)
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis-
tance set by the driver.
Example of acceleration (when ther e are no longer vehicles driving
slower than the set speed in the lane ahead): When the speed is set at
62 mph (100 km/h) and the vehicle ahead driving at 50 mph (80 km/
h) is out of the lane
When the vehicle ahead of you executes a lane change, the system slowly
accelerates until the set vehicle speed is reached. The system then returns to
fixed speed cruising.
■Dynamic radar cruise control warn ing lights, messages and buzzers
Warning lights, messages and buzzers are us ed to indicate a system malfunction or
to alert you to the need for caution while driving. ( P. 4 4 6 )
■The dynamic radar cruise can be set when
●The shift lever is in “D” or the “4”, “5” or “6” range of “S”.
●Vehicle speed is between approximately 27 mph (43 km/h) and 87 mph (139
km/h).
■Accelerating
The vehicle can be accelerated normally. After acceleration, the set speed
resumes.

138
2-4. Using other driving systems
■Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle
distance control operates properly. (Some obstructions, such as snow, ice or plastic
objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
■Certification
For vehicles sold in the U.S.A.
For vehicles sold in Canada
Grille cover
Radar sensor
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
FCC RF exposure information
This device complies with the FCC RF exposure requirements.
Operation is subject to the following two conditions;
(1) This device may not cause interference, and
(2) This device must accept any interfer ence received, including interference
that may cause undesired operation of the device.

139
2-4. Using other driving systems
2
When driving
CAUTION
■Before using dynamic radar cruise control
Do not overly rely on vehicle-to-vehicle distance control.
Be aware of the set vehicle speed. If au tomatic 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.
■To avoid operating the dynamic radar cruise control by mistake
Keep the “ON-OFF” button off when not in use.
■Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise contro l in any of the following situations.
Doing so may result in inappropriate cont rol of speed and could cause serious or
fatal accident.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as thos e covered with rain, ice or snow
●Where there are sudden changes between sharp up and down gradients
●At entrances to expressways
●When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (f og, snow, sandstorm, etc.)
●Where buzzer can be heard often

412
4-3. Do-it-yourself maintenance
■Driver’s side instrument panel
FuseAmpereCircuit
1FR WIP30Windshield wipers
2RR-IG7. 5RR-IG1
3LH-IG10
Emergency flashers, seat belt preten-
sioners, headlight cleaners, exhaust
system, rear window defogger, elec-
tric cooling fans, front left door con-
trol system, rear left door control
system
4H-LP LVL7. 5Adaptive front lighting system
5A/C W/P7. 5Air conditioning system
6RAD No.310Audio system
7FR DOOR LH20Front left door control system
8RR DOOR LH20Rear left door control system
9FR S/HTR LH15Seat heaters, seat heaters and venti-
lators
10ECU-IG LH10
VGRS, EPS, electronically con-
trolled brake system, yaw rate & G
sensor, dynamic radar cruise control
system, rear view monitor system,
moon roof

446
5-2. Steps to take in an emergency
Wa r n i n g m e s s a g eDetails
(If equipped)
Malfunction in the active stabilizer suspension sys-
tem.

(If equipped)Malfunction in the PCS.
(If equipped)
Intuitive parking assist malfunction. The malfunctioning sensor is shown flashing on the
display. (The illustration shows malfunctioning left
front sensor.)
(Flashing) 
(If equipped)
Malfunction in the radar cruise control system. Stop the vehicle in a safe place. Switch the power
switch to “OFF” and then to “IG-ON” mode again to
reset the cruise control system.

452
5-2. Steps to take in an emergency
Wa r n i n g m e s s a g eDetailsCorrection procedure

Low tire inflation pres-
sure.Check the tire inflation
pressure, and adjust to the
appropriate level.
(Flashing)
(If equipped)The PCS is not currently
functional.
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)
Intuitive parking assist is
dirty or covered with ice.
(The illustration shows
something on the left
front sensor.)
Clean the sensor.
(Flashing) 
(If equipped)
The radar cruise control
sensor is dirty or covered
with ice.
Clean the sensor.

5
When trouble arises
453
5-2. Steps to take in an emergency
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashing)
(If equipped)
The radar cruise control
system is unable to judge
vehicle-to-vehicle dis-
tance.
• Switch the mode select to either the normal or
power mode.
• If the windshield wipers
are on, turn them off or
set them to either the
intermittent or the slow
mode.
(Flashing)
(If equipped)
Yo u r v e h i c l e i s n e a r i n g
the vehicle ahead (in
radar cruise mode).Slow the vehicle by apply-
ing the brakes.
The vehicle is unable to
drive over 60 mph (or
120 km/h) until the trans-
mission warms up.
Wait until the transmission
warms up.
(Flashing)
The hybrid battery (trac-
tion battery) is low.Stop the vehicle and shift
the shift lever to “P”.
(Flashing)
The gasoline engine can-
not operate or the shift
lever is in “N” for a long
time.
Stop the vehicle and shift
the shift lever to “P”.

454
5-2. Steps to take in an emergency
Wa r n i n g m e s s a g eDetailsCorrection procedure
(Flashing)
The transmission is out of
“P” when attempting to
start the hybrid system.Shift the shift lever to “P”
before pressing the power
switch.
■After changing the engine oil (U.S.A. only)
Make sure to reset the oil maintenance data. (P. 3 74 )
■Approach warning message
In the following instances, there is the poss ibility that the approach warning will not
activate even when the 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.

519
Alphabetical index
Installing CRS with lower 
anchorages .......................................... 89
Installing CRS with seatbelts .......... 85
Installing CRS with top straps ........ 90
Child safety Airbag precautions .............................. 72
Child restraint system ........................ 82
Child-protectors....................................26
How your child should wear 
the seatbelt ............................................43
Installing child restraints .................... 85
Moon roof ................................................ 54
Power window lock switch ............. 50
Power window precautions.............. 51
Removed electronic key battery 
precautions ....................................... 402
Seat belt comfort guide....................... 41
Seat belt precautions...........................44
Seat heater precautions .........319, 321
Trunk............................................................32
Cigarette lighter ..................................... 317
Cleaning Exterior ................................................... 352
Interior..................................................... 354
Seat belts ............................................... 355
Clock........................................................... 314
Coin holder ............................................ 309
Compass ................................................. 334
Condenser............................................... 377
Console box........................................... 307
Cooling system Engine overheating ..........................480 Cruise control
Cruise control........................................129
Dynamic radar cruise control........132
Cup holders ............................................. 310
Curtain shield airbags............................ 66
Customizable features ........................ 510
Daytime running light system ........... 123
Defogger Rear window ......................................... 199
Side mirror.............................................. 199
Dimension................................................486
Dinghy towing ......................................... 182
Display Energy flow ................................................. 6
Multi-information display .................. 119
Touch screen ........................................ 184
Trip information ................................... 120
Warning message ............................. 444
Do-it-yourself maintenance .............363
Door courtesy lights ............................304
Door pocket............................................... 311
Doors Door lock .................................................. 25
Rear door child protector ................ 26
Driver's seat belt reminder light .....440
Driving Correct posture..................................... 64
Procedures ..............................................96
DVD player/changer.......................... 232
Electronic key Replacing battery................................ 401
When the electronic key battery 
is discharged..................................... 474
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