engine Lexus GS450h 2007 Using the hands-free system (for cellular phone) / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. (OM30727U) User Guide

106
2-1. Driving procedures
Changing shift ranges in “S” mode
Shift the shift lever to the “S” position and operate the shift lever.Upshifting
Downshifting
The initial shift range in “S” mode is automatically set to “5”.
■ Shift r
anges and their functions
●Y
ou can choose from 6 levels of engine braking force.
●A lo
wer shift range will provide gr eater engine braking force than a
higher shift range, and the engine revolutions will also increase.
● If y
ou accelerate while in ranges “1” to “5”, the shift range may auto -
matically range up in accordance with the vehicle's speed.
■Downshifting restrictions in “S” mode
The shift lever cannot be downshifted if the following speeds are exceeded. (The
w
arning buzzer will sound twice in this situation.)
DownshiftingMaximum speed
mph (km/h)
5 4108 (173)
4 378 (125)
3 258 (94)
2 134 (55)

107
2-1. Driving procedures
2
When driving
■When in heavy traffic
To avoid running the hybrid battery (traction battery) down, leave the shift lever in
“D” or “S”.
■When driving with the cruise control system (or dynamic radar cruise control sys-
tem)
The engine brake will not operate in the “S” mode, even when downshifting to “5” or
“4”. ( P. 127, 130)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the power switch is turned to “ACC” or
“IG-ON” mode after driving in snow mode.
■If the shift lever cannot be shifted from “P”
 P. 4 6 7
■If the indicator does not come on even after shifting the shift lever to “S”
This may indicate a malfunction in the transmission. Have the vehicle inspected by
your Lexus dealer immediately. 
(In this situation, the vehicle will operate as if the shift lever is in “D”.)

110
2-2. Instrument cluster
Gauges and meters
The units used on the speedometer may differ depending on the target
region.

The following gauges, meters and display illuminate when the power
switch is in “IG-ON” mode.
Power meter
Displays the instantaneous output from the hybrid system is approximate
kilowatts.
Speedometer
Displays the vehicle speed.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Multi-information display
 P. 117

113
2-2. Instrument cluster
2
When driving
NOTICE
■To prevent damage to the engine and its components
The engine may be overheating if the engine coolant temperature gauge is in the
red zone (“H”). In this case, immediately stop the vehicle in a safe place. Check the
engine after it has cooled completely. (P. 475)
■To activate the light sensitivity function properly
Do not affix a sticker or window tint to the rear window glass, or put an object
behind the rear seat.

155
2-4. Using other driving systems
2
When driving
●In the following situations, the intuitive parking assist may not function correctly,
possibly leading to an accident.
• There is ice, snow or mud on the sensors. (Wiping the sensors will resolve this problem.)
• The sensor area is frozen. (Thawing the area will resolve this problem.) 
In especially cold weather, if a sensor is frozen the screen may show an abnor-
mal display, or obstacles may not be detected.
• The vehicle angle is especially wide.
• In harsh sunlight or intense cold weather.
• When driving on bumpy, sloped or gravel roads, or over grass.
• If there is something producing ultrasonic waves nearby, such as another vehicle’s horn, motorcycle engine nois e, air braking sound from heavy-duty
vehicles, or another vehicle using the intuitive parking assist.
• In heavy rain, or if water is splashed on the sensors.
• If a commercial fender pole or radio antenna is installed.
• If towing eyelet is installed on your vehicle.
• If moving towards a high curb or a curb corner.
• Objects such as signs may cause the detection distance to shorten.
• The area directly under the bumpers is not detected. 
Objects lower than the sensor s or thin stakes etc. may be detected initially,
but as they draw closer, they may cease to be detected.
• If obstacles draw too close to the sensor.
■Obstacles that may not be detected correctly
The following obstacles may not be detected.
• Thin objects such as wire, fencing or rope.
• Objects that absorb sound waves, such as cotton or snow.
• Objects with sharp corners.
• Objects where the upper section projects out over the lower section.
•Low objects.

163
2-4. Using other driving systems
2
When driving
When the VSC/TRAC/hill-start assist control systems are operating
If the vehicle is in danger of slip-
ping, rolling backwards when
star
ting on an incli ne, or if the rear
wheels spin, the slip indicator light
flashes to indicate that the VSC/
TRAC/hill-start assist control sys -
tems have been engaged.
A buzzer (intermittent) sounds to
indicate that VSC is operating.
The stop lights and high mounted
stoplight turn on when the hill-star
t
assist control system is operating.
The slip indicator light flashes as
well when ABS is operating.
■ VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the AB S, VSC, TRAC, hill-start assist con-
trol, VGRS and EPS systems. 
Maintains vehicle stability when swerving on slippery road surfaces by
contr
olling the brakes, engine output, and the movement of the front
wheels.
■ PCS (Pre-Collision System) (if equipped)
 P. 1 6 7

164
2-4. Using other driving systems
To disable TRAC
If the vehicle gets stuck in fresh snow or mud, TRAC may reduce power
from the engine to the wheels. You may need to turn the system off to
enable you to rock the vehicle in order to free it.
Push the button to turn off TRAC.
The slip indicator light should come
on.
Push the button again to turn the
sy
stem back on.
Once you turn the power switch
“
OFF”, TRAC will be activated
automatically.
■Automatic TRAC reactivation
TRAC is reactivated when vehicle speed exceeds 30 mph (50 km/h) even if
“

TRAC OFF” has been turned off.
■Sounds and vibrations caused by the ABS, BA, VSC, TRAC, hill-start assist con-
trol and VGRS systems
●A sound may be heard from the engine compartment when the hybrid system is
started or just after the vehicle begins to move. This sound does not indicate that
a malfunction has occurred in any of these systems.
●Any of the following conditions may occur when the above systems are operat -
ing. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly af
ter the ABS is activated.
■Hill-start assist control is operational when
●The shift lever is in the “D” or “S” position.
●The brake pedal is not depressed.

174
2-5. Driving information
Winter driving tips
Carry out the necessary preparations and inspections before driving the
vehicle in winter. Always drive the vehicle in a manner appropriate to the
prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that ar
e appropriate to the prevailing outside tempera -
tures.
• Engine oil
• Engine/inverter coolant
• Washer fluid
● Ha
ve a service technician inspect th e level and specific gravity of
battery electrolyte.
● Ha
ve the vehicle fitted with four snow tires or purchase a set of
tire chains for the rear tires.
Ensure that all tires are the same si ze and brand, and that chains match
the size of the tires.
● Tire inflation pressure falls in winter as the outside temperature
falls. Add 2.8 to 4.3 psi (20 to 30 kPa, 0.2 to 0.3 kgf/cm2 or bar)
to the standard tire inflation pressure.

255
3-3. Using the audio system
3
Interior features
■Sound
●Dolby Digital
Manufactured under license from Dolby Laboratories. 
“Dolby”, “Pro Logic”, and the double-D symbol are trademarks of Dolby Labo-
ratories. Confidential unpublished works. 
©1992-1997 Dolby Laboratories. All rights reserved. 
This product incorporates copyright protec tion technology that is protected by
method claims of certain U. S. patents and other intellectual property rights
owned by Macrovision Corporation and ot her rights owners. Use of this copy-
right protection technology must be authorized by Macrovision Corporation,
and is intended for home and other limited viewing uses only unless otherwise
authorized by Macrovision Corporation. 
Reverse engineering or disassembly is prohibited.
●DTS 
“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater
System, Inc.
■Unsuitable discs, and player precautions
 P. 2 2 2
CAUTION
■DVD video precaution
Conversational speech on some DVDs is recorded at a low volume to emphasize
the impact of sound effects. If you adjust the volume assuming that the conversa-
tions represent the maximum volume level that the DVD will play, you may be star-
tled by louder sound effects or when you change to a different audio source.
Loud sounds may have a significant impact on the human body or pose a driving
hazard. Keep this in mind when you adjust the volume.

Maintenance and care4
343
4-1. Maintenance and care ......... 344Cleaning and protecting the 
vehicle exterior........................ 344
Cleaning and protecting the 
vehicle interior......................... 346
4-2. Maintenance ........................... 349 Maintenance 
requirements ............................ 349
General maintena nce .............. 351
Emission inspection and 
maintenance (I/M) 
programs ................................... 354 4-3. Do-it-yourself

maintenance......................... 355
Do-it-yourself service 
precautions ............................... 355
Hood .............................................. 358
Positioning the jack .................. 359
Engine compartment ................ 361
Tires ................................................. 375
Tire inflation pressure .............. 385
Wheels .......................................... 389
Air conditioning filter ............... 391
Electronic key battery ............. 393
Checking and replacing 
fuses ............................................. 395
Headlight aim ................................ 411
Light bulbs..................................... 413