engine Lexus GS350 2007 Using the front audio system / LEXUS 2007 GS430/350 (OM30A04U) Owner's Guide

98
2-1. Driving procedures
■If the engine does not start
The engine immobilizer system may not have been deactivated. (P.
5 2 )
■When the engine switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
deal

er immediately.
■Auto power OFF function
The engine switch will automatically turn OFF
when left in “ACC” mode for 1 hour
or more.
■Electronic key battery depletion
 P.
9
■When the electronic key battery is discharged
P.
4 0 9
■Conditions affecting operation
P. 7
CAUTION
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not press the accelera-
tor pedal while starting the en gine under any circumstances. 
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
Do not touch the engine switch while driving. 
Pressing and holding the engine switch will stop the engine, which may lead to an
accident.

99
2-1. Driving procedures
2
When driving
NOTICE
■To prevent battery discharge
Do not leave the engine switch in “ACC” or “IG-ON” mode for long periods if the
engine is not running.
■When starting the engine
●Do not race the engine.
●If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.

100
2-1. Driving procedures
Transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the engine switch
is in “IG-ON” mode,
depr
ess the brake pedal
and move the shift lever.

101
2-1. Driving procedures
2
When driving
■Shift position uses
*1: To improve fuel consumption and reduce noises, set the shift lever in the
“D” position for normal driving.
*2: By selecting shift ranges using “S” mode, y
ou can control engine braking
forces.
■ Selecting a driving mode
The following patterns can be selec ted to suit curr
ent driving and
operating conditions.
Power mode
For powerful acceleration and
driving in mountainous regions.
Normal mode
Snow mode
For accelerating and driving on
slippery road surfaces, such as
on snow.
Press “SNOW” to return to nor-
mal mode.
Shift positionFunction
PParking the vehicle or starting the engine
RReversing
NNeutral
DNormal driving*1
S“S” mode driving*2 (  P. 1 0 2 )

102
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” or “4” accor
d-
ing to the vehicle's speed. However, th e initial shif
t range may be set to
“3” or “2” if the AI-SHIFT has opera ted while the shift lever was in the “D”
position. (
P. 1 0 3 )
■ 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.

103
2-1. Driving procedures
2
When driving
■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.)
The maximum speeds can get lower when the engine is not warm such as in cold
climates or before warm-up.
■When driving with the cruise control syst em (or dynamic radar cruise control sys-
tem)
The engine brake will not operate in the “S” mode, e
ven when downshifting to “5” or
“4”. ( P. 1 2 4 , 127 )
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the e
ngine 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 8 4
■If the indicator does not come on even after shifting the shift lever to “S”
This may indicate a malfunction in the automatic transmission system. Have the
v
ehicle inspected by your Lexus dealer immediately. 
(In this situation, the vehicle will operate as if the shift lever is in “D”.)
■AI-SHIFT
The AI-SHIFT automatically shifts the gear to
the optimal position according to the
driver's input and driving conditions. 
The AI-SHIFT automatically operates when th e
shift lever is in the D position. (Shift-
ing the shift lever to the S position cancels the function.)
Downshifting
Maximum speed
mph (km/h)
GS430GS350
5 4120 (194)124 (200)
4 388 (142)87 (141)
3 259 (95)56 (91)
2 124 (38)28 (45)

104
2-1. Driving procedures
Turn signal lever
■Turn signals can be operated when
The engine switch is in “IG-ON” mode.
■If the indicators flash faster than usual
Check that a light bulb in the front or rear
turn signal lights has not burned out.
Left turn
Right turn
Move and hold the lever part-
way to signal a lane change
The left hand signal will flash
until you release the lever.
Move and hold the lever part -
way to signal a lane change
The right hand signal will flash
until you release the lever.

106
2-2. Instrument cluster
Gauges and meters
Tachometer
Displays the number of engine speed in revolutions per minute. (RPM)
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. 113
Odometer
Displays the total distance the vehicle has been driven.
Trip meter
Displays the distance the vehicle has been driven since the meter was last
reset. Trip meters A and B can be used to record and display different dis-
tances independently.

109
2-2. Instrument cluster
2
When driving
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the 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. 4 9 2 )
■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.

112
2-2. Instrument cluster
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as ABS and the SRS airbag warning light not
come on when you start the engine, this could mean that these systems are not
available to help protect you in an accident, which could result in death or serious
injury. Have the vehicle inspected by your Lexus dealer immediately if this occurs.
■ Warning lights
Warning lights inform the driver of malfunctions in the indicated
vehicle’s systems. ( P. 4 4 9 )
*: These lights turn on when the engine switch is turned to “IG-ON” mode
to indicate that a system check is being performed. They will turn off
after the engine is started or afte r a few seconds. There may be a mal -
function in a system if the lights do not come on, or turn off. Have the
vehicle inspected by your Lexus dealer.
(U.S.A.)(Canada)(U.S.A.)(Canada)
(U.S.A.)(Canada)(if equipped)
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