transmission Lexus GS350 2008 Do-it-yourself maintenance / LEXUS 2008 GS460/350 OWNER'S MANUAL (OM30A87U)

TABLE OF CONTENTSIndex
2
GS_G_U
May 13, 2008 5:14 pm
1-1. Key information ........................... 20Keys ...................................................... 20
1-2. Opening, closing and locking 
the doors and trunk .................. 22
Smart access system with  push-button start .......................... 22
Wireless remote control .............. 34
Doors.................................................... 37
Trunk..................................................... 42
1-3. Adjustable components 
(seats, mirrors, 
steering wheel) .......................... 45
Front seats .......................................... 45
Driving position memory 
system ............................................... 47
Head restraints.................................. 51
Seat belts ............................................ 53
Steering wheel.................................. 60
Inside rear view mirror ................... 61
Outside rear view mirrors ........... 62
1-4. Opening and closing the 
windows and moon roof .......... 64
Power windows................................ 64
Moon roof .......................................... 67 1-5. Refueling ........................................ 70
Opening the fuel tank cap........... 70
1-6. Theft deterrent system............... 73 Immobilizer system ........................ 73
Alarm.................................................... 75
Theft prevention labels 
(U.S.A.) ............................................. 77
1-7. Safety information ....................... 78 Correct driving posture ............... 78
SRS airbags ...................................... 80
Front passenger occupant 
classification system .................... 92
Child restraint sy stems ................. 98
Installing child restraints ............. 102
2-1. Driving procedures.................... 112 Driving the vehicle .......................... 112
Engine (ignit ion) switch ................ 121
Automatic transmission.............. 125
Turn signal lever............................. 130
Parking brake ................................... 131
2-2. Instrument cluster ..................... 132 Gauges and meters ..................... 132
Indicators and warning 
lights................................................. 136
Multi-information display........... 139
1Before driving
2When driving

When driving2
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GS_G_U
May 13, 2008 5:14 pm
2-1. Driving procedures ........ 112Driving the vehicle................... 112
Engine (ignition) switch .......... 121
Automatic transmission ........ 125
Turn signal lever ....................... 130
Parking brake ............................ 131
2-2. Instrument cluster .......... 132 Gauges and meters ................ 132
Indicators and warning 
lights ......................................... 136
Multi-information display ..... 139 2-3. Operating the lights and

windshield wipers ........ 142
Headlight switch ..................... 142
Fog light switch ........................ 145
Windshield wipers and 
washer ..................................... 146
Headlight cleaner switch ..... 149
2-4. Using other driving 
systems .......................... 150
Cruise control.......................... 150
Dynamic radar cruise 
control ..................................... 153
Intuitive parking assist ........... 164
Rear view monitor 
system....................................... 179
AVS (Adaptive Variable 
Suspension System) ............ 183
Driving assist systems ............ 184
PCS (Pre-Collision 
System) ................................... 190
2-5. Driving information........ 194 Cargo and luggage ................ 194
Vehicle load limits ................... 198
Winter driving tips .................. 199
Trailer towing .......................... 204
Dinghy towing......................... 205

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2-1. Driving procedures
GS_G_U
May 13, 2008 5:14 pm
CAUTION
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the engine running.
This prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accelerator
pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will result in sudden acceleration that may lead to an accident that could result in
death or serious injury.
• When backing up, you may twist your body around, leading to a difficulty in
operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle only slightly, allowing you to depress the brake and accelerator pedals prop-
erly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay response in an emergency, resulting in an acci-
dent.
●Do not drive the vehicle over or stop the vehicle near flammable materials. 
The exhaust system and exhaust gases ca n be extremely hot. This may cause a
fire if there is any flammable material nearby.
●Do not let the vehicle roll backwards while the shift lever is in a driving position, or
roll forward while the shift lever is in “R”. 
Doing so may cause the engine not to oper ate or lead to poor brake and steering
performance, resulting in an accident or damage to the vehicle.
●If the smell of exhaust is noticed inside the vehicle, open the windows and check
that the trunk is closed. 
Large amounts of exhaust in the vehicle can cause driver drowsiness and an acci-
dent, resulting in death or a serious health hazard. Have the vehicle inspected by
your Lexus deal er immediately.
●Do not under any circumstances shift the shift lever to “P”, “R” or “N” while the
vehicle is moving. 
Doing so can cause significant damage to the automatic transmission and may
result in a loss of vehicle control.

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2-1. Driving procedures
GS_G_U
May 13, 2008 5:14 pm
NOTICE
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering wheel
firmly and gradually press the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds.
●The vehicle will behave abnormally.
Replace a flat tire with a new one. ( P. 515)
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, automatic
transmission, transfer (4WD models), differentials, etc.
●Lubricant condition for the propeller shaf t (4WD models), bearings and suspen-
sion joints (where possible) and the function of all joints, bearings, etc.

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2-1. Driving procedures
2
When driving
GS_G_U
May 13, 2008 5:14 pm
Automatic transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the “ENGINE START STOP ” switch is in IGNITION
ON mode, depress the brake pedal and move the shift lever.
■ 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, you can control engine braking
forces.
Shift positionFunction
PParking the vehicle or starting the engine
RReversing
NNeutral
DNormal driving*1
S“S” mode driving*2 (  P. 1 2 7 )

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2-1. Driving procedures
2
When driving
GS_G_U
May 13, 2008 5:14 pm
■If the indicator does not come on even after shifting the shift lever to “S”
This may indicate a malfunction in the automatic 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”.)
■AI-SHIFT
The AI-SHIFT automatically shifts the gear to the optimal position according to the
driver’s input and driving conditions.
GS460: The AI-SHIFT automatically operates when the shift lever is in the “D” or
“S” position.
GS350: The AI-SHIFT automatically operat es when the shift lever is in the “D”
position. (Shifting the shift lever to the “S” position cancels the function.)

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4-2. Maintenance
4
Maintenance and care
GS_G_U
May 13, 2008 5:14 pm
Vehicle interior
ItemsCheck points
Accelerator pedal• Moves smoothly (without uneven pedal effort or catching)?
Automatic transmission
“Park” mechanism• Can the vehicle be hold securely on an incline with the shift lever in “P”?
Brake pedal
• Moves smoothly?
• Does it have appropriate clearance and correct amount of free play?
Brakes
• Pulls to one side when applied?
• Loss of brake effectiveness?
• Spongy feeling brake pedal?
• Pedal almost touches floor?
Head restraints• Move smoothly and lock securely?
Indicators/buzzers• Function properly?
Lights• Do all the lights come on?
• Headlights aimed correctly? ( P. 4 6 7 )
Pa r k i n g b r a ke
• Moves smoothly?
• Can hold the vehicle securely on an
incline?
Seat belts
• Does the seat belt system operate smoothly?
• Are the belts undamaged?
Seats• Do the seat controls operate properly?
Steering wheel
• Moves smoothly?
• Has correct free play?
• No strange noises?

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4-3. Do-it-yourself maintenance
GS_G_U
May 13, 2008 5:14 pm
FuseAmpereCircuit
8MPX-B10
Multiplex communication system,
front controller, door control system
(power door lock system, door cour-
tesy lights, power windows, power
rear view mirror control system, out-
side rear view mirror heaters), power
seat system, steering sensors, elec-
tronically controlled brake system, tilt
and telescopic steering wheel,
gauges and meters, combination
switch
9DOME10
Foot lights, vanity lights, gauges and
meters, steering spot light, steering
switch illumination, rear personal
lights, automatic transmission selec-
tor lever spot light, front personal
lights
10CDS10Noise filter
11ABS MAIN210Electronically controlled 
brake system
12ABS MOTOR30ABS
13ABS MAIN110Capacitor
14BATT-E/G60FR CTRL BATT, ETCS, ALT-S,
A/F HTR and INJ2
15P/ I - B60EFI NO.1, F/PMP and INJ
16ABS150VDIM
17RH J/B-B30AM2, DOOR FR and DOOR RR

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4-3. Do-it-yourself maintenance
GS_G_U
May 13, 2008 5:14 pm
FuseAmpereCircuit
9DOME10
Foot lights, vanity lights, gauges and
meters, steering spot light, steering
switch illumination, rear personal
lights, automatic transmission selec-
tor lever spot light, front personal
lights
10CDS10Noise filter
11ABS MAIN210Electronically controlled 
brake system
12ABS MOTOR30ABS
13ABS MAIN110Capacitor
14BATT-E/G60FR CTRL BATT, ETCS, ALT-S and 
A/F HTR
15ABS150VDIM system
16RH J/B-B30AM2, DOOR FR and DOOR RR
17VGRS40VGRS
18MAIN30H-LP R LWR and H-LP L LWR
19STARTER30Starting system
20LH J/B-B30FL DOOR, RL DOOR and RAD
NO.3
21P/ I - B60EFI NO.1, F/PMP and INJ
22EPS80EPS
23ALT150
RH J/B-AM, LH J/B-AM, E/G-AM,
RR JB, HEATER, DEFOG, FAN1,
FAN2, ABS2, ABS MOTOR, 
ABS MAIN1, and ABS MAIN2

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4-3. Do-it-yourself maintenance
GS_G_U
May 13, 2008 5:14 pm
■Left side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30Power seat system
2A/C7. 5Air conditioning system
3TV7. 5Audio system, air conditioning sys-
tem, rear view monitor system
4TRK OPN10Trunk lid opener
5LH-B10Theft deterrent system
6S/ROOF25Moon roof
7PA N E L7. 5
Steering switch illumination, audio
system, glove box light, automatic
transmission selector lever illumina-
tion, console box light, adaptive vari-
able suspension switch illumination,
cigarette lighter illumination, air con-
ditioning system, VSC OFF switch
illumination, driving pattern selector
switch, seat heater or heated and
ventilated seat switches, register ILL
RH, register ILL LH, fuel filler door
and trunk lid opener switch illumina-
tion, D-SW module