fuel cap 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

Before driving1
19
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 systems ........... 98
Installing child restraints....... 102

70
GS_G_U
May 13, 2008 5:14 pm
1-5. Refueling
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap.
■Before refueling the vehicle
Turn the “ENGINE START STOP” sw itch OFF and ensure that all
the doors and windows are closed.
■ Opening the fuel tank cap
Press the fuel filler door opener
switch.
Turn the fuel tank cap slowly to
open.
Hang the fuel tank cap on the
back of the fuel filler door.
STEP1
STEP2
STEP3

71
1-5. Refueling
1
Before driving
GS_G_U
May 13, 2008 5:14 pm
Closing the fuel tank capAfter refueling, turn the fuel tank
cap clockwise until you hear a
click. The cap will revolve slightly in
the opposite direction once
released.
■Fuel types
Use premium unleaded gasoline. (91 Octane Rating [Research Octane Number
96] or higher)
■Fuel tank capacity
Approximately 18.7 gal. (71 L, 15.6 lmp.gal.)
■When the fuel filler door opener switch is inoperable
The lever can be used to open the fuel filler
door if the fuel filler door cannot be opened
using the inside switch because the 12 volt
battery is discharged or for any other reason.

72
1-5. Refueling
GS_G_U
May 13, 2008 5:14 pm
CAUTION
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so, may
result in death or serious injury.
●Touch the vehicle or some other metal surface to discharge any static electricity.
Sparks resulting from discharging static electricity may cause the fuel vapors to
ignite.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it. 
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until
the sound cannot be heard before fully re moving the cap. In hot weather, pressur-
ized fuel may spray out of the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their bodies to
come close to an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
●Do not smoke while refueling the vehicle. 
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch an y person or object that is statically
charged. 
This may cause static electricity to build up , resulting in a possible ignition hazard.
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
Failure to do so may cause a fire or other incident which may result in death or seri-
ous injury.
NOTICE
■Refueling
Do not spill fuel during refueling. 
Failing to do so may damage the vehicle, such as causing the exhaust systems to
operate abnormally or damaging fuel syst em components or the vehicle’s painted
surface.

194
GS_G_U
May 13, 2008 5:14 pm
2-5. Driving information
Cargo and luggage
Capacity and distributionCargo capacity depends on the to tal weight of the occupants.
(Cargo capacity) = (Total load capa city) — (Total weight of occupants)
Steps for Determining Correct Load Limit—
(1) Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle’s
placard.
(2) Determine the combined weight of the driver and passengers that
will be riding in your vehicle.
(3) Subtract the combined weight of the driver and passengers from
XXX kg or XXX lbs.
Take notice of the following informat ion about storage precautions, cargo
capacity and load.
● Stow cargo and luggage in the trunk whenever possible. Be sure all
items are secured in place.
● Be careful to keep the vehicle leve l. Placing the weight as far for-
ward as possible helps maintain vehicle balance.
● For better fuel economy, do not carry unnecessary weight.

399
4-2. Maintenance
4
Maintenance and care
GS_G_U
May 13, 2008 5:14 pm
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include
OBD (On Board Diagnostics) checks. The OBD system monitors the oper-
ation of the emission control system.
■ If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in
the emission control system. Your vehicle may not pass the I/M test
and may need to be repaired. Contact your Lexus dealer to service
the vehicle.
■ Your vehicle may not pass the I/M test:
●When the 12 volt battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased. 
Also, depending on your driving habits, the readiness codes may
not be completely set.
● When the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
■ When the malfunction indicator la mp goes off after several driv-
ing trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Lexus dealer to prep are the vehicle for re-testing.

433
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U
May 13, 2008 5:14 pm
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent refilling, have it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold. 
If your vehicle has been parked for at least 3 hours and has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.
●Always use a tire pressure gauge. 
The appearance of the tire can be misleadi ng. In addition, tire inflation pressures
that are even just a few pounds off can degrade ride and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal for the
tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight. 
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.

5
When trouble arises
491
5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
*3: Open door warning buzzer:
P. 5 0 2
*
4: Driver’s and front passenger’s seat belt reminder buzzer:
The driver’s and front passenger’s seat belts reminder sounds to alert the driver
and front passenger that his or her seat belt is not fastened. The buzzer sounds
intermittently for 10 seconds after the vehicle has reached a speed of at least 12
mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 20 more seconds.
Warning lightWarning light/DetailsCorrection procedure
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
Take appropriate action in
accordance with the message
displayed on the multi-infor-
mation display.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas? 
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose? 
If it is, tighten it securely.
The light will go off after taking several driving trips. 
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.

540
GS_G_U
May 13, 2008 5:14 pm
6-1. Specifications
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
*: Unladen vehicle
Overall length190.7 in. (4845 mm)
Overall width71.6 in. (1820 mm)
Overall height *2WD56.1 in. (1425 mm)
4WD56.4 in. (1435 mm)
Wheelbase112.2 in. (2850 mm)
Tr e a d
Front60.4 in. (1535 mm)
Rear
2WD
4WD
60.6 in. (1540 mm)
60.4 in. (1535 mm)
Vehicle capacity weight 
(Occupants + luggage)815 lb. (370 kg)