tires Lexus GS350 2011 Owner's Manual

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GS_G_U (OM30C11U)
May 21, 2010 12:06 pm
4-1. Maintenance and careCleaning and protecting the vehicle exterior.................. 430
Cleaning and protecting the vehicle interior .................... 433
4-2. Maintenance Maintenance requirements............................... 436
General maintenance ............... 438
Emission inspection and maintenance (I/M)
programs ....................................... 441 4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................................. 442
Hood ................................................. 445
Positioning a floor jack............... 446
Engine compartment.................. 448
Tires ................................................... 463
Tire inflation pressure................. 473
Wheels ............................................. 477
Air conditioning filter.................. 479
Electronic key battery ................ 482
Checking and replacing fuses ................................................ 484
Headlight aim ............................... 509
Light bulbs ........................................ 512
5-1. Essential information Emergency flashers ................... 520
If your vehicle needs to be towed ................................... 521
If you think something is wrong ............................................ 530
Fuel pump shut off system ......... 531
Event data recorder.................... 532
4Maintenance and care
5When trouble arises

TABLE OF CONTENTSIndex
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GS_G_U (OM30C11U)
May 21, 2010 12:06 pm
5-2. Steps to take in an emergencyIf a warning light turns on or a warning buzzer
sounds... ......................................... 534
If a warning message is displayed ....................................... 544
If you have a flat tire (Vehicles with standard
tires) ................................................ 557
If you have a flat tire (Vehicles with run-flat
tires) ................................................ 567
If the engine will not start ......... 568
If the shift lever cannot be shifted from “P”.......................... 569
If you lose your keys .................... 570
If the electronic key does not operate properly ........................ 571
If the 12 volt battery is discharged ................................... 574
If your vehicle overheats ........... 578
If the vehicle becomes stuck................................................. 581
If your vehicle has to be stopped in an
emergency .................................. 582 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 584
Fuel information ........................... 599
Tire information............................. 602
6-2. Customization Customizable features................ 616
6-3. Initialization Items to initialize ........................... 622
Reporting safety defects for U.S. owners........................... 624
Seat belt instructions for Canadian owners
(in French) .................................... 625
SRS airbag instructions for Canadian owners
(in French) .................................... 627
6Vehicle specifications
7For owners

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2-1. Driving procedures
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, because the road surface will be especially
slippery.
●Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between the tires and the road surface, preventing
the steering and brakes from operating properly.
■Breaking in your new Lexus
To extend the life of the vehicle, the following precautions are recommended to
observe:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the low range in the “S” position.
• Do not drive at a constant speed for extended periods.
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system.
This type of brake system needs bedding-down of the brake shoes periodically or
whenever the parking brake shoes and/or drums are replaced.
Have your Lexus dealer perform the bedding-down.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the
correct fuel. (→P. 5 8 7 )
■When starting on an incline
The hill-start assist control may operate. ( →P. 199)
■Overheating
Your vehicle may overheat under the following extreme driving conditions:
●When driving on a long uphill road in hot weather
●Suddenly decelerating or stopping the vehicle immediately after high-speed
driving

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2-1. Driving procedures
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
CAUTION
■When driving the vehicle
●Do not shift the shift lever to “D” while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle control.
●Moving the shift lever to “N” while the vehicle is moving will disengage the engine
from the transmission. Engine braking is not available when “N” is selected.
●During normal driving, do not turn off the engine. Turning the engine off while
driving will not cause loss of steering or braking control, but the power assist to
these systems will be lost. This will make it more difficult to steer and brake, so you
should pull over and stop the vehicle as soon as it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible to stop
the vehicle in the normal way: → P. 5 8 2
●Use engine braking (downshift) to maintain a safe speed when driving down a
steep hill.
Using the brakes continuously may cause the brakes to overheat and lose effec-
tiveness. (→P. 1 3 9 )
●When stopped on an inclined surface, use the brake pedal and parking brake to
prevent the vehicle from rolling backward or forward and causing an accident.
●Be careful when driving on slippery surfaces, as the vehicle may spin or skid when
downshifting, rapidly accelerating, braking or turning.
●Do not adjust the position of the steering wheel, the seat, or the inside or outside
rear view mirrors while driving.
Doing so may result in a loss of vehicle control that can cause accidents that may
result in death or serious injury.
●Always check that all passengers’ arms, heads or other parts of their bodies are
not outside the vehicle, as this may result in death or serious injury.
●Do not drive in excess of the speed limit. Even if the legal speed limit permits it, do
not drive over 85 mph (140 km/h) unless your vehicle has high-speed capability
tires. Driving over 85 mph (140 km/h) may result in tire failure, loss of control and
possible injury. Be sure to consult a tire dealer to determine whether the tires on
your vehicle are high-speed capability tires or not before driving at such speeds.

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2-1. Driving procedures
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
CAUTION
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, you may accidentally move the shift lever or
depress the accelerator pedal, which could cause an accident or fire due to engine
overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust
gases may collect and enter the vehicle, leading to death or a serious health hazard.
■When braking the vehicle
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and may cause one side of
the vehicle to brake differently than the other side. Also the parking brake may
not securely hold the vehicle.
●If the brake actuator (GS460) or brake booster (GS350) does not operate, do
not follow other vehicles closely and avoid hills or sharp turns that require brak-
ing.
In this case, braking is still possible, but it will require more force on the pedal than
usual. Braking distance may also increase.
●Do not pump the brake pedal if turning the engine off.
Each push on the brake pedal uses up the reserve for the power-assisted brakes.
●The brake system consists of 3 (GS460) or 2 (GS350) individual hydraulic sys-
tems: If one of the systems fails, the other will still operate. In this case, the brake
pedal should be depressed more firmly than usual and braking distance becomes
longer.
Do not drive your vehicle with only a single brake system. Have your brakes fixed
immediately.
■If the vehicle becomes stuck or bogged (4WD models)
Do not spin the wheels recklessly when any of the tires is up in the air, or stuck in
sand or mud, etc. This may damage the drive system components or propel the
vehicle forward (or in another direction) and cause an accident.

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2-4. Using other driving systems
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
NOTICE
■When using the intuitive parking assist
In the following situations, the system may not function correctly due to a sensor
malfunction etc. Have the vehicle checked by your Lexus dealer.
●A beep does not sound when you turn the main switch on.
●The intuitive parking assist operation display flashes, and a beep sound when no
obstacle has been detected.
●If the area around a sensor collides with something, or is subjected to strong
impact.
●If the bumper collides with something.
●If the display shows continuously without a beep.
■When changing tires
If you install tires of a size other than that recommended by the manufacturer, the
system will be unable to correctly detect steering wheel movement. Always use tire
sizes recommended by the manufacturer.
■When washing the vehicle
When washing the vehicle using high pressure cleaning equipment, do not spray
water directly on the sensors. Subjecting the sensors to high pressure impact may
cause a malfunction.

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2-4. Using other driving systems
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
CAUTION
■If the hill-start assist control does not operate effectively
Do not overly rely on the hill-start assist control. The hill-start assist control may not
operate effectively on steep inclines and roads covered in ice.
■When the Enhanced VSC is activated
The slip indicator light flashes and a warning buzzer sounds. Always drive carefully.
Reckless driving may cause an accident. Exercise particular care when the indica-
tor light flashes and a buzzer sounds.
■When TRAC and Enhanced VSC are off
Be especially careful and drive at a speed appropriate to the road conditions. As
these are systems to ensure vehicle stability and driving force, do not turn off TRAC
and Enhanced VSC unless necessary.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the specified tire pres-
sure level.
The ABS and Enhanced VSC will not function correctly if different tires are fitted on
the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the driv-
ing assist systems, and may cause the system to malfunction.

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2-5. Driving information
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Vehicle load limits
■Total load capacity and seating capacity
These details are also described on the tire and loading information label.
(→ P. 4 7 3 )
CAUTION
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires, but also degrade steering and braking
ability, resulting in an accident.
Vehicle load limits include total load capacity, seating capacity, towing
capacity and cargo capacity.
■Total load capacity: 815 lb. (370 kg)
Total load capacity means the combined weight of occupants, cargo
and luggage.
■ Seating capacity: 5 occupants (Front 2, Rear 3)
Seating capacity means the maximu m number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
Even if the number of occupants are within the seating capacity, do
not exceed the total load capacity.
■ Towing capacity
Lexus does not recommend towing a trailer with your vehicle.
■ Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occu
pants.

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2-5. Driving information
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
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 are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific gravity of
battery electrolyte.
● Have 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 size and brand, and that chains match
the size of the tires.
■ Before driving the vehicle
Perform the following according to the driving conditions.
●Do not try to forcibly open a window or move a wiper that is fro-
zen. Pour warm water over the frozen area to melt the ice. Wipe
away the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Remove any ice that has accumulated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow that
may have accumulated in the wheel well or on the brakes.

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2-5. Driving information
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When driving
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Regulations on the use of tire chains
● Regulations regarding the use of tire chains vary according to location
and type of road. Always check local regulations before installing
chains.
● Use SAE Class “S” type radial tire chains, with the exception of radial
cable chains or V-bar type chains.
• Install the chains on the rear tires.
• Refer to the explanation that comes with the tire chains for installa-
tion instructions.
● Retighten the chains after driving 1 /4 - 1 /2 mile (0.5 - 1.0 km).
■When driving the vehicle
Accelerate the vehicle slowly and drive at a reduced speed suitable
to road conditions.
■ When parking the vehicle
Park the vehicle and move the shift lever to “P” without setting the
parking brake. The parking brake may freeze up, preventing it from
being released. If necessary, block the wheels to prevent inadvert-
ent sliding or creeping.