inflation pressure Lexus GS250 2012 Owner's Manual

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1
8 7
6
5
4
3
2
GS350/250_EE (OM30C36E)
5-5. Using the interior lights
Interior lights list ............... 611
Interior light ...................... 612
• Personal lights............... 612
5-6. Using the storage features
List of storage features ...... 614
• Glove box...................... 616
• Console box .................. 617
• Cup holders ................... 618
• Auxiliary boxes............. 620
Trunk features ................... 621
5-7. Other interior features
Sun visors and vanity mir-
rors....................................624
Clock ................................. 625
Ashtrays ............................ 626
Power outlets........................627
Heated steering wheel ....... 629
Seat heaters/ seat ventila-
tors.....................................631
Armrest.............................. 635
Rear sunshade/rear door sun-
shades................................636
Trunk storage extension .... 639
Coat hooks......................... 640
Assist grip ......................... 641
Utility hook ....................... 6426-1. Maintenance and care
Cleaning and protecting the
vehicle exterior................644
Cleaning and protecting the
vehicle interior.................648
6-2. Maintenance
Maintenance require-
ments...............................651
6-3. Do-it-yourself maintenance
Do-it-yourself service precau-
tions...................................654
Hood .................................. 657
Positioning a floor jack ..... 658
Engine compartment ......... 660
Tires................................... 672
Tire inflation pressure ....... 689
Wheels............................... 691
Air conditioning filter ....... 693
Electronic key battery ....... 695
Checking and replacing
fuses...................................698
Light bulbs ........................ 7206Maintenance and care

15Pictorial index
GS350/250_EE (OM30C36E)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 241
Precautions against winter season. . . . . . . . . . . . . . . . . . . . . . . P. 359
To prevent freezing (windshield wiper de-icer)
*1 . . . . . . . . . . P. 431
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . P. 646
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 249
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 249
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 838
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 672
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 850
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 359
Checking/rotation/tire pressure warning system
*1 . . . . . . . . . P. 672
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 782, 797
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 657
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 657
Engine compartment cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 661
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 839
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 829
Warning messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 763
Headlights/front position lights/daytime running lights . . . . . . P. 228
Front fog lights
*1/rear fog light*2. . . . . . . . . . . . . . . . . . . . . . P. 239
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 222
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 228
Stop lights
Hill-start assist control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 339
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 228
Back-up light
*2
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 720, Watts: P. 852)
*1: If equipped
*2: They may be located on the opposite side depending on the target region.
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9
10
11
12
13
14

1022. Instrument cluster
GS350/250_EE (OM30C36E)
Multi-information display
The multi-information display presents the driver with a variety of
driving-related data including the current outside air temperature.
Eco Driving Indicator (P.
104)
Outside temperature display
(P. 104)
Trip information (P. 104)
Displays driving range, fuel con-
sumption and other cruising
related information

Tire inflation pressure
(if equipped) (P. 106)
Drive monitor (P. 106)
Lexus parking assist-sensor
display
* (if equipped) (P.
286)
Dynamic radar cruise control
display
* (if equipped) (P.
286)
LKA (Lane-Keeping Assist)
display
* (if equipped) (P.
278)
Warning messages (P. 757)
Automatically displayed when a
malfunction occurs in one of the
vehicle’s systems. Display can be
switched by pressing the “DISP”
button. (P. 104)
Display contents

1062. Instrument cluster
GS350/250_EE (OM30C36E)
Tire inflation pressure (if equipped)
Outside temperature, average
fuel consumption after refueling
or driving range can be selected
and displayed.
If displayed on the drive moni-
tor, other trip information or
warning messages can be dis-
played simultaneously.
For display and selection proce-
dures, follow the “Setting up the
displays”.
The information displayed on the
drive monitor will not be displayed
on the trip information screen.
Displays inflation pressure of each tire.
For the vehicles with a compact spare tire: The
inflation pressure of the spare tire will not be dis-
played.
Drive monitor

1102. Instrument cluster
GS350/250_EE (OM30C36E)
Tire inflation pressure (if equipped)
It may take a few minutes to display the tire inflation pressure after the
engine switch is turned to IGNITION ON mode. It may also take a few
minutes to display the tire inflation pressure after inflation pressure has
been adjusted.
“---” may be displayed if the tire position information cannot be determined
due to unfavorable radio wave conditions.
Tire inflation pressure changes with temperature. The displayed values may
also be different from the values measured using a tire pressure gauge.
Liquid crystal display
Small spots or light spots may appear on the display. This phenomenon is
characteristic of liquid crystal displays, and there is no problem continuing to
use the display.
Customization
Setting of available languages can be changed. (Customizable features P.
857)
CAUTION
The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal
information display. At extremely low temperatures, the information dis-
play monitor may respond slowly, and display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear
number appearing on the display. This lag could cause the driver to down-
shift again, causing rapid and excessive engine braking and possibly an
accident resulting in death or injury.
Cautions during setting up the display
As the engine needs to be running during setting up the display, ensure that
the vehicle is parked in a place with adequate ventilation. In a closed area
such as a garage, exhaust gases including harmful carbon monoxide (CO)
may collect and enter the vehicle. This may lead to death or a serious health
hazard.

2044-1. Before driving
GS350/250_EE (OM30C36E)
Tire information
Increase the tire inflation pressure to 20.0 kPa (0.2 kgf/cm2 or bar, 3 psi)
greater than the recommended value when towing. (P. 850)
Increase the air pressure of the trailer tires in accordance with the total
trailer weight and according to the values recommended by the manufac-
turer of your trailer.
Break-in schedule
Lexus recommends that vehicles fitted with new power train components
should not be used for towing trailers for the first 800 km (500 miles).
Safety checks before towing
Check that the maximum load limit for the towing hitch/bracket hitch ball is
not exceeded. Bear in mind that the coupling weight of the trailer will add
to the load exerted on the vehicle. Also make sure that you will not be tow-
ing a load that exceeds the maximum permissible axle capacity.
Ensure that the trailer load is secure.
Supplementary outside rear view mirrors should be added to the vehicle if
the traffic behind cannot be clearly seen with standard mirrors. Adjust the
extending arms of these mirrors on both sides of the vehicle so that they
always provide maximum visibility of the road behind.
Maintenance
Maintenance must be performed more frequently when using the vehicle
for towing due to the greater weight burden placed on the vehicle compared
to normal driving.
Retighten all bolts securing the hitching ball and bracket after towing for
approximately 1000 km (600 miles).

2804-5. Using the driving support
GS350/250_EE (OM30C36E)
After the vehicle has been parked in the sun
The LKA system functions may not be available and a warning message
(P. 767) will be displayed for a while after driving has started. In such
cases, turn the LKA system off and turn it on again after normal temperature
returns. When the temperature in the cabin decreases and the temperature
around the camera sensor (P. 274) becomes suitable for its operation, the
functions will begin to operate.
If there are lane markers on only one side of the vehicle
The lane keeping assist function will not operate. Also, the lane departure
warning will not operate for the side on which lane markers could not be rec-
ognized.
Conditions in which the function may not operate correctly
In the following conditions, the LKA system functions may not operate, or it
may not be possible to ensure adequate performance. Also, the camera sensor
may be unable to recognize lane lines causing the lane departure warning
function to operate incorrectly, or the lane keeping assist function may not
operate properly. However, this does not indicate a malfunction.
When driving through an area with no lane markers, such as a tollbooth, a
crossing or before a ticket checkpoint
When driving on a sharp curve
When lanes are extremely narrow or extremely wide
When the vehicle leans to one side an unusual amount due to a heavy load
or improper tire inflation pressure
When the following distance between your vehicle and the vehicle ahead is
extremely short
When the lane markers are yellow (These may be more difficult for the sys-
tem to recognize compared to white markers.)
When the lane markers are broken, “Raised pavement marker” or stones
When lane markers are obscured or partially obscured by sand, dirt, etc.
When there are shadows on the road running parallel with lane markers, or
if a shadow covers the lane markers
When driving on a particularly bright road surface, such as concrete
When driving on a road surface that is bright due to reflected light
When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel
When sunlight or the headlights of oncoming vehicles are shining directly
into the camera lens

2824-5. Using the driving support
GS350/250_EE (OM30C36E)
CAUTION
Situations unsuitable for LKA
Do not use LKA in any of the following situations.
Otherwise, the system may not function correctly and could result in an
accident.
When driving with snow tires, tire chains, a spare tire, or similar equip-
ment
When the tires have been excessively worn, or when the tire inflation
pressure is low
When there are objects or structures along the roadside that might be mis-
interpreted as lane markers (such as guardrails, curb, reflector posts, etc.)
When driving on snowy roads
When pavement lane markers are difficult to see due to rain, snow, fog,
etc.
When there are visible lines on the pavement from road repairs, or if the
remains of old lane markers are still visible on the road
When driving on slippery roads, such as those covered with rain, ice or
snow
When driving in a lane other than the driving or passing lanes on a free-
way or highway
When driving on a road with lane closures due to maintenance, or when
driving in a temporary lane
When towing a trailer
NOTICE
To prevent damage to or incorrect operation of the LKA system
Do not modify the headlights or attach stickers to the surface of the lights.
Do not modify the suspension, or replace them with non-genuine parts.
Do not install or place anything on the hood or the grille. Also, do not
install a grille guard (bull bars, kangaroo bar etc.).
Do not modify the sun visor or replace it with anything other than a genu-
ine Lexus product.
If your windshield needs repairs, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

3404-5. Using the driving support
GS350/250_EE (OM30C36E)
CAUTION
Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRC and VSC systems will not function correctly if different
tires are installed on the vehicle.
Contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional for further information when replacing tires or
wheels.
Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will
affect the driving assist systems, and may cause a system to malfunction.

643
6Maintenance and care
GS350/250_EE (OM30C36E)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ......... 644
Cleaning and protecting
the vehicle interior .......... 648
6-2. Maintenance
Maintenance
requirements ................... 651
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions...................... 654
Hood ................................. 657
Positioning a floor jack ..... 658
Engine compartment ......... 660
Tires .................................. 672
Tire inflation pressure ....... 689
Wheels .............................. 691
Air conditioning filter ....... 693
Electronic key battery ....... 695
Checking and replacing
fuses ................................ 698
Light bulbs ........................ 720