air condition Lexus GS350 2010 Service Manual

530
5-1. Essential information
GS_G_U (OM30C80U)
January 27, 2010 4:47 pm
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points
higher than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor
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5
When trouble arises
539
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
January 27, 2010 4:47 pm
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire is replaced with the spare tire. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes.
■If the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters are used.
●If the ID code on the tire pressure warning valves and transmitters is not regis-
tered in the tire pressure warning computer.
●If the tire pressure warning select switch is set to a different tire setting.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher.
The tire pressure warning system may be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If there is a lot of snow or ice on the vehicle, in particular around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used. (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
●If tire chains are used.
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578
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
January 27, 2010 4:47 pm
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( →P. 4 5 0 )
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the engine immediately and call your Lexus dealer.
After the engine has cooled
down sufficiently, check the
coolant level and inspect the
radiator core (radiator) for any
leaks.STEP1
STEP2
STEP3
STEP4
STEP5
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611
6-1. Specifications
6
Vehicle specifications
GS_G_U (OM30C80U)
January 27, 2010 4:47 pm
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
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GS_G_U (OM30C80U)
January 27, 2010 4:48 pm
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-Lock Brake System
AFSAdaptive Front-lighting System
ALRAutomatic Locking Retractor
CRSChild Restraint System
DISPDisplay
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
Enhanced VSCEnhanced Vehicle Stability Control
EPSElectric Power Steering
GAWRGross Axle Weight Ratings
GPSGlobal Positioning System
I/MEmission inspection and maintenance
INFOInformation
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
MMTMethylcy clopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
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GS_G_U (OM30C80U)
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Alphabetical index
Alphabetical index
A/C ............................................................ 246
ABS............................................................ 200
ACCESSORY mode .......................... 136
Active stabilizer suspension system.................................................... 200
Adaptive variable
suspension system ............................. 199
Air conditioning system
Air conditioning filter ....................... 479
Automatic air conditioning system .................................................. 246
Airbags
Airbag operating conditions........... 96
Airbag precautions for your child............................................. 100
Airbag warning light ........................535
Curtain shield airbag precautions ........................................ 103
General airbag pr ecautions ......... 100
Locations of airbags............................ 93
Modification and disposal of airbags .................................................. 104
Proper driving posture ........................ 91
Side airbag precautions .................. 100
Side and curtain shield airbags operating conditions ....................... 96
SRS airbags ............................................. 93 Alarm............................................................ 87
Antenna .................................................... 266
Anti-lock brake system ......................200
Armrest .................................................... 402
Ashtrays.................................................... 397
Audio input.............................................. 328
Audio system
Antenna.................................................. 266
Audio input........................................... 328
AUX port .............................................. 328
Bluetooth
® audio..............................308
CD player/changer ......................... 269
DVD information ...............................297
DVD player/changer ..................... 280
DVD video/audio............................. 280
iPod
®........................................................ 316
MP3/WMA disc................................276
Optimal use ..........................................326
Portable music player ..................... 328
Radio ....................................................... 260
Steering switches ...............................329
USB memory ........................................ 316
Video CD ..............................................294
Automatic headlight leveling
system ..................................................... 159
Automatic light control system.........157
Automatic transmission If the shift lever cannot be
shifted from “P” ............................... 569
Mode select switch ............................ 140
S mode ....................................................... 141
AUX port................................................. 328
A
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