check engine light Lexus GS350 2012 User Guide

2464-3. Operating the lights and wipers
GS350/250_EE (OM30C36E)
Raindrop sensor (vehicles with rain-sensing windshield wipers)
If the wiper is turned to AUTO mode while the engine switch is in IGNI-
TION ON mode, the wipers will operate once to show that AUTO mode is
activated.
If the temperature of the raindrop sensor is 85°C (185°F) or higher, or -
30°C (-22°F) or lower, automatic operation may not occur. In this case,
operate the wipers in any mode other than AUTO mode.
When the windshield wipers are in temporary operation
AUTO mode cannot be activated even if is pressed.
If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
windshield washer fluid reservoir.
The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from
the rising or setting of the sun intermit-
tently strikes the windshield, or if bugs
etc. are present on the windshield.
CAUTION
Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched
or the windshield is subject to vibration in AUTO mode. Take care that
your fingers or anything else do not become caught in the windshield wip-
ers.
Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes
warm. The fluid may freeze on the windshield and cause low visibility.
This may lead to an accident, resulting in death or serious injury.

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

677 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
When to replace your vehicle’s tires
Tires should be replaced if:
You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric, and bulges indicating internal damage
A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Replacing tires and wheels (vehicles with the tire pressure warning system)
If the ID code of the tire pressure warning valve and transmitter is not regis-
tered, the tire pressure warning system will not work properly. After driving
for about 10 minutes, the tire pressure warning light blinks for 1 minute and
stays on to indicate a system malfunction.
Tire life
Any tire over 6 years old must be checked by a qualified technician even if it
has seldom or never been used or damage is not obvious.
Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pres-
sure checks. Make sure to check tire inflation pressure as part of your routine
of daily vehicle checks.
When rotating the tires (vehicles with the tire pressure warning system featur-
ing a tire inflation pressure display function)
Make sure that the engine switch is off. If the tires are rotated while the
engine switch is in IGNITION ON mode, the tire position information will
not be updated.
If this accidentally occurs, either turn the engine switch to off and then to
IGNITION ON mode, or initialize the system after checking that the tire
pressure is properly adjusted.

7226-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Light bulbs
Check the wattage of the light bulb to be replaced. (P. 852)
P. 661
You may replace the following bulbs by yourself. The difficulty
level of replacement varies depending on the bulb. As there is a
danger that components may be damaged, we recommend that
replacement is carried out by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Preparing for light bulb replacement
Removing the engine compartment covers

7557-2. Steps to take in an emergency
7
When trouble arises
GS350/250_EE (OM30C36E)
When a tire is replaced with a spare tire
Vehicles with a compact spare tire: The compact spare tire is not equipped
with a 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 has been
replaced with the spare tire.
Vehicles with a full-size spare tire: The spare tire is also equipped with a tire
pressure warning valve and transmitter. The tire pressure warning light will
turn on if the tire inflation pressure of the spare tire is low. If a tire goes flat,
the tire pressure warning light will not turn off even though the flat tire has
been replaced with the spare tire.
Conditions that the tire pressure warning system may not function properly
P. 6 7 8
If the tire pressure warning light frequently comes on after blinking for 1 min-
ute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to IGNITION ON mode, have it
checked by any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

7747-2. Steps to take in an emergency
GS350/250_EE (OM30C36E)After taking the specified steps to correct the suspected problem,
check that the warning message and light go off.
Wa r n i n g m e s s a g eDetailsCorrection procedure
(If equipped)
Indicates that the pre-
crash safety system is
not currently functional
because the grille cover
or the sensor is dirty
This message also
appears when the
pre-crash safety sys-
tem is not functional
due to overheating.Check the grille cover
and the sensor and
clean them if they are
dirty.
In case of overheat-
ing, the system will
become functional
once the system
cools down.
Have the malfunction repaired immediately.
(Flashes)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The electronic
key is not
detected when an
attempt is made to
start the engine.Start the
engine
with the
electronic
key pres-
ent.
(Flashes)

8488-1. Specifications
GS350/250_EE (OM30C36E)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Electrical system
Battery
Open voltage at 20 C
(68 F):
Specific gravity read-
ing at 20C (68F):12.6 12.8 V Fully charged
12.2 12.4 V Half charged
11.8 12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
1.250  1.290 Fully charged
1.160  1.200 Half charged
1.060  1.100 Discharged
Charging rates
Quick charge
Slow charge15 A max.
5 A max.
Automatic transmission
Fluid capacity*GS2507.5 L (7.9 qt., 6.6 Imp.qt.)
GS35010.0 L (10.6 qt., 8.8 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

880Alphabetical index
GS350/250_EE (OM30C36E)
Eco drive mode .........................328
Eco Driving Indicator ........109, 114
Electric Power Steering (EPS) ..334
Function ................................334
Warning light........................751
Warning message..................762
Electronic key............................118
Battery-saving function ........129
If the electronic key does not
operate properly .................822
Replacing the battery ............697
Emergency, in case of
If the battery is discharged ...825
If the electronic key does not
operate properly .................822
If the engine will not start.....816
If the parking brake cannot
be released ..........................819
If the shift lever cannot be
shifted from P .....................818
If the warning buzzer sounds749
If the warning light turns on .749
If the warning message is
displayed ............................757
If you have a flat tire ....783, 798
If you think something
is wrong ..............................747
If your vehicle becomes stuck ....
833
If your vehicle has to be
stopped in an emergency ....739
If your vehicle needs to
be towed .............................740
If your vehicle overheats ......830Emergency brake signal ........... 334
Emergency flashers .................. 738
Emergency tire puncture
repair kit ................................. 798
Engine....................................... 838
Accessory mode................... 208
Compartment ....................... 660
Engine switch ...................... 207
Hood .................................... 657
How to start the engine ........ 207
Identification number .......... 837
If the engine will not start .... 816
Ignition switch
(engine switch) .................. 207
Overheating ......................... 830
Engine compartment cover....... 661
Engine coolant .......................... 665
Capacity ............................... 847
Checking .............................. 665
Preparing and checking
before winter ..................... 359
Engine coolant temperature
gauge ........................................ 99
Engine immobilizer system ........ 80
Engine oil ................................. 662
Capacity ............................... 839
Checking .............................. 662
Oil level warning message... 766
Oil pressure warning
message ............................. 758
Preparing and checking
before winter ..................... 359
E

889Alphabetical index
GS350/250_EE (OM30C36E)
Tire pressure warning reset
switch .................................675
Trunk closer switch..............151
Trunk opener switch .............150
Trunk opener main switch ....151
Vehicle-to-vehicle distance
button .................................261
VSC OFF switch ..................335
Window lock switch .............178
Windshield wipers
and washer switch ..............241
Tachometer ..........................99, 114
Tail lights ..................................228
Light switch ..........................228
Replacing light bulbs ............735
Welcome light illumination
control ................................123
Talk switch ........................402, 567
Telephone switches ...................543
Theft deterrent system
Alarm ......................................86
Double locking system ...........85
Engine immobilizer system ....80
Intrusion sensor and tilt sensor ...
89
Tire inflation pressure ...............691
Maintenance data ..................850
Tire inflation pressure display
function ..............................106
Warning light........................753
Warning message..........772, 772Tire pressure warning system ... 674
Function ............................... 674
Initializing............................ 675
Installing tire pressure warning
valves and transmitters ...... 674
Registering ID codes ........... 676
Tire pressure warning reset
switch ................................ 675
Warning light ....................... 753
Warning message......... 772, 772
Tires .......................................... 672
Chains .................................. 361
Checking .............................. 672
Emergency tire puncture
repair kit ............................ 798
If you have a flat tire.... 783, 798
Inflation pressure ................. 850
Replacing ............................. 783
Rotating tires........................ 673
Size ...................................... 850
Snow tires ............................ 363
Spare tire .............................. 783
Tire inflation pressure display
function ............................. 106
Tire pressure warning system ....
674
Warning light ....................... 753
Warning message................. 772
Tools ................................. 784, 799
Top strap ..................................... 74
T