2016 Lexus GS350 check engine

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GS350_200t_GS F_OM_OM30E86U_(U)4-2. Driving procedures
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
engine is turned on and off repeatedly in a sh
ort period of time. In this case, refrain from
operating the engine. After about 10 seconds, the steering lock motor will resume func-
tioning.
■When “Check Access System with Elec. Ke y” will be displayed on the multi-informa-
tion display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
 P. 4 2 9
■Operation of the engine switch
●When operating the engine switch, one short, firm press is enough. If the switch is
pressed improperly, the engine may not start or the engine switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the engine immediat ely after turning the engine switch off, the
engine may not start in some cases. After tu rning the engine switch off, please wait a
few seconds before re starting the engine.
■If the smart access system with push-butto n start has been deactivated in a customized
setting
 P. 5 2 0
WA R N I N G
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the accelerator
pedal while starting the engine under any circumstances.
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle is moving, do not lock or open the doors until
the vehicle reaches a safe and complete stop. Activation of the steering lock in this cir-
cumstance may lead to an accident, re sulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and hold
the engine switch for more than 2 seconds, or press it briefly 3 times or more in succes-
sion. ( P. 4 4 3 )
However, do not touch the engine switch while driving except in an emergency. Turning
the engine off while driving will not cause lo ss of steering or braking control, but the
power assist to these systems will be lost. Th is 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.

GS350_200t_GS F_OM_OM30E86U_(U)
2014-2. Driving procedures
4
Driving
NOTICE
■To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode for long
periods of time without the engine running.
●If “POWER ON” is displayed on the multi- information display, the engine switch is
not off. Exit the vehicle after turning the engine switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the engine is
stopped in another shift lever position, the engine switch will not be turned off but
instead be turned to ACCESSORY mode. If the vehicle is left in ACCESSORY
mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle checked
by your Lexus dealer immediately.
■Symptoms indicating a malfun ction with the engine switch
If the engine switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, there may be a malf unction. Contact your Lexus dealer immedi-
ately.

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GS350_200t_GS F_OM_OM30E86U_(U)4-2. Driving procedures
4
Driving
Turn signal lever
The lever will return to its original
position immediately after operation.
Right turn
Lane change to the right (move the
lever partway and release it)
The right hand signals will flash 3 times.
Lane change to the left (move the
lever partway and release it)
The left hand signals will flash 3 times.
Left turn
■If the turn signals do not stop flashing af ter turning left or right, or if you want
to stop them flashing
Operate the lever in the opposite direction to either position or . If you
move the lever to either position or , the selected turn signals will flash.
■Turn signals can be operated when
The engine switch is in IGNITION ON mode.
■If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
■If the turn signals stop flashing befo re a lane change has been performed
Operate the lever again.
Operating instructions
1
2
3
4
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14

GS350_200t_GS F_OM_OM30E86U_(U)
2114-2. Driving procedures
4
Driving
■Parking brake operation
●When the engine switch is not in IGNITION ON mode, the parking brake cannot be
released using the parking brake switch.
●When the engine switch is not in IGNI TION ON mode, automatic mode (automatic
brake setting and releas ing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system may
restrict operation to prevent overheating. If this happens, refrain from operating the
parking brake. Normal operation will return after about 1 minute.
●In situations such as when parking on a steep slope*, the maximum amount of braking
force can be used by pressing the parking brake switch with the parking brake already
set.
*: Use wheel chocks when parking on a steep slope.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light
●Depending on the engine switch mode, the parking brake indicator light will come on
and stay on as described below:
IGNITION ON mode: Comes on until the parking brake is released.
Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking brake indi-
cator light will stay on for about 15 seco nds. This does not indicate a malfunction.
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. ( P. 4 5 4 , 4 6 0 )
Depending on the condition, the par king brake indicator light may flash.
■Parking brake engaged warning buzzer
P. 4 6 3
■Usage in winter time
P. 3 1 7
NOTICE
■When parking the vehicle
Before you leave the vehicle, set the parking brake, shift the shift lever to P and make
sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the parking brake cannot be released due to a malfunction
Use the parking brake release tool to manually release the parking brake. (P. 5 1 8 )
Driving the vehicle with the parking brake set will lead to brake components overheat-
ing, which may affect braking perf ormance and increase brake wear.

GS350_200t_GS F_OM_OM30E86U_(U)
2134-2. Driving procedures
4
Driving
■When the parking brake is set automatically while the system is holding the brakes
The parking brake will not be released auto matically. Perform one of the following proce-
dures to release the parking brake and conf irm that the parking brake indicator light
turns off. ( P. 2 1 0 )
●With the brake pedal depressed, operate the parking brake switch.
●Fasten your seat belt, check that the shift leve r is in either D or R and slowly depress the
accelerator pedal.
■Warning message and buzzers
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for caution. ( P. 4 5 9 )
WA R N I N G
■When the vehicle is on a steep incline
When using the brake hold system on a stee p incline exercise caution. The brake hold
function may not hold the vehicle in such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when the gripping ability of the tires has been
exceeded. Do not use the system when stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed for use when parking the vehicle for a long
period of time. Turning the engine switch of f while the system is holding the brake may
release the brake, which would cause the vehicle to move. When operating the engine
switch, depress the brake pedal, set the parking brake and shift the shift lever to P.

377
GS350_200t_GS F_OM_OM30E86U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior................. 378
Cleaning and protecting the vehicle interior .................. 382
6-2. Maintenance Maintenance requ irements ...385
General maintena nce .............. 387
Emission inspection and maintenance (I/M)
programs ....................................390
6-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................. 391
Hood ............................................... 393
Positioning a floor jack ............. 394
Engine compartment ............... 396
Tires ................................................... 413
Tire inflation pressure ............... 422
Wheels ........................................... 425
Air conditioning filter ................427
Electronic key battery .............. 429
Checking and replacing fuses ............................................... 431
Headlight aim (vehicles with single-beam headlights)....... 435
Light bulbs..................................... 437

387
GS350_200t_GS F_OM_OM30E86U_(U)6-2. Maintenance
6
Maintenance and care
General maintenance
Listed below are the general maintenance items that should be performed at
the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende
d that any problem you notice should
be brought to the attention of your Lexu s dealer or qualified service shop for
advice.
Engine compartment
ItemsCheck points
BatteryCheck the battery fluid level and connections.
(  P. 4 1 0 )
Brake fluidIs the brake fluid at the correct level? ( P. 4 0 9 )
Engine coolantIs the engine coolant at the correct level?
( P. 4 0 6 )
Engine oilIs the engine oil at the correct level? ( P. 4 0 1 )
Exhaust systemThere should not be any fumes or strange sounds.
Radiator/condenserThe radiator and condenser should be free from for-
eign objects. (P. 4 0 8 )
Wa s h e r f l u i dIs there sufficient washer fluid? ( P. 4 1 2 )

GS350_200t_GS F_OM_OM30E86U_(U)
3896-2. Maintenance
6
Maintenance and care
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors/trunk operate smoothly?
Engine hood• Does the engine hood lock system work prop-erly?
Fluid leaks• There should not be any signs of fluid leakageafter the vehicle has been parked.
Ti r e s
• Is the tire inflation pressure correct?
• The tires should not be damaged or excessively
worn.
• Have the tires been rotated according to the
maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers
• The wiper blades should not show any signs of cracking, splitting, wear, contamination or defor-
mation.
• The wiper blades should clear the windshield without streaking or skipping.
WA R N I N G
■If the engine is running
Turn the engine off and ensure that there is adequate ventilation before performing
maintenance checks.