stop start Lexus GS250 2012 Owner's Manual

TABLE OF CONTENTS6
GS350/250_EE (OM30C36E)
7-1. Essential information
Emergency flashers ........... 738
If your vehicle has to be stopped
in an emergency.................7397-2. Steps to take in an emergency
If your vehicle needs to be
towed...............................740
If you think something is
wrong................................747
Fuel pump shut off system 748
If a warning light turns on or a
warning buzzer sounds.....749
If a warning message is dis-
played................................757
If you have a flat tire (vehicles
with a spare tire)...............782
If you have a flat tire (vehicles
without a spare
tire).....................................797
If the engine will not start . 815
If the shift lever cannot be
shifted from P....................817
If the parking brake cannot be
released.............................818
If the electronic key does not
operate properly................821
If the vehicle battery is dis-
charged..............................824
If your vehicle overheats ... 829
If your vehicle becomes
stuck...................................832
7When trouble arises

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.
8
9
10
11
12
13
14

16Pictorial index
GS350/250_EE (OM30C36E)
Instrument panel (Left-hand drive vehicles)
Engine switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 207
Starting the engine/changing the modes . . . . . . . . . . . . . . . . . . P. 207
Emergency stop of the engine . . . . . . . . . . . . . . . . . . . . . . . . . . P. 739
When the engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . P. 815
Warning messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 774
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 740
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . . P. 817
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 98
Reading the meters/adjusting the instrument panel light . . . . . . P. 98
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 94
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . P. 7491
2
3

24Pictorial index
GS350/250_EE (OM30C36E)
Instrument panel (Right-hand drive vehicles)
Engine switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 207
Starting the engine/changing the modes . . . . . . . . . . . . . . . . . . P. 207
Emergency stop of the engine . . . . . . . . . . . . . . . . . . . . . . . . . . P. 739
When the engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . P. 815
Warning messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 774
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 740
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . . P. 817
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 98
Reading the meters/adjusting the instrument panel light . . . . . . P. 98
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . P. 94
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . P. 7491
2
3

371-1. For safe use
1
For safety and security
GS350/250_EE (OM30C36E)Make sure that you can see backward clearly by adjusting the
inside and outside rear view mirrors properly. (P. 171, 174)
Adjusting the mirrors
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
Do not place a cushion between the driver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce
the effectiveness of the seat belt and head restraint.
Do not place anything under the front seats.
Objects placed under the front seats may become jammed in the seat
tracks and stop the seat from locking in place. This may lead to an acci-
dent and the adjustment mechanism may also be damaged.
When driving over long distances, take regular breaks before you start to
feel tired.
Also, if you feel tired or sleepy while driving, do not force yourself to
continue driving and take a break immediately.

801-2. Theft deterrent system
GS350/250_EE (OM30C36E)
Engine immobilizer system
The indicator light flashes after
the engine switch has been
turned off to indicate that the
system is operating.
The indicator light stops flashing
after the engine switch has been
turned to ACCESSORY or
IGNITION ON mode to indicate
that the system has been can-
celed.
System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
Conditions that may cause the system to malfunction
If the grip portion of the key is in contact with a metallic object
If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
The vehicle’s keys have built-in transponder chips that prevent the
engine from starting if a key has not been previously registered in
the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.

871-2. Theft deterrent system
1
GS350/250_EE (OM30C36E)
For safety and security
Do one of the following to deactivate or stop the alarm:
Unlock the doors or open the trunk using the entry function or
wireless remote control.
Turn the engine switch to ACCESSORY or IGNITION ON
mode, or start the engine. (The alarm will be deactivated or
stopped after a few seconds.)
System maintenance
The vehicle has a maintenance-free type alarm system.
Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of
the following:
Nobody is in the vehicle.
The windows and moon roof (if equipped) are closed before the alarm is
set.
No valuables or other personal items are left in the vehicle.
Deactivating or stopping the alarm

1293-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS350/250_EE (OM30C36E)
Battery-saving function
The battery-saving function will be activated in order to prevent the elec-
tronic key battery and the vehicle battery from being discharged while the
vehicle is not in operation for a long time.
In the following situations, the smart entry & start system may take some
time to unlock the doors.
• The electronic key has been left in an area of approximately 2 m (6 ft.) of
the outside of the vehicle for 10 minutes or longer.
• The smart entry & start system has not been used for 5 days or longer.
If the smart entry & start system has not been used for 14 days or longer, the
doors cannot be unlocked at any doors except the driver’s door. In this case,
take hold of the driver’s door handle, or use the wireless remote control or
the mechanical key, to unlock the doors.
Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping
the electronic key from receiving radio waves.
Press twice while pressing and
holding . Confirm that the elec-
tronic key indicator flashes 4 times.
While the battery-saving mode is set, the
smart entry & start system cannot be
used. To cancel the function, press any of
the electronic key buttons.

1343-2. Opening, closing and locking the doors and trunk
GS350/250_EE (OM30C36E)
Electronic key battery depletion
The standard battery life is 1 to 2 years. (The card key battery life is about a
year and a half.)
If the battery becomes low, an alarm will sound in the cabin when the
engine stops. (P. 779)
As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms
indicate that the electronic key battery may be depleted. Replace the battery
when necessary. (P. 695)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
To avoid serious deterioration, do not leave the electronic key within 1 m (3
ft.) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
•Table lamps
• Glass top ranges
When the electronic key battery is fully depleted
P. 6 9 5
Customization
Settings (e. g. smart entry & start system) can be changed.
(Customizable features: P. 855)
If the smart entry & start system has been deactivated in a customized setting
Locking and unlocking the doors and opening the trunk:
Use the wireless remote control or mechanical key. (P. 141, 821)
Starting the engine and changing engine switch modes:P. 8 2 2
Stopping the engine: P. 2 0 8

1553-2. Opening, closing and locking the doors and trunk
3
Operation of each component
GS350/250_EE (OM30C36E)
CAUTION
Trunk easy closer (vehicles with power trunk lid)
Power trunk lid (if equipped)
Observe the following precautions when operating the power trunk lid.
Failure to do so may cause serious injury.
Check the safety of the surrounding area to make sure there are no obsta-
cles or anything that could cause any of your belongings to get caught.
If anyone is in the vicinity, make sure they are safe and let them know that
the trunk is about to open or close.
If the trunk closer switch is pressed while the trunk lid is opening during
automatic operation, the trunk lid stops opening. Take extra care when on
an incline, as the trunk lid may open or close suddenly.
On an incline, the trunk lid may fall after it opens automatically. Make
sure the trunk lid is fully open and secure before using the trunk.
In the following situations, the power trunk lid may detect an abnormality
and automatic operation may be stopped. In this case, the trunk lid has to
be operated manually. Take extra care in this situation, as the stopped
trunk lid may suddenly fall, causing an accident.
• When the trunk lid contacts an obstacle
• When the battery voltage suddenly drops, such as when the engine
switch is turned to IGNITION ON mode or the engine is started during
automatic operation
Do not attach any accessories other than genuine Lexus parts to the trunk
lid. The power trunk lid may not operate, causing itself to malfunction, or
the trunk lid may fall closed again after it is opened.
In the event that the trunk lid is left
slightly open, the trunk easy closer will
automatically close it to the fully closed
position. It takes several seconds before
the trunk easy closer begins to operate.
Be careful not to catch fingers or any-
thing else in the trunk lid, as this may
cause bone fractures or other serious