2012 Lexus GS350 engine

1803-5. Opening, closing the windows and moon roof
GS350/250_EE (OM30C36E)
Door lock linked window operation
The power windows can be opened and closed using the mechanical key.*
(P. 821)
The power windows can be opened and closed using the wireless remote
control.
* (P. 141)
*: These settings must be customized at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
When the battery is disconnected
The window lock switch is disabled. If necessary, press the window lock
switch after reconnecting the battery.
Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display
in the instrument cluster when the engine switch is turned off and the driver’s
door is opened with the power windows open.
Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 855)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Closing the windows
Check to make sure that all passengers do not have any part of their body
in a position where it could be caught when a window is being operated.
Do not allow children to operate the power windows.
Closing a power window on someone can cause serious injury, and in
some instances, even death.
Jam protection function
Never use any part of your body to intentionally activate the jam protec-
tion function.
The jam protection function may not work if something gets caught just
before the window fully closes.

1823-5. Opening, closing the windows and moon roof
GS350/250_EE (OM30C36E)
The moon roof can be operated when
The engine switch is in IGNITION ON mode.
Operating the moon roof after turning the engine off
The moon roof can be operated for approximately 45 seconds after the
engine switch is turned to ACCESSORY mode or turned off. It cannot, how-
ever, be operated once either front door is opened.
Jam protection function
If an object is detected between the moon roof and the frame while the moon
roof is closing or tilting down, travel is stopped and the moon roof opens
slightly.
Sunshade
The sunshade can be opened and closed manually. However, the sunshade
will open automatically when the moon roof is opened.
Door lock linked moon roof operation
The moon roof can be opened and closed using the mechanical key.* (P.
821)
The moon roof can be opened and closed using the wireless remote con-
trol.
*
(P. 141)
*: These settings must be customized at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

1843-5. Opening, closing the windows and moon roof
GS350/250_EE (OM30C36E)
Moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display
in the instrument cluster when the engine switch is turned off and the driver’s
door is opened with the moon roof open.
Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 855)
CAUTION
Observe the following precautions.
Failure to do so may cause death or serious injury.
Opening the moon roof
Do not allow any passengers to put their hands or heads outside the vehi-
cle while it is moving.
Do not sit on top of the moon roof.
Closing the moon roof
Check to make sure that all passengers do not have any part of their body
in a position where it could be caught when the moon roof is being oper-
ated.
Do not allow children to operate the moon roof.
Closing the moon roof on someone can cause death or serious injury.
Jam protection function
Never use any part of your body to intentionally activate the jam protec-
tion function.
The jam protection function may not work if something gets caught just
before the moon roof fully closes.

185
4Driving
GS350/250_EE (OM30C36E)
4-1. Before driving
Driving the vehicle............ 186
Cargo and luggage ............ 197
Trailer towing.................... 198
4-2. Driving procedures
Engine (ignition) switch.... 207
Automatic transmission .... 214
Turn signal lever ............... 222
Parking brake .................... 224
Horn .................................. 227
4-3. Operating the lights
and wipers
Headlight switch............... 228
Automatic High Beam ...... 233
Fog light switch ................ 239
Windshield wipers
and washer ...................... 241
Headlight cleaner switch ... 2484-4. Refueling
Opening the fuel tank cap . 249
4-5. Using the driving support
systems
Cruise control ................... 254
Dynamic radar cruise
control ............................. 258
LKA
(Lane-Keeping Assist) .... 274
Lexus
parking assist-sensor....... 284
Lexus
parking assist monitor..... 297
Driving mode select switch326
Driving assist systems ...... 331
Hill-start assist control ...... 339
PCS (Pre-Crash Safety
system)............................ 341
BSM (Blind Spot Monitor) 352
4-6. Driving tips
Winter driving tips ............ 359

1864-1. Before driving
GS350/250_EE (OM30C36E)
Driving the vehicle
P. 207
With the brake pedal depressed, shift the shift lever to D. (P.
214)
If the parking brake is in manual mode, release the parking
brake.
(P. 224)
Gradually release the brake pedal and gently depress the acceler-
ator pedal to accelerate the vehicle.
With the shift lever in D, depress the brake pedal.
If necessary, set the parking brake.
If the vehicle is to be stopped for an extended period of time, shift the shift
lever to P or N. (P. 214)
With the shift lever in D, depress the brake pedal.
If the parking brake is in manual mode, set the parking brake.
(P. 224)
Shift the shift lever to P. (P. 214)
If parking on a hill, block the wheels as needed.
Press the engine switch to stop the engine.
The following procedures should be observed to ensure safe driv-
ing:
Starting the engine
Driving
Stopping
Parking the vehicle
1
2
3
1
2
1
2
3
4

1884-1. Before driving
GS350/250_EE (OM30C36E)Make sure that the parking brake is set and shift the shift lever to
D.
Gently depress the accelerator pedal.
Release the parking brake.
When starting off on a uphill
The hill-start assist control is available. (P. 339)
Driving in the rain
Drive carefully when it is raining, because visibility will be reduced, the
windows may become fogged-up, and the road will be slippery.
Drive carefully when it starts to rain, because the road surface will be espe-
cially slippery.
Refrain from high speeds when driving on an expressway in the rain,
because there may be a layer of water between the tires and the road sur-
face, preventing the steering and brakes from operating properly.
Engine speed while driving
In the following conditions, the engine speed may become high while driv-
ing. This is due to automatic up-shifting control or down-shifting implemen-
tation to meet driving conditions. It does not indicate sudden acceleration.
The vehicle is judged to be driving uphill or downhill
When the accelerator pedal is released
When sport mode is selected (P. 3 2 6 )
Starting off on a steep uphill
1
2
3

1904-1. Before driving
GS350/250_EE (OM30C36E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
When starting the vehicle
Always keep your foot on the brake pedal while stopped with the engine
running. This prevents the vehicle from creeping.
When driving the vehicle
Do not drive if you are unfamiliar with the location of the brake and accel-
erator pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal
will result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to a diffi-
culty in operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the
vehicle only slightly. This allows you to depress the brake and acceler-
ator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake
pedal using your left foot may delay response in an emergency, result-
ing in an accident.
Do not drive the vehicle over or stop the vehicle near flammable materi-
als.
The exhaust system and exhaust gases can be extremely hot. These hot
parts may cause a fire if there is any flammable material nearby.

1914-1. Before driving
4
Driving
GS350/250_EE (OM30C36E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
When driving the vehicle
During normal driving, do not turn off the engine. Turning the engine off
while driving will not cause loss of steering or braking control, but the
power assist to these systems will be lost. This 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.
However, in the event of an emergency, such as if it becomes impossible
to stop the vehicle in the normal way: P. 7 3 9
Use engine braking (downshift) to maintain a safe speed when driving
down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. (P. 214)
Do not adjust the positions of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
Always check that all passengers’ arms, heads or other parts of their body
are not outside the vehicle.
When driving on slippery road surfaces
Sudden braking, acceleration and steering may cause tire slippage and
reduce your ability to control the vehicle.
Sudden acceleration, engine braking due to shift changing, or changes in
engine speed could cause the vehicle to skid.
After driving through a puddle, lightly depress the brake pedal to make
sure that the brakes are functioning properly. Wet brake pads may prevent
the brakes from functioning properly. If the brakes on only one side are
wet and not functioning properly, steering control may be affected.