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1483-4. Adjusting the steering wheel and mirrors
IS350 AWD/IS350/IS300  AWD/IS300_U(OM53E34U)
To sound the horn, press on or close to
the  mark.
■The steering wheel can be adjusted when (power type)
The engine switch is in ACCESSORY or IGNITION ON mode
*.
*: If the driver’s seat belt is fastened, the steering wheel can be adjusted regardless of
engine switch mode.
■Automatic adjustment of the steering position (if equipped)
A desired steering position ca n be entered to memory and recalled automatically by the
driving position memory system. (→ P. 139)
■Power easy access system (if equipped)
The steering wheel and driver’s seat move in  accordance with engine switch mode and
the driver’s seat belt condition. ( →P. 139)
Horn
WARNING
■Caution while driving
Do not adjust the steeri ng wheel while driving.
Doing so may cause the driver  to mishandle the vehicle and cause an accident, result-
ing in death or serious injury.
■After adjusting the steering wheel (manual type)
Make sure that the steering  wheel is securely locked. 
Otherwise, the steering wheel may move su ddenly, possibly causing an accident, and
resulting in death or serious injury. Also, th e horn may not sound if the steering wheel is
not securely locked. 
         
        
        
     
        
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1503-4. Adjusting the steering wheel and mirrors
IS350 AWD/IS350/IS300  AWD/IS300_U(OM53E34U)
■To prevent sensor error
To ensure that the sensors operate properly, do
not touch or cover them. 
WARNING
Do not adjust the position of the mirror while driving.
Doing so may lead to mishandling of the vehi cle and cause an accident, resulting in death
or serious injury. 
         
        
        
     
        
        Page 153 of 656
1533-4. Adjusting the steering wheel and mirrors
3
Operation of each component
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
WARNING
■Important points while driving
Observe the following precautions while driving.
Failure to do so may result in loss of control of the vehicle and cause an accident, result-
ing in death or serious injury.
●Do not adjust the mirrors while driving.
●Do not drive with the mirrors folded.
●Both the driver and passenger side mirrors must be extended and properly adjusted
before driving.
■When the mirror defoggers are operating
Do not touch the rear view mirror surfaces, as they can become very hot and burn you. 
         
        
        
     
        
        Page 156 of 656
1563-5. Opening, closing the windows and moon roof
IS350 AWD/IS350/IS300  AWD/IS300_U(OM53E34U)
■Door lock linked window operation
●The power windows can be opened an d closed using the mechanical key.*(→ P. 569)
●The power windows can be opened using the wireless remote control.* (→ P. 116)
*: These settings must be cust omized at your Lexus dealer.
■When the battery is disconnected
The window lock switch is disabled. If nece ssary, 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 instru-
ment 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. 611) 
         
        
        
     
        
        Page 157 of 656

1573-5. Opening, closing the windows and moon roof
3
Operation of each component
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
WARNING
Observe the following precautions. 
Failure to do so may result in death or serious injury.
■Closing the windows
●The driver is responsible for all the power window operations, including the operation
for the passengers. In order to prevent acci dental operation, especially by a child, do
not let a child operate the power windows. It  is possible for children and other passen-
gers to have body parts caught in the powe r window. Also, when riding with a child, it
is recommended to use the window lock switch. ( →P. 154)
●Check to make sure that all passengers do not have any part  of their body in a posi-
tion where it could be caught wh en a window is being operated.
●When exiting the vehicle, turn the engine sw itch off, carry the key and exit the vehicle
along with the child. There may be accidental operation, due to mischief, etc., that
may possibly lead to an accident.
■Jam protection function
●Never use any part of your body to intentionally activate the jam protection function.
●The jam protection function may not work if  something gets jammed just before the
window is fully closed. Be careful not to get any part of your body jammed in the win-
dow.
■Catch protection function
●Never use any part of your body or clothing to intentionally activate the catch protec-
tion function.
●The catch protection function may not work  if something gets caught just before the
window is fully opened. Be ca reful not to get any part of your body or clothing caught
in the window. 
         
        
        
     
        
        Page 161 of 656

1613-5. Opening, closing the windows and moon roof
3
Operation of each component
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Moon roof open warning buzzer
The buzzer sounds and a message is shown on  the multi-information display in the instru-
ment 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. 611)
WARNING
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 vehicle while it is
moving.
●Do not sit on top of the moon roof.
■Closing the moon roof
●The driver is responsible for moon  roof opening and closing operations. 
In order to prevent accidental operation, especially by a child, do not let a child oper-
ate the moon roof. It is possible for child ren and other passengers to have body parts
caught in the moon roof.
●Check to make sure that all passengers do not have any part  of their body in a posi-
tion where it could be caught when  the moon roof is being operated. 
●When exiting the vehicle, turn the engine sw itch off, carry the key and exit the vehicle
along with the child. There may be accidental operation, due to mischief, etc., that
may possibly lead to an accident.
■Jam protection function
●Never use any part of your body to intentionally activate the jam protection function.
●The jam protection function may not work if something gets caught just before the
moon roof fully closes. 
         
        
        
     
        
        Page 165 of 656

1654-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■When starting off on an uphill
The hill-start assist control will activate. ( →P. 292)
■Driving in the rain
●Drive carefully when it is ra ining, because visibility will be reduced, the windows may
become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, beca use the road surface will be especially slip-
pery.
●Refrain from high speeds when driving on an expressway in the rain, because there may
be a layer of water between the tires and th e road surface, preventing the steering and
brakes from operating properly.
■Engine speed while driving
In the following conditions, th e engine speed may become high while driving. This is due
to automatic up-shifting control or down-shi fting implementation to meet driving condi-
tions. It does not indica te sudden acceleration.
●The vehicle is judged to be driving uphill or downhill
●When the accelerator pedal is released
●When the brake pedal is depressed while sport mode is selected
■Restraining the engine output  (Brake Override System)
●When the accelerator and brake pedals are depressed at the same time, the engine
output may be restrained.
●A warning message is displayed on the mult i-information display while the system is
operating. ( →P. 544)
■Restraining sudden start  (Drive-Start Control)
●When the following unusual operation is  performed, the engine output may be
restrained.
• When the shift lever is shifted from R to D, D to R, N to R, P to D, or P to R (D
includes M) with the accelerator pedal depressed, a warning message appears on
the multi-information display. ( →P. 534)
• When the accelerator pedal is depressed t oo much while the vehicle is in reverse.
●While Drive-Start Control is being activated, your vehicle may have trouble escaping
from the mud or fresh snow. In such case, deactivate TRAC ( →P. 294) to cancel Drive-
Start Control so that the vehicle may beco me able to escape from the mud or fresh
snow. 
         
        
        
     
        
        Page 167 of 656

1674-1. Before driving
4
Driving
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
WARNING
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 accelerator ped-
als 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 difficulty in oper-
ating the pedals. Make sure to  operate the pedals properly.
• Make sure to keep a correct driving po sture even when moving the vehicle only
slightly. This allows you to depress th e brake and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay re sponse in an emergency, resulting in an accident.
●Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot parts may
cause a fire if there is any flammable material nearby.
●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. 513
●Use engine braking (downshift) to maintain  a safe speed when driving down a steep
hill. 
Using the brakes continuously may cause th e brakes to overheat and lose effective-
ness. ( →P. 183)
●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.
●Do not drive across a river or th rough other bodies of water. 
This may cause electric/elect ronic components to short circuit, damage the engine or
cause other serious damage to the vehicle.
●Do not drive in excess of the speed limit. Even  if the legal speed limit permits it, do not
drive over 85 mph (140 km/h) unless your  vehicle has high-speed capability tires.
Driving over 85 mph (140 km/h ) may result in tire failure, loss of control and possible
injury. Be sure to consult a tire dealer to determine whether the tires on your vehicle
are high-speed capability tires or no t before driving at such speeds.