
202
IS300h_EE(OM53D89E)
4-1. Before driving
P. 219
With the brake pedal depressed, shift the shift lever to D. ( P. 226)
Release the parking brake. ( P. 235)
Gradually release the brake pedal and gently depress the accelerator 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. ( P. 226)
With the shift lever in D, depress the brake pedal.
Set the parking brake ( P. 235), and shift the shift lever to P (P. 226).
If parking on a hill, block the wheels as needed.
Press the power switch to stop the hybrid system.
Lock the door, making sure that you have the electronic key on your person.
Make sure that the parking brake is set and shift the shift lever to D.
Gently depress the accelerator pedal.
Release the parking brake.
Driving the vehicle
The following procedures should be observed to ensure safe driving:
Starting the hybrid system
Driving
Stopping
Parking the vehicle
Starting off on a steep uphill
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3
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3
4
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2064-1. Before driving
IS300h_EE(OM53D89E)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■When the vehicle is stopped
●Do not depress the accelerator pedal unnecessarily.If the shift lever is in any position other than P or N, the vehicle may accelerate sud-
denly and unexpectedly, causing an accident.
●In order to prevent accidents due to the ve hicle rolling away, always keep depressing the brake pedal while stopped with the “REA DY” indicator is illuminated, and apply
the parking brake as necessary.
●If the vehicle is stopped on an incline, in order to prevent accidents caused by the vehicle rolling forward or backward, always depress the brake pedal and securely
apply the parking brake as needed.
●Avoid revving or r acing the engine. Running the engine at high speed while the vehicle is stopped may cause the exhaust
system to overheat, which could result in a fire if combustible material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in the vehicle
when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may ca use the plastic lenses and plastic mate-
rial of glasses to deform or crack. • Soft drink cans may fracture, causing the contents to spray over the interior of the
vehicle, and may also cause a short circui t in the vehicle’s electrical components.
●Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a place such as
the glove box or on the floor, it may be lit accidentally when luggage is loaded or the
seat is adjusted, causing a fire.
●Do not attach adhesive discs to the windshield or windows. Do not place containers
such as air fresheners on the instrument panel or dashboard. Adhesive discs or con-
tainers may act as lenses, causing a fire in the vehicle.
●Do not leave a door or window open if th e curved glass is coated with a metallized
film such as a silver-colored one. Reflecte d sunlight may cause the glass to act as a
lens, causing a fire.
●Always apply the parking brake, shift the shift lever to P, stop the hybrid system and
lock the vehicle.
Do not leave the vehicle unattended whil e the “READY” indicator is illuminated. If the vehicle is parked with the shift leve r in P but the parking brake is not set, the
vehicle may start to move, possibly leading to an accident.
●Do not touch the exhaust pipes while the “R EADY” indicator is illuminated or imme-
diately after turning the hybrid system off. Doing so may cause burns.

2224-2. Driving procedures
IS300h_EE(OM53D89E)
■Steering lock
After turning the power switch off and openin g and closing the doors, the steering wheel will be locked due to the steering lock func tion. Operating the power switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the hybrid system is turned on an d off repeatedly in a short period of time. In this case, refrain from operating the hybrid system. After about 10 seconds, the steering
lock motor will resume functioning.
■When “Smart Entry & Start System Malfunction See Owner's Manual” is displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authoriz ed repairer, or any reliable repairer immediately.
■If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after performing the
proper procedures for starting the vehicle, contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.
■If the hybrid system is malfunctioning
P. 585
■If the electronic key battery is depleted
P. 549
■Operation of the power switch
●If the switch is not pressed shortly and firmly, the power switch mode may not change or the hybrid system may not start.
●If attempting to restart the hybrid system immediately after turning the power switch off,
the hybrid system may not start in some cases. After turning the power switch off, please wait a few seconds before restarting the hybrid system.
■If the smart entry & start system has been deactivated by a customized setting
P. 628
“Steering Wheel Lock Pr ess Power Switch while
Turning Wheel” will be displayed on the multi- information display.
Check that the shift lever is in P. Press the power
switch while turning the steering wheel left and right.

2234-2. Driving procedures
4
Driving
IS300h_EE(OM53D89E)
WARNING
■When starting the hybrid system
Always start the hybrid system while sittin g in the driver’s seat. Do not depress the
accelerator pedal while starting the hy brid system under any circumstances.
Doing so may cause an accident resu lting in death or serious injury.
■Caution while driving
If hybrid system failure occu rs 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 circumstance may lead to an accident, resulting in death or serious injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle, press and hold the power switch for more than 2 se conds, or press it briefly 3 times or more
in succession. ( P. 567)
However, do not touch the power switch while driving except in an emergency. Turning the hybrid system off while driving will not cause loss of steering or braking control,
however, power assist to the stee ring will be lost. This will make it more difficult to steer
smoothly, so you should pull over and stop the vehicle as soon as it is safe to do so.
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the power switch in ACCESSORY or ON mode for long periods of time without the hybrid system on.
●If “ACCESSORY” or “IGNITION ON” is di splayed on the meters while the hybrid
system is not operating, the power switch is not off. Exit the vehicle after turning the power switch off.
●Do not stop the hybrid system when the shift lever is in a position other than P. If the
hybrid system is stopped in another shift lever position, the power switch will not be turned off but instead be turned to ACCESSORY mode. If the vehicle is left in
ACCESSORY mode, 12-volt ba ttery discharge may occur.
■When starting the hybrid system
If the hybrid system becomes difficult to st art, have your vehicle checked by any autho-
rized Lexus retailer or Lexus authorized repa irer, or any reliable repairer immediately.
■Symptoms indicating a malfunction with the power switch
If the power switch seems to be operating somewhat differently than usual, such as the
switch sticking slightly, th ere may be a malfunction. Contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer immediately.

2554-4. Refueling
4
Driving
IS300h_EE(OM53D89E)
With the doors unlocked, press the
center of the rear edge of the fuel
filler door.
Push until you hear a click and take your
hand away to slightly open the fuel filler
door. Then open the door fully by hand.
Turn the fuel tank cap slowly to
remove it and put it into the holder
on the fuel filler door.
■If the fuel filler door cannot be opened
Opening the fuel tank cap
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Remove the cover inside the trunk and pull the
lever to open the fuel fille r door if the fuel filler
door cannot be opened by pressing the rear edge of the fuel filler door.

2564-4. Refueling
IS300h_EE(OM53D89E)
After refueling, turn the fuel tank cap
until you hear a click. Once the cap
is released, it will turn slightly in the
opposite direction.
Close the fuel filler door, and press
the center of the rear edge of the
fuel filler door unt il you hear a click.
When you lock the doors, the fuel filler
door will also lock.
■Fuel filler door lock condition
The fuel filler door may not be locked even wh en the vehicle’s doors are locked in the fol- lowing situations:
●When operating the door lock button inside the vehicle
●When the automatic door locking system is operated (P. 148)
●When the fuel filler door is closed after the vehicle’s doors are locked
Closing the fuel tank cap
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WARNING
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle. Doing so may cause a fire or other incident whic h may result in death or serious injury.

4776-2. Using the air conditioning system
6
Interior features
IS300h_EE(OM53D89E)
■Registering air conditioning settings to electronic keys (vehicles with driving position
memory)
●Unlocking the vehicle using an electronic key and turning the power switch to ON mode will recall that ke y’s registered air conditioning settings.
●When the power switch is turned off, the current air conditioning settings will automati-
cally be registered to the electronic key that was used to unlock the vehicle.
●The system may not operate correctly if more than one electronic key is in the vicinity or
if the smart entry & start system is used to unlock a passenger door.
●The doors that can recall the air conditioning setting when unlocked using the smart entry & start system can be changed.* For details, contact any authorized Lexus
retailer or Lexus authorized re pairer, or any reliable repairer.
*: The doors that can recall the driving position memory are changed at the same time.
■Using automatic mode
Fan speed is adjusted automatically accordin g to the temperature setting and the ambi-
ent conditions.
Therefore, the fan may stop for a while until wa rm or cool air is ready to flow immediately
after is pressed or “AUTO” is selected.
■Fogging up of the windows
The windows will easily fog up when the hu midity in the vehicle is high. Turning
(“A/C”) on will dehumidify the air from the outlets and defog the windshield effectively.
●If you turn (“A/C”) off, the windows may fog up more easily.
●The windows may fog up if the recirculated air mode is used.
■Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set the outside/recircu-
lated air mode button to the recirculated ai r mode. This is effective in preventing out- side air from entering the vehicle interi or. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automa tically switch depending on the tempera-
ture setting or the inside temperature.
■Operation of the air conditioni ng system in Eco drive mode
In Eco drive mode, the air conditioning system is controlled as follows to prioritize fuel
efficiency:
●Engine speed and compressor operation controlled to restrict heating/cooling capac-
ity
●Fan speed restricted when automatic mode is selected
To improve air conditioning performanc e, perform the following operations:
●Adjust the fan speed
●Turn off Eco drive mode

4836-3. Using the interior lights
6
Interior features
IS300h_EE(OM53D89E)
■The interior lights and personal lights can be operated when
The interior lights and person al lights can be used regardless of the power switch mode.
However, when the power switch is turned off, they can be used only when the 12-volt battery protection function is not operating.
■12-volt battery protection function
To prevent the 12-volt battery from being discharged, approximately 20 minutes after the power switch is turned off, the power supp lied to the interior lights, personal lights,
and other lights will be cut off au tomatically. (If the interior lights, etc. are left on when the
power switch is turned off, they will be turned off automatically.)
To turn the interior lights, etc. back on , turn the power switch to ACCESSORY or ON
mode or operate the interior light swit ch until the interior lights turn on.
If any of the lights are illumina ted automatically due to the illuminated entry system, the 12-volt battery protection function will be canceled.
■Illuminated entry system
The lights automatically turn on/off according to power switch mode, the presence of the electronic key, whether the doors are locked/unlocked, and whether the doors are
opened/closed.
■Customization
Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: P. 657)
NOTICE
To prevent 12-volt battery discharge, do not leave the lights on longer than necessary when the hybrid system is off.