Page 631 of 692
6318-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your ve hicle by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or booster) cables, depending on the situa-
tion, the alarm may activate and doors
locked. (P. 94)
Open the hood ( P. 513) and fuse
box cover.
Remove the clips.
Push the tabs on either side to
detach the lock and lift the lid off
while pulling the lock plate.
If the 12-volt battery is discharged
The following procedures may be used to start the hybrid system if the 12-volt
battery is discharged.
You can also call any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
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2
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Page 633 of 692

6338-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D89E)
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator does not come
on, contact any authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at any authorized
Lexus retailer or Lexus authorized repair er, or any reliable repairer as soon as
possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical componen ts when the vehicle is running at a low
speed for an extended period , such as in heavy traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery w ill discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or repl acing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart entry & start
system when the 12-volt battery is discharged. Use the wireless remote control or the
mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is reconnected, the system will retu rn to the mode it was in before the 12-volt battery was
discharged. Before disconnecting the 12-vol t battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis- charged, be especially careful when reconnecting the 12-volt battery.
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8
9
Page 645 of 692
645
9
9-1. Specifications
Vehicle specifications
IS300h_EE(OM53D89E)
■Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for your vehicle.
This is the primary identification number fo r your Lexus. It is used in register-
ing the ownership of your vehicle.
This number is stamped on the top left of the instrument panel and in the
engine compartment.
This number is also on the manufac-
turer’s label.
■Engine number
The engine number is stamped on
the engine block as shown.
Vehicle identification
Page 659 of 692
659
9
9-2. Customization
Vehicle specifications
IS300h_EE(OM53D89E)
■Door lock ( P. 144, 151, 628)
■Smart entry & start system and wireless remote control (P. 144, 151)
FunctionDefault settingCustomized setting
Unlocking using a mechanical key
All doors
unlocked in one step
Driver’s door unlocked in one step,
all doors unlocked in
two steps
—O
Speed-detecting automatic door lock functionOnOffOO
Shifting gears to position other
than P locks all doorsOffOnOO
Shifting gears to P unlocks all
doorsOffOnOO
Opening driver’s door unlocks all doorsOnOffOO
Locking/unlocking of the trunk
when all doors are locked/
unlocked
OnOff—O
12
FunctionDefault settingCustomized setting
Operation signal (Emergency flashers)OnOffOO
Time elapsed before automatic
door lock function is activated if
door is not opened after being unlocked
30 seconds
60 seconds
—O120 seconds
Open door warning buzzerOnOff—O
Welcome light illumination con-
trolOnOff—O
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Page 660 of 692
6609-2. Customization
IS300h_EE(OM53D89E)
■Smart entry & start system ( P. 144, 151, 157)
*:If equipped
■Wireless remote control (P. 144, 151)
■Driving position memory* (P. 177)
*:If equipped
FunctionDefault settingCustomized setting
Smart entry & start systemOnOffOO
Smart door unlocking*All the doorsDriver’s doorOO
Number of consecutive door lock operations*As many as desired2 times—O
12
FunctionDefault settingCustomized setting
Wireless remote controlOnOff—O
Unlocking operationAll doors unlocked in one
step
Driver’s door
unlocked in one step,
all doors unlocked in two steps
OO
Trunk unlocking operationPress and hold
(short)
One short press
—OPush twice
Press and hold (long)
Off
12
FunctionDefault settingCustomized setting
Driver’s seat movement when
exiting the vehicleStandardOffOOPartial
Doors linked to the driving posi-
tion memory recall functionDriver’s doorAll doors—O
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Page 661 of 692
661
9
9-2. Customization
Vehicle specifications
IS300h_EE(OM53D89E)
■Outside rear view mirrors ( P. 189)
*:If equipped
■Power windows (P. 193)
■Moon roof* (P. 197)
*:If equipped
FunctionDefault settingCustomized setting
Automatic mirror folding and extending operation*
Linked to the
locking/unlock-
ing of the doors
Off
—OLinked to operation of the power switch
12
FunctionDefault settingCustomized setting
Mechanical key linked operationOffOn—O
Wireless remote control linked
operationOffOn—O
Wireless remote control linked
operation signal (buzzer)OnOff—O
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FunctionDefault settingCustomized setting
Mechanical key linked operationOffOn—O
Linked operation of components when mechanical key is used
(open only)
Slide onlyTilt only—O
Wireless remote control linked
operationOffOn—O
Linked operation of components when wireless remote control is
used (open only)
Slide onlyTilt only—O
Wireless remote control linked
operation signal (buzzer)OnOff—O
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Page 664 of 692
6649-2. Customization
IS300h_EE(OM53D89E)
■Illumination ( P. 481)
FunctionDefault settingCustomized setting
Time elapsed before the interior
lights turn off15 seconds
Off
OO7.5 seconds
30 seconds
Operation after the power switch is turned offOnOff—O
Operation when the doors are
unlockedOnOff—O
Operation when you approach
the vehicle with the electronic key on your personOnOff—O
Inside door handle lightsOnOff—O
Time elapsed before the outer
foot lights turn off15 seconds
Off
OO7.5 seconds
30 seconds
Operation of the outer foot lights
when you approach the vehicle
with the electronic key on your person
OnOff—O
Operation of the outer foot lights
when the doors are unlocked with
the power door lock switch
OnOff—O
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Page 665 of 692

665
9
9-2. Customization
Vehicle specifications
IS300h_EE(OM53D89E)
■Vehicle customization
●When the speed-detecting automatic door lock and shift-linked automatic door lock
are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, all the doors will be locked.
• If the vehicle is started with all doors locked, the speed-detecting automatic door
lock will not operate. • If the vehicle is started with any door unlocked, the speed-detecting automatic door
lock will operate.
●When the smart entry & start system is off, the entry unlock function cannot be custom-
ized.
●When the doors remain closed after unlocking the doors and the timer activated auto- matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational signal (Emergency flashers) function set-
tings.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch , the changed setting will not be reflected on the audio system
screen until the power switch is turned off and then to ON mode.
WARNING
■During customization
As the hybrid system needs to be operating during customization, ensure that the vehi-
cle is parked in a place with adequate ventil ation. In a closed area such as a garage, exhaust gases including harmful carbon mo noxide (CO) may collect and enter the
vehicle. This may lead to deat h or a serious health hazard.
NOTICE
■During customization
To prevent 12-volt battery discharge, ensure that the hybrid system is operating while
customizing features.