Page 523 of 600
523
ES300h_OM_OM33B71U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If the 12-volt battery is discharged
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-volt
battery, you can jump start your vehicle by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depe nding on the situa-
tion, the alarm may activate and doors
locked. ( P. 7 9 )
Open the trunk lid and remove the 12-volt battery cover. ( P. 455)
In the event that the trunk opener cannot be used, use the mechanical key to open the
trunk. ( P. 5 2 1 )
Connect the jumper cables according to the following procedure:
The following procedures may be used to start the hybrid system if the 12-volt
battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
1
2
3
Page 525 of 600

5258-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
8
When trouble arises
■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 stopped.
●Turn off any unnecessary electrical components 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 will 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 replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start 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 return to the mode it was in before the 12-volt battery was
discharged. Before disconnecting the 12-volt 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.
Page 559 of 600
ES300h_OM_OM33B71U_(U)
5599-2. Customization
9
Vehicle specifications
■Door lock (P. 108, 521)
FunctionDefault settingCustomized
setting
Allows all doors to be
unlocked by turning the
mechanical key twice in the
driver’ doorOn (Driver’s
door unlocked in one step, all
doors unlocked in two steps)
Off (All doors
unlocked in one
step)——O
All doors are automatically
lockedShifting the shift
lever to position other than P
Off
O—O
Ve h i c l e s p e e d i s approximately
12 mph
(20 km/h) or higher
All doors are automatically
unlockedShifting the shift
lever to POff
O—ODriver’s door is opened
Locking/unlocking of the
trunk when all doors are
locked/unlocked
OnOff——O
123
Page 561 of 600

ES300h_OM_OM33B71U_(U)
5619-2. Customization
9
Vehicle specifications
■Wireless remote control (P. 1 0 8 )
■Driving position memory* ( P. 1 3 0 )
*: If equipped
■Powe r w i n d ow s ( P. 145) and moon roof ( P. 1 4 8 )
FunctionDefault settingCustomized
setting
Wireless remote controlOnOff——O
Allows all doors to be
unlocked by pressing
on the electronic key twice
On (Driver’s
door unlocked in one step, all
doors unlocked in two steps)
Off (All doors
unlocked in one
step)O—O
Trunk unlocking operationPress and hold (short)
One short press
——O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOff——O
123
FunctionDefault settingCustomized
setting
Driver’s seat movement when
exiting the vehicleFullOffO—OPa r t i a l
Selecting the door linking
driving position memory with
door unlock operation
Driver’s doorAll doors——O
123
FunctionDefault settingCustomized setting
Mechanical key linked opera-
tionOffOn——O
Wireless remote control
linked operation (Open only)OffOn——O
Buzzer sounds if operated
using wireless remote controlOnOff——O
123
Page 562 of 600
562
ES300h_OM_OM33B71U_(U)9-2. Customization
■Powe r w i n d ow s (
P. 1 4 5 )
■Moon roof ( P. 1 4 8 )
■Tu r n s i g n a l l e v e r ( P. 1 76 )
FunctionDefault settingCustomized
setting
One-touch closingOnOff——O
123
FunctionDefault settingCustomized setting
Linked operation of compo-
nents when door key is used Slide only Tilt only ——O
Linked operation of compo-
nents when wireless remote
control is used
Slide only Tilt only ——O
Automatic operationOnOff——O
123
FunctionDefault settingCustomized
setting
Time of flashing of the lane
change signal flashers3
Off
——O
4
5
6
7
123
Page 564 of 600
564
ES300h_OM_OM33B71U_(U)9-2. Customization
■Illumination (
P. 3 9 6 )
*: If equipped
FunctionDefault settingCustomized
setting
Interior lights illumination
controlOnOff——O
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
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 person
OnOff——O
Footwell lightingOnOff——O
Outer foot lightsOnOff——O
Time elapsed before the outer
foot lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Enable/disable operation of
the ornament lights (“Ambi-
ent Illumin.”)
*
OnOff—OO
Enable/disable operation of
the outer foot lights when you
approach the vehicle with the
electronic key on your person
OnOff——O
Enable/disable operation of
the outer foot lights when the
doors are unlocked with the
power door lock switch
OnOff——O
123
Page 578 of 600

578What to do if... (Troubleshooting)
ES300h_OM_OM33B71U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( P. 1 0 5 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 0 7 )
●Is the electronic key battery weak or depleted? ( P. 4 7 5 )
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 1 6 7 )
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 1 2 3 )
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 111)
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 1 6 )
If you have a problem, check the following before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside
Page 579 of 600

579What to do if... (Troubleshooting)
ES300h_OM_OM33B71U_(U)
●Did you press the power switch while firmly depressing the brake pedal?
(P. 166)
●Is the shift lever in P? ( P. 1 6 8 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 2 1 )
●Is the steering wheel unlocked? ( P. 1 6 9 )
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 522)
●Is the 12-volt battery discharged? ( P. 5 2 3 )
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 5 2 0 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 6 8 )
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 1 4 5 )
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped
The windows do not open or close by operating the power window
switches