key Lexus ES300h 2015 Repair Manual

6578-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
8
When trouble arises
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Once
XGasoline vehicles
XHybrid vehicles
The driver’s door
was opened and
closed with the
“START STOP
ENGINE”
<“POWER”> switch
turned off and then
the “START STOP
ENGINE”
<“POWER”> switch
was put in ACCES-
SORY mode twice
without the engine

being started.
Press the
“START
STOP
ENGINE”
<“POWER”>
switch while
depressing
the brake
pedal.
During an engine

starting procedure
in the event that the
electronic key was
not functioning
properly ( →P. 6 7 8 ) ,
the “START STOP
ENGINE”
<“POWER”> switch
was touched with
the electronic key.
Press the
“START
STOP
ENGINE”
<“POWER”>
switch within
10 seconds
of the buzzer
sounding.
Once
The steering lock
could not be
released within 3
seconds of the
“START STOP
ENGINE”
<“POWER”> switch
being pressed.
Press the
“START
STOP
ENGINE”
<“POWER”>
switch while
depressing
the brake
pedal and
moving the
steering
wheel left
and right.
(Flashes)
(Flashes)
(Flashes)

672
ES350_300h_OM_OM33B36U_(U)
8-2. Steps to take in an emergency
If the engine will not start (gasoline vehicles)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(→P. 205)
●There may be a malfunction in the engine immobilizer system.
(→P. 8 4 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 6 8 0 )
●The 12-volt battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key battery depletion or a blown fuse. How-
ever, an interim measure is available to start the engine. ( →P. 673)
If the engine will not start even though correct starting procedures are
being followed ( →P. 205), consider each of the following points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
The starter motor does not turn over

674
ES350_300h_OM_OM33B36U_(U)
8-2. Steps to take in an emergency
If the hybrid system will not start (hybrid vehicles)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (→P. 6 7 8 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 8 6 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. ( →P. 675)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 6 8 4 )
●The 12-volt battery terminal connections may be loose or corroded.
Reasons for the hybrid system not st arting vary depending on the situa-
tion. Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( →P. 212)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

677
ES350_300h_OM_OM33B36U_(U)
8-2. Steps to take in an emergency
8
When trouble arises
If the electronic key does not operate properly
■Doors
Use the mechanical key
(→P. 124) in order to perform the
following operations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 5 seconds
unlocks the other doors.
Opens the windows and moon
roof (turn and hold)
*
*
: This setting must be customized at your Lexus dealer.
If communication between the electronic key and vehicle is inter-
rupted ( →P. 134) or the electronic key cannot be used because the
battery is depleted, the smart access system with push-button start and
wireless remote control cannot be used. In such cases, the doors and
trunk can be opened an d the engine can be started by
following the procedure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
1
2
3
4

6788-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
■Tr u n k
Turn the mechanical key clock-
wise to open.
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of
the electronic key to the “START
STOP ENGINE” <“POWER”>
switch.
The “START STOP ENGINE”
<“POWER”> switch will turn to IGNI-
TION ON mode.
When the smart access system with
push-button start is deactivated in
customization setting, the “START
STOP ENGINE” <“POWER”> switch
will turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the
multi-information display.
Press the “START STOP ENGINE” <“POWER”> switch.
In the event that the engine still cannot be started, contact
your Lexus dealer.
Starting the engine
1
2
3
4

6798-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
8
When trouble arises
■Stopping the engine
Shift the shift lever to P and press the “START STOP ENGINE” <“POWER”> switch
as you normally do when stopping the engine .
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted. (→P. 5 8 4 )
■Changing “START STOP ENGINE” <“POWER”> switch modes
Release the brake pedal and press the “START STOP ENGINE” <“POWER”> switch
in step above.
The engine does not star t and modes will be changed each time the
switch is pressed. ( →P. 206, 213)
■When the electronic key does not work properly
●Make sure that the smart access system with push-button start has not been deac-
tivated in the customization setting. If it is off, turn the function on.
(Customizable features →P. 7 3 0 )
●Check if battery-saving mode is set. If it is set, cancel the function. ( →P. 1 3 3 )
CAUTION
■When using the mechanical key and operating the power windows and moon
roof
Operate the power window or moon roof after checking to make sure that there is
no possibility of any passenger having any of their body parts caught in the window
or moon roof.
Also, do not allow children to operate the mechanical key. It is possible for children
and other passengers to get caught in power window and moon roof.
3

6828-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
■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 elec-
trical appliances. If the vehicle is left for a long time, the 12-volt battery may dis-
charge, and the engine may be unable to start. (The 12-volt battery recharges
automatically during driving.)
■When recharging or replacing the 12-volt battery
●Make sure that the key is not inside the vehicle when recharging or replacing the
12-volt battery. The key may be locked in the vehicle if the alarm is activated.
(→ P. 8 9 )
●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 wire-
less remote control or the mechanical key to lock or unlock the doors.
●The engine 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 “START STOP ENGINE” 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 “START STOP ENGINE” switch off.
If you are unsure what mode the “START STOP ENGINE” switch was in before the
12-volt battery discharged, be especially careful when reconnecting the 12-volt
battery.
CAUTION
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is
not unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to
come into contact with any other parts or metal surfaces in the area, such as
brackets or unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with
each other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the 12-
volt battery.

684
ES350_300h_OM_OM33B36U_(U)
8-2. Steps to take in an emergency
If the 12-volt battery is discharged (hybrid vehicles)
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.Open the trunk lid and remove the 12-volt battery cover.
(→ P. 5 6 2 )
In the event that the trunk opener cannot be used, use the mechanical key to open
the trunk. (→ P. 677)
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

6868-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
■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 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 elec-
trical appliances. If the vehicle is left for a long time, the 12-volt battery may dis-
charge, 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
●Make sure that the key is not inside the vehicle when recharging or replacing the
12-volt battery. The key may be locked in the vehicle if the alarm is activated.
(→ P. 8 9 )
●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 wire-
less 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 bat-
tery 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
discharged, be especially careful when reconnecting the 12-volt battery.

ES350_300h_OM_OM33B36U_(U)
7339-2. Customization
9
Vehicle specifications
*: The default setting varies according to countries.
■Door lock (→P. 144, 677)
“EV driving Indicator”
(hybrid vehicles)“On”“Off”—O—
FunctionDefault settingCustomized
setting123
FunctionDefault settingCustomized setting
“Unlock on Second Key
Tu r n ”
(Allows all doors to be
unlocked by turning the
mechanical key twice in the
driver’ door)On (Driver’s
door unlocked in one step, all
doors unlocked in two steps)
Off (All doors
unlocked in one step)
——O
“Auto Lock by Speed”
(All doors are automatically
locked when vehicle speed
is approximately 12 mph [20
km/h] or higher)
OffOnO—O
“Auto Lock by Shift from P”
(All doors are automatically
locked when shifting the shift
lever to position other than
P)
OnOffO—O
“Auto Unlock by Shift to P”
(All doors are automatically
unlocked when shifting the
shift lever to P)
OnOffO—O
123