key Lexus ES300h 2015 Workshop Manual

ES350_300h_OM_OM33B36U_(U)
5597-3. Do-it-yourself maintenance
7
Maintenance and care
■After recharging/reconnecting the 12-volt battery
The engine may not start. Follow the procedure below to initialize the system.Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
●Unlocking the doors using the smart access system with push-button start may not
be possible immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the doors.
●Start the engine with the “START STOP ENGINE” switch in ACCESSORY mode.
The engine may not start with the “START STOP ENGINE” switch turned off. How-
ever, the engine will operate normally from the second attempt.
●The “START STOP ENGINE” switch mode is recorded by the vehicle. If the 12-volt
battery is reconnected, the vehicle will return the “START STOP ENGINE” switch
mode to the status it was in before the 12-volt battery was disconnected. Make sure
to turn off the engine before disconnect the 12-volt battery. Take extra care when
connecting the 12-volt battery if the “START STOP ENGINE” switch mode prior to
discharge is unknown.
If the engine will not start even after multiple attempts, contact your Lexus dealer.
CAUTION
■Chemicals in the 12-volt battery
Batteries contain poisonous and corrosive sulfuric acid and may produce hydro-
gen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near the 12-volt battery:
●Do not cause sparks by touching the 12-volt battery terminals with tools.
●Do not smoke or light a match near the 12-volt battery.
●Avoid contact with eyes, skin and clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the 12-volt battery.
●Keep children away from the 12-volt battery.
1
2
3

ES350_300h_OM_OM33B36U_(U)
5637-3. Do-it-yourself maintenance
7
Maintenance and care
Make sure that the 12-volt battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.Terminals
Hold-down clamp
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect
the ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●The hybrid system may not start. Follow the procedure below to initialize the system.Shift the shift lever to P.
Open and close any of the doors.
Restart the hybrid system.
●Unlocking the doors using the smart access system with push-button start may not
be possible immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the “POWER” switch in ACCESSORY mode. The
hybrid system may not start with the “POWER” switch turned off. However, the
hybrid system will operate normally from the second attempt.
●The “POWER” switch mode is recorded by the vehicle. If the 12-volt battery is recon-
nected, the vehicle will return the “POWER” switch mode to the status it was in
before the 12-volt battery was disconnected. Make sure to turn off the “POWER”
switch before disconnect the 12-volt battery. Take extra care when connecting the 12-
volt battery if the “POWER” switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts at all methods above, contact
your Lexus dealer.
Exterior
1
2
1
2
3

584
ES350_300h_OM_OM33B36U_(U)
7-3. Do-it-yourself maintenance
Electronic key battery
●Flathead screwdriver
●Small flathead screwdriver
●Lithium battery CR2032
Take out the mechanical key.
Remove the cover.
To prevent damage to the key, cover
the tip of the screwdriver with a rag.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
3

ES350_300h_OM_OM33B36U_(U)
5857-3. Do-it-yourself maintenance
7
Maintenance and care
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance shops
or camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep
away from children. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.

613
ES350_300h_OM_OM33B36U_(U)
8When trouble arises
8-1. Essential informationEmergency flashers.................... 614
If your vehicle has to be stopped in an emergency ..... 615 8-2. Steps to take in an emergency
If your vehicle needs to be towed .................................. 617
If you think something is wrong ................ 624
Fuel pump shut off system (gasoline vehicles) .................. 625
If a warning light turns on or a warning buzzer sounds ..... 626
If a warning message is displayed ................................ 636
If you have a flat tire................... 659
If the engine will not start (gasoline vehicles) ...................672
If the hybrid system will not start (hybrid vehicles) ............. 674
If the shift lever cannot be shifted from P ...................... 676
If the electronic key does not operate properly ......................677
If the 12-volt battery is discharged (gasoline
vehicles) ..................................... 680
If the 12-volt battery is discharged (hybrid
vehicles) ......................................684
If your vehicle overheats (gasoline vehicles) ................. 688
If your vehicle overheats (hybrid vehicles) ....................... 691
If the vehicle becomes stuck ..............................................697

6528-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
After taking the specified steps to correct the suspected problem, check
that the warning message and light go off.
Have the malfunction repaired immediately.
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Once
The electronic key
is not detected
when an attempt is
made to start the
engine tem>.Start the
engine
system>
with the
electronic
key present.
Once3
times
The electronic key
was carried out-
side the vehicle and
a door other than
the driver’s door
was opened and
closed while the
“START STOP
ENGINE”
<“POWER”> switch
was in a mode
other than off.
Bring the
electronic
key back
into the
vehicle.
The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was in
P and the “START
STOP ENGINE”
<“POWER”> switch
was not turned off.Tu r n t h e
“START
STOP
ENGINE”
<“POWER”>
switch off or
bring the
electronic
key back
into the
vehicle.
(Flashes)
(Flashes)

6538-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
8
When trouble arises
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
OnceCon-
tinuous
An attempt was
made to exit the
vehicle with the
electronic key and
lock the doors with-
out first turning the
“START STOP
ENGINE”
<“POWER”> switch
off when the shift
lever was in P.
Tu r n t h e
“START
STOP
ENGINE”
<“POWER”>
switch off
and lock the
doors again.
9
times
An attempt was
made to drive when
the regular key was
not inside the vehi-
cle.Confirm
that the
electronic
key is inside
the vehicle.
Con-
tinuous
The driver’s door
was opened when
the shift lever was
not in P and the
“START STOP
ENGINE”
<“POWER”> switch
was not turned off.
Shift the
shift lever to
P.
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)

6548-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Con-
tinuousCon-
tinuous
The driver’s door
was opened and
closed while the
electronic key was
not in the vehicle,
the shift lever was
not in P and the
“START STOP
ENGINE”
<“POWER”> switch
was not turned off.
•Shift the shift lever
to P.
•Bring the elec-
tronic key
back into
the vehi-
cle.
Con-
tinuous
An attempt was
made to lock the
doors using the
smart access sys-
tem with push-but-
ton start while the
electronic key was
still inside the vehi-
cle.
Retrieve the
electronic
key from the
vehicle and
lock the
doors again.
OnceCon-
tinuous
An attempt was
made to lock either
front door by open-
ing a door and put-
ting the inside lock
button into the lock
position, then clos-
ing the door with
the electronic key
still inside the vehi-
cle.
Retrieve the
electronic
key from the
vehicle and
lock the
doors again.
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)

6558-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
8
When trouble arises
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure
Once
XGasoline vehicles
XHybrid vehicles
• When the doors were unlocked
with the mechan-
ical key and then
the “START
STOP ENGINE”
<“POWER”>
switch was
pressed, the
electronic key
could not be
detected in the
vehicle.
•The electronic key could not be
detected in the
vehicle even after
the “START
STOP ENGINE”
<“POWER”>
switch was
pressed two con-
secutive times.
To u c h t h e
electronic
key to the
“START
STOP
ENGINE”
<“POWER”>
switch while
depressing
the brake
pedal.
Once
XGasoline vehicles
XHybrid vehicles
An attempt was
made to start the
engine tem> with the shift
lever in an incorrect
position.Shift the
shift lever to
P and start
the engine
tem>.
(Flashes)
(Flashes)
(Flashes)
(Flashes)

6568-2. Steps to take in an emergency
ES350_300h_OM_OM33B36U_(U)
InteriorbuzzerExterior
buzzerWarning messageDetailsCorrection procedure

Po we r w a s t u r n e d
off due to the auto-
matic power off
function.
Next time
when start-
ing the
engine
tem>,
increase the
engine
speed
slightly and
maintain
that level for
approxi-
mately 5
minutes to
recharge
the 12-volt
battery.
OnceThe electronic key
has a low battery.
Replace the
electronic
key battery.
( → P. 5 8 4 )