key battery Lexus ES300h 2014 User Guide

ES350_300h_OM_OM33A60U_(U)
2054-2. Driving procedures
4
Driving
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if
the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine. After about 10 seconds, the steering lock motor
will resume functioning.
■When “Check Access System with Elec. Key” is displayed on the multi-information
display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the electronic key battery is depleted
→P. 7 1 9
■Operation of the “START STOP ENGINE” switch
●When operating the “START STOP ENGINE” switch, one short, firm press is
enough. If the switch is pressed improperly, the engine may not start or the “START
STOP ENGINE” switch mode may not change. It is not necessary to press and
hold the switch.
●If attempting to restart the engine immediately after turning the “START STOP
ENGINE” switch off, the engine may not start in some cases. After turning the
“START STOP ENGINE” switch off, please wait a few seconds before restarting
the engine.
■If the smart access system with push-button start has been deactivated in a cus-
tomized setting
→P. 8 1 0
■Odometer and trip meter display
When the “START STOP ENGINE” switch is turned off, the odometer or trip meter
display will extinguish after approximately 30 seconds. “Steering Lock active” will be displayed on
the multi-information display.
Check that the shift lever is set in P. Press the
“START STOP ENGINE” switch while turning
the steering wheel left and right.

ES350_300h_OM_OM33A60U_(U)
2114-2. Driving procedures
4
Driving
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON mode
(the hybrid system is not operating) for more than an hour with the shift lever in P, the
“POWER” switch will automatically turn off. However, this function cannot entirely
prevent 12-volt battery discharge. Do not leave the vehicle with the “POWER”
switch in ACCESSORY or ON mode for long periods of time when the hybrid sys-
tem is not operating.
■Sounds and vibrations specific to a hybrid vehicles
→ P. 7 5
■Electronic key battery depletion
→P. 1 3 6
■When the ambient temperature is low, such as during winter driving conditions
It may take time until the “READY” indicator comes on.
■Conditions affecting operation
→P. 1 3 2
■Notes for the entry function
→P. 1 3 3
■If the hybrid system does not start
●The immobilizer system may not have been deactivated. (→ P. 8 4 )
Contact your Lexus dealer.
●Check that the shift lever is securely set in P. The hybrid system may not start if the
shift lever is displaced out of P. “Shift to P position when starting” will be displayed
on the multi-information display.
■Steering lock
After turning the “POWER” switch off and opening and closing the doors, the steer-
ing wheel will be locked due to the steering lock function. Operating the “POWER”
switch again automatically cancels the steering lock.

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ES350_300h_OM_OM33A60U_(U)
4-2. Driving procedures
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if
the hybrid system is turned on and 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 “Check Access System with Elec. Key” is displayed on the multi-information
display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the “POWER” switch
with the shift lever in P and the brake pedal depressed, contact your Lexus dealer
immediately.
■If the hybrid system is malfunctioning
→P. 7 7 0
■If the electronic key battery is depleted
→P. 7 1 9
■Operation of the “POWER” switch
●When operating the “POWER” switch, one short, firm press is enough. If the switch
is pressed improperly, the hybrid system may not start or the “POWER” switch
mode may not change. It is not necessary to press and hold the switch.
●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 sys-
tem.
■If the smart access system with push-button start has been deactivated in a cus-
tomized setting
→P. 8 1 0
“Steering Lock active” will be displayed on
the multi-information display.
Check that the shift lever is set in P. Press the
“POWER” switch while turning the steering
wheel left and right.

ES350_300h_OM_OM33A60U_(U)
6135-5. Using the interior lights
5
Interior features
■Illuminated entry system
The lights automatically turn on/off according to “START STOP ENGINE”
<“POWER”> switch mode, the presence of the electronic key, whether the doors are
locked/unlocked, and whether the doors are opened/closed.
■To prevent 12-volt battery discharge
If the following lights remain on when the “START STOP ENGINE” <“POWER”>
switch is turned off the lights will go off automatically after 20 minutes:
●Outer foot lights
●Personal/interior light
●Door courtesy lights
●Ornament lights (if equipped)
●Footwell lights
■Customization
Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: →P. 8 6 2 )

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ES350_300h_OM_OM33A60U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior.................658
Cleaning and protecting the vehicle interior .................. 662
6-2. Maintenance Maintenance requirements............................. 665
General maintenance ..............668
Emission inspection and maintenance (I/M)
programs .....................................672
6-3. Do-it-yourself maintenance Do-it-yourself service precautions.................................673
Hood ................................................677
Positioning a floor jack ............. 678
Engine compartment ................ 681
12-volt battery (hybrid vehicles) ......................698
Tires.................................................. 702
Tire inflation pressure .................712
Wheels .............................................715
Air conditioning filter ................. 717
Electronic key battery ................719
Checking and replacing fuses................................................ 721
Light bulbs..................................... 733

ES350_300h_OM_OM33A60U_(U)
6596-1. Maintenance and care
6
Maintenance and care
■Notes for a smart access system with push-button start
If the door handle becomes wet while the electronic key is within the effective range,
the door may lock and unlock repeatedly. In that case, follow the following correc-
tion procedures to wash the vehicle:
●Place the key in a position 6 ft. (2 m) or more separate from the vehicle while the
vehicle is being washed. (Take care to ensure that the key is not stolen.)
●Set the electronic key to battery-saving mode to disable the smart access system
with push-button start. (→P. 131)
■Aluminum wheels
●Remove any dirt immediately by using a neutral detergent. Do not use hard
brushes or abrasive cleaners. Do not use strong or harsh chemical cleaners.
Use the same mild detergent and wax as used on the paint.
●Do not use detergent on the wheels when th ey are hot, for example after driving for
long distance in the hot weather.
●Wash detergent from the wheels immediately after use.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.

ES350_300h_OM_OM33A60U_(U)
6956-3. Do-it-yourself maintenance
6
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.
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ES350_300h_OM_OM33A60U_(U)
6996-3. Do-it-yourself maintenance
6
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
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719
ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
6
Maintenance and care
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
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ES350_300h_OM_OM33A60U_(U)
6-3. Do-it-yourself maintenance
■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.