12-volt Lexus ES300h 2015 Do-it-yourself maintenance / (OM33B99U) User Guide

ES350_300h_OM_OM33B99U_(U)
1793-5. Opening, closing the windows and moon roof
3
Operation of each component
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key.*
( P. 6 7 7 )
●The power windows can be opened using the wireless remote control.* ( P. 141)
*: These settings must be cust omized at your Lexus dealer.
■When the 12-volt battery is disconnected
The window lock switch is disabled. If nece ssary, press the window lock switch after
reconnecting the battery.
■Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the
instrument cluster when the “START STOP ENGINE” <“POWER”> switch is turned
off and the driver’s door is opened with the power windows open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 7 3 0 )

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4-2. Driving procedures
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION
ON mode (the engine is not running) for more than an hour with the shift lever in P,
the “START STOP ENGINE” switch will automatically turn off. However, this func-
tion cannot entirely prevent 12-volt batter y discharge. Do not leave the vehicle with
the “START STOP ENGINE” switch in ACCESSORY or IGNITION ON mode for
long periods of time when the engine is not running.
■Electronic key battery depletion
P. 1 3 8
■Conditions affecting operation
P. 1 3 4
■Notes for the entry function
P. 1 3 5
■If the engine does not start
●The engine 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 engine may not start if the shift
lever is displaced out of P. “Shift to P position to Start” will be displayed on the multi-
information display.
■Steering lock
After turning the “START STOP ENGINE” switch off and opening and closing the
doors, the steering wheel will be locked due to the steering lock function. Operating
the “START STOP ENGINE” switch again automatically cancels the steering lock.

ES350_300h_OM_OM33B99U_(U)
2114-2. Driving procedures
4
Driving
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the “START STOP ENGINE” switch in ACCESSORY or IGNI-
TION ON mode for long periods of time without the engine running.
●If “POWER ON” is displayed on the multi-information display, the “START STOP
ENGINE” switch is not off. Exit the vehicle after turning the “START STOP
ENGINE” switch off.
●Do not stop the engine when the shift lever is in a position other than P. If the
engine is stopped in another shift lever position, the “START STOP ENGINE”
switch will not be turned off but instea d be turned to ACCESSORY mode. If the
vehicle is left in ACCESSORY mode, 12-volt battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have your vehicle
checked by your Lexus dealer immediately.
■Symptoms indicating a malfunction with the “START STOP ENGINE” switch
If the “START STOP ENGINE” switch seem s to be operating somewhat differently
than usual, such as the switch sticking slightly, there may be a malfunction. Contact
your Lexus dealer immediately.

ES350_300h_OM_OM33B99U_(U)
2154-2. 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. 76
■Electronic key battery depletion
P. 1 3 8
■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 4
■Notes for the entry function
P. 1 3 5
■If the hybrid system does not start
●The immobilizer system may not have been deactivated. ( P. 8 6 )
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 stee ring lock function. Operating the “POWER”
switch again automatically cancels the steering lock.

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ES350_300h_OM_OM33B99U_(U)
4-2. Driving procedures
NOTICE
■To prevent 12-volt battery discharge
●Do not leave the “POWER” switch in ACCESSORY or ON mode for long peri-
ods of time without the hybrid system on.
●If “POWER ON” is displayed on the multi-information display, the “POWER”
switch is not off. Exit the vehicle after turning the “POWER” switch off.
●Do not stop the hybrid system when the shift lever is in a position other than P. If
the hybrid system is stopped in another shift lever position, the “POWER” switch
will not be turned off but instead be turned to ACCESSORY mode. If the vehicle
is left in ACCESSORY mode, 12-volt battery discharge may occur.
■When starting the hybrid system
●Do not depress the accelerator pedal unnecessarily.
●If the hybrid system becomes difficult to start, have your vehicle checked by your
Lexus dealer immediately.
■Symptoms indicating a malfunction with the “POWER” switch
If the “POWER” switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction. Contact your Lexus
dealer immediately.

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4-3. Operating the lights and wipers
■Light reminder buzzer
A buzzer sounds when the “START STOP ENGINE” <“POWER”> switch is turned
off or turned to ACCESSORY mode and the driver’s door is opened while the lights
are turned on.
■Automatic headlight leveling system (if equipped)
The level of the headlights is automatically adjusted according to the number of pas-
sengers and the loading condition of the vehicle to ensure that the headlights do not
interfere with other road users.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 7 3 0 )
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the engine is not running
.

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ES350_300h_OM_OM33B99U_(U)
4-5. Using the driving support systems
The guide lines are very far out of alignment
The camera position is out of alignment.Have the vehicle inspected by your
Lexus dealer.
• The vehicle is tilted (there is a heavy
load on the vehicle, tire pressure is
low due to a tire puncture, etc.)
• The vehicle is used on an incline.If this happens due to these causes, it
does not indicate a malfunction.
Back up while visually checking the
vehicle’s surroundings.
 The estimated course lines move even though the steering wheel is straight
There is a malfunction in the signals
being output by the steering sensor.Have the vehicle inspected by your
Lexus dealer.
Guide lines are not displayed
The trunk is open.
Close the trunk.
If this does not resolve the symptom,
have the vehicle inspected by your
Lexus dealer.
The estimated course lines are not displayed
• 12-volt battery power is low.
• The steering sensor has been rein-
stalled.
• There is a malfunction in the signals being output by the steering sensor.Stop the vehicle, and turn the steering
wheel as far as it will go to the left and
right.
If this does not resolve the symptom,
have the vehicle inspected by your
Lexus dealer.
Likely causeSolution

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ES350_300h_OM_OM33B99U_(U)
4-5. Using the driving support systems
■When the message is displayed on the multi-information display showing that
TRAC has been disabled even if the VSC OFF switch has not been pressed
TRAC and hill-start assist control (hybri d vehicles) cannot be operated. Contact
your Lexus dealer.
■When the 12-volt battery is disconnected
The steering wheel may move from its straight forward position, but this will be cor-
rected automatically when driving.
■Sounds and vibrations caused by the ABS, brake assist, VSC and TRAC systems
●A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine is started or just after the
vehicle begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
●Any of the following conditions may occur when the above systems are operating.
None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated (gasoline vehi- cles).
• The brake pedal may move down slightly after the ABS is activated (gasoline
vehicles).
■EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
■Automatic reactivation of TRAC and VSC systems
After turing the TRAC and VSC systems off, the systems will be automatically re-
enabled in the following situations:
●When the “START STOP ENGINE” <“POWER”> switch is turned off
●If only the TRAC system is turned off, the TRAC will turn on when vehicle speed
increases.
If both the TRAC and VSC systems are turned off, automatic re-enabling will not
occur when vehicle speed increases.

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ES350_300h_OM_OM33B99U_(U)
4-6. Driving tips
4
Driving
Winter driving tips
●Use fluids that are appropriate to the prevailing outside temperatures. • Engine oil
• Engine coolant
• Power control unit coolant (hybrid vehicles)
• Washer fluid
●Have a service technician inspect th e condition of the 12-volt battery.
●Have the vehicle fitted with four sno w tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the specified size and brand, and that chains match the
size of the tires.
Carry out the necessary preparati ons and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropriate
to the prevailing weather conditions.
Preparation for winter

3565-1. Basic Operations
ES350_300h_OM_OM33B99U_(U)
CAUTION
■Using the Lexus Display Audio controller
Be careful when touching the Lexus Display Audio controller in extreme tempera-
tures as it may become very hot or cold due to the temperature inside the vehicle.
■Laser product
●CAUTION
USE OF CONTROL OR ADJUSTMENT OR PERFORMANCE OF PROCE-
DURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZ-
ARDOUS RADIATION EXPOSURE.
●CAUTION
THE USE OF OPTICAL INSTRUMENTS WITH THIS PRODUCT WILL
INCREASE EYE HAZARD.
NOTICE
■To prevent Lexus Display Audio controller malfunction
●Do not allow the Lexus Display Audio controller to come into contact with food,
liquid, stickers or lit cigarettes as doing so may cause it to change color, emit a
strange odor or stop functioning.
●Do not subject the Lexus Display Audio controller to excessive pressure or
strong impact as the controller may bend or break off.
■To prevent 12-volt battery discharge
Do not leave the audio system on longer than necessary when the hybrid system is
off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids on the audio system.