battery LEXUS RX300H 2017 Owners Manual

TABLE OF CONTENTS6
RC300h_EE(OM24740E)
7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior.................460
Cleaning and protecting
the vehicle interior ..................464
7-2. Maintenance
Maintenance
requirements............................. 467
7-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions ................................469
Hood ................................................ 471
Positioning a floor jack............. 472
Engine compartment................ 473
12-volt battery............................... 481
Tires .................................................484
Replacing the tire .......................499
Tire inflation pressure.............. 505
Wheels............................................507
Air conditioning filter............... 509
Electronic key battery .................511
Checking and replacing
fuses ............................................... 514
Light bulbs ...................................... 518
8-1. Essential information
Emergency flashers ................. 528
If your vehicle has
to be stopped
in an emergency ......................529
8-2. Steps to take
in an emergency
If your vehicle needs
to be towed............................... 530
If you think something
is wrong .......................................536
If a warning light turns
on or a warning buzzer
sounds.......................................... 537
If a warning message
is displayed.................................542
If you have a flat tire...................563
If the hybrid system will
not start........................................ 576
If the electronic key does
not operate properly .............578
If the 12-volt battery
is discharged ............................ 582
If your vehicle overheats .........587
If the vehicle becomes
stuck..............................................592
7Maintenance and care8When trouble arises

861-2. Hybrid system
RC300h_EE(OM24740E)
◆When stopped/during start off
The gasoline engine stops* when the vehicle is stopped. During start off, the
electric motor (traction motor) drives the vehicle. At slow speeds or when
traveling down a gentle slope, the engine is stopped* and the electric motor
(traction motor) is used.
When the shift lever is in N, the hybrid battery (traction battery) is not being
charged.
*: When the hybrid battery (traction battery) requires charging or the engine is warm-
ing up, etc., the gaso line engine will not automatically stop.
( P. 87)
◆During normal driving
The gasoline engine is predominantly used. The electric motor (traction
motor) charges the hybrid battery as necessary.
◆When accelerating sharply
When the accelerator pedal is depressed heavily, the power of the hybrid bat-
tery (traction battery) is added to that of the gasoline engine via the electric
motor (traction motor).
◆When braking (regenerative braking)
The wheels operate the electric motor (traction motor) as a power generator,
and the hybrid battery (traction battery) is charged.
■Regenerative braking
In the following situations, kinetic energy is converted to electric energy and decelera-
tion force can be obtained in conjunction with the recharging of the hybrid battery (trac- tion battery).
●The accelerator pedal is released with the shift lever in D or S.
●The brake pedal is depressed with the shift lever in D or S.

871-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
■EV indicator
■Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop automati- cally in the following conditions:
●During gasoline engine warm-up
●During hybrid battery (traction battery) charging
●When the temperature of the hybrid battery (traction battery) is high or low
●When the heater is switched on
■Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction battery), the battery does not
need to be charged from an outside source. However, if the vehicle is left parked for a long time the hybrid battery (traction battery ) will slowly discharge. For this reason, be sure to drive the vehicle at least once every few months for at least 30 minutes or 16 km
(10 miles). If the hybrid battery (traction battery) becomes fully discharged and you are unable to start the hybrid system, contact any authorized Lexus dealer or repairer, oranother duly qualified and equipped professional.
■Charging the 12-volt battery
 P. 584
The EV indicator comes on when the vehicle is
driven using only the electric motor (traction motor) or the gasoline engine is stopped.

881-2. Hybrid system
RC300h_EE(OM24740E)
■After the 12-volt battery has discharged or when the terminal has been removed and installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the hybrid battery
(traction battery). If this continues for a few days, contact any authorized Lexus dealer or repairer, or another duly qua lified and equipped professional.
■Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration ev en though the vehicle is able to move with the “READY” indicator is illuminated. For sa fety, apply the parking brake and make sure to shift the shift lever to P when parked.
The following sounds or vibrations may occu r when the hybrid system is operating and are not a malfunction:
●Motor sounds may be heard from the engine compartment.
●Sounds may be heard from the hybrid batter y (traction battery) under the rear seats when the hybrid system starts or stops.
●Relay operating sounds such as a snap or so ft clank will be emitted from the hybrid bat-
tery (traction battery), under the rear seat s, when the hybrid system is started or stopped.
●Sounds from the hybrid system may be heard when the trunk lid is open.
●Sounds may be heard from the transmission when the gasoline engine starts or stops, when driving at low speeds, or during idling.
●Engine sounds may be heard when accelerating sharply.
●Sounds may be heard due to regenerative braking when the brake pedal is depressed or as the accelerator pedal is released.
●Vibration may be felt when the gasoline engine starts or stops.
●Cooling fan sounds may be heard from the air intake vent on the side of the rear seat back.
■Maintenance, repair, recycling, and disposal
Contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional regarding maintenance, repair, re cycling and disposal. Do not dispose of the
vehicle yourself.
■Customization
Settings (e.g. on/off operation of the EV indicator) can be changed.
(Customizable features P. 607)

891-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
The illustration is an example for explanation and may differ from the actual item.
Hybrid system precautions
Take care when handling the hybrid system, as it is a high voltage system
(about 650 V at maximum) as well as contains parts that become extremely
hot when the hybrid system is operatin g. Obey the warning labels attached to
the vehicle.
Warning label
Power control unit
Electric motor (traction motor)
Hybrid battery (traction battery)
Service plug
High voltage cables (orange)
Air conditioning compressor
1
2
3
4
5
6
7

901-2. Hybrid system
RC300h_EE(OM24740E)
There is an air intake vent on the right
side of the rear seat back for the pur-
pose of cooling the hybrid battery
(traction battery). If the vent becomes
blocked, the hybrid battery may over-
heat, leading to a reduction in hybrid
battery output.
When a certain level of impact is detected by the impact sensor, the emergency
shut off system blocks the high voltage current and stops the fuel pump to mini-
mize the risk of electrocution and fuel leakage. If the emergency shut off system
activates, your vehicle will not restart. To restart the hybrid system, contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
A message is automatically displayed when a malfunction occurs in the hybrid
system or an improper operation is attempted.
If a warning message is shown on the
multi-information display, read the
message and follow the instructions.
( P. 542)
Hybrid battery (traction battery) air intake vent
Emergency shut off system
Hybrid warning message

911-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
■If a warning light comes on, a warning message is displayed, or the 12-volt battery is dis-
connected
The hybrid system may not start. In this case, try to start the system again. If the “READY” indicator does not come on, contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel the
vehicle with at least enough gasoline to make the low fuel level warning light (P. 539) go off. If there is only a small amount of fuel, the hybrid system may not be able to start.(The standard amount of fuel is about 10 L [2.7 gal., 2.2 Imp. gal.] when the vehicle is on a
level surface. This value may vary when the vehi cle is on a slope. Add extra fuel when the vehicle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on hybrid ve hicles incorporate electromagnetic shield- ing, and therefore emit approximately the same amount of electromagnetic waves as conventional gasoline powered vehicles or home electronic appliances.
●Your vehicle may cause sound interference in some third party-produced radio parts.
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a lim ited service life. The lifespan of the hybrid
battery (traction battery) can change in accordance with driving style and driving condi- tions.
■Declaration of conformity
This model conforms to hydrogen emissions according to regulation ECE100 (Battery electric vehicle safety).

931-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death or serious injury:
●Pull your vehicle off the road, apply the parking brake, shift the shift lever to P, and
turn the hybrid system off.
●Do not touch the high voltage parts, cables or connectors.
●If electric wires are exposed inside or ou tside your vehicle, an electric shock may
occur. Never touch exposed electric wires.
●If a fluid leak occurs, do not touch the fluid as it may be strong alkaline electrolyte from the hybrid battery (traction battery). If it comes into contact with your skin or
eyes, wash it off immediately with a large amount of water or, if possible, boric acid solution. Seek immediate medical attention.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never use a
fire extinguisher that is not meant for electric fires. Using even a small amount of water may be dangerous.
●If your vehicle needs to be towed, do so with front wheels raised. If the wheels con-
nected to the electric motor (traction mot or) are on the ground when towing, the motor may continue to generate electricity. This may cause a fire. ( P. 530)
●Carefully inspect the ground under the vehicle. If you find that liquid has leaked onto
the ground, the fuel system may have been damaged. Leave the vehicle as soon as possible.

941-2. Hybrid system
RC300h_EE(OM24740E)
WARNING
■Hybrid battery (traction battery)
●Never resell, hand over or modify the hybrid battery. To prevent accidents, hybrid batteries that have been removed from a disposed vehicle are collected through any
authorized Lexus dealer or repairer, or an other duly qualified and equipped profes- sional. Do not dispose of the battery yourself.
Unless the battery is properly collected, the following may occur, resulting in death
or serious injury:
• The hybrid battery may be illegally dispos ed of or dumped, and it is hazardous to the environment or someone may touch a high voltage part, resulting in an electric
shock. • The hybrid battery is intended to be used exclusively with your hybrid vehicle. If the hybrid battery is used outside of your vehicle or modified in any way, accidents
such as electric shock, heat generation, smoke generation, an explosion and elec- trolyte leakage may occur.When reselling or handing over your vehicle, the possibility of an accident is
extremely high because the person receiving the vehicle may not be aware of these dangers.
●If your vehicle is disposed of without the hybrid battery having been removed, there is
a danger of serious electric shock if high voltage parts, cables and their connectors are touched. In the event that your vehicle must be disposed of, the hybrid batterymust be disposed of by any authorized Lexu s dealer or repairer, or another duly qual-
ified and equipped professional. If the hybrid battery is not disposed of properly, it may cause electric shock that can result in death or serious injury.
NOTICE
■Hybrid battery (traction battery) air intake vent
●Do not place objects that will block the air intake vent. The hybrid battery (traction
battery) may overheat and be damaged.
●Clean the air intake vent regularly to prevent the hybrid battery (traction battery) from overheating.
●Do not get water or foreign materials in the air intake vent as this may cause a shortcircuit and damage the hybrid battery (traction battery).
●Do not carry large amounts of water such as water cooler bottles in the vehicle. If
water spills onto the hybrid battery (tract ion battery), the battery may be damaged. Have the vehicle inspected by any authorized Lexus dealer or repairer, or anotherduly qualified and equipped professional.

1041-3. Theft deterrent system
RC300h_EE(OM24740E)
■Triggering of the alarm
The alarm may be triggered in the following situations: (Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the situation, the door may automatically lock to
prevent improper entry into the vehicle:
●When a person remain ing in the vehicle unlocks the door and the alarm is activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the door.
●When recharging or replacing the 12-volt battery
●The doors or trunk are unlocked using the mechanical key.
●A person inside the vehicle opens a door, thetrunk or hood, or unlocks the vehicle using a
inside lock button.
●The 12-volt battery is recharged or replaced when the vehicle is locked. ( P. 584)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modi fied or removed, the proper operation of the system cannot be guaranteed.