2015 Lexus IS300h hybrid system

861-2. Hybrid system
IS300h_EE(OM53D56E)
CAUTION
■High voltage precautions
This vehicle has high voltage DC and AC systems as well as a 12-volt system. DC and
AC high voltage is very dangerous and can cause severe burns and electric shock that
may result in death or serious injury.
●Never touch, disassemble, remove or replace the high voltage parts, cables or their
connectors.
●The hybrid system will become hot after starting as the system uses high voltage. Be
careful of both the high voltage and the high temperature, and always obey the cau-
tion labels attached to the vehicle.
●Never try to open the service plug access
hole located under the luggage under tray.
The service plug is used only when the vehicle
is serviced and is subject to high voltage.

871-2. Hybrid system
1
For safety and security
IS300h_EE(OM53D56E)
CAUTION
■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 and connectors.
●If electric wires are exposed inside or outside 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 rear wheels raised. If the wheels con-
nected to the electric motor (traction motor) are on the ground when towing, the
motor may continue to generate electricity. This may cause an electricity leakage
leading to a fire. ( →P. 5 1 4 )
●Carefully inspect the ground under the vehicl e. If you find that liquid has leaked onto
the ground, the fuel system may have been damaged. Leave the vehicle as soon as
possible.

881-2. Hybrid system
IS300h_EE(OM53D56E)
CAUTION
■Hybrid battery (traction battery)
●Your vehicle contains a sealed nickel-metal hydride 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 another duly qualified and equipped professional. 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 di sposed of or dumped, and someone may
touch a high voltage part, resu lting 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 vehi cle, 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 battery
must be disposed of by any authorized Lexus 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 re sult in death or serious injury.

891-2. Hybrid system
1
For safety and security
IS300h_EE(OM53D56E)
NOTICE
■Hybrid battery air vent
●Do not put foreign objects near the air vent. The hybrid battery (traction battery) may
overheat and be damaged.
●Clean the air vent regularly to prevent the hybrid battery (traction battery) from over-
heating.
●Do not wet or allow foreign substances to enter the air vent as this may cause a short
circuit 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 (traction battery), the battery may be damaged.
Have the vehicle inspected by any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.

90
IS300h_EE(OM53D56E)1-3. Theft deterrent system
The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the power switch has been turned to
ACCESSORY or ON mode to indi-
cate that the system has been canceled.
■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is
in contact with a metallic object
●If the key is in close proximity to or touching a key registered to the security system (key
with a built-in transponder chip) of another vehicle
Immobilizer system
The vehicle’s keys have built-in transp onder chips that prevent the hybrid sys-
tem from starting if a key has not been previously registered in the vehicle’s
on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prev ent vehicle theft but does not guarantee
absolute security against all vehicle thefts.

971-3. Theft deterrent system
1
For safety and security
IS300h_EE(OM53D56E)
Do one of the following to deactivate or stop the alarm:
●Unlock the doors or open the trunk using the entry function or wireless
remote control.
●Start the hybrid system. (The alarm will be deactivated or stopped after a few
seconds.)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
Deactivating or stopping the alarm

1052. Instrument cluster
2
Instrument cluster
IS300h_EE(OM53D56E)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
*1: These lights turn on when the power switch is turned to ON mode to indicate that asystem check is being performed. They will turn off after the hybrid system is on, or
after a few seconds. There may be a malfunction in a system if the light does not come
on, or turn off. Have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
*2: The light flashes to indicate a malfunction.
*3: This light illuminates on the center panel.
Wa r n i n g l i g h t s
*1Brake system warning light
(→ P. 5 2 1 )*1Slip indicator
(→ P. 5 2 2 )
*1Brake system warning light
(→ P. 5 2 1 )*1 Automatic headlight
leveling system warning
light ( →P. 5 2 3 )
*1Charging system warning
light ( →P. 5 2 1 )Open door warning light
(→ P. 5 2 3 )
*1Malfunction indicator
lamp ( →P. 5 2 1 )Low fuel level warning light
(→ P. 5 2 3 )
*1SRS warning light
(→ P. 5 2 2 )Driver’s and front passen-
ger’s seat belt reminder light
(→ P. 5 2 3 )
*1ABS warning light
(→ P. 5 2 2 )*3Rear passengers’ seat belt
reminder lights ( →P. 5 2 3 )
*1Electric power steering sys-
tem warning light
(→ P. 5 2 2 )*1Master warning light
(→ P. 5 2 3 )
*1, 2
(if equipped)
Pre-crash safety system
warning light ( →P. 5 2 2 )*1Tire pressure warning light
(→ P. 5 2 3 )

1072. Instrument cluster
2
Instrument cluster
IS300h_EE(OM53D56E)
*1: These lights turn on when the power switch is turned to ON mode to indicate that asystem check is being performed. They will turn off after the hybrid system is on, or
after a few seconds. There may be a malfunction in a system if the light does not come
on, or turn off. Have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes faster than usual toindicate that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators illuminatein the following situations:
• When the power switch is turned to ON mode while the BSM main switch is set to ON.
• When the BSM main switch is set to ON while the power switch is in ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indicators do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
*9EV drive mode indicator
( → P. 2 1 7 )*9
(if equipped)
“SPORT S” indicator
(→ P. 2 9 3 )
*8Eco drive mode indicator
(→ P. 2 9 3 )*9
(if equipped)
“SPORT S+” indicator
(→ P. 2 9 3 )
*9Eco drive mode indicator
(→ P. 2 9 3 )*8Snow mode indicator
(→ P. 2 2 0 )
*8“SPORT” indicator
(→ P. 2 9 3 )*9Snow mode indicator
(→ P. 2 2 0 )
*9
(if equipped)
“SPORT” indicator
(→ P. 2 9 3 )*1, 6“PASSENGER AIR
BAG” indicator
(→ P. 5 4 )