TABLE OF CONTENTS6
IS300h_EE(OM53B95E)
7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior.......... 426
Cleaning and protecting
the vehicle interior .......... 430
7-2. Maintenance
Maintenance
requirements.................... 433
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 435
Hood .................................. 437
Positioning a floor jack ..... 438
Engine compartment ......... 439
12-volt battery ................... 447
Tires................................... 450
Replacing the tire .............. 460
Tire inflation pressure ....... 466
Wheels............................... 468
Air conditioning filter ....... 470
Electronic key battery ....... 472
Checking and replacing
fuses ................................ 475
Light bulbs ........................ 4798-1. Essential information
Emergency flashers ........... 498
If your vehicle has to be
stopped in an
emergency ....................... 499
8-2. Steps to take in an
emergency
If your vehicle needs to
be towed .......................... 500
If you think something
is wrong........................... 506
If a warning light turns
on or a warning buzzer
sounds ............................. 507
If a warning message is
displayed ......................... 513
If you have a flat tire
(vehicles without
run-flat tires) ................... 530
If you have a flat tire
(vehicles with
run-flat tires) ................... 544
If the hybrid system will
not start............................ 545
If the shift lever cannot
be shifted from P ............. 547
7Maintenance and care8When trouble arises
16Pictorial index
IS300h_EE(OM53B95E)
Instrument panel (Left-hand drive vehicles)
Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 209
Starting the hybrid system/changing the modes . . . . . . . . . . . . . . P. 209
Emergency stop of the hybrid system . . . . . . . . . . . . . . . . . . . . . . P. 499
When the hybrid system will not start . . . . . . . . . . . . . . . . . . . . . . P. 545
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 525
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 500
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . . . . P. 547
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 109
Reading the meters/adjusting the instrument panel light . . . . . . . P. 109
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 104
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . . . . P. 507
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24Pictorial index
IS300h_EE(OM53B95E)
Instrument panel (Right-hand drive vehicles)
Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 209
Starting the hybrid system/changing the modes . . . . . . . . . . . . . . P. 209
Emergency stop of the hybrid system . . . . . . . . . . . . . . . . . . . . . . P. 499
When the hybrid system will not start . . . . . . . . . . . . . . . . . . . . . . P. 545
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 525
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Changing the shift position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 500
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . . . . P. 547
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 109
Reading the meters/adjusting the instrument panel light . . . . . . . P. 109
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 104
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . . . . P. 507
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371-1. For safe use
1
For safety and security
IS300h_EE(OM53B95E)
Make sure that you can see backward clearly by adjusting the inside and
outside rear view mirrors properly. (P. 178, 180)
Adjusting the mirrors
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
Do not place a cushion between the driver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce the
effectiveness of the seat belt and head restraint.
Do not place anything under the front seats.
Objects placed under the front seats may become jammed in the seat tracks
and stop the seat from locking in place. This may lead to an accident and the
adjustment mechanism may also be damaged.
When driving over long distances, take regular breaks before you start to feel
tired.
Also, if you feel tired or sleepy while driving, do not force yourself to con-
tinue driving and take a break immediately.
801-2. Hybrid system
IS300h_EE(OM53B95E)
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 elec-
tric motor (traction motor) is used.
During normal driving
The gasoline engine is predominantly used. The electric motor (trac-
tion motor) charges the hybrid battery (traction battery) as necessary.
When accelerating sharply
When the accelerator pedal is depressed heavily, the power of the
hybrid battery (traction battery) is added to that of the gasoline engine
via the electric motor (traction motor).
When braking (regenerative braking)
The electric motor (traction motor) charges the hybrid battery (traction
battery).
811-2. Hybrid system
1
For safety and security
IS300h_EE(OM53B95E)
Regenerative braking
In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the recharging of the
hybrid battery (traction battery).
The accelerator pedal is released while driving with the shift lever in D or S.
The brake pedal is depressed while driving with the shift lever in D or S.
EV indicator
Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically 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 will slowly discharge. For this rea-
son, 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 becomes fully discharged and
you are unable to jump-start the vehicle with a 12-volt battery, contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
If the shift lever is in N, the hybrid battery (traction battery) will not be charged.
Always shift the shift lever to P when the vehicle is stopped. When driving in
heavy traffic, operate the vehicle with the shift lever in D or S to avoid dis-
charging the battery.
Charging the 12-volt battery
P. 552 The EV indicator comes on when the vehi-
cle is driven using only the electric motor
(traction motor) or the gasoline engine is
stopped.
821-2. Hybrid system
IS300h_EE(OM53B95E)
After the 12-volt battery has discharged or has been changed or removed
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 qualified and equipped pro-
fessional.
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to
move. For safety, apply the parking brake and make sure to shift the shift lever to
P when parked.
The following sounds or vibrations may occur when the hybrid system is operat-
ing and are not a malfunction:
Motor sounds may be heard from under the vehicle.
Sounds may be heard from the hybrid battery (traction battery) behind the rear
seats when the hybrid system starts or stops.
Sounds from the hybrid system may be heard when the trunk lid is open.
Sounds may be heard from the hybrid transmission when the hybrid system
starts or stops.
Engine sounds may be heard when accelerating sharply.
Sounds may be heard due to regenerative braking when the brake pedal is
depressed.
Vibration may be felt when the gasoline engine starts or stops.
Cooling fan sounds may be heard from the air intake vents on the both sides of
the rear seatback.
Maintenance, repair, recycling, and disposal
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional regarding maintenance, repair, recycling 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. 575)
841-2. Hybrid system
IS300h_EE(OM53B95E)
There is an air intake vent on the
right side of the rear seatback for
the purpose of cooling the hybrid
battery (traction battery). If the vent
becomes blocked, the hybrid battery
may overheat, leading to a reduc-
tion in hybrid battery output.
When a certain level of impact is detected by the impact sensor, the emer-
gency shut off system blocks the high voltage current and stops the fuel
pump to minimize the risk of electrocution and fuel leakage. If the emer-
gency 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 professional.
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 instruc-
tions.
(P. 513)
Hybrid battery (traction battery) air vent
Emergency shut off system
Hybrid warning message