2013 Lexus IS300h ECU

4947-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
CAUTION
Replacing light bulbs
Turn off the lights. Do not attempt to replace the bulb immediately after turn-
ing off the lights.
The bulbs become very hot and may cause burns.
Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth to
avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This may
damage the headlights or cause condensation to build up on the lens.
Discharge headlights (if equipped)
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional before replacing the discharge headlights (including
light bulbs).
Do not touch the discharge headlight’s high voltage socket when the head-
lights are turned on.
An extremely high voltage of 30000 V will be discharged and could result in
death or serious injury by electric shock.
Do not attempt to take apart or repair the headlight bulbs, connectors, power
supply circuits, or related components.
Doing so could result in electric shock and death or serious injury.
To prevent damage or fire
Make sure bulbs are fully seated and locked.
Check the wattage of the bulb before installing to prevent heat damage.
Vehicles with discharge headlights: While
the headlights are turned on, and for a
short time after they have been turned off,
metal components at the rear of the head-
light assembly will be extremely hot. To
prevent burns, do not touch these metal
components until you are certain they
have cooled down.
Metal components

4998-1. Essential information
8
When trouble arises
IS300h_EE(OM53B95E)
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort
required to slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed
as much as possible.
To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or
press it briefly 3 times or more in
succession.
Stop the vehicle in a safe place by the road.
If your vehicle has to be stopped in an emergency
Only in an emergency, such as if it becomes impossible to stop the vehi-
cle in the normal way, stop the vehicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or
more or press briefly 3 times or
4
CAUTION
If the hybrid system has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake
pedal harder to depress and the steering wheel heavier to turn. Decelerate as
much as possible before turning off the hybrid system.
5

500
IS300h_EE(OM53B95E)8-2. Steps to take in an emergency
The following may indicate a problem with your transmission. Contact
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional before towing.
The hybrid system is operating but the vehicle will not move.
The vehicle makes an abnormal sound.
If a tow truck is not available in an
emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency tow-
ing eyelet. This should only be
attempted on hard surfaced roads for
short distances at under 30 km/h (18
mph).
A driver must be in the vehicle to
steer and operate the brakes. The
vehicle’s wheels, drive train, axles,
steering and brakes must be in good
condition.
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional or a commercial towing service, using a lift-type
truck or flat bed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.
Before towing
Emergency towing

5018-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
Take out the towing eyelet. (P. 460)
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a rag
between the screwdriver and the
vehicle body as shown in the illus-
tration.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.
Installing towing eyelet
1
2
3
4

5048-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Before emergency towing
Release the parking brake.
Shift the shift lever to N.
Turn the power switch to ACCESSORY (hybrid system off) or ON (hybrid
system operating) mode.
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
When transporting the vehicle
Caution while towing
Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress
on the emergency towing eyelets and the cables or chains. Always be cautious
of the surroundings and other vehicles while towing.
If the hybrid system is off, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
1
2
3
Be sure to transport the vehicle with the
rear wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the rear wheels contacting the
ground, the drivetrain and related parts
may be damaged or the electric motor
(traction motor) may generate electricity. If
the motor generates electricity, depending
on the state of the damage or malfunction,
fi d t h t i it

5288-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Once
The electronic key has a low bat-
tery.
Replace the electronic key
battery. (P. 472)
Once
The steering lock could not be
released within 3 seconds of the
power switch being pressed.
Press the power switch while
depressing the brake pedal
and moving the steering wheel
left and right.
Once
Indicates a malfunction in the
smart entry & start system
Have the vehicle inspected by
any authorized Lexus dealer
or repairer, or another duly
qualified and equipped profes-
sional.
Once
• When the doors were unlocked
with the mechanical key and
then the power switch was
pressed, the electronic key
could not be detected in the
vehicle.
• The electronic key could not
be detected in the vehicle even
after the power switch was
pressed two consecutive times.
Touch the electronic key to
the power switch while
depressing the brake pedal.
Once
During a hybrid system starting
procedure in the event that the
electronic key was not function-
ing properly (P. 550), the
power switch was touched with
the electronic key.
Press the power switch within
10 seconds of the buzzer
sounding.
Interior
buzzerExterior
buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5438-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
CAUTION
When fixing the flat tire
Stop your vehicle in a safe and flat area.
Do not touch the wheels or the area around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven, the wheels and the area around the brakes
may be extremely hot. Touching these areas with hands, feet or other body
parts may result in burns.
Connect the valve and hose securely with the tire installed on the vehicle.
If the hose is not properly connected to the valve, air leakage may occur or
sealant may be sprayed out.
If the hose comes off the valve while inflating the tire, there is a risk that the
hose will move abruptly due to air pressure.
After inflation of the tire has completed, the sealant may splatter when the
hose is disconnected or some air is let out of the tire.
Follow the operation procedure to repair the tire. If the procedure is not fol-
lowed, the sealant may spray out.
Keep back from the tire while it is being repaired, as there is a chance of it
bursting while the repair operation is being performed. If you notice any
cracks or deformation of the tire, turn off the compressor switch and stop the
repair operation immediately.
The kit may overheat if operated for a long period of time. Do not operate the
compressor continuously for more than 10 minutes.
Parts of the kit become hot during operation. Be careful handling the kit
during and after operation.
Do not attach the vehicle speed warning sticker to an area other than the one
indicated. If the sticker is attached to an area where an SRS airbag is located,
such as the pad of the steering wheel, it may prevent the SRS air bag from
operating properly.
Driving to spread the liquid sealant evenly
Drive the vehicle carefully at a low speed. Be especially careful when turning
and cornering.
If the vehicle does not drive straight or you feel a pull through the steering
wheel, stop the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 130 kPa (1.3 kgf/cm
2 or
bar, 19 psi) or below, this may indicate severe tire damage.

5809-2. Customization
IS300h_EE(OM53B95E)
Smart entry & start system (P. 136, 143, 149)
*: If equipped
Wireless remote control (P. 136, 143)
Driving position memory* (P. 168)
*: If equipped
FunctionDefault set-
tingCustomized set-
ting
Smart entry & start sys-
temOnOffO—OO
Smart door unlocking*All the doorsDriver's doorO—OO
Number of consecutive
door lock operations
*
As many as
desired2 times———O
1234
FunctionDefault set-
tingCustomized set-
ting
Wireless remote controlOnOff———O
Unlocking operation
All doors
unlocked in
one step
Driver's door
unlocked in one
step, all doors
unlocked in two
steps
O—OO
Trunk unlocking opera-
tionPress and
hold (short)
One short press
———O
Push twice
Press and hold
(long)
Off
1234
FunctionDefault set-
tingCustomized set-
ting
Driver's seat movement
when exiting the vehicleStandardOffO—OOPartial
Selecting the door link-
ing driving position mem-
ory with door unlock
operation
Driver's doorAll doors———O
1234