2013 Lexus IS300h power

4757-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Turn the power switch off.
Open the fuse box cover.
Engine compartment:
Remove the clips.
Push the tabs on either side to
detach the lock and lift the lid off
while pulling the lock plate.
When installing the lid, check that
the lock plate and the tabs on
either side are connected cor-
rectly.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
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4787-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
After a fuse is replaced
If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (P. 479)
If the replaced fuse blows again, have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehi-
cle. Because certain bulbs are connected to circuits designed to prevent overload,
non-genuine parts or parts not designed for this vehicle may be unusable.
CAUTION
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
Never use a fuse of a higher amperage rating than that indicated, or use any
other object in place of a fuse.
Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
Do not modify the fuses or fuse boxes.
Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near
the fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
Before replacing fuses
Have the cause of electrical overload determined and repaired by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional as soon as possible.

4937-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Headlights
Front position lights and daytime running lights
LED front fog lights (if equipped)
Side turn signal lights
Stop/tail lights
Tail lights
Rear fog light
High mounted stoplight
License plate lights
Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or
may go out temporarily. The discharge bulbs will come on when normal power is
restored.
LED Lights
The lights other than the discharge headlights (if equipped), halogen front fog
lights (if equipped), front turn signal lights, rear turn signal lights, back-up light
and outer foot lights each consist of a number of LEDs. If any of the LEDs burn
out, take your vehicle to any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional to have the light replaced.
Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional for more information in the fol-
lowing situations:
Large drops of water have built up on the inside of the lens.
Water has built up inside the headlight.
When replacing the front turn signal lights (vehicles with LED headlights)
When the washer fluid filler opening is removed with a large amount of washer
fluid contained in the washer tank, washer fluid may spill onto the vehicle and
cleaning may be required.
When replacing light bulbs
P. 478

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:
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Press and hold for 2 seconds or
more or press briefly 3 times or
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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.
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5028-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Do not tow with a sling-type truck
to prevent body damage.
Towing with a sling-type truck
Towing with a wheel-lift type truck
From the frontFrom the rear
Use a towing dolly under the rear
wheels.Turn the power switch to ACCES-
SORY mode so that the steering
wheel is unlocked.

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.
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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

5058-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
NOTICE
To prevent causing serious damage to the transmission when towing using a
wheel-lift type truck
Never tow this vehicle from the front with the rear wheels on the ground.
To prevent damage to the vehicle when towing using a wheel-lift type truck
Do not tow the vehicle from the rear with the power switch off. The steering
lock mechanism is not strong enough to hold the front wheels straight.
When raising the vehicle from the rear, ensure adequate ground clearance for
towing at the opposite end of the raised vehicle. Without adequate clearance,
the vehicle could be damaged while being towed from the rear.
To prevent body damage when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
To prevent damage to the vehicle
Do not use the rear tie down hooks when your vehicle is towed.