2015 Lexus ES300h ECU

ES350_300h_OM_OM33B99U_(U)
6117-3. Do-it-yourself maintenance
7
Maintenance and care
CAUTION
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning
off the lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the li ght 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 en tering the headlight unit. This may damage
the headlights or cause condensati on to build up on the lens.
■Discharge headlights (if equipped)
●Contact your Lexus dealer before replacing the discharge he adlights (including
light bulbs).
●Do not touch the discharge headlight’s high voltage socket when the headlights
are turned on.
An extremely high voltage of 25000 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.

615
ES350_300h_OM_OM33B99U_(U)
8-1. Essential information
8
When trouble arises
If your vehicle has to be stopped in an emergency
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 engine .
If the shift lever cannot be shifted to N
Keep depressing the brake pedal wi th both feet to reduce vehicle
speed as much as possible.
Gasoline vehicles: To stop the
engine, press and hold the
“START STOP ENGINE” switch
for 2 consecutive seconds or
more, or press it briefly 3 times or
more in succession.
Hybrid vehicles: To stop the
hybrid system, press and hold the
“POWER” switch for 2 consecu-
tive seconds or more, or press it
briefly 3 times or more in succes-
sion.
Stop the vehicle in a safe place by the road.
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 more
4
Press and hold for 2 seconds or more
or press briefly 3 times or more
5

6198-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
Gasoline vehicles: 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 towing eyelet. This
should only be attempted on hard
surfaced roads for 50 miles (80
km) at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steeri ng and brakes must be in good condi-
tion.
Hybrid vehicles: If a tow truck is not available in an emergency, your vehi-
cle may be temporarily towed using a cable or chain secured to the emer-
gency towing eyelet. This should only be attempted on hard surfaced
roads for short distances at under 18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steeri ng and brakes must be in good condi-
tion.
Emergency towing

6208-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
Take out the towing eyelet. (P. 660)
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a rag
between the screwdriver and the vehi-
cle body as shown in the illustration.
Insert the towing eyelet into the
hole and tighten partially by hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.
Securely attach a cable or chain to the towing eyelet.
Take care not to damage the vehicle body.
Installing towing eyelet
1
2
3
4
5

6228-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When towing the vehicle
■While towing
●When towing using cables or chains, avoid sudden starts, etc. which place exces-
sive stress on the eyelet, cables or chains. The towing eyelet, cables or chains may
become damaged, broken debris may hit people and cause serious damage.
●Do not turn the “START STOP ENGINE” <“POWER”> switch off.
This may lead to an accident as the front wheels will be locked by the parking lock.
■Installing towing eyelet to the vehicle
Make sure that towing eyel et is installed securely.
If not securely installed, towing eyelets may come loose during towing.
Gasoline vehicles: Be sure to transport the
vehicle with the front wheels raised or with all
four wheels raised off the ground.
If the vehicle is towed with the front wheels
contacting the ground, the drivetrain and
related parts may be damaged.
Hybrid vehicles: Be sure to transport the
vehicle with the front wheels raised or with all
four wheels raised off the ground. If the vehi-
cle is towed with the front wheels contacting
the ground, the drivetrain and related parts
may be damaged or electricity generated by
the operation of the motor may cause a fire
to occur depending on the nature of the
damage or malfunction.

6318-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors,
side impact sensors (front door), side impact sensors (front), side impact sensors
(rear), driver’s seat position sensor, driver’s seat belt buckle switch, front passenger
occupant classification system (ECU and sensors), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buckle switch, seat belt
pretensioner assemblies, airbags, inte rconnecting wiring and power sources.
(  P. 4 0 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sen-
sor may cause the warning light to flash an d the warning buzzer to sound even if a
passenger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch will not turn off the tire pressure warning light.

6558-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
InteriorbuzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection procedure
Once
Gasoline vehicles
Hybrid vehicles
•When the doors were unlocked
with the mechan-
ical key and then
the “START
STOP ENGINE”
<“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 “START
STOP ENGINE”
<“POWER”>
switch was
pressed two con-
secutive times.
To u c h t h e
electronic
key to the
“START
STOP
ENGINE”
<“POWER”>
switch while
depressing
the brake
pedal.
Once
Gasoline vehicles
Hybrid vehicles
An attempt was
made to start the
engine tem> with the shift
lever in an incorrect
position.Shift the
shift lever to
P and start
the engine
tem>.
(Flashes)
(Flashes)
(Flashes)
(Flashes)

6638-2. Steps to take in an emergency
ES350_300h_OM_OM33B99U_(U)
8
When trouble arises
Open the luggage mat. (P. 4 8 8 )
Remove the auxiliary boxes.
Loosen the center fastener that secures the spare tire.
Taking out the spare tire
1
2
Vehicles with a compact spare
tireVehicles with a full-size spare
tire
3
Vehicles with a compact spare
tireVehicles with a full-size spare
tire
CAUTION
■When storing the spare tire
Be careful not to catch fingers or other body parts between the spare tire and the
body of the vehicle.