2016 Lexus ES300h warning

472
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
WA R N I N G
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the Owner’s
Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing
so may result in an accident,
causing death or serious injury.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves and
transmitters, make sure to have tires servic ed by your Lexus dealer or other qualified
service shop. In addition, make sure to pu rchase your tire pressure warning valves
and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitte rs may not work properly with non-genu-
ine wheels.

491
ES300h_OM_OM33B71U_(U)
8When trouble arises
8-1. Essential informationEmergency flashers .................. 492
If your vehicle has to be stopped in an emergency .... 493
8-2. Steps to take in an emergency If your vehicle needs to be towed ................................ 494
If you think something is wrong ................ 498
If a warning light turns on or a warning buzzer sounds ..... 499
If a warning message is displayed ............................... 505
If you have a flat tire.................. 508
If the hybrid system will not start ................................................ 518
If the shift lever cannot be shifted from P ..................... 520
If the electronic key does not operate properly .......................521
If the 12-volt battery is discharged ................................. 523
If your vehicle overheats ......... 527
If the vehicle becomes stuck .............................................. 531

494
ES300h_OM_OM33B71U_(U)8-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your hybrid transmission. Contact
your Lexus dealer or commercial towing service before towing.
●A warning message for the hybrid system is shown on the multi-information
display and the vehicle does not move.
●The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flat bed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck
Towing with a wheel-lift type truck
From the frontFrom the rear
Release the parking brake. Use a towing dolly under the front wheels.

499
ES300h_OM_OM33B71U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu
t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (red indicator) and warning buzzer Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
 Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic hybrid transmission control system
 Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Lexus dealer immediately.

5008-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
Electric power steering system warning light (warning buzzer)Indicates a malfunction in the EP S (Electric Power Steering) sys-
tem
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
PCS warning light Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will come on when the TRAC and VSC systems are
turned off. ( P. 2 74 )
• The light will come on when the pre-collision braking is disabled.
(  P. 2 0 4 )
• The light will flash when the system cannot temporarily be used. ( P. 212)
 Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator light
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control system
 Have the vehicle inspected by your Lexus dealer immediately.
The light will flash when the ABS, VSC or TRAC is operating.
Low fuel level warning light
Indicates that remaining fuel is approximately 2.6 gal. (9.7 L,
2.1 Imp.gal.) or less
 Refuel the vehicle.
Seat belt reminder light (warning buzzer)*
Warns the driver and/or front passenger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fa stened to make the warning light
(warning buzzer) turn off.
Master warning light A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
 P. 5 0 5
Warning lightWarning light/Details/Actions

5018-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
8
When trouble arises
*: Driver’s and front passenger’s seat belt warning buzzer: The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the power switch is turned to ON mode, the buzzer sounds for
6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds
once. If the seat belt is stil l unfastened after 30 seconds, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat be lt is still unfastened, the buzzer will sound
in a different tone for 20 more seconds.
The front passenger’s seat be lt warning buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches
a speed of 12 mph (20 km/h). If the seat be lt is still unfastened after 30 seconds, the
buzzer will sound intermittently for 10 seconds. Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 20 more seconds.
■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), “A IR BAG ON” indicator light, “AIR BAG OFF”
indicator light, front passenger’s seat belt bu ckle switch, seat belt pretensioner assem-
blies, airbags, interconnecting wiring and power sources.
(  P. 3 8 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on th e seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
Tire pressure warning light When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 5 0 2 )
•Flat tire ( P. 5 0 8 )
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a fe w minutes. In case the light does
not turn off even if the tire inflation pressure is adjusted, have the
system checked by your Lexus dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pr essure warning system (P. 5 0 2 )
 Have the system checked by your Lexus dealer.
(Flashes)
(If equipped)
“A F S O F F ” i n d i c a t o r Indicates a malfunction in the adaptive front-lighting system
Have the vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details/Actions

5028-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound.
■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 severa l 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 tu rn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
P. 4 6 3
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
power switch is turned to ON mode, ha ve it checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.

5038-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
8
When trouble arises
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediat ely and contact your Lexus dealer. The vehi-
cle will become extremely unstable during braking, and the ABS system may fail, which
could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than us ual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.