2017 TOYOTA COROLLA warning light

4868-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM02494U)
PCS (Pre-Collision System) warning light
When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Collision system)
→Have the vehicle inspected by your Toyota dealer
immediately.
When the warning light flashes (and a buzzer does not
sound):
Indicates that the PCS (Pre-Collision system) is temporar-
ily unavailable, possibly due to either of the following:
• An area around the radar sensor or camera sensor
being dirty or covered with condensation, ice, stickers,
etc.
→Clear the dirt, condensation, ice, stickers, etc.
(→P. 211)
• Radar sensor or camera sensor operational conditions
(such as temperature etc.) being not met
→Driving is possible in this case. The PCS (Pre-Colli-
sion System) will be enabled if the operational condi-
tions (such as temperature etc.) are met again.
When the warning light is illuminated:
Either the VSC (Vehicle Stability Control) system or PCS
(Pre-Collision system) is disabled or both are disabled.
→To enable the PCS, enable both the VSC system and
PCS. (→P. 220, 264)
(Amber)
LDA (Lane Departure Alert with steering control) indica-
tor
The warning light comes on and a warning message is
displayed to indicate that the LDA (Lane Departure Alert
with steering control) system is not available temporarily
or has detected a malfunction.
→P. 495, 496
Tire pressure warning light*3
When the light comes on:
Low tire inflation pressure such as
• Natural causes (→P. 488)
• Flat tire (→P. 513)
→Adjust the tire inflation pressure to the specified
level.
The light will turn off after a few minutes. In case
the light does not turn off even if the tire inflation
pressure is adjusted, have the system checked by
your Toyota dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
→Have the system checked by your Toyota dealer.
Warning lightWarning light/Details/Actions

4888-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM02494U)
■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 belt buckle switch, front passenger occu-
pant classification system, “AIR BAG ON” indicator light, “AIR BAG OFF” indi-
cator light, front passenger’s seat belt buckle switch, seat belt pretensioners
(front), airbags, interconnecting wiring and power sources. (→P. 36)
■Front passenger detection sensor, seat belt reminder and warning
buzzer
If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash and the warning buzzer to
sound even if a passenger is not sitting in the seat.
■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 Toyota dealer
as soon as possible.
■
When the tire pressure warning light comes on (vehicles with a tire
pressure warning system)
Check the tire inflation pressure and adjust to the appropriate level. Push-
ing the tire pressure warning reset switch will not turn off the tire pressure
warning light.
■The tire pressure warning light may come on due to natural causes
(vehicles with a tire pressure warning system)
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflation pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).

4898-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM02494U)■
When a tire is replaced with a spare tire (vehicles with a tire pressure
warning system)
The compact spare tire is not equipped with a tire pressure warning valve
and transmitter. 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.
Replace the spare tire with the repaired tire and adjust the tire inflation
pressure. The tire pressure warning light will go off after a few minutes.
■Conditions that the tire pressure warning system may not function
properly (vehicles with a tire pressure warning system)
The tire pressure warning system will be disabled in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters
are used
●If the ID code on the tire pressure warning valves and transmitters is not
registered in the tire pressure warning computer
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher
The tire pressure warning system may be disabled in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are
nearby
●If a radio set at similar frequency is in use in the vehicle
●If a window tint that affects the radio wave signals is installed
●If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings
●If non-genuine Toyota wheels are used (Even if you use Toyota wheels,
the tire pressure warning system may not work properly with some types
of tires.)
●If tire chains are used
■If the tire pressure warning light frequently comes on after blinking
for 1 minute (vehicles with a tire pressure warning system)
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned on, have it checked by your
Toyota dealer.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
■Electric power steering system warning light (warning buzzer)
When the 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.

4908-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM02494U)
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle 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.
When steering wheel operations are heavier than usual, grip the steering
wheel firmly and operate it using more force than usual.
■
If the tire pressure warning light comes on (vehicles with a tire
pressure warning system)
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 pres-
sure adjustment, 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 Toyota 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 (vehicles with a tire
pressure warning system)
The tire pressure warning system may not activate immediately.

4918-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM02494U)
WARNING
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation pressure
label (tire and load information label). (If your vehicle has tires of a dif-
ferent size than the size indicated on the vehicle placard or tire inflation
pressure label [tire and load information label], you should determine
the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS-tire pressure warning system) that
illuminates a low tire pressure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressure telltale (tire pressure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached
the level to trigger illumination of the TPMS low tire pressure telltale (tire
pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warn-
ing system) malfunction indicator to indicate when the system is not
operating properly. The TPMS (tire pressure warning system) malfunc-
tion indicator is combined with the low tire pressure telltale (tire pressure
warning light). When the system detects a malfunction, the telltale will
flash for approximately one minute and then remain continuously illumi-
nated. This sequence will continue upon subsequent vehicle start-ups
as long as the malfunction exists. When the malfunction indicator is illu-
minated, the system may not be able to detect or signal low tire pres-
sure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a vari-
ety of reasons, including the installation of replacement or alternate tires
or wheels on the vehicle that prevent the TPMS (tire pressure warning
system) from functioning properly. Always check the TPMS (tire pres-
sure warning system) malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the replacement or alter-
nate tires and wheels allow the TPMS (tire pressure warning system) to
continue to function properly.

4938-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM02494U)
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the multi-
information display.
Multi-information display
If any of the warning message or indicator comes on again after the
following actions have been performed, contact your Toyota dealer.
If a warning message or indicator is displayed
If a warning is shown on the multi-information display, stay calm
and perform the following actions:
1
2
Warning message and warning buzzer list
Warning messageDetails/Actions
Indicates that:
• There is a high possibility of a frontal colli-
sion; or
• The pre-collision braking function is operating
A buzzer also sounds.
→Slow the vehicle by applying the brakes.
Monochrome display
Color display
Indicates that your vehicle is nearing the vehicle
ahead (in vehicle-to-vehicle distance control
mode)
A buzzer also sounds.
→Slow the vehicle by applying the brakes.

5008-2. Steps to take in an emergency
COROLLA_TMMMS_TMMC_U (OM02494U)
Indicates that the pre-collision system sensor is
dirty, covered with ice, etc.
→Remove any dirt, ice, etc.
Monochrome display
Color display
Indicates abnormal engine oil pressure.
• The warning message is shown if the engine
oil pressure is too low.
• A buzzer also sounds.
→Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Vehicles without a smart key system:
Indicates that the engine switch is turned off or
turned to the “ACC” position mode and the
driver’s door is opened while the lights are turned
on.
A buzzer also sounds.
→Turn the lights off.
Vehicles with a smart key system:
Indicates that the engine switch is turned off or
turned to ACCESSORY mode and the driver’s
door is opened while the lights are turned on.
A buzzer also sounds.
→Turn the lights off.
Warning messageDetails/Actions
(Flashes)
(Flashes)

5018-2. Steps to take in an emergency
8
When trouble arises
COROLLA_TMMMS_TMMC_U (OM02494U)
(If equipped)
Indicates that the moon roof is not fully closed
(with the engine switch off, and the driver’s door
open)
A buzzer also sounds.
→Close the moon roof.
Indicates a malfunction in:
• The automatic headlight leveling system;
• The Automatic High Beam system; or
• The LED headlight system
A buzzer also sounds.
→Have the vehicle inspected by your Toyota
dealer.
Monochrome display
Color display
(If equipped)
Indicates that the washer fluid level is low.
→Add washer fluid.
Color display onlyIndicates that remaining fuel is approximately 2.0
gal. (7.5L, 1.7 Imp. gal.) or less
→Refuel the vehicle.
Color display only
Indicates that the TRAC (Traction Control) sys-
tem is turned off
→Turn the TRAC on. (→P. 264)
Warning messageDetails/Actions
(Flashes)