Toyota Highlander (2018 year). Manual - part 143

584

8-2. Steps to take in an emergency

Master warning light

A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.

→ P. 591

Tire pressure warning light

When the light comes on:
Low tire inflation pressure such as
• Natural causes (

→P. 586)

• Flat tire (

→P. 608)

→ Adjust the tire inflation pressure (including the

full-size spare tire) 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 
(

→P. 587)

→ Have the system checked by your Toyota dealer.

Warning light

Warning light/Details/Actions

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8-2. Steps to take in an emergency

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1

: Brake system warning buzzer: When there is a possible problem that could

affect braking performance, the warning light will come on and a warning
buzzer will sound.

*

2

: Parking brake engaged warning buzzer: 

→P. 594

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3

: If equipped

*

4

: Driver’s seat belt buzzer:

Vehicles without a smart key system: The driver’s seat belt buzzer sounds
to alert the driver that his or her seat belt is not fastened. Once the engine
switch is turned to the “ON” position, 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 still unfastened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for 90 more seconds.

Vehicles with a smart key system: The driver’s seat belt buzzer sounds to
alert the driver that his or her seat belt is not fastened. Once the engine
switch is turned to IGNITION 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 still unfastened after 24 seconds, the buzzer will
sound intermittently for 6 seconds. Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 90 more seconds.

Front passenger’s seat belt buzzer:

The front passenger’s seat belt 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 belt is still unfas-
tened after 24 seconds, the buzzer will sound intermittently for 6 seconds.
Then, if the seat belt is still unfastened, the buzzer will sound in a different
tone for 90 more seconds.

*

5

: Rear seat seat belt buzzer:

The second and third passenger’s seat belt buzzer sounds to alert the sec-
ond and third passengers that his or her seat belt is not fastened. The
buzzer sounds for 6 seconds after the vehicle reaches a speed of 12 mph
(20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 24 more seconds.

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8-2. Steps to take in an emergency

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SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), driver’s
seat position sensor, driver’s seat belt buckle switch, front passenger occu-
pant classification system (ECU and sensors), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buckle switch,
driver’s seat belt pretensioner, front passenger’s seat belt pretensioner and
force limiter, airbags, interconnecting wiring and power sources. (

→P. 42) 

■

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.

■

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.

■

When the tire pressure warning light comes on
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
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).

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8-2. Steps to take in an emergency

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When a tire is replaced with a spare tire



Vehicles with a compact spare tire

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.



Vehicles with a full-size spare tire

The spare tire is also equipped with the tire pressure warning valve and
transmitter. The tire pressure warning light will turn on if the tire inflation
pressure of the spare tire is low. If a tire goes flat, even though the flat tire
is replaced with the spare tire, the tire pressure warning light does not
turn off. Replace the spare tire with the repaired tire and adjust to the
proper tire inflation pressure. The tire pressure warning light will turn off
after a few minutes.

■

Conditions that the tire pressure warning system may not function
properly
→P. 537

■

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 engine switch is turned on, have it checked by your
Toyota dealer.

■

Customization that can be configured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. 
(Customizable features 

→P. 690) However, Toyota recommends that the seat

belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.

■

Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.