check engine TOYOTA SEQUOIA 2019 (in English) Service Manual

4266-3. Do-it-yourself maintenance
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Checking and replacing fuses
Turn the engine switch to the “LOCK” position.
Open the Fuse box cover.
Engine compartment
Push the tab in and lift the lid
off.
Under the instrument panel
Remove the lid.
Remove the fuse with the pull-
out tool.
Only type A fuse can be removed
using the pullout tool.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, che ck and replace the fuses as nec-
essary.
1
2
3

4517-2. Steps to take in an emergency
7
When trouble arises
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*1: This light illuminates on the multi-information display.
*2: Driver’s seat belt buzzer:The driver’s seat belt buzzer sounds to alert the driver that h is or her seat
belt is not fastened. Once the engine switch is turned to the “ ON” or
“START” position, the buzzer sounds for 6 seconds. If the vehic le reaches
a speed of 12 mph (20 km/h), the buzzer sounds once. If the sea t belt is
still unfastened after 24 seconds, the buzzer will sound interm ittently for 10
seconds. Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the fron t passenger
that his or her seat belt is not fastened. The buzzer sounds on ce if the
vehicle reaches a speed of 12 mph (20 km/h). If the seat belt i s still unfas-
tened after 24 seconds, the buzzer will sound intermittently fo r 10 seconds.
Then, if the seat belt is still unfastened, the buzzer will sou nd in a different
tone for 20 more seconds.
Seat belt reminder light (warning buzzer)*2
Warns the driver and/or front passenger to fasten their
seat belts
 Fasten the seat belt.
If the front passenger’s s eat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (wa rning buzzer) turn off.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 4 5 3 )
• Flat tire ( P. 465)
 Adjust the tire inflation pressure to the speci-
fied 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 p ressure warning system
(  P. 4 5 3 )
 Have the system checked by your Toyota
dealer.
Master warning light
A buzzer sounds and warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.
 P. 457
Warning lightWarning light/Details/Actions

4537-2. Steps to take in an emergency
7
When trouble arises
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When the tire pressure warning light comes on
Inspect the appearance of the ti
re to check that the tire is not punctured.
If the tire is punctured: P. 465
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered
sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes , check
that the tire inflation pressure is at the specified level and carry out ini-
tialization. ( P. 4 0 7 )
The warning light may come on again if the above operations are con-
ducted without first allowing t he tire temperature to lower suf ficiently.
■The tire pressure warning light may come on due to natural caus es
The tire pressure warning light may come on due to natural caus es such
as natural air leaks and tire inflation pressure changes caused by tem-
perature.
In this case, adjusting the tire inflation pressure will turn o ff the warning
light (after a few minutes).
■When a tire is replace d with a spare tire
The temporary spare tire is not equipped with the tire pressure warning
valve and transmitter. If a tire goes flat, the tire pressure w arning light will
not turn off even though the flat tire is replaced with the tem porary spare
tire.
Replace the temporary spare tire with the repaired tire and adj ust the
proper tire inflation pressure. The tire pressure warning light will turn off
after several minutes.
■Conditions that the tire pressure warning system may not functi on
properly
 P. 4 1 1
■If the tire pressure warning light frequently comes on after bl inking
for 1 minute
If the tire pressure warning light frequently comes on after bl inking for
1 minute when the engine switch i s turned to the “ON” position, have it
checked by your Toyota dealer.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy pla ce or an
audio sound.

4617-2. Steps to take in an emergency
7
When trouble arises
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Indicates the following:• The brake fluid level is low; or
• The brake system is malfunctioning.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates remaining fuel is approximately 4.0 gal.
(15.0 L, 3.3 Imp.gal.) or less
A buzzer also sounds.
 Refuel the vehicle.
Indicates that the tire inflation pressure is low
Check the tire inflation pressure, and
adjust to the appropriate level.
Indicates that the washer fluid level is low
 Add washer fluid.
Indicates that intuitive parking assist sensor is
dirty or covered with ice (if equipped)
Clean the sensor.
Indicates that the headlight switch is in or
position (with the key removed and the
driver’s door opened) A buzzer also sounds.
 Turn the lights off.
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.
(U.S.A.)
Indicates that all maintenance according to the
driven distance on the maintenance schedule
*
should be performed soon.
Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perfo rm maintenance.
Warning messageDetails/Actions
Check Brake System
Fuel Low
Tire Pressure Low
Check Tire
Windshield
Washer Fluid Low
Clean Parking Assist Sensor
Turn Lights Off
(Flashes)
Moon Roof Open
(Flashes)
Maintenance
Required Soon

4677-2. Steps to take in an emergency
7
When trouble arises
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WARNING
■Using the tire jack
Improper use of the tire jack may cause the vehicle to suddenly fall off
the jack, leading to death or serious injury.
●Do not use the tire jack for any purpose other than replacing t ires or
installing and removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat
tire.
Do not use it on other vehicles, and do not use other tire jacks for
replacing tires on this vehicle.
●Always check that the tire jack is securely set to the jack poi nt.
●Do not put any part of your body under the vehicle while it is supported
by the jack.
●Do not start or run the engine while your vehicle is supported by the
jack.
●Do not raise the vehicle w hile someone is inside.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to
replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that n o one
working on or near the vehicle may be injured.
■Using the jack handle
Insert the square head securely until you hear a click to prevent the
extension parts from coming apart unexpectedly.

4857-2. Steps to take in an emergency
7
When trouble arises
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Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the engine to check that the radiator cooling fan operate and
to check for coolant leaks from the radiator or hoses.
If the fan are not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan are operating:
Have the vehicle inspected at the neare st Toyota dealer.
5
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the ho od until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could spray out.
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7

4948-1. Specifications
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*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
■
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to sat -
isfy the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Lubrication system
Oil capacity
(Drain and refill  reference
*)
With filter
Without filter7.9 qt. (7.5 L, 6.6 Imp.qt.)
7.5 qt. (7.1 L, 6.2 Imp.qt.)
Outside temperature

4968-1. Specifications
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Cooling system
Capacity
Vehicles without towing package
13.1 qt. (12.4 L, 10.9 Imp.qt.)
Vehicles with towing package
14.1 qt. (13.3 L, 11.7 Imp.qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technol-
ogy
Do not use plain water alone.
Ignition system
Spark plug
Make
GapDENSO SK20HR11
0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system
Battery
Open voltage at
68 °F (20 °C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11.8  12.0 V Discharged
(Voltage checked 20 minutes after the
engine and all the lights are turned off.)
Charging rates5 A max.

547Alphabetical index
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EDR (Event data recorder) ........ 10
Electronically modulated air suspension ....................... 289
Emergency flashers ................ 438
Emergency, in case of
If a warning buzzer sounds ................................ 448
If a warning light turns on ....................................... 448
If a warning message
is displayed......................... 457
If the engine will not start ...... 479
If the vehicle battery is discharged .......................... 480
If you have a flat tire ............. 465
If you think something is wrong .............................. 446
If your vehicle becomes stuck ................................... 487
If your vehicle has to be stopped in an emergency ... 439
If your vehicle needs
to be towed ......................... 441
If your vehicle overheats ....... 484 Engine
Compartment ........................ 394
Engine switch ....................... 198
Hood ..................................... 393
How to start the engine......... 198
Identification number ............ 492
If the engine will not start ...... 479
Ignition switch
(engine switch) ................... 198
Overheating .......................... 484
Engine coolant......................... 398
Capacity................................ 496
Checking............................... 398
Preparing and checking before winter ...................... 314
Engine coolant temperature gauge ....................................... 86
Engine immobilizer system ...... 74
Engine oil ................................. 395 Capacity................................ 494
Checking............................... 395
Preparing and checking before winter ...................... 314
Engine switch .......................... 198
Event data recorder (EDR)........ 10
E