engine TOYOTA TUNDRA 2023 Owners Manual

4797-2. Steps to take in an emergency
7
When trouble arises
If a tow truck is not available in an emergency, your vehicle may be
temporarily towed using cables or chains secured to the emergen cy
towing hook(s). This should only be attempted on hard surfaced roads
for at most 50 miles (80 km) at under 18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes . The
vehicle’s wheels, drivetrain, axles, steering and brakes must b e in
good condition.
Securely attach a cables or chains to the towing hook(s).
Take care not to damage the vehicle body.
Vehicles without a smart key system:
Enter the vehicle being towed and start the engine.
If the engine does not start, turn the engine switch to the “ON ” position.
Vehicles with a smart key system:
Enter the vehicle being towed and start the engine.
If the engine does not start, turn the engine switch to IGNITIO N ON mode.
4WD models: Put the front-wheel drive control switch in “2WD”.
Shift the shift lever to N and release the parking brake.
Vehicles with an automatic trans mission: When the shift lever can-
not be shifted. ( P. 214)
■While towing
If the engine is not running, the power assist for the brakes a nd steering will
not function, making steering and braking more difficult.
Emergency towing
Emergency towing procedure
1
Ty p e AType B
2
3
4

4807-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks un der the vehicle.
(Water dripping from the air conditioning a fter use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points high er
than normal.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine misses, stumbli ng or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one s ide when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touch es
the floor
If you notice any of the followi ng symptoms, your vehicle proba -
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

481
7
When trouble arises
7-2. Steps to take in an emergency
Fuel pump shut off system
Follow the procedure below to restart the engine after the system is
activated.
Vehicles without a smart key system:
Turn the engine switch to the “ACC” or “LOCK” position.
Vehicles with a smart key system:
Turn the engine switch to ACCESSORY or turn it off.
Restart the engine.
To minimize the risk of fuel leakage when the engine stalls or
when an airbag inflates upon collision, the fuel pump shut off
system stops supply of fuel to the engine.
NOTICE
■ Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
1
2

4827-2. Steps to take in an emergency
If a warning light turns on or a war ning
buzzer sounds
Calmly perform the following actions if any of the warning ligh ts
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and w arning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light • Low brake fluid
• Malfunction in the brake system
*1
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The emission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
 Have the vehicle inspected by your Toyota 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 Toyota 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 Toyota dealer
immediately.

4857-2. Steps to take in an emergency
7
When trouble arises
*3: Driver’s seat belt buzzer:The driver’s seat belt warning buzzer sounds to alert the drive r that his or
her seat belt is not fastened. Once the engine switch is turned to the “ON”
position (vehicles without smart entry & start system) or IGNIT ION ON
mode (vehicles with smart entry & start system), the buzzer sou nds. If the
seat belt is still unfastened, the buzzer sounds intermittently for a certain
period of time after the vehicle reaches a certain speed.
Front passenger’s seat belt buzzer:
The front passenger's seat belt warning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the sea t belt is unfas-
tened, the buzzer sounds intermittently for a certain period of time after the
vehicle reaches a certain speed.
*4: Parking brake engaged warning buzzer:
A buzzer will sound if the vehicle is driven at a speed of approximately
3 mph (5 km/h) or more.
*5: If equipped
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front), side impact sensors (rear ), driver’s seat
position sensor, driver’s seat belt buckle switch, front passen ger 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
pretensioners assemblies, airbags, interconnecting wiring and power
sources. ( P. 38)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g 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.

4867-2. Steps to take in an emergency
■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 (if equipped)
Check the tire inflation pressure and adjust to the appropriate level. Push-
ing the tire pressur e warning reset switch will not turn off the tire pressure
warning light.
■The tire pressure warning light may come on due to natural caus es
(if equipped)
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 w ill turn off the
warning light (after several minutes).
■When a tire is replaced with a spare tire (vehicles with the ti re pres-
sure warning system)
The temporary spare tire is not equipped with a tire pressure w arning
valve and transmitter. If a tire goes flat, the tire pressure w arning light will
not turn off even though the flat tire has been replaced with t he temporary
spare tire. Replace the temporary spare tire with the repaired tire and
adjust the tire inflation pressu re. The tire pressure warning l ight will go off
after several minutes.
■Conditions that the tire pressure warning system may not functi on
properly (if equipped)
 P. 4 3 6
■If the tire pressure warning light frequently comes on after bl inking
for 1 minute (if equipped)
If the tire pressure warning light frequently comes on after bl inking for 1
minute when the engine switch is turned to “ON” position (vehic les with-
out a smart key system) or IGNITION ON mode (vehicles with a sm art
key system), 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.

4907-2. Steps to take in an emergency
(If equipped)
Indicates that the automatic transmission fluid
temperature is too high.A buzzer also sounds.
 Immediately stop the vehicle in a safe
place, shift the shift lever to P and wait until
the message and light go off.
If the message and light go off, you may
start the vehicle again.
If the message and light do not go off, con-
tact your Toyota dealer.
Indicates that the engine coolant temperature is
too high. A buzzer also sounds.
 P. 534
Indicates abnormal engine oil pressure.
The warning light may come on 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.
Indicates a malfunction in the vehicle’s charging
system.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Warning messageDetails/Actions

4927-2. Steps to take in an emergency
(If equipped)
Indicates a malfunction in the cruise control sys-
tem.Press the “ON-OFF” button once to deactivate
the system, and then press the button again to
reactivate the system.
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the dynamic radar
cruise control system.
Press the “ON-OFF” button once to deactivate
the system, and then press the button again to
reactivate the system.
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the Brake Override
System. A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
(2GR-FKS engine only)
Indicates that the engine oil level is low.
A buzzer also sounds.
 Check the level of engine oil, and add if
necessary.
This message may appear if the vehicle is
stopped on a slope.
Move the vehicle to a level surface and
check to see if the message disappears.
Warning messageDetails/Actions

4977-2. Steps to take in an emergency
7
When trouble arises
Indicates that the engine switch is turned to the
“LOCK” or “ACC” position (vehicles without a
smart key system), or off or ACCESSORY mode
(vehicles with a smart key system) and the
driver’s door is opened while the lights are turned
on.
Turn the lights off.
(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.
(If equipped)
Indicates that the Crawl Control is not available.
Select the four-wheel drive control switch
in “4L” and shift the shift lever to D or R.
(If equipped)
Indicates that the Crawl Control is not available.
Confirm the operating conditions of Crawl
Control. ( P. 318)
Warning messageDetails/Actions
(Flashes)
(Flashes)

5057-2. Steps to take in an emergency
7
When trouble arises
After taking the specified steps to correct the suspected problem,
check that the warning m essage and light go off.
Have the malfunction repaired immediately. (vehicles with a
smart key system)
Interior
buzzerExterior buzzerWarning messageDetails/Actions
Contin-
uous  The driver’s door was opened
when the shift lever was not in
P and the engine switch was
not turned off.

Shift the shift lever to P.
Contin-
uousContin-
uous
The driver’s door was opened
and closed while the elec-
tronic key was not in the vehi-
cle, the shift lever was not in P
and the engine switch was not
turned off.
Shift the shift lever to P.
 Bring the electronic key
back into the vehicle.
(Flashes)
(Displayed alternately)
(Flashes)