2020 TOYOTA TUNDRA Owners Manual (in English)

5137-2. Steps to take in an emergency
7
When trouble arises
Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, causing the tire to come
off.
Install the spare tire and loosely tighten each wheel nut by hand by
approximately the same amount.
Tighten the nuts until the taper ed portion comes into loose con tact
with the disc wheel seat.
Installing the spare tire
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2
Replacing a steel wheel with a
steel wheelReplacing an aluminum wheel
with a steel wheel
Tapered portion
Disc wheel
Tapered portion
Disc wheel

5147-2. Steps to take in an emergency
Lower the vehicle.
Firmly tighten each nut two or
three times in the order shown
in the illustration.
Tightening torque:
154 ft·lbf (209 N·m, 21.3 kgf·m)
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4
WARNING
■Stowing the flat tire
Failure to follow steps listed under stowing the tire may resul t in damage
to the spare tire carrier and loss of the tire, which could res ult in serious
injury or death.

5157-2. Steps to take in an emergency
7
When trouble arises
Vehicles with aluminum wheels: Remove the center wheel orna-
ment by pushing from the reverse side.
Lay down the tire with the valve
stem facing up and install the
holding bracket, inserting the
claw into the wheel lug nut hole.
Turn the jack handle extension
clockwise to take up slack in
the chain.
Then, check to ensure the claw is
in the wheel lug nut hole and the
holding bracket is centered in the
wheel hub.
Holding bracket
Claw
While raising, secure the tire, tak-
ing care that the tire goes straight
up without catching on any sur-
rounding part, to prevent it from
flying forward during a collision or
sudden braking.
Tightening torque:
34.7 ft·lbf (46.6 N·m, 4.8 kgf·m)
Stowing the flat tire, jack and all tools
1
incorrect
correct
O
1
2

5167-2. Steps to take in an emergency
Confirm it is not loose after
tightening:Push and pull the tire
Try rotating
Visually check to ensure tire is
not hung on surrounding parts.
If looseness or misassembly ex ists, repeat step and step .
Repeat step , any time the tire is lowered or disturbed.
Stow the tools and jack securely.
■The temporary spare tire
●The temporary spare tire is iden tified by the “TEMPORARY USE ON LY ”
marking on the disc wheel and/or tire sidewall.
Use the temporary spare tire temp orarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the temporary spare
tire. ( P. 5 4 6 )
■When reinstalling the wheel ornament (on some models)
P. 4 4 4
■When using the temporary spare tire
As the temporary spare tire is no t equipped with the tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you rep lace the
temporary spare tire after the tire pressure warning light come s on, the
light remains on.
■If you have a flat rear tire on a road covered with snow or ice
Install the temporary spare tire on one of the front wheels of the vehicle.
Perform the following steps and f it tire chains to the rear tires:
Replace a front tire with the temporary spare tire.
Replace the flat rear tire with the tire removed from the front of the
vehicle.
Fit tire chains to the rear tires.
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2
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43
5
1
2
3

5177-2. Steps to take in an emergency
7
When trouble arises
WARNING
■When using the temporary spare tire
●Remember that the temporary spare tire provided is specifically
designed for use with your vehicle. Do not use your temporary spare
tire on another vehicle.
●Do not use more than one temporary spare tires simultaneously.
●Replace the temporary spare tire with a standard tire as soon a s possi-
ble.
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-
ing operations that cause sudden engine braking.
■When the spare tire is attached
The vehicle speed may not be co rrectly detected, and the following sys-
tems may not operate correctly:
Also, not only can the following system not be utilized fully, but it may
even negatively affect the drive-train components:
• 4WD system
■Speed limit when using th e temporary spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a tem porary
spare tire is installed on the vehicle.
The temporary spare tire is not designed for driving at high sp eeds. Fail-
ure to observe this precaution ma y lead to an accident causing death or
serious injury.
• ABS & Brake assist
• VSC
•TRAC
•AUTO LSD
• Pre-Collision System*
*: If equipped • Automatic High Beam*
• LDA (Lane Departure Alert)*
• Dynamic radar cruise control*
• Cruise control*
• Navigation system*

5187-2. Steps to take in an emergency
NOTICE
■Do not drive the vehicle with a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the
wheel beyond repair.
■Driving with tire chains a nd the temporary spare tire
Do not fit tire chains to t he temporary spare tire.
Tire chains may damage the vehicle body and adversely affect dr iving
performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning
valve and transmitter, contact your Toyota dealer as the tire p ressure
warning valve and transmitter may be damaged if not handled cor rectly.
■To avoid damage to the tire pressure warning valves and transmi t-
ters
When a tire is repaired with liqui d sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sea lant is
used, contact your Toyota dealer or other qualified service shop as soon
as possible. Make sure to replac e the tire pressure warning valve and
transmitter when replacing the tire. ( P. 4 2 7 )

519
7
When trouble arises
7-2. Steps to take in an emergency
If the engine will not star t
One of the following may be the cause of the problem:
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting proc edures.
(  P. 217)
● There may be a malf unction in the engine immobilizer system.
(  P. 8 5 )
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 523)
● The battery terminal connecti ons may be loose or corroded.
The engine starting system may be malfunctioning due to an elec trical
problem such as an open circuit or a blown fuse. However, an in terim
measure is available to start the engine. ( P. 520)
If the engine will not start eve n though correct starting proce -
dures are being followed ( P. 217), consider each of the follow-
ing points.
The engine will not start even t hough the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and he ad-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart key
system)

5207-2. Steps to take in an emergency
One of the following may be the cause of the problem:
● One or both of the battery t erminals may be disconnected.
● The battery may be discharged. ( P. 523)
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is fun ctioning
normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACC.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the sy stem
may be malfunctioning. Have the vehicle inspected by your Toyot a
dealer.
The starter motor does not turn over, the interior lights and h ead-
lights do not turn on, o r the horn does not sound.
Emergency start function (vehicles with a smart key system)
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