2018 TOYOTA TACOMA ECU

5618-2. Steps to take in an emergency
8
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. 205)
■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
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Ty p e AType B
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3
4

5638-2. Steps to take in an emergency
8
When trouble arises
NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift type
truck
● Vehicles without a smart key system:
Do not tow the vehicle from the rear when the engine switch is in the
“LOCK” position or the key is removed.
The steering lock mechanism is not strong enough to hold the front wheels
straight.
● Vehicles with a smart key system:
Do not tow the vehicle from the rear when the engine switch is off.
The steering lock mechanism is not strong enough to hold the front wheels
straight.
● When raising the vehicle, ensure adequate ground clearance for towing at
the opposite end of the raised vehicle. Without adequate clearance, the
vehicle could be damaged while being towed.
■ To prevent damage to the vehicle when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or re ar.
■ To prevent damage to the vehic le during emergency towing
Do not secure cables or chains to the suspension components.

5698-2. Steps to take in an emergency
8
When trouble arises
*3: 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” position
(vehicles without a smart key system) or IGNITION ON mode (vehi cles
with a smart key system), the buzzer sounds for 6 seconds. If t he 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 soun d intermittently
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 is sill 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.
*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. 36)
■ 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.

5708-2. 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. 5 2 4
■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.

5918-2. Steps to take in an emergency
8
When trouble arises
Once
The electronic key has a low
battery.
Replace the electronic
key battery. ( P. 537)
Once
The steering lock could not be
released within 3 seconds of
the engine switch being
pressed.
Press the engine switch
while depressing the
brake pedal and moving
the steering wheel left
and right.
Once
• When the doors were
unlocked with the mechani-
cal key and then the engine
switch was pressed, the
electronic key could not be
detected in the vehicle.
• The electronic key could not be detected in the vehicle
even after the engine switch
was pressed two consecu-
tive times.
 Touch the electronic key
to the engine switch
while depressing the
brake pedal.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)

5968-2. Steps to take in an emergency
WARNING
■Using the tire jack
Observe the following precautions.
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 jack s for
replacing tires on this vehicle.
●Put the jack properl y in its jack point.
●Do not put any part of your body under the vehicle while it is supported
by the jack.
●Do not start the engine or drive the vehicle while the vehicle is sup-
ported 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 nece ssary to get under the vehicle.
●When lowering the vehicle, make sure that there is no-one near the
vehicle. If there are people nearb y, warn them vocally before lowering.
■Using the jack handle
Insert the square head securely until you hear a click to preve nt the
extension parts from com ing apart unexpectedly.

6058-2. Steps to take in an emergency
8
When trouble arises
Remove the center wheel ornament 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 parts, to prevent it from
flying forward during a collision or
sudden braking.
Tightening torque:
27.6 ft·lbf (37.4 N·m, 3.8 kgf·m)
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.
Stowing the flat tire, jack and all tools
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incorrect
correct
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3
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6489-1. Specifications
*: Table 1  Occupant loading and distribution for vehicle normal load for
various designated seating capacities
Snow tire
A tire that attains a traction index equal to or
greater than 110, compared to the ASTM E-
1136 Standard Reference Test Tire, when
using the snow traction test as described in
ASTM F-1805-00, Standard Test Method for
Single Wheel Driving Traction in a Straight
Line on Snow-and Ice-Covered Surfaces, and
which is marked with an Alpine Symbol ( )
on at least one sidewall
Te s t r i m
The rim on which a tire is fitted for testing, and
may be any rim listed as appropriate for use
with that tire
TreadThat portion of a tire that comes into contact
with the road
Tread ribA tread section running circumferentially
around a tire
Tread separationPulling away of the tread from the tire carcass
Treadwear indicators
(TWI)The projections within the principal grooves
designed to give a visual indication of the
degrees of wear of the tread
Wheel-holding fixtureThe fixture used to hold the wheel and tire
assembly securely during testing
Tire related termMeaning
Designated seating
capacity, Number of
occupantsVehicle normal load,
Number of occupantsOccupant distribution in a normally loaded
vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
11 through 155
2 in front, 1 in second
seat, 1 in third seat, 1
in fourth seat
16 through 207
2 in front, 2 in second
seat, 2 in third seat, 1 in fourth seat