Toyota Tacoma (2018 year). Instruction - part 19
306
4-5. Using the driving support systems
Manual transmission
Before using the rear differential lock system.
1
Stop the vehicle or reduce your speed to less than 2 mph (3 km/h).
Depress the clutch pedal and turn the front-wheel drive control
switch in the “4L” position to see if this is sufficient. If this has no
effect, additionally use the rear differential lock system.
2
Be sure to stop the wheels.
3
Depress the clutch pedal.
4
Press the rear differential lock switch.
After the rear differential is locked, the indicator will come on.
Slowly release the clutch pedal.
5
Unlock the rear differential as soon as the vehicle moves.
To unlock the rear differential, press the switch again.
■Locking the rear differential
● When the rear differential is locked, VSC is automatically turned off.
(The rear differential lock and VSC off indicators come on.)
● The following systems do not operate when the rear differential is locked. It
is normal operation for the ABS warning light and VSC off indicator to be on
at this time.
• ABS
• Multi Terrain ABS (if equipped)
• Brake assist system
• VSC
• TRAC
• Pre-Collision System (if equipped)
• Dynamic radar cruise control system (if equipped)
• Cruise control system (if equipped)
• Hill-start assist control (if equipped on 4WD models)
■The rear differential lock is disengaged when
● Vehicles without a smart key system: When the engine switch is turned to
the “LOCK” position
● Vehicles with a smart key system: When the engine switch is turned off
● 4WD models only: Turn the front-wheel drive control switch to “2WD” or “4H”
position.
Never forget to turn off the switch after using this feature.
4-5. Using the driving support systems
307
■After unlocking the rear differential
Vehicles without a smart key system
To check that the indicator goes off, turn the engine switch to the “ON” posi-
tion, but do not start the engine.
Vehicles with a smart key system
To check that the indicator goes off, turn the engine switch to IGNITION ON
mode, but do not start the engine.
WARNING
■ To avoid an accident
● Do not use the rear differential lock system except when wheel spinning
occurs in a ditch or on a slippery or ragged surface. Large steering effort
and careful cornering control will be required.
● Do not lock the rear differential until the wheels have stopped spinning.
Otherwise, the vehicle may move in an unexpected direction when the dif-
ferential lock is engaged, resulting in an accident. This may also lead to
4
possible damage to differential lock component parts.
● Do not drive over 5 mph (8 km/h) when the differential is locked.
● Do not keep driving with the rear differential lock switch on.
308
4-5. Using the driving support systems
Active traction control system
The active traction control system automatically helps prevent
the spinning of 4 wheels when the vehicle is started or acceler-
ated on slippery road surfaces.
System operation
Stop the vehicle or reduce your speed to less than 2 mph (3 km/h).
1
Depress the clutch pedal and turn the front-wheel drive control
switch in the “4L” position.
Press the “A-TRAC” switch to
2
activate the system.
At this time, the “A-TRAC” indicator
will come on.
To cancel the system, press the
switch again.
When the active traction control system is operating
If four wheels spin, the slip indica-
tor flashes to indicate that the
active traction control system has
been engaged.
: If equipped
4-5. Using the driving support systems
309
■ When the rear differential is locked (vehicles with the rear differential
lock system)
The active traction control system is activated only when the vehicle speed is
less than 3 mph (6 km/h).
■Sounds and vibrations caused by the active traction control system
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in the system.
● Vibrations may be felt through the vehicle body and steering. It may occur
when the system is operating.
■ If the brake system overheats
The system will cease operation, a buzzer will sound to alert the driver. Stop
the vehicle in a safe place. (There is no problem with continuing normal driv-
ing.)
The system will be automatically restored after a short time.
WARNING
4
■ The active traction control system may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the active traction control system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
310
4-5. Using the driving support systems
Multi-terrain Select
Multi-terrain Select is a system that improves driveability in off-
road situations.
Select a mode that most closely matches the type of terrain on which
you are driving from among 5 modes.
Brake control can be optimized in accordance with the selected mode.
Multi-terrain Select switch/indicators
1
Multi-terrain Select on/off switch
2
Mode selector dial
3
Multi-terrain Select indicator
Multi-terrain Select indicator comes on when operating.
4
Mode indicator
5
Multi-information display
Displays status information including operating status and road type selec-
tion.
: If equipped
4-5. Using the driving support systems
311
Selectable modes
A mode which matches the road
conditions can be selected from
among the following 5 modes.
Position
Symbol
Mode
Road conditions
Suitable for muddy roads, sandy
roads, snow-covered roads, dirt
1
“Mud & Sand”
trails and other slippery or dirty
conditions
4
Suitable for slippery conditions
2
“Loose Rock”
consisting of mixtures of earth and
loose rock
Suitable for very bumpy road con-
3
“Mogul”
ditions, such as mogul roads
Suitable for very bumpy road con-
4
“Rock & Dirt”
ditions, such as mogul or rocky
roads
5
“Rock”
Suitable for rocky terrain
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4-5. Using the driving support systems
Selecting modes
Operate the Multi-terrain Select
mode selector dial during Multi-
terrain Select control to select a
mode.
■ The Multi-terrain Select can be operated when
● The four-wheel drive control switch is in “4L” position.
● The Crawl Control is off.
■ When using the Multi-terrain Select
The VSC system cannot be switched on or off.
A message will be shown on the multi-information display stating that this
function cannot be switched using the VSC off switch.
■ When it is difficult to generate traction
“MUD & SAND” mode provides the largest amount of tire slippage, followed
by “LOOSE ROCK”, “MOGUL”, “ROCK & DIRT” and “ROCK” mode.
If the current tires slip is too large, driveability can be improved by selecting a
mode with a smaller slip amount. Conversely, selecting a mode with a larger
slip can improve driveability, if the current tire slip is too small.
■ When the vehicle is stuck
Switching the transfer and differentials
For the operation of following function, refer to the following pages.
● Four-wheel drive system (P. 299)
●Rear differential lock (P. 305)
4-5. Using the driving support systems
313
■ When the active traction control operates continuously
P. 309
■ When the four-wheel drive control switch is in “4L” position
If the Multi-terrain Select system is not operating and the four-wheel drive
control switch is in “4L”, the “TRAC OFF” indicator will come on.
■ When there is a malfunction in the system
The slip indicator light will come on. Have the vehicle inspected by your
Toyota dealer immediately.
WARNING
■ When using Multi-terrain Select
Observe the following precautions to avoid an accident that could result in
death or serious injuries:
● There is a chance that the selected mode may not be the most appropriate
in terms of road conditions such as pitch, slipperiness, undulation, etc.
(P. 311)
4
● Multi-terrain Select is not intended to expand the limits of the vehicle.
Check the road conditions thoroughly beforehand, and drive safely and
carefully.
NOTICE
■ Precaution for use
The Multi-terrain Select is intended for use during off-road driving. Do not
use the system at any other time.
314
4-5. Using the driving support systems
Crawl Control
Allows travel on extremely rough off-road surfaces at a fixed low
speed without pressing the accelerator or brake pedal. Mini-
mizes loss of traction or vehicle slip when driving on slippery
road surfaces, allowing for stable driving.
Crawl Control switch
1
Speed selector dial
Turn the dial clockwise to increase the speed and counterclockwise to
decrease the speed.
2
Crawl Control on/off switch
The Crawl Control indicator comes on and the slip indicator flashes when
operating.
3
Crawl Control indicator
4
Slip indicator
5
Multi-information display
The operating status and speed select status of the Crawl Control are
shown on the multi-information display.
: If equipped
4-5. Using the driving support systems
315
Speed modes
The following table shows some
typical terrains and the recom-
mended speed modes.
Position
Speed mode
Road conditions
1
Low
Rock, mogul (downhill) and gravel
(downhill)
2
Between low and medium
Mogul (uphill)
4
3
Medium
Between medium and
4
Snow, mud, gravel
(uphill), sand,
high
dirt, mogul (uphill) and grass
5
High
When the system is turned off
Press the Crawl Control on/off switch while Crawl Control is operating.
If the switch is turned off, the slip indicator will turn off, the Crawl Con-
trol indicator will flash until the system has turned off completely, and
a message stating that Crawl Control has been turned off will be dis-
played on the multi-information display for several seconds.
When turning off Crawl Control while driving, stop the vehicle before
the Crawl Control indicator turns off, or drive extremely carefully.
■ Crawl Control can be operated when
● The engine is running.
● The shift lever is in any position other than P or N.
● The front-wheel drive control switch is turned to “4L”.
● The driver’s door is closed.
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4-5. Using the driving support systems
■ Automatic system cancelation
In the following situations, the buzzer will sound intermittently and Crawl Con-
trol will be canceled automatically. In this event, the Crawl Control indicator
will flash and then goes off, and a message stating that Crawl Control has
been turned off will be displayed on the multi-information display for several
seconds.
● When the shift lever is shifted to P or N
● When the front-wheel drive control switch is turned to “4H”
● When the driver’s door is opened
■ Function limitations
When the vehicle speed exceeds approximately 15 mph (25 km), engine con-
trol and brake control will stop temporarily. In this event, the Crawl Control
indicator will flash.
■ When the Crawl Control system is operated continuously
● If Crawl Control is used continuously for a long time, the buzzer will sound, a
malfunction notification will be displayed on the multi-information display,
the Crawl Control indicator goes off, and Crawl Control will be temporarily
inoperable as a result of the brake system overheating. In this event, stop
the vehicle immediately in a safe place, and allow the brake system to cool
down sufficiently until the “TRAC OFF” indicator will goes off. (In the mean-
time, normal driving is possible.)
● If Crawl Control is used continuously for a long time, the buzzer will sound,
the system will be temporarily canceled, and a malfunction notification will
be displayed on the multi-information display as a result of the automatic
transmission system overheating. Stop the vehicle in a safe place until the
display goes off.
■Sounds and vibrations caused by the Crawl Control system
● A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate
that a malfunction has occurred in Crawl Control system.
● Either of the following conditions may occur when the Crawl Control system
is operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■ When there is a malfunction in the system
Warning lights and/or warning messages will turn on. (P. 573)
4-5. Using the driving support systems
317
WARNING
■ When using Crawl Control
Do not rely solely on Crawl Control. This function does not extend the vehi-
cle’s performance limitations. Always check the terrain thoroughly and drive
safely.
■These conditions may cause the system may not operate correctly
When driving on the following surfaces, the system may not be able to
maintain a fixed low speed, which may result in an accident:
● Extremely steep inclines
● Extremely uneven surfaces
● Snow-covered roads, or other slippery surfaces
4
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4-5. Using the driving support systems
Clutch start cancel switch
The switch allows the vehicle to be driven out of difficult situa-
tions by cranking the engine with the clutch engaged.
Never use the switch for normal engine starting. Be sure to follow the
starting procedure. (P. 193)
Press the “CLUTCH START CAN-
CEL” switch to cancel the clutch
start system when the engine
switch is turned
to the “ON” posi-
tion.
The indicator comes on when the
clutch start system is canceled.
The clutch start cancel switch is
automatically turned off when the
engine switch is turned off.
■ Clutch start system
The system is designed to keep the starter motor from operating if the clutch
pedal is not depressed all the way down.
: If equipped
4-5. Using the driving support systems
319
Driving assist systems
To help enhance driving safety and performance, the following
systems operate automatically in response to various driving
situations. Be aware, however, that these systems are supple-
mentary and should not be relied upon too heavily when operat-
ing the vehicle.
◆ ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly,
or if the brakes are applied while driving on a slippery road surface
◆ Multi Terrain ABS (Anti-lock Brake System) (if equipped)
Helps to prevent wheel lock when the brakes are applied suddenly,
4
or if the brakes are applied while driving on a slippery road surface,
or in off-road conditions (such as rough roads, sand and mud)
◆ Brake assist
Generates an increased level of braking force after the brake pedal
is depressed when the system detects a panic stop situation
◆ VSC (Vehicle Stability)
Helps the driver to control skidding when swerving suddenly or
turning on slippery road surfaces
◆ Trailer Sway Control (if equipped)
Helps the driver to control trailer sway by selectively applying brake
pressure for individual wheels and reducing engine torque when
trailer sway is detected.
Trailer Sway Control is part of the VSC system and will not operate if
VSC system is turned off or experiences a malfunction.
◆ TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from
spinning when starting the vehicle or accelerating on slippery roads
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4-5. Using the driving support systems
◆ Hill-start assist control (if equipped)
Helps to prevent the vehicle from rolling backward when starting on
an incline or slippery slope
When the TRAC/VSC/Trailer Sway Control/hill-start assist control
systems are operating
The slip indicator light will flash
while the TRAC/VSC/Trailer Sway
Control/hill-start assist control*
systems are operating.
*: If equipped with Multi-terrain Select/
Crawl Control.
Disabling the TRAC/VSC/Trailer Sway Control systems (2WD
models and 2WD mode on 4WD models)
If the vehicle gets stuck in fresh snow or mud, TRAC/VSC/Trailer
Sway Control systems may reduce power from the engine to the
wheels. You may need to turn the system off to enable you to rock the
vehicle in order to free it.
■ Turning off TRAC (turn on the AUTO LSD system)
P. 303
■ Turning off TRAC, VSC and Trailer Sway Control
Press and hold the VSC off
switch for more than 3 seconds
while the vehicle is stopped to
turn off TRAC, VSC and Trailer
Sway Control.
The VSC off and “TRAC OFF”
indicators will come on.
Press the switch again to turn
the system back on.
4-5. Using the driving support systems
321
Disabling the TRAC/VSC/Trailer Sway Control systems (4WD
mode on 4WD models)
If the vehicle gets stuck in fresh snow or mud, TRAC/VSC/Trailer
Sway Control systems may reduce power from the engine to the
wheels. You may need to turn the system off to enable you to rock the
vehicle in order to free it.
■ Turning off TRAC
Quickly press and release the
VSC off switch to turn off
TRAC.
The “TRAC OFF” indicator will
come on.
Press the switch again to turn
the system back on.
4
■ Turning off TRAC, VSC and Trailer Sway Control
Press and hold the VSC off
switch for more than 3 seconds
while the vehicle is stopped to
turn off TRAC, VSC and Trailer
Sway Control.
The VSC off and “TRAC OFF”
indicators will come on.
Press the switch again to turn
the system back on.
■When the “TRAC OFF” indicator light comes on even if the VSC off
switch has not been pressed
TRAC and hill-start assist control cannot be operated. Contact your Toyota
dealer.
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4-5. Using the driving support systems
■ Sounds and vibrations caused by the ABS, Multi Terrain ABS, brake
assist, VSC, TRAC and Trailer Sway Control systems
● A sound may be heard from the engine compartment when the brake pedal
is depressed repeatedly, when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■ Automatic reactivation of TRAC, VSC and Trailer Sway Control systems
after turning off the engine
Turning off the engine after turning off the TRAC, VSC and Trailer Sway Con-
trol systems will automatically reactivate them.
■ Automatic reactivation of TRAC system (AUTO LSD mode)
With AUTO LSD mode, VSC off and “AUTO LSD” indicator lights turn on.
The VSC and TRAC systems will turn on when the vehicle speed increases.
■ Automatic reactivation of TRAC, VSC and Trailer Sway Control systems
If the TRAC, VSC and Trailer Sway Control systems are turned off, automatic
reactivation will not occur when vehicle speed increases
■ If the brake system overheats
TRAC will cease operation and a buzzer will sound to alert the driver. Stop
the vehicle in a safe place. (There is no problem with continuing normal driv-
ing.)
■When the VSC or TRAC system is turned off by pressing the VSC off
switch
On vehicles with pre-collision system, pre-collision brake assist and pre-colli-
sion braking will also be disabled. The PCS warning light will come on and
the message will be shown on the multi-information display. (→P. 585)
■ Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will
operate:
● The shift lever is in a position other than P or N (when starting off forward/
backward on an upward incline).
● The vehicle is stopped.
● The accelerator pedal is not depressed.
● The parking brake is not engaged.