brake TOYOTA HILUX 2021 (in English) Repair Manual

3494-5. Using the driving support systems
4
Driving
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O When the engine is stopped by the Stop & Start system, the engine will be
restarted automatically if any of the following conditions are met:
(To enable the engine to be stopped by the Stop & Start system again, drive
the vehicle.)
• The air conditioning system is turned on. (vehicles without manual air
conditioning system)
• is turned on. (vehicles without manual air conditioning system)
• The shift lever is shifted from D or P. (vehicles with automatic transmis-
sion)
• The shift lever is shifted from P. (When the engine is stopped by the Stop
& Start system when the shift lever is in P.) (vehicles with automatic trans-
mission)
• The driver’s seat belt is unfastened.
• The driver’s door is opened.
• The driving mode is changed from normal or Eco drive mode to another
mode. (if equipped)
• The rear differential is locked. (if equipped)
• The Stop & Start cancel switch is pressed.
• The steering wheel is operated.
• The accelerator pedal is depressed. (vehicles with automatic transmis-
sion)
• The vehicle starts to roll on an incline.
O When the engine is stopped by the Stop & Start system, the engine may
restart automatically in the following situations:
(To enable the engine to be stopped by the Stop & Start system again, drive
the vehicle.)
• When the brake pedal is pumped or strongly depressed.
• When the air conditioning system is being used.
• When a switch of the air conditioning system is operated ( , etc.).
• If the battery charge becomes low.
Q When the hood is opened
O If the hood is opened while the engine is stopped by the Stop & Start sys-
tem, the engine will stall and will not be able to be restarted by the automatic
engine start function. In this case, restart the engine using the normal
engine starting procedure. ( P. 220, 223)
O If the hood is closed after the engine is started with the hood open, the Stop
& Start system will not operate. Close the hood, turn the engine switch to the
“LOCK” position*1 or off*2, wait 30 seconds or more, and then start the
engine.
*1: Vehicles without smart entry & start system
*2: Vehicles with smart entry & start system

3514-5. Using the driving support systems
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Driving
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Q Multi-information display messages
If the following situations, and a message may be displayed on the
multi-information display.
O When the engine cannot be stopped by the Stop & Start system
MessageDetails/Actions
“Press Brake
Harder to
Activate”
Vehicles with automatic transmission:
The brake pedal is not depressed enough.
 If the brake pedal is depressed further, the
system will operate.
“Non-Dedi-
cated Battery”
A non-dedicated battery for the Stop & Start sys-
tem may have been installed.
 The Stop & Start system does not operate.
Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
“Battery
Charging”
• The battery charge amount may be low.
 Engine stop is temporarily prohibited to
prioritize charging of the battery, but if the
engine is operated for a short while,
engine stop is allowed.
• A refresh charge may be occurring, such as
when the battery is undergoing a periodic
recharge, for a while after the battery terminals
have been disconnected and reconnected, for
a while after the battery has been replaced,
etc.
 After a refresh charge for up to an hour
completes, the system can be operated.
• The engine may have been started with the
hood opened.
 Close the hood, turn the engine switch to
the “LOCK” position (vehicles without
smart entry & start system) or off (vehicles
with smart entry & start system), wait 30
seconds or more, and then start the
engine.
If the message is displayed continuously (60
minutes or more), the battery may have deterio-
rated. Contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.

3524-5. Using the driving support systems
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O When the engine automatically restarts while stopped by the Stop & Start
system
“Preparing to
Operate”
• The vehicle is being driven in a high altitude
area.
• The brake booster vacuum is low.
 When the brake booster vacuum reaches a
predetermined level, the system will be
enabled.
“For Climate
Control”
Vehicles with automatic air conditioning system:
• The air conditioning system is being used
when the ambient temperature is high or low.
 If the difference between the set tempera-
ture and cabin temperature is small, the
system will be enabled.
• is on.
MessageDetails/Actions
MessageDetails/Actions
“Preparing to
Operate”
The brake pedal has been depressed further or
pumped.
 The system will be enabled after the
engine runs and the brake booster vacuum
reaches a predetermined level.
“For Climate
Control”
Vehicles with automatic air conditioning system:
• The air conditioning system has been turned
on or is being used.
• has been turned on.
“Battery
Charging”
The battery charge may be low.
 The engine is restarted to prioritize battery
charging. Operating the engine for a short
while allows the system to recover.

3544-5. Using the driving support systems
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WARNING
QWhen the Stop & Start system is operating
Make sure to disable the Stop & Start system while the vehicle is in a poorly
ventilated area.
If not disabled, the engine may be automatically restarted unexpectedly,
causing exhaust gases to collect and enter the vehicle, possibly resulting in
death or a serious health hazard.
O Do not leave the vehicle while the engine is stopped by the Stop & Start
system (while the Stop & Start indicator is on).
An accident may occur due to the automatic engine start function.
O Depress the brake pedal and apply the parking brake when necessary,
while the engine is stopped by the Stop & Start system (while the Stop &
Start indicator is on).
Q Off-road driving precaution
When driving off-road, such as driving through water, press the Stop & Start
cancel switch to disable the Stop & Start system. Failure to do so may
cause the engine to be unable to restart.
NOTICE
Q To ensure the system operates correctly
If any of the following situations occur, the Stop & Start system may not
operate correctly. Have your vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
O While the driver’s seat belt is fastened, the driver’s and front passenger’s
seat belt reminder light flashes.
O Even though the driver’s seat belt is not fastened, the driver’s and front
passenger’s seat belt reminder light does not illuminate.
O Even though the driver’s door is closed, the open door warning light is illu-
minated or the interior light is illuminated when the interior light switch is in
the door position.
O Even though the driver’s door is open, the open door warning light does
not illuminate or the interior light does not illuminate when the interior light
switch is in the door position.
Q If the engine stalls (vehicles with manual transmission)
If the Stop & Start system is enabled and the clutch pedal is depressed
quickly, the engine may restart.

355
4
4-5. Using the driving support systems
Driving
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Driving assist systems
XABS (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
XBrake assist (if equipped)
Generates an increased level of braking force after the brake pedal is
depressed when the system detects a panic stop situation
XVSC (Vehicle Stability Control) (if equipped)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces
XTRC (Traction Control) for Pre Runner and H2 position on 4WD
models (if equipped)
Helps to maintain drive power and pr event the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
XA-TRC (Active Traction Control) for H4 and L4 position on 4WD
models (if equipped)
Helps to maintain drive power and prevent the four wheels from spinning
when starting the vehicle or accelerating on slippery roads
XHill-start assist control (if equipped)
Helps to reduce the backward movement of the vehicle when starting on
an uphill
XEmergency brake signal (if equipped)
When the brakes are applied suddenly, the emergency flashers automati-
cally flash to alert the vehicle behind.
To keep driving safety and performance, the following systems
operate automatically in response to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavily when operating the vehi-
cle.

3564-5. Using the driving support systems
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XTrailer Sway Control (if equipped)
Helps the driver to control trailer sway by selectively applying brake pres-
sure for individual wheels and reducing driving torque when trailer sway is
detected.
Trailer Sway Control is part of the VSC system and will not operate if VSC
is turned off or experiences a malfunction.
The slip indicator will flash while
the TRC/A-TRC/VSC/Trailer
Sway Control systems are operat-
ing.
When the TRC/A-TRC/VSC/Trailer Sway Control systems are
operating

3584-5. Using the driving support systems
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Vehicles with AUTO LSD system
To turn the TRC/A-TRC systems
off, quickly press and release
. (The AUTO LSD system
turns on.*1)
The “AUTO LSD” and VSC OFF
indicators will come on.*2
Press again to turn the system
back on.
*1: Pre Runner and in 2WD mode on 4WD models only
*2: On vehicles with pre-collision system, pre-collision brake assist and pre-
collision braking will also be disabled until the vehicle reaches a certain
speed. The PCS warning light will come on and the message will be
shown on the multi-information display. (if equipped) ( P. 283)

3594-5. Using the driving support systems
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Driving
HILUX_OM_OM0K513E_(EE)
QTurning off TRC, A-TRC, VSC and Trailer Sway Control systems
Vehicles without multi-information display
To turn the TRC, A-TRC, VSC and Trailer Sway Control systems off, press
and hold for more than 3 seconds while the vehicle is stopped.
The “TRC OFF” indicator light and VSC OFF indicator light will come on.*
Press again to turn the system back on.
Vehicles with multi-information display
To turn the TRC, A-TRC, VSC and Trailer Sway Control systems off, press
and hold for more than 3 seconds while the vehicle is stopped.
The VSC OFF indicator light will come on and the “TRC turned off” will be
shown on the multi-information display.*
Press again to turn the system back on.
*: On vehicles with pre-collision system, pre-collision brake assist and pre-
collision braking will also be disabled. The PCS warning light will come on
and the message will be shown on the multi-information display. ( P. 283)
Q When “TRC OFF” indicator light comes on or the message is displayed
on the multi-information display sh owing that TRC/A-TRC has been dis-
abled even if has not been pressed
TRC, A-TRC and downhill assist control is temporary deactivated. If the indi-
cator light continues to remain on or the information continues to show, con-
tact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
Q Sounds and vibrations caused by the ABS, brake assist, VSC, Trailer
Sway Control, TRC, A-TRC and the hill-start assist control systems
O 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.
O 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 also 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.

3604-5. Using the driving support systems
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Q Automatic reactivation of TRC, A-TRC, VSC and Trailer Sway Control
systems
After turning the TRC, A-TRC, VSC and Trailer Sway Control systems off, the
systems will be automatically re-enabled in the following situations:
O When the engine switch is turned to the “LOCK” position (vehicles without
smart entry & start system) or off (vehicles with smart entry & start system).
O If only the TRC/A-TRC system is turned off (P. 357), the TRC/A-TRC will
turn on when vehicle speed increases.
If the TRC, A-TRC, VSC and Trailer Sway Control systems are turned off
( P. 359), automatic re-enabling will not occur when vehicle speed
increases.
Q Operating conditions of the hill-start assist control
When the following four conditions are me t, the hill-start assist control will
operate:
O Vehicles with automatic transmission: The shift lever is in a position other
than P or N (when starting off forward/backward on an upward incline)
Vehicles with manual transmission: The shift lever is in a position other than
R when starting off forward on an upward incline, or the shift lever is in R
when starting off backward on an upward incline.
O The vehicle is stopped
O The accelerator pedal is not depressed
O The parking brake is not engaged
Q Automatic system cancelation of the hill-start assist control
The hill-start assist control will turn off in any of the following situations:
O Vehicles with automatic transmission: The shift lever is shifted to P or N
Vehicles with manual transmission: The shift lever is shifted to R when start-
ing off forward on an upward incline, or the shift lever is shifted to other than
R when starting off backward on an upward incline.
O The accelerator pedal is depressed
O The parking brake is engaged
O 2 seconds at maximum elapsed after the brake pedal is released

3614-5. Using the driving support systems
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Driving
HILUX_OM_OM0K513E_(EE)
Q Operating conditions of emergency brake signal
When the following conditions are met, the emergency brake signal will oper-
ate:
O The emergency flashers are off.
O Actual vehicle speed is over 55 km/h (35 mph).
O The system judges from the vehicle deceleration that it is a sudden braking
operation.
Q Automatic system cancelation of emergency brake signal
The emergency brake signal will be canceled in any of the following situa-
tions:
O The emergency flashers are turned on.
O The system judges from the vehicle deceleration that is not a sudden brak-
ing operation.
WARNING
Q The ABS does not operate effectively when
O The limits of tire gripping performance have been exceeded (such as
excessively worn tires on a snow covered road).
O The vehicle hydroplanes while driving at high speed on wet or slick roads.
Q Stopping distance when the ABS is operating may exceed that of nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain a safe distance from the vehicle in front of you, especially in the
following situations:
O When driving on dirt, gravel or snow-covered roads
O When driving with tire chains
O When driving over bumps in the road
O When driving over roads with potholes or uneven surfaces