stop start TOYOTA HILUX 2021 (in English) Service Manual

3474-5. Using the driving support systems
4
Driving
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When the engine is stopped by the Stop & Start system when the
vehicle is on an incline, when the brake pedal is released, brake force
is temporarily maintained to prevent the vehicle from rolling back-
wards before the engine is restarted and drive force is generated.
When drive force is generated, the maintained brake force is automat-
ically canceled.
O This function operates on flat surfaces as well as steep inclines.
O Sound may be generated from the brake system, but this does not
indicate a malfunction.
O Brake pedal response may change and vibration may occur, but
this does not indicate a malfunction.
Q Points for use
O If the engine switch is pressed when the engine is stopped by the Stop &
Start system, the engine 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 When the engine is being restarted by the Stop & Start system, the power
outlets may be temporarily unusable, but this does not indicate a malfunc-
tion.
O Installation and removal of electrical components and wireless devices may
affect the Stop & Start system. Contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer for details.
O When stopping the vehicle for a longer period of time, turn the engine switch
to the “LOCK” position*1 or off*2 to stop the engine completely.
O When the engine is restarted by the Stop & Start system, the steering wheel
may temporarily feel heavy.
O 4WD models only: While driving in L4 mode, it is recommended that the
Stop & Start system be canceled because the system may not operate prop-
erly.
*1: Vehicles without smart entry & start system
*2: Vehicles with smart entry & start system
Hill-start assist control (vehicles with automatic transmission)

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Q Operating conditions
O The Stop & Start system is operational when all of the following conditions
are met:
• The vehicle has been driven a certain amount of time.
• The brake pedal is being depressed firmly. (vehicles with automatic trans-
mission)
• The clutch pedal is not depressed. (vehicles with manual transmission)
• The D shift position is selected. (v ehicles with automatic transmission)
• The shift lever is in N. (vehicles with manual transmission)
• The driver’s seat belt is fastened.
• The driver’s door is closed.
• The selected driving mode is normal or Eco drive mode. (if equipped)
• The rear differential is not locked. (if equipped)
• is off. (vehicles without manual air conditioning system)
• The accelerator pedal is not being depressed. (vehicles with automatic
transmission)
• The engine is adequately warmed up.
• The outside temperature is -5°C (23°F) or higher.
• The hood is closed. ( P. 349)
O In the following situations, the engine may not be stopped by the Stop &
Start system. This is not a malfunction of the Stop & Start system.
• When the air conditioning system is being used.
• When the battery is undergoing a periodic recharge.
• When the battery is not sufficiently charged, such as if the vehicle has
been parked for a long time and the battery charge has decreased, the
electric load is large, the battery fluid temperature is excessively low or
the battery has deteriorated.
• When the brake booster vacuum is low.
• When the elapsed time since the engine was restarted is short.
• When the vehicle is stopped frequently, such as when in a traffic jam.
• When the engine coolant temperature or transmission fluid temperature
is extremely low or high.
• When the vehicle is stopped on a steep incline. (vehicles with automatic
transmission)
• When the steering wheel is being operated.
• When the vehicle is being driven in a high altitude area.
• When the battery fluid temperature is extremely low or high.
• For a while after the battery terminals have been disconnected and
reconnected.

3494-5. Using the driving support systems
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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

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Q Air conditioning system operation while the engine is stopped by the
Stop & Start system
Vehicles with an automati c air conditioning system: When the air conditioning
is in automatic mode and the engine is stopped by the Stop & Start system,
the fan may operate at a low speed in order to prevent the temperature in the
cabin from increasing or decreasing or may be stopped.
To prioritize air conditioning system performance when the vehicle is stopped,
disable the Stop & Start system by pressing the Stop & Start cancel switch.
O If the windshield is fogged up
Turn on. (P. 443)
If the windshield fogs up frequently, press the Stop & Start cancel switch to
disable the Stop & Start system.
O If an odor is emitted from the air conditioning system
• Vehicles with manual air conditioning system:
If the idling stop time setting is set to “Extended” change it to “Standard”.
If an odor is emitted when the idling stop time setting is set to “Standard”,
press the Stop & Start cancel switch to deactivate the Stop & Start sys-
tem.
• Vehicles with automatic air conditioning system:
Press the Stop & Start cancel switch to deactivate the Stop & Start sys-
tem.
Q Changing the idling stop time with the air conditioning system on
The length of time the Stop & Start system will operate when the air condition-
ing system is on can be changed in of the multi-information display
( P. 646). (The length of time the Stop & Start system will operate when the
air conditioning system is off cannot be changed.)
Q Displaying the Stop & Start system status
 P. 141

3514-5. Using the driving support systems
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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.

3534-5. Using the driving support systems
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Q When the buzzer sounds (vehicles with automatic transmission)
If the driver’s door is opened when the engine is stopped by the Stop & Start
system and the shift lever is in D, a buzzer will sound and the Stop & Start
system indicator will flash. To stop the buzzer, close the driver’s door.
Q The Stop & Start system protection function
O When the volume of the audio system is excessively high, sound output
from the audio system may suddenly be cut off in order to reduce battery
consumption. To prevent the audio system from being cut off, keep the vol-
ume of audio system at a moderate level. If the audio system has been cut
off, turn the engine switch to the “LOCK” position*1 or off*2, wait for 3 sec-
onds or more and then turn it to the “ACC” position*1 or ACCESSORY
mode*2 or the “ON” position*1 or IGNITION ON mode*2 to re-enable the
audio system.
O The audio system may not be activated if the battery terminals are discon-
nected and then reconnected. If this occurs, turn the engine switch to the
“LOCK” position*1 or off*2 and then repeat the following operation twice to
activate the audio system normally.
• Turn the engine switch to the “ON” position*1 or IGNITION ON mode*2
and then to the “LOCK” position*1 or off*2.
*1: Vehicles without smart entry & start system
*2: Vehicles with smart entry & start system
Q Replacing the battery
 P. 607
Q If the Stop & Start cancel indicator flashes continuously
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
Q If “Stop & Start System Malfunction Visit Your Dealer” is displayed on
the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.

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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.

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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.

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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.