2017 TOYOTA GT86 Owners Manual (in English)

249
2-4. Using other driving systems
2
When driving
86_EE (OM18071E)
Selecting TRC mode and VSC mode
Modes can be selected to suit your driving conditions as follows:
*1: Vehicles with an automatic transmission
*2: Vehicles with a manual transmission
Driving
conditionsTRC
modesVSC modesBrake LSD functionIndicator lights
Normal roadsNormal mode Normal
mode Normal
mode 
Rough roads OffNormal
mode Normal
mode
Sport
driving “TRACK”
mode “TRACK”
mode “TRACK”
mode
Off Off “TRACK”
mode
*1
Off
*2
■ Sounds and vibrations caused by the ABS, brake assist, TRC and VSC
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.
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.

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2-4. Using other driving systems
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■
Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automati-
cally reactivated in the following situations:
●Vehicles without a smart entry & start system: When the engine switch is
turned to “LOCK” position
● Vehicles with a smart entry & start system: When the “ENGINE START
STOP” switch is turned off
● If only the TRC system is turned off, the TRC will turn on when vehicle
speed is more than approximately 50 km/h (31 mph).
If both the TRC and VSC systems are turned off, automatic reactivation
will not occur when vehicle speed increases.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steer ing input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur,
refrain from excessive steering input or stop the vehicle and turn the engine
off. The EPS system should return to normal after a little while.
■ Automatic deactivation of “TRACK” mode
Vehicles without a smart entry & start system
When the engine switch is turned to “LOCK” position after driving in
“TRACK” mode, the mode is automatically deactivated.
Vehicles with a smart entry & start system
When the “ENGINE START STOP” switch is turned off after driving in
“TRACK” mode, the mode is automatically deactivated.
■ Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal
will operate:
●The emergency flashers are off.
● Actual vehicle speed is over 60 km/h (38 mph).
● The brake pedal is depressed in a manner that cause the system to
judge from the vehicle deceleration that this is a sudden braking opera-
tion.

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2-4. Using other driving systems
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When driving
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■
Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:
●The emergency flashers are turned on.
● The brake pedal is released.
● The system judges from the vehicle deceleration that is not a sudden
braking operation.
■ Customization that can be conf igured at your Toyota dealer
Settings (e.g. emergency brake signal) can be changed.
(Customizable features →P. 487)
WARNING
■The ABS does not operate effectively when
●Tires with inadequate gripping ability are used (such as excessively worn
tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or slick roads.
■ 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 in the following situ-
ations:
●When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces
■ TRC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.

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2-4. Using other driving systems
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WARNING
■
When the VSC and/or brake LSD function is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may
cause an accident. Exercise particular care when the indicator light flashes.
■ When the TRC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to help ensure vehicle stability and driving
force, do not turn the TRC/VSC systems off unless necessary.
■ Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to the
recommended tire inflation pressure level.
The ABS, TRC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional for further information when replacing tires or
wheels.
■ Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.

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2-4. Using other driving systems
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When driving
86_EE (OM18071E)
Hill-star t assist control
Hill-start assist control helps to maintain braking force to assist
starting off forward while facing uphill or starting off backward while
facing downhill. As hill-start assist control is initially disabled,
enable the system to make it oper able. The enabled/disabled setting
will be maintained the next time the engine is started.
The hill-start assist control ON
indicator will be illuminated
when system is enabled and
flash while the system is oper-
ating.
■ Enabling hill-start assist control
Park your vehicle in a flat, safe location.
Make sure that the parking brake is securely engaged.
Stop the engine by turning the engine switch to the “LOCK”
position (vehicles without a smart entry & start system) or
turning the “ENGINE START STOP” switch off (vehicles
with a smart entry & start system).
Start the engine and check that the ABS warning light and
slip indicator are off.
Press and hold for
approximately 30 seconds.
Check that both the VSC off
indicator and “TRC OFF” indi-
cator illuminate and then turn
off.
STEP 1
STEP 2
STEP 3
STEP 4

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When enabling the hill-start assist control
●If the hill-start assist control ON indicator does not illuminate or if an
incorrect operation is performed, turn the engine switch to the “LOCK”
position (vehicles without a smart entry & start system) or turn the
“ENGINE START STOP” switch off (vehicles with a smart entry & start
system) and then restart the enabling procedure from .
● If is pressed and held for approximately 30 seconds or more, the
VSC off indicator and “TRC OFF” indicator will turn off and subsequent
operations of the switch will be rejected. In this case, the VSC system will
operate in normal mode. ( →P. 249) To enable , turn the engine
switch to the “ACC” or “LOCK” posit ion (vehicles without a smart entry &
start system) or turn the “ENGINE START STOP” switch off (vehicles
with a smart entry & start system) and then restart the engine.
Within 5 seconds after the indicator lights turn off, release
. Then, press the switch again within 2 seconds of
releasing it.
The hill-start assist control ON indicator will illuminate and then
turn off.
Turn the engine switch to the “LOCK” position (vehicles
without a smart entry & start system) or turn the “ENGINE
START STOP” switch off (vehicles with a smart entry &
start system). Then, restart the engine and check that the
hill-start assist control ON indicator is illuminated.
Hill-start assist control is enabled when the indicator is illumi-
nated.
To disable hill-start assist control, perform the above
through again.
STEP 5
STEP 6
STEP 1
STEP 6
STEP 4

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When driving
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Operating conditions of hill-start assist control
When the following conditions are met, the hill-start assist control will oper-
ate:
●Vehicles with an automatic transmission: The shift lever is in D or M
(when starting off forward on while facing uphill) or in R (when starting off
backward while facing downhill).
● Vehicles with a manual transmission: The shift lever is in a position other
than R (when starting off forward while facing uphill) or in R (when start-
ing off backward while facing downhill).
● The vehicle is stopped.
● The accelerator pedal is not depressed.
● The parking brake is not engaged.
■ Hill-start assist control will not operate when
Hill-start assist control will not operate when any of the following conditions
are met:
●Vehicles with an automatic transmission: The shift lever is in a position
other than D or M (when facing uphill) or in a position other than R (when
facing downhill).
● Vehicles with a manual transmission: The shift lever is in R (when facing
uphill) or in a position other than R (when facing downhill).
● Vehicles with an automatic transmission: The accelerator pedal is
depressed.
● The parking brake is applied.
● Vehicles with a manual transmission: The clutch is engaged.
● Approximately 2 seconds have elapsed since the brake pedal was
released.
● The hill-start assist control ON indicator is not illuminated.
● Vehicles without a smart entry & start system: The engine switch is
turned to the “ACC” or “LOCK” position.
● Vehicles with a smart entry & start system: The “ENGINE START STOP”
switch is turned to ACCESSORY mode or turned off

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Notes for hill-start assist control
●A slight jolt may be felt when starting off backward with the shift lever in R
and then moving forward.
● If the braking power of hill-start assist control is insufficient, depress the
brake pedal.
● While the vehicle is stopped, make sure to depress the brake pedal.
■ The system may be malfunctioning when
In the following situations, the system may be malfunctioning. Have the vehi-
cle inspected by your Toyota dealer.
●The slip indicator is illuminated.
● The hill-start assist control ON indicator turns off and a buzzer sounds.
WARNING
■Hill-start assist control precautions
●Do not overly rely on hill-start assist control. Hill-start assist control may
not operate effectively on steep inclines and roads covered with ice.
● Unlike the parking brake, hill-start assist control is not intended to hold the
vehicle stationary for an extended period of time. Do not attempt to use
hill-start assist control to hold the vehicle on an incline, as doing so may
lead to an accident.
● Do not stop the engine while hill-start assist control is operating, as hill-
start assist control will stop operating, possibly leading to an accident.