TOYOTA GT86 2017 1.G Owners Manual

181
2-4. Using other
driving systems
2
When driving
■Cruise control can be set when
Vehicles with an automatic transmission
●The shift lever is in D or M and the vehicle is in the 2
nd gear or higher.
● Vehicle speed is above approximately 25 mph (40 km/h).
Vehicles with a manual transmission
● The vehicle is in the 2
nd gear or higher.
● Vehicle speed is above approximately 25 mph (40 km/h).
■ Canceling and resuming the constant speed control
Pulling the lever toward you
cancels the constant speed
control.
The speed setting is also can-
celed when the brakes are
applied or the clutch pedal
(manual transmission only) is
depressed.
Pushing the lever up
resumes the constant
speed control.
Resuming is available when
the vehicle speed is more
than approximately 20 mph
(30 km/h).

182 2-4. Using other driving systems
■Accelerating after setting the vehicle speed
●The vehicle can be accelerated normally. After acceleration, the set
speed resumes.
● Even without canceling the cruise control, the set speed can be
increased by first accelerating the vehicle to the desired speed and then
pushing the lever down to set the new speed.
■ Automatic cruise control cancelation
Cruise control will stop maintaining the vehicle speed in any of the following
situations.
●Actual vehicle speed is below approximately 20 mph (30 km/h).
● VSC is activated.
■ 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 cruise control indicator light comes on in yellow.
● The cruise control indicator does not come on even when the “ON-OFF”
button is pressed while the engine is running.

183
2-4. Using other
driving systems
2
When driving
WARNING
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON-OFF” button when not in use.
■ Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of control and could cause an accident resulting
in death or serious injury.
●In heavy traffic
● On roads with sharp bends
● On winding roads
● On slippery roads, such as those covered with rain, ice or snow
● On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
● During emergency towing

184
2-4. Using other driving systems
Driving assist systems
To help enhance driving safety and performance, the following sys-
tems operate automatically in res ponse to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too h eavily when operating 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
■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 Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces
■TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads.
The TRAC system is also equipped with the brake LSD function.
■Hill-start assist control
→
P. 191
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel

185
2-4. Using other
driving systems
2
When driving
When the TRAC/VSC systems are operating
The slip indicator light will flash
while the TRAC (brake LSD
function)/VSC systems are oper-
ating.
Disabling the TRAC systemIf the vehicle gets stuck in mud, dirt or snow, the TRAC system may
reduce power from the engine to the wheels. Pressing to turn
the system off may make it easier for you to rock the vehicle in order
to free it.
In this case, the brake LSD function remains on. To turn the TRAC system off,
quickly press and release the
button.
The “TRAC OFF” indicator light
will come on.
Press the button again to turn the
system back on.

186 2-4. Using other driving systems
“TRACK” modeYour vehicle is equipped with two types of control modes to accom-
modate various driving prefer ences. The control modes can be
selected with the “TRACK” switch. Normal mode allows secure and
smooth normal driving. When t he switch is pressed and held for 1
second or more, “TRACK” mode is activated. Control characteristics
such as the VSC and TRAC are adjusted to afford maneuverability
closer to what a driver may desire, while a sense of security is
retained.
“TRACK” mode/Normal mode
The “TRACK” indicator and VSC
off indicator come on when in
“TRACK” mode.
To change back to normal mode
while in “TRACK” mode, press
or the “TRACK” switch.
Turning off both TRAC and VSC systemsTo turn the TRAC and VSC systems off, press and hold for
more than 3 seconds while the vehicle is stopped.
The “TRAC OFF” indicator light and the VSC off indicator light will
come on.
However, on vehicles with an aut omatic transmission, the brake LSD
function will remain on.
Press the button again to tu rn the systems back on.

187
2-4. Using other
driving systems
2
When driving
Selecting TRAC 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
conditionsTRAC
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

188 2-4. Using other driving systems
■Sounds and vibrations caused by the ABS, brake assist, TRAC 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.
■ Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automati-
cally reactivated in the following situations:
●When the engine switch is turned to “LOCK” position
● If only the TRAC system is turned off, the TRAC will turn on when vehicle
speed is more than approximately 31 mph (50 km/h).
If both the TRAC and VSC systems are turned off, automatic reactivation
will not occur when vehicle speed increases.

189
2-4. Using other
driving systems
2
When driving
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering 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
When the engine switch is turned to “LOCK” position after driving in
“TRACK” mode, the mode is automatically deactivated.
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
■ TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slip-
pery road surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■ 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.

190 2-4. Using other driving systems
WARNING
■When the TRAC/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 TRAC/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, TRAC and VSC systems will not function correctly if different tires
are installed on the vehicle.
Contact your Toyota dealer 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.