wheel TOYOTA GT86 2014 Service Manual

175 2-1. Driving procedures
2
When driving
When the steering lock cannot be released
Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
When the smart entry & start system indicator light flashes in yellow
The system may be malfunctioning. Have the vehicle inspected by any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional immediately.
If the electronic key battery is depleted
P. 331
If the smart entry & start system has been deactivated in a customized
setting
P. 415
Immediately after reconnecting the battery terminals due to replacing
the battery and so forth
The engine may not start. If this occurs, turn the “ENGINE START STOP”
switch to IGNITION ON mode, and start the engine after waiting at least 10
seconds. Idling may be unstable immediately after the engine starts, how-
ever, this is not a malfunction.
The smart entry & start system indicator
light (green) will flash quickly.
Vehicles with an automatic transmis-
sion
Check that the shift lever is set in P. Press
the “ENGINE START STOP” switch while
turning the steering wheel left and right.
Vehicles with a manual transmission
Press the “ENGINE START STOP” switch
while turning the steering wheel left and
right.

176 2-1. Driving procedures
CAUTION
When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress
the accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
If the smart entry & start system indicator light flashes in green after the
engine has started, never drive the vehicle. The steering wheel is still
locked, and it may result in an accident.
Caution while driving
If engine failure occurs while the vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the
steering lock in this circumstance may lead to an accident, resulting in death
or serious injury.
Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle,
press and hold the “ENGINE START STOP” switch for more than 2 seconds,
or press it briefly 3 times or more in succession. (P. 428)
However, do not touch the “ENGINE START STOP” switch while driving
except in an emergency. Turning the engine off while driving will not cause
loss of steering or braking control, but the power assist to these systems will
be lost. This will make it more difficult to steer and brake, so you should pull
over and stop the vehicle as soon as it is safe to do so.

178
2-1. Driving procedures
Engine (ignition) switch (vehicles without a smar t entr y & star t system)
Starting the engine
Vehicles with an automatic transmission
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
Turn the engine switch to the “START” position to start the
engine.
Vehicles with a manual transmission
Check that the parking brake is set.
Check that the shift lever is set in N.
Firmly depress the clutch pedal.
Turn the engine switch to the “START” position to start the
engine.
Changing the engine switch positions
“LOCK”
The steering wheel is locked
and the key can be removed.
(Vehicles with an automatic
transmission: The key can be
removed only when the shift
lever is in P.)
“ACC”
Some electrical components
such as the power outlet can
be used.
“ON”
All electrical components can
be used.
“START”
For starting the engine.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 1
STEP 2
STEP 3
STEP 4

179 2-1. Driving procedures
2
When driving
Turning the key from “ACC” to “LOCK”
Shift the shift lever to N (manual transmission) or P (automatic
transmission). (P. 181, 188)
If the engine does not start
The engine immobilizer system may not have been deactivated. (P. 91)
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
When the steering lock cannot be released
Key reminder function
A buzzer sounds if the driver’s door is opened while the engine switch is in
the “LOCK” or “ACC” position to remind you to remove the key.
Immediately after reconnecting the battery terminals due to replacing
the battery and so forth
The engine may not start. If this occurs, turn the engine switch to the “ON”
position, and start the engine after waiting at least 10 seconds. Idling may be
unstable immediately after the engine starts, however, this is not a malfunc-
tion.
STEP 1
Push in the key and turn to the “LOCK”
position.STEP 2
When starting the engine, the engine
switch may seem stuck in the “LOCK”
position. To free it, turn the key while turn-
ing the steering wheel slightly left and
right.

193
2-1. Driving procedures
2
When driving
Horn
After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
The horn may not sound if the steering wheel is not securely locked.
(P. 78)
To sound the horn, press on or
close to the mark.

225
2-4. Using other driving systems
2
When driving
Driving assist systems
When the TRC/VSC systems are operating
The slip indicator light will flash
while the TRC (brake LSD func-
tion)/VSC systems are operat-
ing.
To help enhance driving safety and performance, the following sys-
tems 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 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
TRC (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 TRC system is also equipped with the brake LSD function.
EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel

226 2-4. Using other driving systems
Disabling the TRC system
If the vehicle gets stuck in mud, dirt or snow, the TRC 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 TRC system off,
quickly press and release the
button.
The “TRC OFF” indicator light will
come on.
Press the button again to turn the
system back on.
“VSC SPORT” mode
Your vehicle is equipped with two types of control modes to accom-
modate various driving preferences. The control modes can be
selected with the “VSC SPORT” mode switch. Normal mode allows
secure and smooth normal driving. When the switch is pressed, “VSC
SPORT” mode is activated. Control characteristics such as the VSC
and TRC are adjusted to afford maneuverability closer to what a
driver may have imagined, while a sense of security is retained.
“VSC SPORT” mode/Normal
mode
The “VSC SPORT” indicator and
VSC off indicator come on when
in “VSC SPORT” mode.

228 2-4. Using other driving systems
Turning off both TRC and VSC systems
To turn the TRC and VSC systems off, press and hold for more than 3
seconds while the vehicle is stopped.
The “TRC OFF” indicator light and the VSC off indicator light will come on.
In this case, the brake LSD function remains on.
Press the button again to turn the systems back on.
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.
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.

229 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 “VSC SPORT” mode
Vehicles without a smart entry & start system
When the engine switch is turned to “LOCK” position after driving in “VSC
SPORT” 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 “VSC
SPORT” mode, the mode is automatically deactivated.
CAUTION
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.

230 2-4. Using other driving systems
CAUTION
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.