2017 SUBARU BRZ Owners Manual

255 2-4. Using other driving systems
2
When driving
■Turning off both TRAC and Vehicle stability control (VSC) systems
To turn the TRAC and Vehicle stability control (VSC) systems off, press and
hold for more than 3 seconds while the vehicle is stopped.
The Traction Control System OFF indicator light and the Vehicle stability
control (VSC) off indicator light will come on.
However, on vehicles with an automatic transmission, the brake LSD func-
tion will remain on.
Press the button again to turn the systems back on.
■Automatic reactivation of TRAC and Vehicle stability control (VSC) sys-
tems
After turning the TRAC and Vehicle stability control (VSC) systems off, the
systems will be automatically reactivated in the following situations:
●Vehicles without a keyless access with push button start system: When
the engine switch is turned to “LOCK” position
●Vehicles with a keyless access with push button start system: When the
push-button ignition switch is turned off
●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 Vehicle stability control (VSC) systems are turned
off, automatic reactivation will not occur when vehicle speed increases.
■Automatic deactivation of “TRACK” mode
Vehicles without a keyless access with push button start system
When the engine switch is turned to “LOCK” position after driving in
“TRACK” mode, the mode is automatically deactivated.
Vehicles with a keyless access with push button start system
When the push-button ignition switch is turned off after driving in “TRACK”
mode, the mode is automatically deactivated.
■Sounds and vibrations caused by the ABS, brake assist, TRAC and
Vehicle stability control (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.

256 2-4. Using other driving 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.
■Electric power steering operation sound
When the steering wheel is operated, a motor sound (whirring sound) may
be heard. This does not indicate a malfunction.
■Reduced effectiveness of the electric power steering system
The effectiveness of the electric power steering system is reduced to pre-
vent 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 electric power steering system should return to
normal after a little while.
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

257 2-4. Using other driving systems
2
When driving
WARNING
■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 Vehicle stability control (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 TRAC/Vehicle stability control (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/Vehicle stability control (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 Vehicle stability control (VSC) systems will not function
correctly if different tires are installed on the vehicle.
Contact your SUBARU 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.

258
2-4. Using other driving systems
Hill star t assist
The hill start assist system helps to maintain braking force to assist
starting off forward while facing uphill or starting off backward while
facing downhill. As the hill start assist system is initially disabled,
enable the system to make it operable. The enabled/disabled setting
will be maintained the next time the engine is started.
When the system is enabled,
the hill start assist ON indica-
tor will be illuminated.
■Enabling the hill start assist system
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 keyless access with push but-
ton start system) or turning the push-button ignition switch
off (vehicles with a keyless access with push button 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 Vehicle
stability control (VSC) off indi-
cator and Traction Control Sys-
tem OFF indicator illuminate
and then turn off.
STEP 1
STEP 2
STEP 3
STEP 4

259 2-4. Using other driving systems
2
When driving
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 ON indicator will illuminate and then turn off.
Turn the engine switch to the “LOCK” position (vehicles
without a keyless access with push button start system) or
turn the push-button ignition switch off (vehicles with a key-
less access with push button start system). Then, restart
the engine and check that the hill start assist ON indicator
is illuminated.
The hill start assist system is enabled when the indicator is illumi-
nated.
To disable the hill start assist system, perform the above
through again.
STEP 5
STEP 6
STEP 1
STEP 6

260 2-4. Using other driving systems
■When enabling the hill start assist system
●If the hill start assist ON indicator does not illuminate or if an incorrect
operation is performed, turn the engine switch to the “LOCK” position
(vehicles without a keyless access with push button start system) or turn
the push-button ignition switch off (vehicles with a keyless access with
push button start system) and then restart the enabling procedure from
.
●If is pressed and held for approximately 30 seconds or more, the
Vehicle stability control (VSC) off indicator and Traction Control System
OFF indicator will turn off and subsequent operations of the switch will be
rejected. In this case, the Vehicle stability control (VSC) system will oper-
ate in normal mode. (oP. 254) To enable , turn the engine switch to
the “ACC” or “LOCK” position (vehicles without a keyless access with
push button start system) or turn the push-button ignition switch off (vehi-
cles with a keyless access with push button start system) and then
restart the engine.
■Operating conditions of the hill start assist system
When the following conditions are met, the hill start assist system will oper-
ate:
●Vehicles with an automatic transmission: The select 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.
STEP 4

261 2-4. Using other driving systems
2
When driving
■The hill start assist system will not operate when
The hill start assist system will not operate when any of the following condi-
tions are met:
●Vehicles with an automatic transmission: The select 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 ON indicator is not illuminated.
●Vehicles without a keyless access with push button start system: The
engine switch is turned to the “ACC” or “LOCK” position.
●Vehicles with a keyless access with push button start system: The push-
button ignition switch is turned to “ACC” mode or turned off.
■Notes for the hill start assist system
●A slight jolt may be felt when starting off backward with the select lever in
R (vehicles with an automatic transmission) or the shift lever in R (vehi-
cles with a manual transmission) and then moving forward.
●If the braking power of the hill start assist system 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 SUBARU dealer.
●The slip indicator is illuminated.
●The hill start assist ON indicator turns off and a buzzer sounds.

262 2-4. Using other driving systems
WARNING
■Hill start assist system precautions
●Do not overly rely on the hill start assist system. The hill start assist system
may not operate effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, the hill start assist system is not intended to hold
the vehicle stationary for an extended period of time. Do not attempt to use
the hill start assist system to hold the vehicle on an incline, as doing so
may lead to an accident.
●Do not stop the engine while the hill start assist system is operating, as the
hill start assist system will stop operating, possibly leading to an accident.