2020 SUBARU BRZ exhaust system

161
2-1. Driving procedures
2
When driving
BRZ_U
■
After the engine starts
In order to secure a rich exhaust sound when starting the vehicle and envi-
ronmental performance, air intake and exhaust sounds become loud and
vibrations may increase for a little while after the engine starts. This is not a
malfunction.
■ Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability
of the correct fuel. ( →P. 491)
■ REV indicator
WARNING
■When starting the vehicle (vehicles with an automatic transmission)
● Always keep your foot on the brake pedal while stopped with the engine
running. This prevents the vehicle from creeping.
● Firmly depress the brake pedal because engine speed may increase
immediately after starting the engine, when the air conditioning system is
operating, when turning the steering wheel, etc., thereby causing creeping
to become stronger. Apply the parking brake as necessary.
When the set engine speed is reached
the REV indicator comes on and a buzzer
sounds to inform the driver.
(→ P. 215, 228)
(When the engine speed enters the red
zone, the REV indicator flashes regard-
less of settings.)

162 2-1. Driving procedures
BRZ_U
WARNING
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accel-
erator pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake
pedal will result in sudden acceleration that may lead to an accident
that could result in death or serious injury.
• When backing up, you may twist your body around, leading to a diffi- culty in operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle only slightly. This allows you to depress the brake and acceler-
ator pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay response in an emergency, result-
ing in an accident.
● Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot
parts may cause a fire if there is any flammable material nearby.
● On vehicles with an automatic transmission, do not let the vehicle roll
backward while the select lever is in a driving position, or roll forward while
the select lever is in R.
Doing so may cause the engine to stall or lead to poor brake and steering
performance, resulting in an accident or damage to the vehicle.
● If the smell of exhaust is noticed inside the vehicle, open the windows and
check that the trunk lid is closed. Large amounts of exhaust in the vehicle
can cause driver drowsiness and an accident, resulting in death or a seri-
ous health hazard. Have the vehicle inspected by your SUBARU dealer
immediately.
● On vehicles with a manual transmission, do not shift the shift lever to R
while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle
control.
● Do not shift the select lever to a driving position while the vehicle is moving
backward.
Doing so can damage the transmission and may result in a loss of vehicle
control.

165
2-1. Driving procedures
2
When driving
BRZ_U
WARNING
■
When the vehicle is stopped
● Do not race the engine.
If the vehicle is in any gear other than P or N (vehicles with an automatic
transmission only) or neutral (vehicles with a manual transmission), the
vehicle may accelerate suddenly and unexpectedly, causing an accident.
● Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and check that exhaust fumes do not enter the vehicle interior.
● On vehicles with an automatic transmission, in order to prevent accidents
due to the vehicle rolling away, always keep depressing the brake pedal
while the engine is running, and apply the parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.

167
2-1. Driving procedures
2
When driving
BRZ_U
WARNING
■
Exhaust gases
Exhaust gases include harmful carbon monoxide (CO), which is colorless
and odorless. Inhaling exhaust gases may lead to death or a serious health
hazard.
● If the vehicle is in a poorly ventilated area, stop the engine. In a closed
area, such as a garage, exhaust gases may collect and enter the vehicle.
This may lead to death or a serious health hazard.
● The exhaust system should be checked occasionally. If there is a hole or
crack caused by corrosion, damage to a joint or abnormal exhaust noise,
be sure to have the vehicle inspected and repaired by your SUBARU
dealer. Failure to do so may allow exhaust gases to enter the vehicle,
resulting in death or a serious health hazard.
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, you may accidentally move the select
lever or shift lever, or depress the accelerator pedal, this could cause an
accident or fire due to engine overheati ng. Additionally, if the vehicle is
parked in a poorly ventilated area, exhaust gases may collect and enter the
vehicle, leading to death or a serious health hazard.

335
4-1. Maintenance and care
4
Maintenance and care
BRZ_U
WARNING
■
When washing the vehicle
● Do not wash the engine compartment.
• Water entering the intake system will cause damage to the engine.
• Water contacting electrical components will cause malfunction of elec-
trical components and in the worst case, they may catch fire.
● When washing the vehicle, the brakes may get wet. As a result, the brake
stopping distance will be longer. To dry the brakes, drive the vehicle at a
safe speed while lightly depressing the brake pedal to heat up the brakes.
● When washing inner fenders, underbody, bumpers and protruding objects
such as exhaust pipes and exhaust finishers, be careful to prevent injuries
from contacting sharp ends.
■ Precautions regarding the exhaust pipes
Exhaust gasses cause the exhaust pipes and rear bumper diffusers to
become quite hot.
When washing the vehicle, be careful not to touch the pipes and diffusers
until they have cooled sufficiently, as touching hot exhaust pipes and rear
bumper diffusers can cause burns.

347
4-2. Maintenance
4
Maintenance and care
BRZ_U
General maintenance
Engine compartment
NOTE
SUBARU does not endorse the use of non-SUBARU approved flushing sys-
tems and strongly advises against performing these services on a SUBARU
vehicle. Non-SUBARU approved flushing systems use chemicals and/or sol-
vents which have not been tested or approved by SUBARU.
SUBARU warranties do not cover any part of the vehicle which is damaged
by adding or applying chemicals and/or solvents other than those approved
or recommended by SUBARU.
ItemsCheck points
Battery Check the connections.
(→ P. 364)
Brake fluid At the correct level? ( →P. 362)
Engine coolant At the correct level? ( →P. 360)
Engine oil At the correct level? ( →P. 357)
Exhaust system No fumes or strange sounds?
Radiator/condenser/hoses Not blocked with foreign matter?
(
→P. 362)
Washer fluid At the correct level? ( →P. 368)
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Warranty and Maintenance
Booklet” (except for Canada) or “Warranty and Service Booklet” (for
Canada). It is recommended that any problem you notice should be
brought to the attention of your SUBARU dealer or qualified service
shop for advice.

353
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■
When working in the engine compartment
● Keep hands, clothing, and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ When working near the electric cooling fans or radiator grille
Vehicles without a keyless access with push button start system: Be sure the
engine switch is off. With the engine switch in the “ON” position, the electric
cooling fans may automatically start to run if the air conditioning is on and/or
the coolant temperature is high. ( →P. 362)
Vehicles with a keyless access with push button start system: Be sure the
push-button ignition switch is off. With the push-button ignition switch in
“ON” mode, the electric cooling fans may automatically start to run if the air
conditioning is on and/or the coolant temperature is high. ( →P. 362)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.
CAUTION
■If you remove the air cleaner element
Driving with the air cleaner element removed may cause excessive engine
wear due to dirt in the air. Also a backfire could cause a fire in the engine
compartment.

422
5-1. Essential information
BRZ_U
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your SUBARU dealer as soon as
possible.
■Visible symptoms
● Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Vehicles with a monochrome multi-information display: The
engine coolant temperature gauge needle continually points
higher than normal
● Vehicles with a color multi-information display: The high
engine coolant temperature warning light flashes or illumi-
nates
■ Audible symptoms
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
● Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor