2020 SUBARU BRZ key battery

299
3-1. Using the air conditioning system and defogger
3
Interior features
BRZ_U
■
The defoggers can be operated when
Vehicles without a keyless access with push button start system
The engine switch is in the “ON” position.
Vehicles with a keyless access with push button start system
The push-button ignition switch is in “ON” mode.
■ The outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers on.
■ When continuous operation is set (vehicles with an automatic air con-
ditioning system)
During continuous operation, the defogger stops operating for 2 minutes
after every 15 minutes of continual operation. Even during the 2 minutes that
operation stops, the operating light remains illuminated. The rear window
defogger will continue to operate in this cycle until it is turned off.
■ Customization that can be configured at SUBARU dealer (vehicles with
an automatic air conditioning system)
The rear window defogger can be set to 15-minute operation or continuous
operation. (Customizable features →P. 518)
WARNING
■When the outside rear view mirror defoggers are on (vehicles with out-
side rear view mirror defoggers)
Do not touch the outside surface of the rear view mirrors, as they can
become very hot and burn you.
CAUTION
■To prevent battery discharge
Do not leave the rear window defogger on longer than necessary when the
engine is stopped.

303
3-3. Using the interior lights
3
Interior features
BRZ_U
Interior light
Turns the light off
Turns light on when door is
open
Turns the light on
■Illuminated entry system
Vehicles without a keyless access with push button start system
The lights automatically turn on/off according to the engine switch position,
whether the doors are locked/unlocked, and whether the doors are open/
closed.
Vehicles with a keyless access with push button start system
The lights automatically turn on/off according to push-button ignition switch
mode, the presence of the access key, whether the doors are locked/
unlocked, and whether the doors are open/closed.
■ To prevent battery discharge
If the following lights remain on when the door is not fully closed, the lights
will go off automatically after 20 minutes:
● Interior light (when the switch is in the
“DOOR” position)
● Engine switch light (vehicles without a keyless access with push button
start system)
● Push-button ignition switch light (vehicles with a keyless access with
push button start system)
● Door courtesy lights (if equipped)
■ Customization that can be configured at your SUBARU dealer
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features
→P. 518)
Interior light

311
3-5. Other interior features
3
Interior features
BRZ_U
Clock
■The clock is displayed when
Vehicles without a keyless access with push button start system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a keyless access with push button start system
The push-button ignition switch is in “ACC” or “ON” mode.
■ When disconnecting and reco nnecting battery terminals
The clock data will be reset. The clock can be adjusted by pressing the buttons.
Adjusts the hours
Adjusts the minutes
Rounds to the nearest
hour
*
*: e.g. 1:00 to 1:29 → 1:00
1:30 to 1:59 → 2:0000

313
3-5. Other interior features
3
Interior features
BRZ_U
■
The power outlet can be used when
Vehicles without a keyless access with push button start system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a keyless access with push button start system
The push-button ignition switch is in “ACC” or “ON” mode.
CAUTION
■To avoid damaging the power outlet
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short cir-
cuit.
■ To prevent the fuse from being blown
Do not use an accessory that uses more than 12 V 10 A.
■ To prevent battery discharge
Do not use the power outlet longer than necessary when the engine is not
running.

319
3-5. Other interior features
3
Interior features
BRZ_U
■
Before programming HomeLink
●Before programming HomeLink to a garage door opener or gate
operator, make sure that people and objects are out of the way
of the device to prevent potential harm or damage.
● When programming a garage door opener, it is advised to park
outside of the garage.
● Do not use HomeLink with any garage door opener that lacks
safety stop and reverse features as required by U.S. federal
safety standards (this includes any garage door opener model
manufactured before April 1, 1982). A garage door that cannot
detect an object signaling the door to stop and reverse does not
meet current U.S. federal safety standards.
● It is also recommended that a new battery be placed in the
hand-held remote (garage door opener remote) of the device for
quicker and more accurate training.
● Vehicles without a keyless access with push button start system:
Some vehicles may require the engine switch to be turned to the
“ACC” or “ON” position for programming and/or operation of
HomeLink.
● Vehicles with a keyless access with push button start system:
Some vehicles may require the push-button ignition switch to be
turned to the “ACC” or “ON” mode for programming and/or oper-
ation of HomeLink.

Maintenance and care4
331
BRZ_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior......... 332
Cleaning and protecting the vehicle interior.......... 338
Cleaning and protecting the Alcantara
® area ....... 342
4-2. Maintenance Maintenance requirements .................. 344
General maintenance....... 347
Emission inspection and maintenance (I/M)
programs........................ 350 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions .................... 351
Engine hood ..................... 354
Engine compartment ........ 356
Tires ................................. 370
Tire inflation pressure ...... 378
Wheels ............................. 382
Air conditioning filter......... 385
Transmitter/access key battery ............................ 388
Checking and replacing fuses .............................. 393
Light bulbs........................ 401

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.

366 4-3. Do-it-yourself maintenance
BRZ_U
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, before recharging:
●If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.
■ After recharging/reconnecting the battery (vehicles with a keyless
access with push button start system)
●Unlocking the doors using the keyless access with push button start sys-
tem may not be possible immediately after reconnecting the battery. If
this happens, use the remote keyless entry system or the mechanical
key to lock/unlock the doors.
● Start the engine with the push-button i gnition switch in “ACC” mode. The
engine may not start with the push-button ignition switch turned off. How-
ever, the engine will operate normally from the second attempt.
● The push-button ignition switch mode is recorded by the vehicle. If the
battery is reconnected, the vehicle will return the push-button ignition
switch mode to the status it was in before the battery was disconnected.
Make sure to turn off the engine before disconnect the battery. Take extra
care when connecting the battery if the push-button ignition switch mode
prior to discharge is unknown.
If the engine will not start even after multiple attempts, contact your
SUBARU dealer.