battery SUBARU BRZ 2018 Service Manual

368 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
BatteryCheck the battery as follows.
■ Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Hold-down clamp
Te r m i n a l s
■ Checking battery fluid
Check that the level is between
“UPPER LEVEL” and “LOWER
LEVEL”.
“UPPER LEVEL”
“LOWER LEVEL”
If the fluid level is at or below
“LOWER LEVEL”, add distilled
water.

370 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
■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.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
WARNING
■
Chemicals in the battery
A battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death
or serious injury, take the following precautions while working on or near the
battery:
● Do not cause sparks by touching the battery terminals with tools.
● Do not smoke or light a match near the battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the battery.
● Keep children away from the battery.
■ Where to safely charge the battery
Always charge the battery in an open area. Do not charge the battery in a
garage or closed room where there is not sufficient ventilation.
■ Emergency measures re garding electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.

372 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Washer fluidIf the washer fluid level is at
“LOW”, add washer fluid.
CAUTION
■When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.
■ When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.
■Using the gauge
The washer fluid level can be checked by
observing the position of the level on the
liquid-covered holes in the gauge.
If the level falls below the second hole
from the bottom (the “LOW” position),
refill the washer fluid.
CTH43AS134
Current
fluid level

392
4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Transmitter/access key batter y
Replace the battery with a new one if it is depleted.
■You will need the following items:
● Flathead screwdriver
● Lithium battery CR2016 (vehicles without a keyless access
with push button start system), or CR2032 (vehicles with a
keyless access with push button start system)
■ Replacing the battery (vehicles without a keyless access
with push button start system)
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
To prevent the buttons from
being disassembled, face the
button surface downward.
Remove the module.
STEP1
STEP2

393
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
Open the case cover using a
coin protected with tape and
remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
■
Replacing the battery (vehicles with a keyless access with
push button start system)
Take out the mechanical key.
Insert the tip of a flathead
screwdriver into the groove
and remove the cover.
To prevent damage to the key,
wrap the tip of the screwdriver
with protective tape.
STEP3
STEP1
STEP2Groove

394 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Remove the depleted battery.
To prevent damage to the key,
wrap the tip of the screwdriver
with protective tape.
Install a new battery with the
“+” terminal facing up, as
shown in the illustration.
Align the protruding part with
the slot and install the cover.
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
■
Use a CR2016 (vehicles without a keyless access with push button
start system) or CR2032 (vehicles with a keyless access with push but-
ton start system) lithium battery
● Batteries can be purchased at your SUBARU dealer, local electrical
appliance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The keyless access with push button start system (if equipped) and
remote keyless entry system will not function properly.
● The operational range will be reduced.
■ When putting the module back (vehicles without a keyless access with
push button start system)
WARNING
■Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.
Insert the module from directly above.
Inserting it on an angle may prevent the
key buttons from operating properly.

396 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
CAUTION
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.
■ Precaution before replacing the battery
Before replacing the battery, touch a metallic object to remove any static
electricity from your body.

When trouble arises5
417
BRZ_U (A4450BE-A)
5-1. Essential informationHazard warning flashers .......................... 418
If your vehicle needs to be towed ........................ 419
If you think something is wrong ............................. 426
Fuel pump shut off system ........................... 427
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 428
If a warning message is displayed........................ 440
If you have a flat tire......... 457
If the engine will not start ................................ 471 If the select lever cannot
be shifted from P ............ 474
If you lose your keys ........ 475
If the access key does not operate properly....... 476
If the battery is discharged ..................... 480
If your vehicle overheats ....................... 485
If the vehicle becomes stuck .............................. 488