2017 SUBARU BRZ battery

392
5-1. Essential information
Hazard war ning flashers
■Hazard warning flashers
If the hazard warning flashers are used for a long time while the engine is
not operating, the battery may discharge. The hazard warning flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.
Press the switch.
All the turn signal lights will
flash. To turn them off, press
the switch once again.

444
5-2. Steps to take in an emergency
If the engine will not star t
If the engine will not start even though correct starting procedures
are being followed (oP. 169, 178), consider each of the following
points.
■The engine will not start even when the starter motor oper-
ates normally.
One of the following may be the cause of the problem.
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. (oP. 169, 178)
●There may be a malfunction in the engine immobilizer system.
(oP. 80)
■The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem.
●The battery may be discharged. (oP. 453)
●The battery terminal connections may be loose or corroded.
■The starter motor does not turn over. (vehicles with a key-
less access with push button start system)
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine.
(oP. 445)

5
When trouble arises
445 5-2. Steps to take in an emergency
Emergency start function (vehicles with a keyless access with
push button start system)
When the engine does not start, the following steps can be used as
an interim measure to start the engine if the push-button ignition
switch is functioning normally:
Vehicles with an automatic transmission
Set the parking brake.
Put the select lever in P.
Set the push-button ignition switch to “ACC” mode.
Press and hold the push-button ignition switch about 15 sec-
onds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the vehicle checked by your SUBARU
dealer.
■The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. (oP. 453)
●There may be a malfunction in the steering lock system. (vehi-
cles with a keyless access with push button start system)
Contact your SUBARU dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3
STEP 4

5
When trouble arises
449
5-2. Steps to take in an emergency
If the access key does not operate properly (vehicles with a keyless access with push button star t system)
Unlocking and locking the doors, unlocking the trunk lid
Use the mechanical key built in to the access keys to operate the
doors and trunk lid. (oP. 2 3 )
The mechanical key is directional. If the key cannot be inserted,
change the direction that the grooved side is facing and insert it
again.
Vehicles with an alarm: An alarm will sound if the alarm is set when the
trunk lid or doors are unlocked. (oP. 85)
Doors
Locks driver’s door
Unlocks driver’s door
If communication between the access key and vehicle is interrupted
(oP. 31) or the access key cannot be used because the battery is
depleted, the keyless access with push button start system and
remote keyless entry system cannot be used. In such cases, the
doors and trunk lid can be opened or the engine can be started by
following the procedure below.

452 5-2. Steps to take in an emergency
■Stopping the engine
Vehicles with an automatic transmission: Shift the select lever to P and press
the push-button ignition switch as you normally do when stopping the
engine.
Vehicles with a manual transmission: Shift the shift lever to neutral and press
the push-button ignition switch as you normally do when stopping the
engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
access key battery be replaced immediately when the battery depletes.
(oP. 367)
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered. (oP. 85)
■If the doors cannot be locked or unlocked by the keyless access with
push button start system
Lock and unlock the doors by the mechanical key or remote keyless entry
system.

5
When trouble arises
453
5-2. Steps to take in an emergency
If the batter y is discharged
The following procedures may be used to start the engine if the vehi-
cle's battery is discharged.
You can call your SUBARU dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehi-
cle with a 12-volt battery, you can jump start your vehicle following
the steps below.
Connect the jumper cables according to the following pro-
cedures:
Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in
the illustration.
STEP 1

454 5-2. Steps to take in an emergency
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Vehicles with a keyless access with push button start sys-
tem only: Open and close any of the doors of your vehicle
with the push-button ignition switch off.
Vehicles without a keyless access with push button start
system: Maintain the engine speed of the second vehicle
and turn the engine switch to the “ON” position, then start
the vehicle's engine.
Vehicles with a keyless access with push button start sys-
tem: Maintain the engine speed of the second vehicle and
turn the push-button ignition switch to “ON” mode, then
start the vehicle's engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your SUBARU
dealer as soon as possible.STEP 2
STEP 3
STEP 4
STEP 5

5
When trouble arises
455 5-2. Steps to take in an emergency
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■Avoiding a discharged battery
●Turn off the headlights and the air conditioning system while the engine is
off.
●Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■Precautions when the battery is discharged (vehicles with a keyless
access with push button start system)
●In some cases, it may not be possible to unlock the doors using the key-
less access with push button start system when the battery is dis-
charged. Use the remote keyless entry system or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first attempt after the battery has
recharged but will start normally after the second attempt. This is not a
malfunction.
●The push-button ignition switch mode is memorized by the vehicle. When
the battery is reconnected, the system will return to the mode it was in
before the battery was discharged. Before disconnecting the battery, turn
the push-button ignition switch off.
If you are unsure what mode the push-button ignition switch was in
before the battery discharged, be especially careful when reconnecting
the battery.