TOYOTA tC 2012 Owners Manual (in English)

5
When trouble arises
401
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
Changing “ENGINE START STOP”
switch modes and starting the
engine
Automatic transmission Ensure that the shift lever is in P and depress the brake pedal.
Touch the Scion emblem side of
the electronic key to the
“ENGINE START STOP” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the key.
To change “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer sounding, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the sw itch is pressed. (P. 170)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds of the buz zer sounding, keeping the brake
pedal depressed.
In the event that the “ENGINE ST ART STOP” switch still cannot be
operated, contact your Scion dealer.
STEP 1
STEP 2
STEP 3

402 5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
Manual transmissionShift the shift lever to N and depress the clutch pedal.
Touch the Scion emblem side of
the electronic key to the
“ENGINE START STOP” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the key.
To change “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer sounding, release the clutch pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the sw itch is pressed. (P. 170)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds of the buzzer sounding, keeping the clutch
pedal depressed.
In the event that the “ENGINE ST ART STOP” switch still cannot be
operated, contact your Scion dealer.
STEP 1
STEP 2
STEP 3

5
When trouble arises
403
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
■
Stopping the engine
Shift the shift lever to P (automatic transmission) or N (manual transmission)
and press the “ENGINE START STOP” 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
electronic key battery be replaced immediately when the battery is depleted.
(P. 326)

404
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
If the vehicle batter y is discharged
The following procedures may be used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Scion dealer or a qualified repair shop.
If you have a set of jumper (or boo ster) cables and a second vehi-
cle with a 12-volt battery, you can jump start your vehicle by follow-
ing the steps below.
Open the hood. ( P. 290)
Connect the jumper cables accord ing to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle.
Connect the clamp on the other e nd of the positive cable to the
positive (+) battery termin al on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metal lic point away from the battery
and any moving parts, as shown in the illustration.
STEP 1
STEP 2

5
When trouble arises
405
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
■
Starting the engine when the battery is discharged (vehicles with an
automatic transmission)
The engine cannot be started by push-starting.
■ To prevent battery discharge
● Turn off the headlights and the audio system while the engine is turned
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.
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 smart key system only: Open and close any
of the doors of your vehicle with the “ENGINE START
STOP” switch off.
Maintain the engine speed of the second vehicle and start
the engine of your vehicle by turning the engine switch to
the “ON” position (vehicles without a smart key system) or
turning the “ENGINE START STOP” switch to IGNITION
ON mode (vehicles with a smart key system).
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order from which they were con-
nected.
Once the engine starts, have the vehicle inspected at your Scion
dealer as soon as possible.STEP 3
STEP 4
STEP 5
STEP 6

406 5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
■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.)
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.

5
When trouble arises
407
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
CAUTION
■
Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery:
● When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.
● Do not lean over the battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention. 
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the battery.
■ To prevent damage to the vehicle
Do not pull- or push-start the vehicle as the three-way catalytic converter
may overheat and become a fire hazard.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or belt.

408
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air condi-
tioning system.
Check to see if steam is coming out from under the hood.
If you see steam: 
Stop the engine. Carefully lift the hood after the steam
subsides and then restart the engine.
If you do not see steam: 
Leave the engine running and carefully lift the hood.
Check to see if the cooling fans are operating.
If the fans are operating: 
Wait until the high coolant temperature warning light
goes off and then stop the engine.
If the fans are not operating: 
Stop the engine immediately and call your Scion dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and
inspect the radiator core (radi-
ator) for any leaks.STEP 1
STEP 2
STEP 3
STEP 5 STEP 4

5
When trouble arises
409
5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
■
Overheating
If you observe the following, your vehicle may be overheating:
● The high engine coolant temperature warning light flashes or comes on
or a loss of power is experienced.
● Steam comes out from under the hood.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable.
(P. 421)
Have the vehicle inspected at the nearest Scion dealer as soon as
possible.
STEP 5

410 5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.
● Keep hands and clothing away from the fans and drive belt while the
engine is running.
● Do not loosen the coolant reservoir cap while the engine and radiator are
hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant. 
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.