2014 TOYOTA PRIUS C ECU

426 4-3. Do-it-yourself maintenance
CAUTION
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When i\
t is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
■ To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
431
5-1. Essential information
Using a flatbed truck
If your Toyota is transported by a
flatbed truck, it should be tied
down at the locations shown in
the illustration.
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45.
Do not overly tighten the tie
downs or the vehicle may be
damaged.
Emergency towing
If a tow truck is not available in an emergency, your vehicle may be
temporarily towed using a cable or chain secured to the emergency
towing eyelet. This should only be attempted on hard surfaced roads
for short distances at under 18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.

432 5-1. Essential information
Emergency towing procedureTake out the towing eyelet. ( P. 463)
Push the eyelet cover and then
open it.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.
Securely attach a cable or chain to the towing eyelet.
Take care not to damage the vehicle body.
STEP1
STEP2
STEP3
STEP4
STEP5

434 5-1. Essential information
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When towing the vehicle
■ While towing
●When towing using a rope, avoid sudden starts, etc. which place exces-
sive stress on the towing hook and rope.
The towing hook or rope may become damaged, broken debris may hit
people and cause serious damage.
● Do not turn the engine switch off (vehicles without a smart key system) or
the “POWER” switch off (vehicles with a smart key system).
There is a possibility that the steering wheel is locked and can not be oper-
ated.
■ Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing.
Be sure to transport the vehicle with the
front wheels raised or with all four
wheels raised off the ground. If the
vehicle is towed with the front wheels
contacting the ground, the drivetrain
and related parts may be damaged or
electricity generated by the operation of
the motor may cause a fire to occur
depending on the nature of the damage
or malfunction.

5
When trouble arises
441
5-2. Steps to take in an emergency
*: Driver's and front passen
ger's seat belt buzzer:
The driver's and front passenger's seat belt buzzer sounds to alert the driver
and front passenger that his or her seat belt is not fastened. Once the engine
switch is turned to the “ON” or “START” position (vehicles without a smart
key system) or the “POWER” switch is turned to ON mode (vehicles with a
smart key system), the buzzer sounds for 6 seconds. If the vehicle reaches a
speed of 12 mph (20 km/h), the buzzer sounds once. If the seat belt is still
unfastened after 30 seconds, the buzzer will sound intermittently for 10 sec-
onds. Then, if the seat belt is still unfastened, the buzzer will sound in a dif-
ferent tone for 20 more seconds.
■ SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors, driver's seat belt buckle switch, front passen-
ger occupant classification system (ECU and sensors), “AIR BAG ON” indi-
cator light, “AIR BAG OFF” indicator light, front passenger's seat belt buckle
switch, seat belt pretensioner assemblies, airbags, interconnecting wiring
and power sources. ( P. 438)
■ Front passenger detection sensor, passenger seat belt reminder and
warning buzzer
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash and the warning
buzzer to sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
■ Electric power steering system wa rning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily drops, the electric power st eering system warning light may come on
and the warning buzzer may sound.

442 5-2. Steps to take in an emergency
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank cap becomes
loose. If the fuel tank cap is loose, tighten it securely. The malfunction indica-
tor lamp will go off after several trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
Pushing the tire pressure warning reset switch will not turn off the tire
pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such
as natural air leaks and tire inflat ion pressure changes caused by tem-
perature. In this case, adjusting the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning
valve and transmitter. If a tire goes flat, the tire pressure warning light will
not turn off even though the flat tire has been replaced with the spare
tire. Replace the spare tire with the re paired tire and adjust the tire infla-
tion pressure. The tire pressure wa rning light will go off after a few min-
utes.

460 5-2. Steps to take in an emergency
Once(Flashes)• The electronic
key could not be
detected when
the “POWER”
switch was
pressed after
the doors were
unlocked with
the mechanical
key.
• The electronic key could not be
detected two
consecutive
times when the
“POWER”
switch was
pressed. Touch the elec-
tronic key to the
“POWER”
switch while
depressing the
brake pedal.
Once
(Flashes)An attempt was
made to start
the hybrid sys-
tem with the
shift lever in a
position other
than P.
Shift the shift
lever to P and
start the hybrid
system.
 Power was
turned off due to
the automatic
power off func-
tion.Next time when
starting the
hybrid system,
increase the
engine speed
slightly and
maintain that
level for approx-
imately 5 min-
utes to recharge
the 12-volt-bat-
tery.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure

5
When trouble arises
465
5-2. Steps to take in an emergency
Taking out the compact spare tire
Remove the luggage floor cover
by lifting up the points indicated
by the arrows.
Remove the spare wheel cush-
ions, then loosen the center fas-
tener that secures the spare tire.
STEP1
STEP2