2012 TOYOTA PRIUS PLUG-IN light

5
When trouble arises
547
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on the multi-infor-
mation display. The following warnings indicate the possibility of dam-
age to the vehicle that may lead to an accident. Immediately stop the
vehicle in a safe place and contact your Toyota dealer.
Warning messageDetails
(U.S.A.)
(Canada)
Indicates an abnormal engine oil pressure.
The warning light may turn on if the engine oil pres-
sure is too low.
Indicates a malfunction in the hybrid system.

548
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning messageDetails
(If equipped)
Indicates a malfunction in the LED headlight system.
Indicates a malfunction in the P position control sys-
tem.
In this situation, there is a possibility that the parking
lock mechanism will not work.
When parking, park the vehicle on a flat surface and
apply the parking brake securely. Also, it may not be
possible to turn the “POWER” switch off. If this hap-
pens, applying the parking brake will enable the
switch to be turned off.
(Flashes)
(If equipped)
Indicates a malfunction in the pre-collision system.
A buzzer also sounds.

556
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem,
check that the warning message and light turn off.
Interior
buzzer
Exterior
buzzerWarning messageDetailsCorrection
procedure
Once⎯
(Comes on for 15 seconds.)
(Flashes)
The electronic
key is not
detected when
attempting to
start the hybrid
system.
Confirm
the loca-
tion of the
electronic
key.
Once 3 times
(Flashes)
An open door
other than the
driver’s door is
closed while the
electronic key is
outside the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode.
Confirm
the loca-
tion of the
electronic
key.

5
When trouble arises
561
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Interior
buzzer
Exterior
buzzerWarning messageDetailsCorrection
procedure
Once⎯
(Flashes)
The elec-
tronic key
does not
operate
properly.
→P. 5 9 1
⎯⎯
Power
was
turned off
due to
the auto-
matic
power off
function.
Next time when
starting the
hybrid system,
increase the
engine speed
slightly and
maintain that
level for approxi-
mately 5 min-
utes to charge
the battery.
NOTICE
■While the engine oil level warning is displayed
Continued engine operation with low engine oil will damage the engine.
■Engine oil maintenance message
The warning message is based on the projected driving range after engine
oil maintenance message is reset.
The system does not monitor the purity of the engine oil.

562
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Charging messages
A message showing the charge results will be displayed if the
“POWER” switch is turned to ON mode after charging has completed
(when the vehicle’s charging indicator has turned off).
If one of the following messages is displayed, follow the correction proce-
dures.
If the message displays again after following the correction procedure,
contact your Toyota dealer.
*:For information about the safety functions, refer to P. 91.
MessageDetailsCorrection
procedure
The charging cable has
been connected to the
vehicle while the
“READY” indicator light
was illuminated.
A warning buzzer will
sound.
The hybrid system auto-
matically stopped due to
operation of the safety
functions*.
Turn the “POWER”
switch off and perform
charging according to the
procedures on P. 80.
An attempt has been
made to start the hybrid
system while the charg-
ing cable was connected.
A warning buzzer will
sound.
The hybrid system can-
not be started while the
charging cable is con-
nected due to the safety
functions*.
Disconnect the charging
cable and start the hybrid
system.

564
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
MessageDetailsCorrection
procedure
Charging has been
stopped because of the
high energy consumption
of electrical compo-
nents, such as the head-
lights.
Switch the electrical
appliance OFF, and
restart charging by fol-
lowing the procedure on
P. 8 0 .
If the message is still
displayed, the 12-volt
battery may have a low
charge.
In this event, turn the
“POWER” switch OFF
approximately 15 min-
utes after starting the
hybrid system, and
restart charging.
Charging has been
stopped because of
extremely low voltage,
possibly caused by the
plug not being inserted
correctly.
Check that the plug is
inserted correctly, and
restart charging by fol-
lowing the procedure on
P. 8 0 .
Check that the plug is
not connected to a
power strip and that an
extension cord, multi-
outlet etc. is not being
used.

588
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following and perform the appropriate proce-
dure:
■The hybrid system will not start even though the correct
starting procedure is being followed (→P. 2 3 8 )
One of the following may be the cause of the problem:
●The charging cable may be attached to the vehicle. (→P. 9 1 )
●The electronic key may not be functioning properly.*
(→P. 5 9 1 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system.*
(→P. 1 7 9 )
●There may be a malfunction in the P position control system.*
(→P. 2 4 3 , 5 4 8 )
*: It may not be possible to shift the shift position from P to another
position.
■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 12-volt battery may be discharged. (→P. 5 9 4 )
●The 12-volt battery terminal connections may be loose or cor-
roded.

5
When trouble arises
589
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the
“POWER” switch is functioning normally:
Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
To y o t a d e a l e r .
■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 12-volt battery terminals may be discon-
nected.
●The 12-volt battery may be discharged. (→P. 5 9 4 )
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3