2018 TOYOTA YARIS battery

5248-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52J66E
Carrying out the corresponding action turns the warning light off.
■Passenger detection sensor and passenger seat belt reminder
● If luggage is placed on a passenger seat, the passenger detection sensor
may cause the warning light to flash even if a passenger is not sitting in the
seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Warning light operations for unfastened rear passenger seat belts
● When opening and closing the rear door, the warning light comes on for
approximately 34 seconds.
● When any of the rear seat belts are unfastened, the warning light comes on.
When the rear doors are opened and closed while the warning light is on,
the warning light will turn off after approximately 34 seconds.
■ If the malfunction indicator lamp comes on while driving
For some models, the malfunction indicator lamp will come on if the fuel tank
becomes completely empty. If the fuel tank is empty, refuel the vehicle imme-
diately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized
Toyota retailer or Toyota authorized repai rer, or any reliable repairer as soon
as possible.
Other warning light (vehicles with monochrome display)
Warning lightWarning light/Details/Actions
Go to service warning light
Indicates that maintenance of the hybrid battery (traction
battery) cooling component is required
The filter may be clogged, the air intake vent may be
blocked or there may be a gap in the duct.
 If the air intake vent is dirty, refer to P. 420 for clean-
ing the air intake vent.
 If the warning light comes on and the air intake vent
is not dirty, have the vehicle inspected at any autho-
rized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.

5258-2. Steps to take in an emergency
8
When trouble arises
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■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
■ Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sounds.
■ When the tire pressure warning light comes on (vehicles with a tire pres-
sure warning system)
Inspect the appearance of the tire to check that the tire is not punctured.
If the tire is punctured: P. 537, 556
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered suffi-
ciently.
● Check the tire inflation pressure and adjust to the appropriate level.
● If the warning light does not go out even after several minutes, check that
the tire inflation pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted
without first allowing the tire temperature to lower sufficiently.
■ The tire pressure warning light may come on due to natural causes
(vehicles with a tire pressure warning system)
The tire pressure warning light may come on due to natural causes such as
natural air leaks and tire inflation pressure changes caused by temperature.
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 (include compact spare tire)
(vehicles with a tire pressure warning system)
The spare tire (include compact spare tire) is not equipped with a tire pres-
sure warning valve and transmitter. If a tire goes flat, the tire pressure warn-
ing light will not turn off even though the flat tire has been replaced with the
spare tire. Replace the spare tire wi th the repaired tire and adjust the tire
inflation pressure. The tire pressure warning light will go off after a few min-
utes.

5308-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52J66E
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key is not pres-
ent when attempting to start the hybrid sys-
tem.
 Confirm the location of the electronic
key.
9 times(Flashes in yellow)
Smart entry & start system indicator
An attempt was made to drive when the
regular key was not inside the vehicle.
 Confirm that the electronic key is inside
the vehicle.
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key battery is
low.
 Replace the battery. (P. 477)
Once(Flashes quickly in green for 15 seconds.)
Smart entry & start system indicator
Indicates that the steering lock has not
been released.
 Release the steering lock. (P. 226)
Once(Flashes in yellow for 30 seconds.)
Smart entry & start system indicator
• When the doors were unlocked with the
mechanical key and then the power
switch was pressed, the electronic key
could not be detected in the vehicle.
• The electronic key could not be detected
in the vehicle even after the power switch
was pressed two consecutive times.
 Touch the electronic key to the power
switch while depressing the brake
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

5348-2. Steps to take in an emergency
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■If “See owner’s manual” is shown
If “Hybrid system malfunction. Stop in a safe place. See owner’s
manual.” is shown, there may be a malfunction. Immediately have
the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
■If “Maintenance required for Traction battery cooling parts.
See owner’s manual” is shown
The filter may be clogged, the air intake vent may be blocked or
there may be a gap in the duct.
If the air intake vent is dirty, refer to P. 420 for cleaning the air intake
vent.
If the message is being displayed and the air intake vent is not dirty,
have the vehicle inspected at any authorized Toyota retailer or Toy-
ota authorized repairer, or any reliable repairer.
■If “Charging system malfunction. Stop in a safe place. See
owner’s manual.” is shown
Indicates a malfunction in the vehicle’s charging system. Immedi-
ately stop the vehicle in a safe place and contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable
repairer. Continuing to drive the vehicle may be dangerous.
■If “Engine oil pressure low” is shown
Indicates that the engine oil pressure is too low. Immediately stop
the vehicle in a safe place and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.

5358-2. Steps to take in an emergency
8
When trouble arises
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■If “Hybrid system overheated. Reduced output power.” is
shown
This message may be shown when driving under severe operating
conditions. (For example, when driving up a long steep hill.)
Handling method: P. 581
■If “Hybrid battery low. Hybrid system stopped. Shift to P and
restart.” is shown
Message is displayed when the remaining charge for the hybrid
battery (traction battery) is low, because vehicle has been shifted to
N for a long period of time.
When operating the vehicle, shift to P and restart the hybrid system.
■If “Hybrid battery low. Shift out of N to recharge.” is shown
Message is displayed when the remaining charge for the hybrid
battery (traction battery) is low.
As the hybrid battery (traction battery) cannot be charged when the
shift lever is in N, when stopped for long periods of time shift the
shift lever to P.
■If “Shift is in N. Release accelerator before shifting.” is shown
Message is displayed when the accelerator pedal has been
depressed and the shift lever is in N.
Release the accelerator pedal and shift the shift lever to D or R.
■If “Auto power off to conserve battery” is shown
The power switch has been turned off by the automatic power off
function.
When starting the hybrid system next time, operate the hybrid sys-
tem for approximately 5 minutes to recharge the 12-volt battery

5368-2. Steps to take in an emergency
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■If “Front camera unavailable.” or “Front camera vision
blocked. Clean and demist windshield.” is displayed.
The following systems may be suspended until the problem shown
in the message is resolved.
● PCS (Pre-Crash Safety system)*
●LDA (Lane Departure Alert)*
●Automatic High Beam*
●RSA (Road Sign Assist)*
*: If equipped
■If “Low 12V sub battery level.” is shown.
Message is displayed when the remaining charge for the 12-volt
battery is low.
Charge or replace the 12-volt battery.
■Warning buzzer
 P. 5 2 5

5718-2. Steps to take in an emergency
8
When trouble arises
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If the hybrid system will not start
One of the following may be the cause of the problem:
● Vehicles with a smart entry & start system: The electronic key may
not be functioning properly. ( P. 573)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 252)
● There may be a malfunction in the immobilizer system. (P. 9 6 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 572)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 576)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 445)
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 216, 220)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5728-2. Steps to take in an emergency
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One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 576)
● One or both of the 12-volt battery terminals may be disconnected.
( P. 445)
Contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer if the problem cannot be repaired, or if repair procedures
are unknown.
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.
Do not use this starting procedure except in cases of emergency.
Set the parking brake.
Shift the shift lever to P.
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 any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
The Interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function (vehicles with a smart entry & start
system)
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