2014 TOYOTA SIENNA battery

708
4-3. Do-it-yourself maintenance
SIENNA_OM_OM45483U_(U)
Wireless remote control/electronic key batter y
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Flathead screwdriver
● Lithium battery CR2032
■ Replacing the battery (vehicles without a smart key system)
Remove the cover using a
coin protected with tape etc.
Remove the discharged trans-
mitter battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2

709
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_OM_OM45483U_(U)
■
Replacing the battery (vehicles with a smart key system)
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3

710 4-3. Do-it-yourself maintenance
SIENNA_OM_OM45483U_(U)
■Use a CR2032 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur.
●The smart key system (if equipped) and wireless remote control will not
function properly.
● The operational range will be reduced.
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other components inside the remote control.
● Do not bend either of the battery terminals.

When trouble arises5
735
SIENNA_OM_OM45483U_(U)
5-1. Essential informationEmergency flashers ......... 736
If your vehicle needs to be towed .................... 737
If you think something is wrong ......................... 741
Fuel pump shut off system ........................... 742 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 743
If a warning message is displayed........................ 758
If you have a flat tire (vehicles with
run-flat tires)................... 759
If you have a flat tire (vehicles with
standard tires) ................ 761
If the engine will not start .......................... 776
If the shift lever cannot be shifted from P............ 778
If you lose your keys ........ 780
If the electronic key does not operate properly....... 781
If the battery is discharged ..................... 784
If your vehicle overheats ....................... 790
If the vehicle becomes stuck .............................. 793
If your vehicle has to be stopped in an
emergency ..................... 795

736
SIENNA_OM_OM45483U_(U)
5-1. Essential information
Emergency flashers
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the
engine is not running.
Use the emergency flashers if th e vehicle malfunctions or is
involved in an accident.
Press the switch to flash all
the turn signal lights. To turn
them off, press the switch
once again.

5
When trouble arises
751
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
■
SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear),
driver’s seat position sensor, 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, inflators, interconnecting wiring
and power sources. ( P. 170)
■ Front passenger detection sensor and passenger seat belt reminder
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash even if a passen-
ger 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 warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the
warning buzzer may sound.

776
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
If the engine will not star t
If the engine will not start even though correct starting procedures
are being followed ( P. 228, 231), consider each of the following
points:
■ The engine will not start even though the starter motor
operates 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 again following correct starting proce-
dures. ( P. 228, 231)
● There may be a malfunction in the engine immobilizer system
(if equipped). ( P. 160)
■ 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. ( P. 784)
● The battery terminal connec tions may be loose or corroded.
■ The starter motor does not turn over (vehicles with a smart
key 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.
(  P. 777)

5
When trouble arises
777
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
Emergency start function (vehicles with a smart key system)
When the engine does not start, the following steps can be used as
an interim measure to start the engine if the “ENGINE START STOP”
switch is functioning normally: Set the parking brake.
Shift the shift lever to P.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for about
15 seconds while depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the system
may be malfunctioning. Have the vehicle inspected by your Toyota
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. ( P. 784)
● There may be a malfunction in the steering lock system (vehi-
cle with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4