2013 TOYOTA HIGHLANDER HYBRID key battery

494 4-3. Do-it-yourself maintenance
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury observe the following precautions.
■When working on the engine compartment
●Vehicles without smart key system: Make sure that the engine switch is in
the “LOCK” position and the “READY” indicator is off.
Vehicles with smart key system: Make sure that the indicator on the
“POWER” switch and the “READY” indicator are both off.
● Keep hands, clothing, and tools away from the moving fan.
● Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
● Never touch, disassemble, remove or replace the high voltage parts,
cables and their connectors. It can cause severe burns or electric shock
that may result in death or serious injury.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.

512 4-3. Do-it-yourself maintenance
■Exterior
Make sure that the 12-volt battery terminals are not corroded and
that there are no loose connecti ons, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to
disconnect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12-volt battery.
■ After recharging/reconnect ing the 12-volt battery (vehicles with smart
key system)
In some cases, the hybrid system may not start. Follow one or both of the
following procedures:
● After opening and closing the driver’s door, wait 10 seconds then attempt
to start the hybrid system. (If the system does not start first time, repeat
the procedure.)
● With the shift lever in P and the “POWER” switch OFF, open and close
the driver’s door, then attempt to start the hybrid system.
If the system will not start even after multiple attempts at both methods, con-
tact your Toyota dealer.

532
4-3. Do-it-yourself maintenance
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 (To prevent damage to the key, cover
the tip of the screwdriver with a rag.)
● Small Phillips-hea d screwdriver
● Lithium battery CR2032 (vehicles without smart key system),
CR1632 (vehicles with smart key system)
■ Replacing the battery (vehicles without 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

533
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Replacing the battery (vehicles with smart key system)
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3

534 4-3. Do-it-yourself maintenance
■If the electronic key battery is discharged
The following symptoms may occur.
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range is reduced.
■ Use a CR2032 (vehicles without sm art key system) or CR1632 (vehicles
with smart key system) lithium battery
● Batteries can be purchased at your Toyota dealer, jewelers, or camera
stores.
● Replace only with the same or equivalent type recommended by your
Toyota dealer.
● Dispose of used batteries according to the local laws.
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
557
5-1. Essential informationEmergency flashers ......... 558
If your vehicle needs to be towed ........................ 560
If you think something is wrong ............................. 566 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 567
If a warning message is displayed........................ 577
If you have a flat tire......... 579
If the hybrid system will not start .......................... 592
If the shift lever cannot be shifted from P............ 594
If you lose your keys/ wireless remote control
transmitter ...................... 595
If the electronic key does not operate properly....... 596
If the 12-volt battery is discharged ..................... 598
If your vehicle overheats ....................... 602
If the vehicle becomes stuck .............................. 606
If your vehicle has to be stopped in an
emergency ..................... 607

592
5-2. Steps to take in an emergency
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start, even though the correct
starting procedure is being followed. ( P. 183, 188)
One of the following may be the cause of the problem.
● The electronic key may not be functioning properly. ( P. 596)
● There may be a malfunction in the immobilizer system.
( P. 125)
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfun ctioning due to an electrical
problem such as an open circuit or a blown fuse. However,
depending on the type of malf unction, an interim measure is
available to start the hybrid system. ( P. 593)
■ 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. 598)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.

5
When trouble arises
593
5-2. Steps to take in an emergency
Emergency start function (vehicles with smart key system)
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the
“POWER” switch is functioning normally.
Set the parking brake.
Shift the shift lever to P.
Turn the “POWER” switch to ACCESSORY mode.
Push and hold the “POWER” switch 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. Ha ve the vehicle checked by your
Toyota dealer.
■ 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 ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 598)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4