2020 TOYOTA HILUX Replacing the Key battery

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6-4. Using the other interior
features
Other interior features ........548
• Sun visors ......................548
• Vanity mirror ..................548
• Clock .............................549
• Power outlets .................550
• Grocery bag hooks ........552
• Coat hooks ....................553
• Armrest ..........................553
7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ..........556
Cleaning and protecting
the vehicle interior ...........560
7-2. Maintenance
Maintenance
requirements....................563
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ......................566
Hood ..................................568
Engine compartment..........570
Tires ...................................590
Tire inflation pressure ........593
Wheels ...............................595
Air conditioning filter ..........597
Wireless remote control/
electronic key battery.......599
Checking and
replacing fuses ................602
Light bulbs .........................607
8-1. Essential information
Emergency flashers .......... 624
If your vehicle has to
be stopped in an
emergency ...................... 625
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ..................... 627
If you think something is
wrong .............................. 632
Fuel pump shut off
system (gasoline engine
only) ................................ 633
If a warning light turns on
or a warning buzzer
sounds ............................ 634
If a warning message is
displayed ......................... 643
If you have a flat tire .......... 649
If the engine will not
start ................................. 666
If the electronic key does
not operate properly
(vehicles with smart
entry & start system) ....... 668
If the vehicle battery is
discharged ...................... 672
If your vehicle
overheats ........................ 678
If you run out of fuel
and the engine stalls
(diesel engine only) ......... 682
If the vehicle becomes
stuck................................ 683
7Maintenance and care
8When trouble arises

1683-1. Key information
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■ If you lose your keys
New genuine keys can be made by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer using a master key (vehicles with-
out smart entry & start system) or the other key of the same type (vehicles
with smart entry & start system), and the key number stamped on your key
number plate. Keep the plate in a safe place such as your wallet, not in the
vehicle.
■ When riding in an aircraft (type C, D, E and F)
When bringing a key with wireless remote control function onto an aircraft,
make sure you do not press any buttons on the key while inside the aircraft
cabin. If you are carrying the key in your bag etc., ensure that the buttons are
not likely to be pressed accidentally. Pressing a button may cause the key to
emit radio waves that could interfere with the operation of the aircraft.
■ Key battery depletion
Vehicles without smart entry & start system
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. ( P. 599)
Vehicles with smart entry & start system
 P. 203
■ If a message regarding the state of the electronic key or engine switch
mode, etc. is shown
To prevent trapping the electronic key in side the vehicle, leaving the vehicle
without turning off the engine switch or other passengers from unintentionally
taking the key out of the vehicle, etc., a message that prompts the user to
confirm the state of the electronic key or engine switch mode may be shown
on the multi-information display. In those cases, follow the instructions on the
display immediately.
■ If “KEY BATTERY LOW”/“Key battery low” is shown on the multi-infor-
mation display (if equipped)
The electronic key has a low battery. Replace the electronic key battery.
■ Replacing the electronic key battery
 P. 599
■ Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer for details.

555
7Maintenance and care
HILUX_OM_OM0K321E_(EE)
7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 556
Cleaning and protecting
the vehicle interior ........... 560
7-2. Maintenance
Maintenance
requirements.................... 563
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 566
Hood .................................. 568
Engine compartment.......... 570
Tires ................................... 590
Tire inflation pressure ........ 593
Wheels ............................... 595
Air conditioning filter .......... 597
Wireless remote control/
electronic key battery....... 599
Checking and
replacing fuses ................ 602
Light bulbs ......................... 607

5997-3. Do-it-yourself maintenance
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Maintenance and care
Wireless remote control/electronic key
batter y
● Flathead screwdriver
● Small flathead screwdriver
● Lithium battery
Vehicles without smart entry & start system: CR1620
Vehicles with smart entry & start system: CR2032
Vehicles without smart entry & start system
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the battery cover.
: If equipped
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
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2

6017-3. Do-it-yourself maintenance
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Maintenance and care
■Use a lithium battery
Vehicles without smart entry & start system: CR1620
Vehicles with smart entry & start system: CR2032
● Batteries can be purchased at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, local electrical appliance shops
or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The smart entry & start system (if equipped) and wireless remote control will
not function properly.
● The operational range will be reduced.
WARNING
■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.
■ Certification for the key battery
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS
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 component inside the remote control.
● Do not bend either of the battery terminals.

6718-2. Steps to take in an emergency
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When trouble arises
■Stopping the engine
Shift the shift lever to P (automatic transmission) or N (manual transmission)
and press the engine switch as you normally do when stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 599)
■ Alarm (vehicles with alarm for Kazakhstan, Armenia and Morocco)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.
■ Changing engine switch modes
Release the brake pedal (automatic transmission) or clutch pedal (manual
transmission) and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is
pressed. ( P. 288)
■ When the electronic key does not work properly
● Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features: P. 718)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 199)
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6748-2. Steps to take in an emergency
HILUX_OM_OM0K321E_(EE)
Once the vehicle’s engine has started, remove the jumper cables in
the exact reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer
as soon as possible.
■ Starting the engine when the battery is discharged (vehicles with auto-
matic transmission)
The engine cannot be started by push-starting.
■ To prevent battery discharge
● Turn off the headlights and the audio system while the engine is off.
(Vehicles with Stop & Start system: Except when the engine is stopped due
to the Stop & Start system)
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ When the battery is removed or discharged
● Information stored in the ECU is cleared. When the battery is depleted, have
the vehicle inspected at any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
● The power windows may not close normally. In this case, initialize the power
windows. (if equipped) ( P. 250)
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■ When recharging or replacing the battery (vehicles with smart entry &
start system)
● In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the battery is discharged. Use the wireless
remote control or the mechanical key to lock or unlock the doors.
● The engine may not start on the first attempt after the battery has recharged
but will start normally after the second attempt. This is not a malfunction.
● The engine switch mode is memorized by the vehicle. When the battery is
reconnected, the system will return to the mode it was in before the battery
was discharged. Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.
● Vehicles with Stop & Start system: After the battery terminals have been dis-
connected and reconnected or, the battery has been replaced, the Stop &
Start system may not automatically stop the engine for approximately 5 to
60 minutes.
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735Alphabetical index
HILUX_OM_OM0K321E_(EE)
Driving
Break-in tips .......................... 257
Correct posture ....................... 40
Procedures............................ 254
Winter drive tips .................... 438
Dynamic radar cruise
control .................................... 367
Function ................................ 367
Warning message ................. 643
Eco Driving Indicator....... 138, 140
Emergency flashers................. 624
Electronic key
If the electronic key does
not operate properly ........... 668
Replacing the battery ............ 599
Emergency, in case of
If a warning buzzer
sounds ................................ 634
If a warning light turns on ...... 634
If the electronic key does
not operate properly ........... 668
If the engine will not start ...... 666
If the vehicle battery is
discharged .......................... 672
If you have a flat tire.............. 649
If you lose your keys ............. 168
If you run out of fuel and
the engine stalls.................. 682
If you think something is
wrong .................................. 632
If your vehicle becomes
stuck ................................... 683
If your vehicle has to be
stopped in an
emergency.......................... 625
If your vehicle needs to be
towed .................................. 627
If your vehicle overheats ....... 678
Engine
“ACC” position ...................... 283
Compartment ........................ 570
Engine switch................ 282, 285
Hood ..................................... 568
How to start the
engine......................... 282, 285
Identification number ............ 693
If the engine will not start ...... 666
If you run out of fuel and the
engine stalls ....................... 682
If your vehicle has to be
stopped in an
emergency.......................... 625
Ignition switch
(engine switch) ........... 282, 285
Overheating .......................... 678
Engine coolant
Capacity ................................ 706
Checking ............................... 576
Preparing and checking
before winter....................... 438
Engine coolant
temperature gauge ................ 144
Engine immobilizer system .... 105
Engine oil
Capacity ................................ 696
Checking ............................... 573
Oil level warning light ............ 639
Oil pressure warning light ..... 634
Preparing and checking
before winter....................... 438
Engine oil maintenance
data ......................................... 575
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