2018 TOYOTA TUNDRA key battery

1113-1. Key information
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Operation of each component
■If you lose your keys
New genuine key can be made by your Toyota dealer using the other key 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.
■ Panic mode (vehicles with wireless remote control)
■ When riding in an aircraft (vehic les with wireless remote control)
When bringing a wireless key onto an aircraft, make sure you do not press
any buttons on the wireless key while inside the aircraft cabin . If you are car-
rying a wireless key in your bag, etc., ensure that the buttons are not likely to
be pressed accidentally. Pressing a button may cause the wirele ss key to
emit radio waves that could interfere with the operation of the aircraft.
■ Conditions affecting operation (vehicles with wireless remote c ontrol)
The wireless remote control function may not operate normally i n the following
situations.
● Near a TV tower, radio station, electric power plant, airport o r other facility
that generates strong radio waves
● When carrying a portable radio, cellular phone or other wireles s communi-
cation device
● When multiple wireless keys are in the vicinity
● When the wireless key has come into contact with, or is covered by a metal-
lic object
● When a wireless key (that emits radio waves) is being used near by
● When the wireless key has been left near an electrical applianc e such as a
personal computer
■ Key battery depletion (vehicles with wireless remote control)
If the wireless remote control function does not operate, the b attery may be
depleted. Replace the battery when necessary. ( P. 516)
■ Replacing the battery (vehicles with wireless remote control)
P. 516 When is pressed for longer than about
1 second, an alarm will sound intermit-
tently and the vehicle lights will flash to
deter any person from trying to break into
or damage your vehicle.
To stop the alarm, press any button on the
wireless remote control.

1123-1. Key information
■Certification for wireless remote control (vehicles with wireless remote
control)
For vehicles sold in the U.S.A.
FCC ID: GQ4-52T
FCC ID: GQ4-49R
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause har mful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party re sponsible for
compliance could void the user’s authority to operate the equip ment.

The FCC ID/IC Certification number is affixed inside the equipment. You can
find the ID/number when replacing the battery.
For vehicles sold in Canada
NOTE:
This device complies with Industry Canada’s license-exempt RSSs . Opera-
tion is subject to the following two conditions: (1) This devic e may not cause
interference; and (2) This device must accept any interference, including
interference that may cause undesired operation of the device.

The FCC ID/IC Certification number is affixed inside the equipment. You can
find the ID/number when replacing the battery.
NOTE:
Le présent appareil est conforme aux CNR d’Industrie Canada app licables
aux appareils radio exempts de licence. L’exploitation est auto risée aux deux
conditions suivantes:(1) l’appareil ne doit pas produire de bro uillage; (2) l’util-
isateur de l’appareil doit accepter tout brouillage radioélectr ique subi, même
si le brouillage est susceptible d’en compromettre le fonctionn ement.

L’identification FCC/Ie numéro d’accréditation IC est apposé(e) à l’intérieur
de l’appareil.

1964-2. Driving procedures
■When the steering lock cannot be released
■ Key reminder function
A buzzer sounds if the driver’s door is opened while the engine switch is in
the “ACC” or “LOCK” position to remind you to remove the key. When starting the engine, the engine
switch may seem stuck in the “LOCK”
position. To free it, turn the key while turn-
ing the steering wheel slightly left and
right.
WARNING
■ When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the engine under any circumsta nces.
Doing so may cause an accident resulting in death or serious in jury.
■ Caution while driving
Do not turn the engine switch to the “LOCK” position while driving. If, in an
emergency, you must turn the engine off while the vehicle is mo ving, turn
the engine switch only to the “ACC” position to stop the engine. An accident
may result if the engine is stopped while driving. ( P. 539)
NOTICE
■To prevent battery discharge
Do not leave the engine switch in the “ACC” or “ON” position fo r long peri-
ods of time without the engine running.
■ When starting the engine
● Do not crank the engine for more than 30 seconds at a time. This may
overheat the starter and wiring system.
● Do not race a cold engine.
● If the engine becomes difficult to start or stalls frequently, have your vehi-
cle checked by your Toyota dealer immediately.

2104-3. Operating the lights and wipers
■Automatic light off system
●When the headlights come on: The headlights and tail lights tur n off 30 sec-
onds after a door is opened and closed if the engine switch is turned to the
“ACC” or “LOCK” position. (The lights turn off immediately if t he button
on the key is pressed after all the doors are locked.)
● When only the tail lights come on: The tail lights turn off aut omatically if the
engine switch is tuned to the “ACC” or “LOCK” position and the driver’s door
is opened.
Vehicles with automatic headlight system: If any of the doors i s kept open, the
lights automatically turn off after 20 minutes.
To turn the lights on again, turn the engine switch to the “ON” position, or turn
the light switch off once and then back to or .
■ Light reminder buzzer
A buzzer sounds when the key is removed from the engine switch and the
driver’s door is opened while the lights are turned on.
■ Customization that can be configured at Toyota dealer
Settings (automatic light off system) can be changed.
(Customizable features: P. 624)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engin e is not
running.

5167-3. Do-it-yourself maintenance
Wireless remote control batter y
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2016
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
To prevent the buttons from being
disassembled, face the button sur-
face downward.
Remove the module.
Open the case cover using a
coin protected with tape, etc.,
and remove the depleted bat-
tery.
Insert a new battery with the “+”
terminal facing up.
: If equipped
Replace the battery with a n ew one if it is depleted.
You will need the following items:
Replacing the battery
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5177-3. Do-it-yourself maintenance
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Maintenance and care
■Use a CR2016 lithium battery
●Batteries can be purchased at your Toyota dealer, local electri cal 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 wireless remote control will not function properly.
● The operational range will be reduced.
WARNING
■Removed battery a nd other parts
Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.
■ Certification for the lithium 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 cont rol.
● Do not bend either of the battery terminals.

5828-2. Steps to take in an emergency
If the vehicle batter y is discharged
If you have a set of jumper (or booster) cables and a second ve hicle
with a 12-volt battery, you can jump start your vehicle by foll owing the
steps below.
Confirm that the key and wire-
less remote control (if
equipped) are being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and the doors may lock. ( P. 87)
Open the hood. (P. 484)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) batte ry
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery termi nal on the second vehicle.
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
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654What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys, new genuine keys can be made by your Toyota
dealer. (P. 111 )
●Is the wireless key battery weak or depleted? ( P. 516)
●The function may not operate properly due to the condition of t he radio
wave. ( P. 111)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. ( P. 116)
●Is the shift lever in P? ( P. 195)
●Is the battery discharged? ( P. 582)
●Is the engine switch in the “ON” position?
If you cannot release the shift lever by depressing the brake p edal with the
engine switch in the “ON” position. ( P. 201)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
If you think something is wrongThe engine does not start
The shift lever cannot be shifted from P even if you depress
the brake pedal