2023 TOYOTA TUNDRA HYBRID jump cable

5297-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
3 Firmly depress the brake
pedal and check that is
shown on the multi-informa-
tion display.
4 Press the power switch
shortly and firmly.
In the event that the hybrid sys-
tem still cannot be started, con-
tact your Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the park-
ing brake, shift the shift lever to P
and press the power switch as you
normally do when stopping the
hybrid system.
■Electronic key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly when the bat-
tery is depleted. ( P.484)
■Alarm
Using the mechanical key to lock
the doors will not set the alarm sys-
tem. If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered. ( P. 8 2 )
■Changing power switch modes
Release the brake pedal and press
the power switch in step 3 above.
The hybrid system does not start
and modes will be changed each
time the switch is pressed. ( P.198)
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Confirm that the electronic
key is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. ( P. 8 3 )
2 Open the hood ( P.456) and
fuse box cover.
Push claw to completely release
If the vehicle 12-volt
batter y is discharged
The following procedures
may be used to start the
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your Toy-
ota dealer or a qualified
repair shop.
Restarting the hybrid sys-
tem

5307-2. Steps to take in an emergency
Owners Manual_USA_M0C052_enthe lock, and them lift up the cover.
3
Open the exclusive jump
starting terminal cover. 4
Remove the engine cover.
Lift the edge of the cover to disen-
gage the fixed pins, and then pull
the cover towards you to remove it.
5 Connect a positive jumper cabl e clamp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connect a negative cable clamp to
on the second vehicle and connect the clamp at the other end of
the negative cable to .

5317-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery term inal (second vehicle)
Solid, stationary, unpainted metallic point away from the batte ry
and any moving parts as shown in the illustration
6 Start the engine of the sec-
ond vehicle. Increase the
engine speed slightly and
maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery
of your vehicle.
7 Open and close any of the
doors of your vehicle with the
power switch OFF.
8 Maintain the engine speed of
the second vehicle and start
the hybrid system of your
vehicle by turning the power
switch to ON.
9 Once the vehicle’s hybrid
system has started, remove
the jumper cables in the
exact reverse order from
which they were connected.
10 When the engine cover
installing, reverse the step
removed.
11 Close the exclusive jump
starting terminal cover, and
reinstall the fuse box cover to
its original position.
Once the engine starts, have the
vehicle inspected at your Toyota
dealer as soon as possible.
■Starting the hybrid system
when the battery is discharged
The hybrid system cannot be started
by push-starting.
■To prevent 12-volt battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at your Toyota dealer.
●Some systems may require initial-
ization. ( P.571)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cleared. Before
removing the 12-vo lt battery termi-
nals, contact you r Toyota dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt
battery will discha rge gradually even
when the vehicle i s not in use, due
to natural dischar ge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-

5337-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
WARNING
■When removing the 12-volt
battery terminals
Always remove the negative (-)
terminal first. If the positive (+) ter-
minal contacts any metal in the
surrounding area when the posi-
tive (+) terminal is removed, a
spark may occur, l eading to a fire
in addition to electrical shocks
and death or serious injury.
■Avoiding 12-volt battery fires
or explosions
Observe the following precautions
to prevent accidentally igniting the
flammable gas that may be emit-
ted from the 12-volt battery:
●Make sure each jumper cable is
connected to the correct termi-
nal and that it is not unintention-
ally in contact with any other
than the intended terminal.
●Do not allow the other end of
the jumper cable connected to
the “+” terminal to come into
contact with any other parts or
metal surfaces in the area, such
as brackets or unpainted metal.
●Do not allow the + and - clamps
of the jumper cables to come
into contact with each other.
●Do not smoke, use matches,
cigarette lighters or allow open
flame near the 12-volt battery.
■12-volt battery precautions
The 12-volt battery contains poi-
sonous and corrosi ve acidic elec-
trolyte, while related parts contain
lead and lead compounds.
Observe the following precautions
when handling the 12-volt battery:
●When working with the 12-volt
battery, always wear safety
glasses and take care not to
allow any 12-volt battery fluids
(acid) to come into contact with
skin, clothing or the vehicle
body.
●Do not lean over the 12-volt bat-
tery.
●In the event that 1 2-volt battery
fluid comes into contact with the
skin or eyes, immediately wash
the affected area with water and
seek medical attention. Place a
wet sponge or cloth over the
affected area until medical
attention can be received.
●Always wash your hands after
handling the 12-volt battery sup-
port, terminals, and other bat-
tery-related parts.
●Do not allow children near the
12-volt battery.
■After recharging the 12-volt
battery
Have the 12-volt battery
inspected at your Toyota dealer
as soon as possible. If the 12-volt
battery is deteriorating, continued
use may cause the 12-volt battery
to emit a malodorous gas, which
may be detrimenta l to the health
of passengers.
■When replacing the 12-volt
battery
●For information regarding 12-
volt battery rep lacement, con-
tact your Toyota dealer.

5347-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
WARNING
●After replacing, securely attach
the exhaust hose and exhaust
hole plug to the exhaust hole of
the replaced 12-volt battery. If
not properly installed, gases
(hydrogen) may leak into the
vehicle interior, and there is the
possible danger of the gas ignit-
ing and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan.