2023 TOYOTA TUNDRA HYBRID differential

20Pictorial index
Owners Manual_USA_M0C052_en
Outer mirror extend switch*.............................................. P.157
Trailer brake control switc h .............................................. P.380
Light bar switch
*............................................................... .P.218
*: If equipped
Front-wheel drive control switch
*..................................... P.361
“DRIVE MODE” switch
*..................................................... P.358
“TOW HAUL” switch
*......................................................... P.203
Mode select switch
*................................... P.203, 358, 365, 369
“MTS” switch
*............................................................... ...... P.369
“DAC/CRAWL” switch
*...................................................... P.365
Trailer Backup Guide switch
*............................................ P.383
Camera switch
*............................................................... .... P.312
VSC OFF switch ................................................. ................ P.376
Emergency flasher switch ....................................... .......... P.494
Height control mode select switch
*.................................. P.355
Height control switch
*....................................................... P.355
Rear differential lock switch
*............................................ P.364

882-1. Instrument cluster
Owners Manual_USA_M0C052_en
*1: These lights turn on when the power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is
started, or after a few seconds.
There may be a malfunction in a
system if the light does not come
on, or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the multi-informatio n display with a
message.
*3: Intuitive parking assist OFF indi- cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
(Flashes)
Rear differential lock
indicator (if equipped)
( P.506)
Tire pressure warning
light
*1 (  P.506)
Low fuel level warn-
ing light ( P.507)
Driver’s and front pas-
senger’s seat belt
reminder light
(  P.507)
Rear passengers’ seat
belt reminder lights
(  P.507)
Air suspension mal-
function indicator (if
equipped) ( P.508)
Trailer brake warning
light ( P.508)
WARNING
■If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
hybrid system, this could mean
that these system s are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by you r Toyota dealer
immediately if this occurs.

902-1. Instrument cluster
Owners Manual_USA_M0C052_en
*1: This light illuminates on the multi-information display with a
message.
*2: Depending on the operating con-ditions of the system, the color
and state (illuminat ed/blinking) of
the indicator change.
*3: The light comes on when the system is turned off.
*4: Intuitive parking assist OFF indi-cator turns on wh en the power
switch is turned t o ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
*5: These lights tu rn on when the
power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is
started, or after a few seconds.
There may be a malfunction in a
system if the lights do not turn
on, or turn off. Have the vehicle
inspected by your Toyota dealer.
*6: This light illuminates on the out- side rear view mirrors.
*7: This light illuminates on the over-head console.
*8: When the outside temperature is approximately 37°F (3°C) or
lower, the indicator will flash for
approximately 10 seconds, then
stay on.
“COMFORT” mode indi-
cator (if equipped)
(
 P.358)
“CUSTOM” mode indica-
tor (if equipped) ( P.358)
Downhill assist control
system indicator
*6 (if
equipped) ( P.372)
Air suspension indicator
(if equipped) ( P.355)
“4H” indicator (if
equipped) ( P.361)
“4L” indicator (if
equipped) ( P.361)
“AUTO LSD” indicator
*5
(if equipped) ( P.363)
Rear differential lock indi-
cator (if equipped)
(  P.364)
Crawl Contro l indicator
*5
(if equipped) ( P.365)
Crawl Control speed level
indicator (if equipped)
(  P.365)
AUTO mode indicator (if
equipped) ( P.369)
DIRT mode indicator (if
equipped) ( P.369)
SAND mode indicator (if
equipped) ( P.369)
MUD mode indicator (if
equipped) ( P.369)
DEEP SNOW mode indi-
cator (if equipped)
(  P.369)
“TOW HAUL” indicator
(  P.203)
“TOW+” indicator
( P.203)
“AIR BAG ON/OFF”
indicator
*3, 7 (  P. 4 6 )

1774-1. Before driving
Owners Manual_USA_M0C052_en
4
Driving
When the following unusual
operation is performed with the
accelerator pedal depressed,
the hybrid system output may be
restrained.
• When the shift lever is shifted to R
*.
• When the shift lever is shifted
from P or R to forward drive
shift position such as D
*.
When the system o perates, a mes-
sage appears on the multi-informa-
tion display. Read the message and
follow the instruction.
*: Depending on the situation, the shift position may not be
changed.
■Drive-Start Control (DSC)
When the TRAC is turned off
(  P.376), sudden start restraint
control also does not operate. If
your vehicle have trouble escaping
from the mud or fr esh snow due to
sudden start restraint operation,
deactivate TRAC ( P.376) so that
the vehicle may become able to
escape from the mud or fresh snow.
Also, sudden start restraint control
will not operate in the following con-
ditions:
●When the front-wheel drive control
switch is in “4H” or “4L” position.
(4WD models only)
●When AUTO LSD mode, the drive
start control does not operate. (if
equipped)
●When Multi-terrain Select is
selected. (if equipped)
NOTICE
■If you get a flat tire while driv-
ing
A flat or damaged tire may cause
the following situations. Hold the
steering wheel firmly and gradu-
ally depress the brake pedal to
slow down the vehicle.
●It may be difficult to control your
vehicle.
●The vehicle will make abnormal
sounds or vibrations.
●The vehicle will lean abnor-
mally.
Information on what to do in case
of a flat tire ( P.515)
■When encountering flooded
roads
Do not drive on a road that has
flooded after heavy rain, etc.
Doing so may cause the following
serious damage to the vehicle:
●Engine stalling
●Short in electrical components
●Engine damage caused by
water immersion
In the event that you drive on a
flooded road an d the vehicle
becomes flooded or stuck in mud
or sand, be sure to have your Toy-
ota dealer check the following:
●Brake function
●Changes in quantity and quality
of oil and fluid used for the
engine, transmission, transfer
(4WD vehicles), differential, etc.
●Lubricant condition for the pro-
peller shaft, bearings and sus-
pension joints (where possible),
and the function of all joints,
bearings, etc.
Sudden start restraint
control (Drive-Start Con-
trol [DSC])

1934-1. Before driving
Owners Manual_USA_M0C052_en
4
Driving
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s hybrid
system may overheat on hot
days (at temperatures over
85°F [30°C]) when driving up
a long or steep grade. If the
engine coolant temperature
gauge indicates overheating,
immediately turn off the air
conditioning (if in use), pull
your vehicle off the road and
stop in a safe spot. ( P.535)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Apply the parking
brake firmly, and put the
transmission in P. Avoid park-
ing on a slope, but if unavoid-
able, do so only after
performing the following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.
4 Apply the parking brake
firmly.
5 Shift into P and turn off the
hybrid system. 
When restarting after parking
on a slope:
1 With the transmission in P,
start the hybrid system. Be
sure to keep the brake pedal
pressed.
2 Shift into a forward gear. If
reversing, shift into R.
3 If the parking brake is in man-
ual mode, release the park-
ing brake. ( P.205)
4 Release the brake pedal, and
slowly pull or back away from
the wheel blocks. Stop and
apply the brakes.
5 Have someone retrieve the
blocks.
■Break-in schedule
If your vehicle is new or equipped
with any new power train compo-
nents (such as an engine, transmis-
sion, transfer [4WD models], rear
differential or wheel bearing), Toyota
recommends that y ou do not tow a
trailer until the vehicle has been
driven for over 500 miles (800 km).
After the vehicle has been driven for
over 500 miles (800 km), you can
start towing. However, for the next
500 miles (800 km), drive the vehi-
cle at a speed of less than 50 mph
(80 km/h) when towing a trailer, and
avoid full throttle acceleration.
■Maintenance
●If you tow a trailer, your vehicle
will require more fr equent mainte-
nance due to the additional load.
(See “Owner’s Warranty Informa-
tion Booklet” or “Scheduled Main-
tenance Guide” / “Owner’s Manual
Supplement”.)
●Retighten the fixing bolts of the
towing ball and bracket after

2654-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
■Automatic cancelation of vehi-
cle-to-vehicle d istance control
mode
Vehicle-to-vehicle distance control
mode is automatically canceled in
the following situations.
●VSC is activated.
●TRAC is activated for a period of
time.
●When the VSC or TRAC system is
turned off.
●The sensor cannot detect cor-
rectly because i t is covered in
some way.
●When the brake control or output
restriction control of a driving sup-
port system operates. (For exam-
ple: Pre-Collision System, Drive-
Start Control)
●The center differential lock/unlock
is not completed within 5 seconds
while the cruise con trol system is
on.
●The parking brake is operated.
●The vehicle is stopped by system
control on a steep incline.
●The following are detected when
the vehicle has been stopped by
system control:
• The driver is not wearing a seat belt.
• The driver’s door is opened.
• The vehicle has been stopped for
about 3 minutes.
If vehicle-to-vehicle distance control
mode is automatically canceled for
any reasons other than the above,
there may be a malfunction in the
system. Contact your Toyota dealer.
■Automatic cancelation of con-
stant speed control mode
Constant speed control mode is
automatically cance led in the follow-
ing situations:
●Actual vehicle speed is more than
approximately 10 mph (16 km/h)
below the set vehicle speed.
●Actual vehicle speed falls below approximately 20 mph (30 km/h).
●VSC is activated.
●TRAC is activated for a period of
time.
●When the VSC or TRAC system is
turned off.
●When the brake control or output
restriction control of a driving sup-
port system operates. (For exam-
ple: Pre-Collision System, Drive-
Start Control)
●The center differe
ntial lock/unlock
is not completed within 5 seconds
while the cruise control system is
on.
●The parking brake is operated.
If constant speed control mode is
automatically canceled for any rea-
sons other than the above, there
may be a malfunction in the system.
Contact your Toyota dealer.
■Brake operation
A brake operation sound may be
heard and the brake pedal response
may change, but these are not mal-
functions.
■Warning messages and buzzers
for dynamic radar cruise con-
trol with full-speed range
Warning messages and buzzers are
used to indicate a system malfunc-
tion or to inform the driver of the
need for caution while driving. If a
warning message is shown on the
multi-information display, read the
message and follow the instruc-
tions.( P.228, 511)
■When the sensor may not be
correctly detecting the vehicle
ahead
In the case of the following and
depending on the conditions, oper-
ate the brake pedal when decelera-
tion of the system is insufficient or
operate the accelerator pedal when
acceleration is required.
As the sensor may not be able to
correctly detect th ese types of vehi-

2724-5. Using the driving support systems
Owners Manual_USA_M0C052_en
Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of
the vehicle
*1
Approximately 3.3 ft. (1 m) forward of the rear bumper
Approximately 9.8 ft. (3 m) from the rear bumper
Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear
bumper
*2
 When towing a trailer
The range of each detection area is:
Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either s ide of
the vehicle
*1
Approximately 3.3 ft. (1 m) forward of the rear bumper
Trailer overall length
*3
Approximately 9.8 ft. (3 m) from the rear end of trailer*3
*1: The area between the side of the vehicle and 1.6 ft. (0.5 m) f rom the side
of the vehicle cannot be detected.
*2: The outer mirror indicator warning may be delayed. The delay i ncreases
in proportion to the speed differential with vehicles approaching in the
adjacent lane.
*3: The system does not support trailers wider than 8.5 ft. (2.59 m) and/or
longer than 39 ft. (12.0 m). For box trailers and certain other trailer types
that are up to 8.5 ft. (2.59 m) wide and/or 39 ft. (12.0 m) lon g, the indica-
tor warning in t he outer mirror may be de layed if the vehicle in the adja-
cent lane overtakes your vehicle at a high-speed differential.
■The Blind Spot Monitor is oper-
ational when
The Blind Spot Monitor is opera-
tional when all of the following con- ditions are met:●The Blind Spot Monitor is on.
●The shift position
is in a position
other than R.

3634-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
*: If equipped
Press the switch to turn the sys-
tem on/off.
At this time, the rear differential lock
indicator and indicator in the differ-
ential lock/unlock display will blink.
Wait a few seconds for the system
to complete operation. After the
rear different ial is locked, the indi-
cators will stop blinking and remain
on.
To unlock the rear differential, push
the switch again.
■Operating tips
●Be sure to stop the wheels before
locking the differential.
●Unlock the differential as soon as the vehicle moves out.
■Unlocking the rear differential
If the rear different ial lock indicator
still flashes even a fter unlocking the
rear differential, check the safety of
the surrounding area and slightly
turn the steering wheel in either
direction while the vehicle is in
motion.
■Automatic unlocking feature
The rear different ial lock is also
unlocked in any of the following situ-
ations:
●When the front-wheel drive control
switch is turned to “2H” or “4H”
●When the power switch is turned
off
■After unlocking the rear differ-
ential
Check that the indicators go off.
■The rear different ial lock indica-
tor and indicator in the differen-
tial lock/unlock display
●The indicators blink while lock-
ing/unlocking the rear differential.
●If the indicators c ontinue to blink
when you operate the rear differ-
ential lock switch, stop the vehicle
completely and operate the switch
again.
If the indicators continue to blink
even if doing so, have the vehicle
inspected by your Toyota dealer as
soon as possible. There may be a
trouble in the four-wheel drive sys-
tem.
■Locking the rear differential
The following systems do not oper-
ate when the rear differential is
locked.
• ABS
• Brake assist system
• VSC
• Downhill assist control system (if equipped)
•TRAC
Rear differential lock
system*
Use the rear differential lock
system only when wheel
spinning occurs in a ditch
or on a slippery or ragged
surface. This system is
effective in case one of the
rear wheels is spinning.
Rear differential lock
switch