2008 TOYOTA TUNDRA towing

484
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
kg (lb.)
Model code
∗ 6EngineCab typeDriving
systemBed type
GCWRTowing capacity
With towing packageWithout tow-ing packageWith towing packageWithout tow-ing package
GSK51L− CRASKA1GR−FE∗
1
Double
2WD∗4Standard—4535 (10000)—2175 (4800)
UCK51L− CRASKA
2UZ−FE∗
2
2WD∗4Standard6120 (13500)5440 (12000)3670 (8100)3035 (6700)
UCK51L− CRALKA6120 (13500)5440 (12000)3670 (8100)2990 (6600)
UCK52L−CHASKALong6120 (13500)—3625 (8000)—
UCK56L−CRASKA
4WD∗
5Standard6120 (13500)5440 (12000)3535 (7800)2900 (6400)
UCK56L− CRALKA6120 (13500)5440 (12000)3535 (7800)2855 (6300)
UCK57L−CHASKALong6120 (13500)—3490 (7700)—
USK51L−CRTSKA
3UR−FE∗
3
2WD∗4Standard7255 (16000)6350 (14000)4805 (10600)3900 (8600)
USK51L− CRTLKA7255 (16000)6350 (14000)4805 (10600)3900 (8600)
USK52L−CHTSKALong7255 (16000)—4760 (10500)—
USK56L−CRTSKA
4WD∗
5Standard7255 (16000)6350 (14000)4670 (10300)3760 (8300)
USK56L− CRTLKA7255 (16000)6350 (14000)4670 (10300)3760 (8300)
USK57L−CHTSKALong7255 (16000)—4625 (10200)—
∗
1: 4.0 L V6 (1GR −FE) engine∗
2: 4.7 L V8 (2UZ −FE) engine∗
3: 5.7 L V8 (3UR −FE) engine∗
4:Two −wheel drive models∗
5: Four −wheel drive models∗
6: The model code is indicated on the Certification Label. See “Your Toyota’s identification” on page 455 in Section 2 for the Ce rtifica-
tion Label location.

485
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
kg (lb.)
Model code
∗ 5EngineCab typeDriving
systemBed type
GCWRTowing capacity
With towing packageWithout tow-ing packageWith towing packageWithout tow-ing package
UCK51L− PSASKA
2UZ−FE∗
1
Crew Max
2WD∗3
Short
6120 (13500)5440 (12000)3625 (8000)2945 (6500)
UCK51L− PSALKA6120 (13500)5440 (12000)3625 (8000)2945 (6500)
UCK56L−PSASKA4WD∗
46120 (13500)5440 (12000)3490 (7700)2810 (6200)
UCK56L− PSALKA6120 (13500)5440 (12000)3490 (7700)2810 (6200)
USK51L−PSTSKA
3UR−FE∗
2
2WD∗37255 (16000)6350 (14000)4715 (10400)3810 (8400)
USK51L− PSTLKA7255 (16000)6350 (14000)4715 (10400)3810 (8400)
USK56L−PSTSKA4WD∗
47255 (16000)6350 (14000)4580 (10100)3670 (8100)
USK56L− PSTLKA7255 (16000)6350 (14000)4580 (10100)3670 (8100)
∗
1: 4.7 L V8 (2UZ −FE) engine∗
2: 5.7 L V8 (3UR −FE) engine∗
3:Two −wheel drive models∗
4: Four −wheel drive models∗
5: The model code is indicated on the Certification Label. See “Your Toyota’s identification” on page 455 in Section 2 for the Ce rtifica-
tion Label location.

486
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
CAUTION
The gross trailer weight must never
exceed towing capacity described in
the table on page 483.
The gross combination weight must
never exceed the GCWR described
in the table on page 483.
The gross vehicle weight must nev-
er exceed the GVWR indicated the
Certification Label as shown.
The gross axle weight on each axle
must never exceed the GAWR indi-
cated the Certification Label as
shown.
Exceeding the towing capacity,
GVWR, GCWR or GAWR can cause
an accident resulting in death or
serious personal injuries.
XS20010
Certification Label
XS30012
Gross trailer weight Tongue load
Tongue load
Gross trailer weight 
100 = [9to11]%
Conventional towing
XS30013a
Gross trailer weight
King pin weight
Gross trailer weight 
100 = [15 to 25]%
King pin weight
Fifth wheel towing

487
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
CAUTION
A recommended tongue load or
king pin weight varies in accor-
dance with the types of trailers or
towing as described below.
In order to ensure the recom-
mended values shown below, the
trailer must be loaded by referring
to the following instructions.
1. Conventional Towing
The tongue load is 9 to 11 % of
the Gross Trailer weight.
If the gross trailer weight is over
907 kg (2000 lbs), it is necessary
to use a sway control device with
sufficient capacity.
If the gross trailer weight is over
2268 kg (5000 lbs), it is necessary
to use a weight distributing hitch
with sufficient capacity.
If using a weight distributing
hitch when towing, keep your ve-
hicle level with the ground.
2. Fifth wheel TowingThe king pin weight is 15 to 25
% of the Gross Trailer weight.
Current fifthwheel trailer designs
are not compatible with Short bed
(Crew Max models).Trailer hitch assemblies have differ-
ent weight capacities established by
the hitch manufacturer. Even though
the vehicle may be physically capa-
ble of towing a higher weight, the
operator must determine the maxi-
mum weight rating of the particular
hitch assembly and never exceed
the maximum weight rating speci-
fied for the trailerhitch. Exceeding
the maximum weight rating set by
the trailer hitch manufacturer can
cause an accident resulting in death
or serious personal injuries.

488
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
HITCHES
If you wish to install a trailer hitch, you
should consult with your Toyota dealer.
Use only a hitch recommended by the
hitch manufacturer and the one which
conforms to the gross trailer weight
requirement.
The hitch must be bolted securely to
the vehicle frame and installed accord-
ing to the hitch manufacturer ’s instruc-
tions.
The hitch ball and king pin should have
a light coat of grease.
Toyota recommends removing the trail-
er hitch whenever you are not towing
a trailer to reduce the possibility of
additional damage caused by the hitch
if your vehicle is struck from behind.
After removing the hitch, seal any
mounting holes in the vehicle body to
prevent entry of pollutants such as ex-
haust fumes, dirt, water, etc. TRAILER BALL
Follow these easy steps to properly deter-
mine the correct trailer ball for your ap-
plication:
1. Determine the correct trailer ball size for the trailer coupler. Most couplers
are stamped with the required trailer
ball size. The sizes you will most likely
find stamped on the coupler are:
Trailer class
Typical trailer ball size
IV2 5/16 in.
II and III2 in.
I1 7/8 in.
2. Select the appropriate trailer ball to match or exceed the gross trailer
weight rating of the trailer. The trailer
ball load rating should be printed on
the top of the ball.
3. When mounted in the ball mount, the threaded ball shank must protrude be-
yond the bottom of the lock washer
and nut at least 2 threads. The trailer
ball shank must be matched to the ball
mount hole diameter size.
LS30011
1 Trailer ball load rating
2 Ball diameter
3 Shank length
4 Shank diameter

489
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS30001
BUMPER TOWING (steel bumper only)
The rear bumper of your vehicle is
equipped with a hole to install a trailer
ball.
For details, contact your Toyota dealer.
CAUTION
The gross trailer weight (trailer
weight plus cargo weight) when tow-
ing with the bumper must never ex-
ceed 2268 kg (5000 lb.).
XS30002
FIFTH WHEEL TRAILER
NOTICE
When towing a fifth wheel trailer, be
careful not to hit the cabin or deck
by the trailer while making a sharp
turn.
MATCHING TRAILER BALL HEIGHT TO
TRAILER COUPLER HEIGHT
No matter which class of tow hitch ap-
plies, for a safe trailer hookup, the trailer
ball setup on must be the proper height
for the coupler on the trailer.

490
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS30003
XS30004
1. Coupler
2. Trailer ball
BRAKES AND SAFETY CHAINS
Toyota recommends trailers with
brakes that conform to any applica-
ble federal and state/provincial regu-
lations.
A safety chain must always be used
between the towing vehicle and the
trailer. Leave sufficient slack in the
chain for turns. The chain should
cross under the trailer tongue to
prevent the tongue from dropping to
the ground in case it becomes dam-
aged or separated. For correct safety
chain procedures, follow the hitch or
trailer manufacturer ’s recommenda-
tions.
CAUTION
If the gross trailer weight exceeds
453 kg (1000 lb.), trailer brakes are
required.
Never tap into your vehicle’s hy-
draulic system as it would lower its
braking effectiveness.
Never tow a trailer without using a
safety chain securely attached to
both the trailer and the vehicle. If
damage occurs to the coupling unit
or hitch ball, there is danger of the
trailer wandering over into another
lane.

491
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS30014aTrim board
Clip
Scuff
plate Connector
cover
SERVICE CONNECTOR FOR TOWING
BRAKE CONTROLLER (with towing
package)
Your vehicle is equipped with a service
connector for the trailer brake controller
as shown.
Access the service connector.
1. Remove the scuff plate.
2. Remove the clip (screw type) and trim board.
Remove the connector cover from the ser-
vice connector before connecting the con-
nector.
Link the connector to the trailer brake
controller via the sub wire harness stored
in the glove box. The detailed explanation
of the sub wire harness circuit is packed
together with the sub wire harness.
Be sure to position the trailer brake con-
troller where it does not prevent the driver
from operating the pedal.
Toyota recommends that the sub wire har-
ness be stored in the glove box when it
is not in use. TIRES
Ensure that your vehicle’s tires are
properly inflated. See page 553 in Sec-
tion 7
−2 and page 594 in Section 8 for
instructions.
The trailer tires should be inflated to
the pressure recommended by the trail-
er manufacturer in respect to the gross
trailer weight.