2012 TOYOTA TUNDRA towing

292 2-5. Driving information
CAUTION
■To avoid accident or injury
●Do not make jerky, abrupt or sharp turns.
● Do not apply the brakes suddenly as you may skid, resulting in jackknifing
and loss of vehicle control. This is especially true on wet or slippery sur-
faces.
● Do not exceed the trailer hitch assembly weight, gross vehicle weight,
gross axle weight and trailer tongue weight capacities.
● Do not use cruise control when towing.
● Slow down and downshift before descending steep or long downhill
grades. Do not make sudden downshifts while descending steep or long
downhill grades.
● Vehicle-trailer instability is more likely on steep long downhills. Before
descending steep or long downhill grades, slow down and downshift. Do
not make sudden downshifts when descending steep or long downhill
grades. Avoid holding the brake pedal down too long or applying the
brakes too frequently. This could cause the brakes to overheat and result
in reduced braking efficiency.
● Do not tow a trailer when the temporary spare tire is installed on your vehi-
cle.
■ Hitch
Trailer hitch assemblies have different weight capacities established by the
hitch manufacturer. Even though the vehicle may be physically capable of
towing a higher weight, the operator must determine the maximum weight
rating of the particular hitch assembly and never exceed the maximum
weight rating specified for the trailer-hitch. Exceeding the maximum weight
rating set by the trailer-hitch manufacturer can cause an accident resulting in
death or serious personal injuries.

293
2-5. Driving information
2
When driving
CAUTION
■
When towing a trailer
Toyota recommends trailers with brakes that conform to any applicable fed-
eral and state/provincial regulations.
● If the gross trailer weight exceeds unbraked TWR, trailer brakes are
required. Toyota recommends trailers wi th brakes that conform to all appli-
cable federal and state/provincial regulations.
● Never tap into your vehicle’s hydraulic system, as this will lower the vehi-
cle’s 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 into another lane.
NOTICE
■When installing a trailer hitch
Use only the position recommended by your Toyota dealer. Do not install the
trailer hitch on the bumper; this may cause body damage.
■ Do not directly splice trailer lights
Do not directly splice trailer lights. Directly splicing trailer lights may damage
your vehicle’s electrical system and cause a malfunction.
■ When towing a fifth wheel trailer
Be careful not to hit the cabin or bed with
the trailer while making a sharp turn.

294
2-5. Driving information
Dinghy towing
NOTICE
■To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
Your vehicle is not designed to be dinghy towed (with 4 wheels on
the ground) behind a motor home.

483
3-7. Using the
storage features
3
Interior and exterior features
Auxiliary boxes
Front door Press the knob and open the lid.
Front bench type seat (type A) Pull the strap.
NOTICE
■Items that should not be stowed in the bottle holders
Put the cap on before stowing a bottle. Do not place open bottles in the bot-
tle holders, or glasses and paper cups containing liquid. The contents may
spill and glasses may break.
Bottle holders and auxiliary boxes

581
4-3. Do-it-yourself maintenance
4
Maintenance and care
10 STOP
15 AStop lights, high mounted stop-
light, vehicle stability control sys-
tem, anti-lock brake system, shift
lock system, multiport fuel injection
system/sequential multiport fuel
injection system, towing converter
11 TOW BRK 30 A Trailer brake controller
12 IMB 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system
13 AM2 7.5 A Starting system
14 TOWING 30 A Towing converter
15 AI PMP HTR 10 A Air injection system
16 ALT-S 5 A Charging system
17 TURN-HAZ 15 A Turn signal lights, emergency
flashers, towing converter
18 F/PMP 25 A Fuel system
19 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, electric throttle control sys-
tem
20 MET-B 5 A Gauges and meters
21 AMP 30 AAudio system, rear view monitor,
navigation system, rear seat enter-
tainment system
22 RAD NO.1 15 A Audio system, rear view monitor,
navigation system, rear seat enter-
tainment system
FuseAmpereCircuit

583
4-3. Do-it-yourself maintenance
4
Maintenance and care
*: Replace the fuse with one of the same ampere rating as the original.
37 DEFOG 40 A Back window defogger
38 SUB BATT 40 A Trailer towing
39 ABS1 50 A
Anti-lock brake system, vehicle sta-
bility control system
40 ABS2 40 A Anti-lock brake system, vehicle sta-
bility control system
41 ST 30 A Starting system
42 HTR 50 A Air conditioning system
43 LH-J/B 150 A AM1, TAIL, PANEL, ACC, CIG, LH-
IG, 4WD, ECU-IG No.1, BK/UP LP,
SEAT-HTR, A/C IG, ECU-IG No.2,
WSH, WIPER, OBD, A/C, TI&TE,
FR P/SEAT RH, MIR, DR/LCK, FR
P/SEAT LH, CARGO LP, PWR
OUTLET, POWER No.1 fuses
44 ALT 180 A
*LH-J/B, HTR, SUB BATT, TOW
BRK, STOP, FOG, TOW TAIL,
DEICER fuses
140 A
*
45 A/PUMP NO.1 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
46 A/PUMP NO.2 50 A Multiport fuel injection system/
sequential multiport fuel injection
system
47 MAIN 40 A HEAD LL, HEAD RL,
HEAD LH, HEAD RH fuses
FuseAmpereCircuit

585
4-3. Do-it-yourself maintenance
4
Maintenance and care
14 ECU-IG No.1 7.5 A
Anti-lock brake system, vehicle sta-
bility control system, multiplex com-
munication system, intuitive
parking assist system, power front
driver’s seat, power tilt and power
telescopic, shift lock, tire pressure
warning system, accessory meter,
trailer towing, power outlet, electric
moon roof
15 LH-IG 7.5 A Back-up lights, charging system,
gauges and meters, turn signal
lights, air conditioning system, seat
heaters, back window defogger
16 4WD 20 A Four-wheel drive control system
17 WSH 20 A Window washer
18 WIPER 30 A Wiper and washer
19 ECU-IG No.2 7.5 A Multiplex communication system,
power steering
20 TAIL 15 A Tail lights, trailer lights (tail lights),
parking lights, outer foot lights
21 A/C IG 10 A Air conditioning system
22 TOW BK/UP 7.5 A Trailer lights
23 SEAT-HTR 20 A Seat heaters or heater and venti-
lated seats
24 PANEL 7.5 A Instrument panel lights, glove box
light, accessory meter, audio sys-
tem, rear view monitor, navigation
system, rear seat entertainment
system, gauges and meters, air
conditioning system
FuseAmpereCircuit

5
When trouble arises
601
5-1. Essential information
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Contact
your Toyota dealer before towing.
● The engine is running, but the vehicle will not move.
● The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be
temporarily towed using a cable or chain secured to the emergency
towing eyelet. This should only attempted on hard, surfaced roads for
short distances at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.
Type A Towing eyelet
If towing is necessary, we recommend having your vehicle towed by
your Toyota dealer or a commerci al towing service, using a lift-type
truck or a flat bed truck.
Use a safety chain system for all to wing, and abide by all state/pro-
vincial and local laws.
The wheels and axle on the groun d must be in good condition.
If they are damaged, use a towing dolly or flat bed truck.