2018 TOYOTA TUNDRA ECU

1273-3. Adjusting the seats
3
Operation of each component
WARNING
■When raising the bottom cushion
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Do not raise the bottom cushion while driving.
● Stop the vehicle on level ground, set the parking brake and shi ft the shift
lever to P.
■ When bottom cushion is raised
Do not allow passengers to sit on raised bottom cushion or plac e anything
on storage box (Double Cab models) while driving.
■ When returning the seats to their original position
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Be careful not to get your hands or feet pinched in the seat.
● Make sure the bottom cushions are securely locked.
● Check that the seat belts are not twisted or caught in the seat .
● Arrange the seat belts in the proper positions for ready use.
● Make sure that there are no objects under the seat cushion or on the load-
ing floor.
NOTICE
■Before raising the bottom cushion
● Make sure that there are no objects, such as cushions, on the seat cush-
ion.
● The seat belts must be stowed.

1363-4. Adjusting the steering wheel and mirrors
Steering wheel
Hold the steering wheel and
push the lever down.
Vehicles with front bench type seat
Adjust to the ideal position by
moving the steering wheel.
After adjustment, pull the lever up
to secure the steering wheel.
Vehicles with front separate type seats
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
Adjustment procedure (manually adjustable type)
1
2
2

1373-4. Adjusting the steering wheel and mirrors
3
Operation of each component
Operating the switch moves the steering wheel in the following direc-
tions:
Up
Down
Toward the driver
Away from the driver
To sound the horn, press on or
close to the mark.
■ After adjusting the steering wheel (manual adjustable type)
Make sure that the steering wheel is securely locked.
The horn may not sound if the steer ing wheel is not securely locked.
( P. 136)
Adjustment procedure (power-adjustable type)
1
2
3
4
Horn

1383-4. Adjusting the steering wheel and mirrors
When the key is removed from the
engine switch, the steering wheel
returns to its stowed position by
moving up and away to enable
easier driver enter and exit.
Inserting the key into the engine
switch returns the steering wheel
to its original position.
■The steering wheel can be adjusted when (power adjustable type)
The engine switch is in the “ON” position.
■ Automatic adjustment of the stee ring position (power adjustable type)
A desired steering position can be entered to memory and recall ed automati-
cally by the driving position memory system. ( P. 128)
■ Power easy access system (vehicles with driving position memory )
The steering wheel and driver’s seat move in accordance with en gine switch
position and the driver’s seat belt condition. ( P. 128)
Auto tilt away (power-adjustable type)
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and caus e an acci-
dent, resulting in death or serious injury.
■ After adjusting the steering wheel (manually adjustable type)
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causi ng an
accident and resulting in death or serious injury.

1503-5. Opening, closing the windows and moon roof
Back window
Open/close
Push the lock release lever and
slide the back window.
■Closing the back window
Make sure that the back window is securely closed after closing it.
: If equipped
Opening and closing
WARNING
■Caution while driving
Keep the back window closed.
This not only keeps personal belongings from being thrown out, but also
prevents exhaust gases from entering the vehicle.

1654-1. Before driving
4
Driving
WARNING
■If you hear a squealing or scrap ing noise (brake pad wear limit indica-
tors)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
Rotor damage may result if the pads are not replaced when neede d.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not race the engine.
If the vehicle is in any gear other than P or N, the vehicle may move sud-
denly and unexpectedly, causing an accident.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and app ly the
parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent ac cidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped m ay cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■ When the vehicle is parked
● Do not leave glasses, cigarette lighters, spray cans, or soft d rink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may le ad to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to deform or crack.
• Soft drink cans may rupture, causing the contents to spray ove r the
interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.
● Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit acci dentally when
luggage is loaded or the seat is adjusted, causing a fire.
● Do not attach adhesive discs to the windshield or windows. Do n ot place
containers such as air fresheners on the instrument panel or da shboard.
Adhesive discs or containers may act as lenses, causing a fire in the vehi-
cle.

1664-1. Before driving
WARNING
●Do not leave a door or window open if the curved glass is coate d with a
metallized film such as a silver-colored one. Reflected sunligh t may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift lever to P, stop the engine
and lock the vehicle.
Do not leave the vehicle unattended while the engine is running .
If the vehicle is parked with the shift lever in P but the park ing brake is not
set, the vehicle may start to move, possibly leading to an acci dent.
● Do not touch the exhaust pipes while the engine is running or i mmediately
after turning the engine off.
Doing so may cause burns.
● 4WD models: If the shift lever is moved before the “4LO” indicator turns
on/off, the transfer mode may not be shifted completely. The tr ansfer mode
disengages both the front and rear driveshafts from the powertrain and
allows the vehicle to move regardless of the shift position. (A t this time, the
indicator blinks and the buzzer sounds.)
Therefore, the vehicle is free to roll even if the automatic transmission is in
P. You or someone else could be seriously injured. You must complete the
shifting of the transfer mode. ( P. 296)
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an acc ident or fire
due to engine overheating. Additionally, if the vehicle is park ed in a poorly
ventilated area, exhaust gases may collect and enter the vehicl e, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this ma y cause
one side of the vehicle to brake differently than the other sid e. Also, the
parking brake may not securely hold the vehicle.
● If the power brake assist function does not operate, do not fol low other
vehicles closely and avoid hills or sharp turns that require br aking.
In this case, braking is still possible, but the brake pedal sh ould be
depressed more firmly than usual. Also, the braking distance wi ll increase.
Have your brakes fixed immediately.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking dist ance will
increase. Have your brakes fixed immediately.

1704-1. Before driving
WARNING
■Things that must not be carried in the luggage compartment
The following things may cause a fire if loaded in the luggage compart-
ment:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failure to do so may prevent the pedals from being depressed pr operly,
may block the driver’s vision, or may result in items hitting t he driver or
passengers, possibly causing an accident.
●Do not stack anything behind the front seats higher than the se at-
backs.
●Do not place cargo or luggage in or on the following locations.
• At the feet of the driver
• On the front passenger or rea r seats (when stacking items)
• On the instrument panel
• On the dashboard
• On the auxiliary box or tray that has no lid
●Secure all items in the occupant compartment.
●Never allow anyone to ride in the rear deck. It is not designed for pas-
sengers. They should ride in thei r seats with their seat belts properly
fastened. Otherwise, they are much more likely to suffer death or seri-
ous bodily injury, in the event of sudden braking, sudden swerv ing or
an accident.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehic le
weight rating.
●Even if the total load of occupant’s weight and the cargo load is less
than the total load capacity, d o not apply the load unevenly. I mproper
loading may cause deterioration of steering or braking control which
may cause death or serious injury.