2018 TOYOTA TUNDRA horn

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

2744-5. Using the driving support systems
WARNING
■Sensor detection information
Pay particular attention to the following instances in where th is may occur.
Failing to do so way result in the vehicle being unable to be d riven or parked
safety and possibly cause an accident.
● The sensor’s detection areas are limited to the areas around the vehicle’s
front corner and rear bumpers.
● Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances
where this may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
• The sensor is frozen. (Thawing the area will resolve this prob lem.)
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, mot orcycle
engines, air brakes of large vehicles, or other loud noises pro ducing
ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the
vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or radio antenna.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Toyota suspension (lowered suspension, etc.) is installed.
• A backlit license plate, license plate holder, etc., are insta lled.
• People may not be detected if they are wearing certain types a nd color-
ing of clothing.
• People, animals, and moving objects may not be able to be detected.
In addition to the examples above, there are instances in which , because of
their shape, signs and other objects may be judged by the senso r to be
closer than they are.

5808-2. Steps to take in an emergency
If the engine will not star t
One of the following may be the cause of the problem:
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
Flex-fuel vehicles: The type of fuel may be different. When ref uel-
ing, add the same type of fuel, if available.
After adding a different type of fuel, the engine may run roughly and
driving performance may be reduced for a while when the engine is
first started. In this case, wa it until the engine runs normall y.
● The engine may be flooded.
Try to restart the engine again following correct starting proc edures.
(  P. 195)
● There may be a malf unction in the engine immobilizer system.
(  P. 7 6 )
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 582)
● The battery terminal connecti ons may be loose or corroded.
If the engine will not start eve n though correct starting proce -
dures are being followed ( P. 195), consider each of the follow-
ing points.
The engine will not start even t hough the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and he ad-
lights are dim, or the horn does not sound or sounds at a low
volume.

5818-2. Steps to take in an emergency
8
When trouble arises
One of the following may be the cause of the problem:
● One or both of the battery t erminals may be disconnected.
● The battery may be discharged. ( P. 582)
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
The starter motor does not turn over, the interior lights and h ead-
lights do not turn on, o r the horn does not sound.

655What to do if... (Troubleshooting)
●It is locked to prevent theft of the vehicle if the key is removed from the
engine switch. ( P. 196)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be oper-
ated if the window lock switch is pressed. ( P. 147)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 548)
●The parking brake indicator is on
Is the parking brake released? ( P. 205)
Depending on the situation, other types of warning buzzer may also sound.
( P. 547, 555)
●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 85)
To stop the alarm, turn the engine switch to the “ACC” or “ON” position, or
start the engine.
●When a warning light turns on or a warning message is displayed , refer to
P. 547, 555.
The steering wheel cannot be turned after the engine is
stopped
The windows do not open or close by operating the power
window switches
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning light turns on or a warning message is displayed

662Alphabetical index
Hands-free system (for cellular phone)........ 363, 370
Head restraints ........................ 132
Headlights ................................ 206 Automatic High Beam ........... 211
Light switch ........................... 206
Replacing light bulbs............. 523
Wattage ................................ 609
Heaters Automatic air conditioning
system ......... ....................... 419
Manual air conditioning system ......... ....................... 412
Outside rear view mirrors ........................ 414, 421
Seat heaters ......................... 426
High mounted stoplight Replacing .............................. 534
Wattage ................................ 609
Hood ......................................... 484
Hooks Deck hooks ........................... 449
Retaining hooks (floor mat)..... 28
Horn .......................................... 137 I/M test ...................................... 481
Identification
Engine .................................. 600
Tire ....................................... 615
Vehicle .................................. 600
Ignition switch (engine switch) ...................... 195
Ignition switch light (engine switch light) ............. 429
Illuminated entry system ........ 431
Immobilizer system ................... 76
Indicators ................................... 92
Initialization
Maintenance ......................... 477
Moon roof ............................. 156
Tire pressure warning system .... .............. 497
Inside rear view mirror ............ 139
Instrument panel light control ...................................... 97
Interior lights ........................... 429 Personal lights ...................... 430
Switches ............................... 430
Wattage ................................ 609
Intuitive parking assist ........... 270
Function ................................ 270
Warning message......... 557, 558
HI