Page 270 of 672
2704-5. Using the driving support systems
Intuitive parking assist
■Types of sensors
■Intuitive parking assist switch
Turns  the  intuitive  parking
assist on/off
When  on,  the  indicator  light
comes  on  to  inform  the  driver
that the system is operational.
: If equipped
The distance from your vehicle to nearby obstacles when paral-
lel  parking  or  maneuvering  into  a  garage  is  measured  by  the
sensors  and  communicated  via  t he  multi-information  display
and buzzer. Always check the surrounding area when using this
system.
Front corner sensors
Rear corner sensors
Rear center sensors1
2
3 
     
        
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2714-5. Using the driving support systems
4
Driving
When the sensor detects an obstacle, the direction of and the approx-
imate distance to the o bstacle are displayed and the buzzer sou nds.
■Intuitive parking assist display
Front  corner  sensor  opera-
tion
Rear corner sensor operation
Rear center sensor operation
■Sensor operation and di stance to an obstacle
The system operates when the vehi cle approaches an obstacle, as
shown by the following table.
When 2 or more obstacles are detected simultaneously, the buzze r sys-
tem responds to the nearest zone.
Front corner sensors
Rear corner sensors
The distance display and buzzer
1
2
3
Approximate distance to obstacleDisplay and buzzer
2.0 ft. (60 cm) to 1.5 ft. (45 cm)Intermittent
1.5 ft. (45 cm) to 1.0 ft. (30 cm)Fast intermittent
Less than 1.0 ft. (30 cm)Continuously
Approximate distance to obstacleDisplay and buzzer
2.8 ft. (85 cm) to 2.0 ft. (60 cm)Intermittent
2.0 ft. (60 cm) to 1.3 ft. (40 cm)Fast intermittent
Less than 1.3 ft. (40 cm)Continuously 
     
        
        Page 273 of 672

2734-5. Using the driving support systems
4
Driving
■The intuitive parking assist can be operated when
●Front corner sensors:
• The engine switch is in the “ON” position.
• The shift lever is in R.
• The shift lever is not in P or R and vehicle speed is less than about 6 mph
(10 km/h).
● Rear corner and rear center sensors:
• The engine switch is in the “ON” position.
• The shift lever is in R.
■ If the display flashes and a message is displayed
P. 557, 558
■ Certification (Canada only)
This ISM device complies with Canadian ICES-001.
WARNING
■When using the intuitive parking assist
Observe the following precautions.
Failure  to  do  so  may  result  in  the  vehicle  being  unable  to  be  driven  safely
and possibly cause an accident.
● Do not use the sensor at speeds in excess of 6 mph (10 km/h).
● The sensors’ detection areas and reaction times are limited. When moving
forward  or  reversing,  check  the  areas  surrounding  the  vehicle  ( especially
the  sides  of  the  vehicle)  for  safety,  and  drive  slowly,  using  t he  brake  to
control the vehicle’s speed.
● Do not install accessories within the sensors’ detection areas. 
     
        
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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. 
     
        
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2954-5. Using the driving support systems
4
Driving
■Conditions  under  which  the  Rear  C ross  Traffic  Alert  function  will  not
detect a vehicle
The  Rear  Cross  Traffic Alert  function  is  not  designed  to  detect   the  following
types of vehicles and/or objects.
● Small motorcycles, bicycles, pedestrians, etc.
*
●Vehicles approaching from directly behind
● Guardrails, walls, signs, parked vehicles and similar stationar y objects
*
●Vehicles moving away from your vehicle
● Vehicles approaching from the parking spaces next to your vehic le
*
●Vehicles backing up in the parking space next to your vehicle*
*
: Depending on conditions, detection of a vehicle and/or object  may occur.
■ Conditions under which the Rear C ross  Traffic  Alert  function  may  not
function correctly
The Rear Cross Traffic Alert function may not detect vehicles c orrectly in the
following conditions.
● When ice or mud, etc., is attached to the rear bumper
● During bad weather such as heavy rain, fog, snow, etc.
● When multiple vehicles approach continuously
● Shallow angle parking
● When a vehicle is approaching at high speed
● When parking on a steep incline, such as hills, a dip in the ro ad, etc.
● Directly after the RCTA function is set to on
● Directly after the engine is started with the RCTA function is  on
● When towing a trailer
● Vehicles  that  the  sensors  cannot  detect
because of obstacles 
     
        
        Page 310 of 672
![TOYOTA TUNDRA 2018  Owners Manual (in English) 3104-5. Using the driving support systems
Using  the  GAIN  (+/-)  selection
buttons,  set  a  starting  gain  of
5.0.
While  driving  20  -  25  mph  [35  -  40  km/h],  fully  apply  the 
manual
TRA TOYOTA TUNDRA 2018  Owners Manual (in English) 3104-5. Using the driving support systems
Using  the  GAIN  (+/-)  selection
buttons,  set  a  starting  gain  of
5.0.
While  driving  20  -  25  mph  [35  -  40  km/h],  fully  apply  the 
manual
TRA](/manual-img/14/43029/w960_43029-309.png)
3104-5. Using the driving support systems
Using  the  GAIN  (+/-)  selection
buttons,  set  a  starting  gain  of
5.0.
While  driving  20  -  25  mph  [35  -  40  km/h],  fully  apply  the 
manual
TRAILER BRAKE OUTPUT
 slider.
Adjust  the  gain  setting,  using  t he  GAIN  (+/-)  selection  buttons ,  to
either  increase  or  decrease  to  j ust  below  the  point  of  trailer wheel
lock-up.
For confirmation, repeat steps   and   until desired gain setting
is reached (just below point of trailer wheel lock-up).
■ When using the trailer brake control system
Please  turn  off  the  intuitive  parking  assist  while  towing  a  tra iler.  If  left  on,
sonar sensors will detect the trailer being towed.
■ When setting the gain
Wheel  lock-up  occurs  when  the  trailer  wheel  squeals  or  tire  smo ke  occurs.
Trailer wheels may not lock-up while driving heavily loaded trailer. During this
case,  adjust  the  Trailer  gain  to  the  highest  allowable  setting  for  the  towing
condition.
■ When disconnecting and reco nnecting battery terminals
The gain setting data will be reset.
5
6
7
867 
     
        
        Page 551 of 672

5518-2. Steps to take in an emergency
8
When trouble arises
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passenger
that  his  or  her  seat  belt  is  not  fastened.  The  buzzer  sounds  on ce  if  the
vehicle reaches a speed of 12 mph  (20 km/h). If the seat belt is sill unfas-
tened after 30 seconds, the buzzer will sound intermittently fo r 10 seconds.
Then, if the seat belt is still unfastened, the buzzer will sou nd in a different
tone for 20 more seconds.
*2: Parking brake engaged warning buzzer:
A  buzzer  will  sound  if  the  vehicle  is  driven  at  a  speed  of  approximately
3 mph (5 km/h) or more.
■ SRS warning light
This  warning  light  system monitors  the  airbag  sensor  assembly,  front  impact
sensors, side impact sensors (front door), side impact sensors  (rear), driver’s
seat  position  sensor,  driver’s  seat  belt  buckle  switch,  front  passenger  occu-
pant classification system (ECU and sensors), “AIR BAG ON” indi cator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buck le switch, seat
belt  pretensioners  assemblies,  airbags,  interconnecting  wiring  and  power
sources. ( P. 40)
■ Front  passenger  detection  sensor,  seat  belt  reminder  and  warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause  the warning light to  flash and the warnin g  buzzer  to
sound even if a passenger is not sitting in the seat.
● If  a  cushion  is  placed  on  the  seat,  the  sensor  may  not  detect  a  passenger,
and the warning light may not operate properly.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact  your Toyota dealer
as soon as possible. 
     
        
        Page 558 of 672

5588-2. Steps to take in an emergency
Indicates that the washer fluid level is low
Add washer fluid.
(If equipped)
Indicates  that  intuitive  parking  assist  is  dirty  or
covered with ice
Clean the sensor.
(If equipped)
Indicates  that  the  Blind  Spot  Monitor  sensors  or
the  surrounding  area  on  the  bumper  is  dirty  or
covered with ice
A buzzer also sounds.
 Clean  the  sensor  and  its  surrounding  area
on the bumper.
Standard fuel tank
Indicates remaining fuel is approximately 4.0 gal.
(15.0 L, 3.3 Imp.gal.) or less
Large fuel tank
Indicates remaining fuel is approximately 3.8 gal.
(14.4 L, 3.2 lmp.gal.) or less
A buzzer also sounds. 
 Refuel the vehicle.
(U.S.A.)
Indicates  that  all  maintenance  according  to  the
driven  distance  on  the  maintenance  schedule
*
should be performed soon.
Comes  on  approximately  4500  miles  (7200 km)
after the message has been reset.
If necessary, perfo rm maintenance.
Warning messageDetails/Actions
Windshield 
Washer Fluid  Low
Clean Parking Assist  Sensor
Blind Spot 
Monitor 
Unavailable
Fuel Low
Maintenance 
Required Soon