
2764-5. Using the driving support systems
NOTICE
■When using intuitive parking assist-sensor
In  the  following  situations,  the  system  may  not  function  correctly  due  to  a
sensor malfunction, etc. Have the vehicle checked by your Toyot a dealer.
● A beep does not sound when you turn the main switch on.
● The  intuitive  parking  assist  operation  display  flashes,  and  a  beep  sounds
when no obstacles are detected.
● If  the  area  around  a  sensor  collides  with  something,  or  is  subjected  to
strong impact.
● If the bumper collides with something.
● If the display shows continuously without a beep.
● If a display error occurs, first check the sensor.
If the error occurs even if there is no ice, snow or mud on the  sensor, it is
likely that the sensor is malfunctioning.
■ Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor a rea. 
Doing so may result in the sensor malfunctioning. 

2844-5. Using the driving support systems
WARNING
■When using the rear view monitor system 
The  rear  view  monitor  system  is  a  supplemental  device  intended  to  assist
the driver when backing up. When backing up, be sure to visually check all
around the vehicle both directly and using the mirrors before proceeding.
Observe  the  following  precautions  to  avoid  an  accident  that  cou ld  result  in
death or serious injuries.
● Never depend on the rear view monitor system entirely when back ing up.
The image and the position of the guide lines displayed on the  screen may
differ from the actual state.
Use caution, just as you would when backing up any vehicle.
● Be  sure  to  back  up  slowly,  depressing  the  brake  pedal  to  contro l  vehicle
speed.
● The instructions given are only guide lines.
When and how much to turn the steering wheel will vary according to traf-
fic  conditions,  road  surface  conditions,  vehicle  condition,  etc .  when  park-
ing.  It  is  necessary  to  be  fully  aware  of  this  before  using  the   rear  view
monitor system. 
● When parking, be sure to check that the parking space will acco mmodate
your vehicle before maneuvering into it.
● Do not use the rear view monitor system in the following cases:
• On icy or slick road surfaces, or in snow
• When using tire chains or emergency tires
• When the tailgate is not closed completely
• On roads that are not flat or straight, such as curves or slop es.
● In  low  temperatures,  the  screen  may  darken  or  the  image  may  bec ome
faint.  The  image  could  distort  when  the  vehicle  is  moving,  or  y ou  may
become unable to see the image on the screen. Be sure to visual ly check
all  around  the  vehicle  both  directly  and  using  the  mirrors  befo re  proceed-
ing.
● If the tire sizes are changed, the position of the fixed guide  lines displayed
on the screen may change.
● The  camera  uses  a  special  lens.  The  distances  between  objects  a nd
pedestrians  that  appear  in  the  image  displayed  on  the  screen  will  differ
from the actual distances. ( P. 280) 

3044-5. Using the driving support systems
■Turning off TRAC, VSC and Trailer Sway Control systems
2WD models and 2WD mode on 4WD models
To turn the TRAC, VSC and Trailer Sway Control systems off, sto p the vehi-
cle  completely,  and  then  press  and  hold 
 for  more  than  3  seconds
while the AUTO LSD system is activated. ( P. 299)
4H mode on 4WD models
To  turn  the  TRAC,  VSC  and  Trailer  Sway  Control  systems  off,  press  and
hold 
 for more than 3 seconds while the vehicle is stopped.
The VSC off and “TRAC OFF” indicator light will come on.
Press 
 again to turn the system back on.
■ When  the  VSC  or  TRAC  system  is  turned  off  by  pressing  the  VSC  o ff
switch
On vehicles with pre-collision system, pre-collision brake assi st and pre-colli-
sion  braking  will  also  be  disabled.  The  PCS  warning  light  will  come  on  and
the message will be shown on the multi-information display. ( P. 563)
■ When  the  “TRAC  OFF”  indicator  light  comes  on  even  if  VSC  off  sw itch
has not been pressed.
TRAC cannot be operated. Contact your Toyota dealer.
■ Operating conditions of  hill-start assist control
When  the  following  four  conditions  are  met,  the  hill-start  assi st  control  will
operate:
● The  shift  lever  is  in  a  position  other  than  P  or  N  (when  starting  off  forward/
backward on an upward incline)
● The vehicle is stopped
● The accelerator pedal is not depressed
● The parking brake is not engaged
■ Automatic system cancelation  of hill-start assist control
The hill-start assist control will turn off in any of the follo wing situations:
The shift lever is shifted to P or N
● The accelerator pedal is depressed
● The parking brake is engaged
● 2 seconds at maximum elapsed after the brake pedal is released 

3064-5. Using the driving support systems
WARNING
■The ABS does not operate effectively when
● The  limits  of  tire  gripping  performance  have  been  exceeded  (suc h  as
excessively worn tires on a snow covered road).
● The vehicle hydroplanes while driving at high speed on wet or s lick roads.
■ Stopping  distance when  the ABS   is  operating  may  exceed  that  of  nor-
mal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always
maintain  a  safe  distance  from  the  vehicle  in  front  of  you,  espe cially  in  the
following situations:
● When driving on dirt, gravel or snow-covered roads
● When driving with tire chains
● When driving over bumps in the road
● When driving over roads with potholes or uneven surfaces
■ TRAC/VSC may not operate effectively when
Directional  control  and  power  may  not  be  achievable  while  driving  on  slip-
pery road surfaces, even if the TRAC/VSC system is operating. 
Drive  the  vehicle  carefully  in  conditions  where  stability  and  p ower  may  be
lost.
■ Hill-start assist control does not operate effectively when
● Do  not  overly  rely  on  hill-start  assist  control.  Hill-start  ass ist  control  may
not operate effectively on steep inclines and roads covered wit h ice.
● Unlike the parking brake, hill-st art assist control is not intended to hold the
vehicle  stationary  for  an  extended  period  of  time.  Do  not  attempt  to  use
hill-start  assist  control  to  hold  the  vehicle  on  an  incline,  as   doing  so  may
lead to an accident. 
![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 

5488-2. Steps to take in an emergency
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have  the  vehicle  inspected  by  your  Toyota  dealer
immediately.
Low fuel level warning light
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
 Refuel the vehicle.
Seat belt reminder light (warning buzzer)*1
Warns  the  driver  and/or  front  passenger  to  fasten  their
seat belts
 Fasten the seat belt.
If  the  front  passenger’s  seat  is  occupied,  the  front
passenger’s  seat  belt  also  needs  to  be  fastened  to
make the warning light (warning buzzer) turn off.
Master warning light
A  buzzer  sounds  and  the  warning  light  comes  on  and
flashes  to  indicate  that  the  master  warning  system  has
detected a malfunction.
 P. 555
(U.S.A.)
(Canada)Parking brake warning light (warning buzzer)*2
Indicates that the parking brake is engaged.
 Release the parking brake.
Warning lightWarning light/Details/Actions 

5578-2. Steps to take in an emergency
8
When trouble arises
(If equipped)
Indicates  a  malfunction  in  the  intuitive  parking
assistThe malfunctioning assist-sensor is flashing.
 Have  the  vehicle  inspected  by  your  Toyota
dealer immediately.
(If equipped)
Indicates a malfunction in the Blind Spot Monitor
A buzzer also sounds.
 Have  the  vehicle  inspected  by  your  Toyota
dealer immediately.
Indicates  that  one  or  more  of  the  doors  or  the
hood is not fully closed
The  system  also  indicates  which  doors  are  not
fully closed.
If  the  vehicle  reaches  a  speed  of  3  mph
(5 km/h),    flashes  and  a  buzzer
sounds  to  indicate  that  the  door(s)  are  not
yet fully closed.
 Make  sure  that  all  the  doors  and  the  hood
are closed.
Indicates  that  the  automatic  transmission  fluid
temperature is to high
A buzzer also sounds.
 Immediately  stop  the  vehicle  in  a  safe
place, shift the shift lever to P and wait until
the light goes off. 
If the light goes off, you may start the vehi-
cle  again.  If  the  light  does  not  go  off,  con-
tact your Toyota dealer.
Indicates that the parking brake is still engaged
If  the  vehicle  reaches  a  speed  of  3  mph
(5 km/h),    flashes  and  a  buzzer
sounds  to  indicate  that  the  parking  brake  is
still engaged.
 Release the parking brake.
Warning messageDetails/Actions
Parking Assist 
Malfunction
Blind Spot Monitor  Malfunction 
Visit Your Dealer
High Transmission  Fluid Temp 
See Owner’s Manual
Release 
Parking Brake
(U.S.A) (Canada) 

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