jump start TOYOTA 4RUNNER 2021 Owners Manual (in English)
Page 334 of 592
3344-6. Driving tips
4RUNNER (U)
WARNING
■Off-road vehicle precautions
Always observe the following precautions to minimize the risk o f death, seri-
ous injury or damage to your vehicle:
● In  a  rollover  crash,  an  unbelted  person  is  significantly  more  l ikely  to  die
than a person wearing a seat belt. Therefore, the driver and al l passengers
should always fasten their seat belts.
● Avoid sharp turns or abrupt maneuvers, if at all possible. 
Failure  to  operate  this  vehicle  correctly  may  result  in  loss  of   control  or
vehicle rollover causing death or serious injury.
● Loading cargo on the roof luggage carrier will make the center  of the vehi-
cle  gravity  higher. Avoid  high  speeds,  sudden  starts,  sharp  tur ns,  sudden
braking  or  abrupt  maneuvers,  otherwise  it  may  result  in  loss  of  control  or
vehicle rollover due to failure to operate this vehicle correct ly.
● Always  slow  down  in  gusty  crosswinds.  Because  of  its  profile  and  higher
center of gravity, your vehicle is more sensitive to side winds  than an ordi-
nary passenger car. Slowing down will allow you to have better  control.
● When  driving  off-road  or  in  rugged  terrain,  do  not  drive  at  excessive
speeds,  jump,  make  sharp  turns,  strike  objects,  etc. This  may  c ause  loss
of  control  or  vehicle  rollover  causing  death  or  serious  injury.  You  are  also
risking expensive damage to your vehicle’s suspension and chass is.
● Do  not  drive  horizontally  across  steep  slopes.  Driving  straight   up  or
straight  down  is  preferred.  Your  vehicle  (or  any  similar  off-ro ad  vehicle)
can tip over sideways much more easily than forward or backward . 
Page 510 of 592
5107-2. Steps to take in an emergency
4RUNNER (U)
If  you  have  a  set  of  jumper  (or  booster)  cables  and  a  second  vehicle
with a 12-volt battery, you can jump start your vehicle by foll owing the
steps below.
Confirm  that  the  electronic  key
is being carried.
When  connecting  the  jumper  (or
booster)  cables,  depending  on  the
situation,  the  alarm  may  activate
and doors locked. ( P. 80)
Open the hood ( P. 407)
If  the vehicle batt er y is discharged
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
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Page 511 of 592
5117-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
Connect the jumper cables according to the following procedure:Connect a positive jumper cable clamp to the positive (+) batte ry
terminal on your vehicle.
Connect  the  clamp  on  the  other  end  of  the  positive  cable  to  the
positive (+) battery termi nal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery term i-
nal on the s econd vehicle.
Connect  the  clamp  at  the  other  e nd  of  the  negative  cable  to  a
solid,  stationary,  unpainted  meta llic  point  away  from  the  battery
and any moving parts, as  shown in the illustration.
Start  the  engine  of  the  second  v ehicle.  Increase  the  engine  speed
slightly  and  maintain  at  that  lev el  for  approximately  5  minutes to
recharge the batter y of your vehicle.
Vehicles  with  a  smart  key  system  only:  Open  and  close  any  of  th e
doors of your vehicle wi th the engine switch off.
Maintain  the  engine  speed  of  the  second  vehicle  and  start  the
engine  of  your  vehicle  by  turning  the  engine  switch  to  the  “ON”
position (vehicles without a smart key system) or turning the e ngine
switch to IGNITION ON mode (vehi cles with a smart key system).
Once the vehicle’s engine has st arted, remove the jumper cables in
the exact reverse order from  which they were connected.
Once  the  engine  starts,  have  the  vehicle  inspected  at  your  Toyota
dealer as soon as possible.3
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