Page 84 of 592

841-4. Hybrid system
There  is  an  air  intake  vent  under
the  right  side  of  the  rear  seat  for
the  purpose  of  cooling  the  hybrid
battery  (traction  battery).  If  the
vent  becomes  blocked,  the  hybrid
battery  (traction  battery)  may
overheat, leading to a reduction in
the  hybrid  battery  (traction  bat-
tery) output.
When  a  certain  level  of  impact is  detected  by  the  impact  sensor ,  the
emergency shut off system blocks  the high voltage current and stops
the fuel pump to minimize the ri sk of electrocution and fuel leakage. If
the emergency shut off system activates, your vehicle will not  restart.
To restart the hybrid system , contact your Toyota dealer.
A  message  is  automatically  displ ayed  when  a  malfunction  occurs  in
the hybrid system  or an improper operation is attempted.
If a warning message is shown on
the  multi-information  display,  read
the  message  and  follow  the
instructions. ( P. 485)
Hybrid battery (traction battery) air intake vent
Emergency shut off system 
Hybrid warning message 
     
        
        Page 243 of 592

243
4
Driving
4-4. Refueling
●Close all the doors and windows,  and turn the power switch off.
● Confirm the type of fuel.
■Fuel types
P. 531
■ Fuel tank opening for unleaded gasoline
To  help  prevent  incorrect  fueling,  your  vehicle  has  a  fuel  tank   opening  that
only accommodates the special nozzle on unleaded fuel pumps.
Opening the fuel tank cap
The  fuel  tank  of  your  vehicle  h as  a  special  structure,  which
requires a reduction in fuel tank  pressure before refueling. After
the opener switch has been pressed, it will take several second s
until the vehicle is r eady for refueling.
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do
so may result in death or serious injury.
● After  exiting  the  vehicle  and  before  opening  the  fuel  door,  tou ch  an
unpainted metal surface to discharge any static electricity. It  is important to
discharge  static  electricity  before  refueling  because  sparks  re sulting  from
static electricity can cause fuel vapors to ignite while refuel ing.
● Always hold the grips on the fuel tank cap and turn it slowly to remove it. 
A  whooshing  sound  may  be  heard  when  the  fuel  tank  cap  is  loosen ed.
Wait until the sound cannot be heard before fully removing the cap. In hot
weather, pressurized fuel may spray out the filler neck and cause injury.
● Do  not  allow  anyone  that  has  not  discharged  static  electricity  from  their
body to come close to an open fuel tank.
● Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
● Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
● Do not return to the vehicle or touch any person or object that  is statically
charged.
This may cause static electricity to build up, resulting in a p ossible ignition
hazard. 
     
        
        Page 532 of 592

5328-1. Specifications
■Non-recommendation of the use of blended gasoline
●If  you  use  gasohol  in  your  vehicle,  be  sure  that  it  has  an  octa ne  rating  no
lower than 87.
● Toyota does not recommend the use of gasoline containing methan ol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT  (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota  does  not  recommend  the  use  of  gasoline  that  contains  MMT.  If  fuel
containing  MMT  is  used,  your  emission  control  system  may  be  adv ersely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time whi le accelerat-
ing or driving uphill. This is normal and there is no need for  concern.
●
Use  only  gasoline  containing  up  to  15%
ethanol.
DO  NOT  use  any  flex-fuel  or  gasoline
that  could  contain  more  than  15%  etha-
nol,  including  from  any  pump  labeled
E30,  E50,  E85  (which  are  only  some
examples  of  fuel  containing  more  than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)