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7497-2. Steps to take in an emergency
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7
When trouble arises
If  the 12-volt batter y is discharged
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. 
Vehicles with an alarm  
( P. 147):  
Confirm  that  the  electronic  key 
is being carried.
When  connecting  the  jumper  (or 
booster)  cables,  depending  on  the
situation,  the  alarm  may  activate 
and the doors may lock. ( P. 150)
2ZR-FXE engine: Open the hood. (P. 596) 
M20A-FXS  engine:  Open  the 
hood.  ( P.  596)  and  fuse  box 
cover. 
M20A-FXS  engine:  Open  the 
exclusive  jump  starting  termi- 
nal cover.
The  following  procedures  may  be  used  to  start  the  hybrid  sys- 
tem if the vehicle’s 12-volt battery is discharged. 
You can also call any authorized Toyota retailer or Toyota auth o- 
rized repairer, or any reliable repairer or a qualified repair  shop.
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7517-2. Steps to take in an emergency
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7
When trouble arises
M20A-FXS engine 
Connect the positive jumper cable clamp to exclusive jump start - 
ing terminal on your vehicle. 
Connect the clamp on the other end of the positive cable to pos i- 
tive (+) battery terminal on the second vehicle.  
Connect the negative cable clamp to negative (-) battery termin al 
on the second vehicle. 
Connect the clamp at the other end of the negative cable to sol id, 
stationary, unpainted metallic point away from the exclusive ju mp 
starting  terminal  and  any  moving  parts  as  shown  in  the  illustra - 
tion. 
Start  the engine  of  the  second  vehicle. Increase  the  engine  spe ed 
slightly  and  maintain  at  that  level  for  approximately  5  minutes  to 
recharge the 12-volt battery of your vehicle. 
Open  and  close  any  of  the  doors  of  your  vehicle  with  the  engine 
switch off. 
Maintain  the  engine  speed  of  the  second  vehicle  and  start  the 
hybrid  system  of  your  vehicle  by  turning  the  power  switch  to  ON 
mode. 
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7527-2. Steps to take in an emergency
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Make  sure  the  “READY”  indicator  comes  on.  If  the  indicator  light 
does not come on, contact any authorized Toyota retailer or Toy ota 
authorized repairer, or any reliable repairer. 
Once  the  hybrid  system  has  started,  remove  the  jumper  cables  in 
the exact reverse order from which they were connected. 
For  M20A-FXS  engine:  Close  the  exclusive  jump  starting  terminal 
cover, and reinstall the fuse box cover to its original positio n. 
Once  the  hybrid  system  starts,  have  the  vehicle  inspected  at  an y 
authorized Toyota retailer or Toyota authorized repairer, or an y reliable 
repairer as soon as possible.
■ Starting the hybrid system when the 12-volt battery is discharged 
The hybrid system cannot be started by push-starting. 
■ To prevent 12-volt battery discharge 
● Turn off the headlights and the audio system while the hybrid system is off. 
● Turn off any unnecessary electrical components when the vehicle is running 
at a low speed for an extended period, such as in heavy traffic . 
■ When the 12-volt battery is removed or discharged 
● Information  stored  in  the  ECU  is  cleared.  When  the  12-volt  battery  is 
depleted,  have  the  vehicle  inspected  at  any  authorized  Toyota  r etailer  or 
Toyota authorized repairer, or any reliable repairer. 
● Some systems may require initialization. (P. 793) 
■ When removing the 12-volt battery terminals 
When the 12-volt battery terminals are removed, the information  stored in the 
ECU  is  cleared.  Before  removing  the  12-volt  battery  terminals,  contact  any 
authorized  Toyota  retailer  or  Toyota  authorized  repairer,  or  an y  reliable 
repairer. 
■ Charging the 12-volt battery 
The electricity stored in the 12- volt battery will discharge gradually even when 
the vehicle  is not  in  use, due  to natural discharge  and the dra ining effects of 
certain  electrical  appliances.  If  the  vehicle  is  left  for  a  lon g  time,  the  12-volt 
battery  may  discharge,  and  the  hybrid  system  may  be  unable  to  s tart.  (The 
12-volt battery recharges automat ically while the hybrid system is operating.)
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7567-2. Steps to take in an emergency
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WARNING
■After recharging the 12-volt battery (M20A-FXS engine) 
Have  the  12-volt  battery  inspected  at  any  authorized  Toyota  ret ailer  or 
Toyota  authorized  repairer,  or  any  reliable  repairer  as  soon  as   possible.  If 
the  12-volt  battery  is  deteriorating,  continued  use  may  cause  t he  12-volt 
battery to emit a malodorous gas, which may be detrimental to t he health of 
passengers. 
■ When replacing the 12-volt battery 
● When  the  vent  plug  and  indicator  are  close  to  the  hold  down  clamp,  the 
battery fluid (sulfuric acid) may leak. 
● For information regarding 12-volt  battery  replacement, contact any autho- 
rized Toyota retailer or Toyota authorized repairer, or any rel iable repairer. 
● M20A-FXS  engine:  After  exchanging,  securely  attach  the  exhaust hose 
and  exhaust  hole  plug  to  the  exhaust  hole  of  the  exchanged  12-v olt  bat- 
tery.  If  not  properly  installed,  gases  (hydrogen)  may  leak  into   the  vehicle 
interior, and there is the possible danger of the gas igniting  and exploding.
NOTICE
■When handling jumper cables 
When connecting the jumper cables, ensure that they do not beco me entan- 
gled in the cooling fans, etc. 
■ To prevent damaging the vehicle (M20A-FXS engine) 
The exclusive jump starting terminal is to be used when chargin g the 12-volt 
battery  from  another  vehicle  in  an  emergency.  It  cannot  be  used  to jump 
start another vehicle.