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5
When trouble arises
597
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A11U_(U)
Emergency start function
When  the  hybrid  system  does  not  start,  the  following  steps  can  be
used  as  an  interim  measure  to  start  the  hybrid  system  if  the
“POWER” switch is functioning normally:
Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press  and  hold  the  “POWER”  switch  for  about  15  seconds
while depressing the brake pedal firmly.
Even  if  the  hybrid  system  can  be  started  using  the  above  steps,  the
system  may  be  malfunctioning.  Have the vehicle inspected by your
To y o t a   d e a l e r .
■The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One  or  both  of  the  12-volt  battery  terminals  may  be  discon-
nected.
●The 12-volt battery may be discharged. ( oP.   6 0 1 )
Contact  your  Toyota  dealer  if  the  problem  cannot  be  repaired,  or  if
repair procedures are unknown.
STEP 1 
STEP 2 
STEP 3  
         
        
        
     
        
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604
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A11U_(U)
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To   p r e v e n t   1 2 - v o l t   b a t t e r y   d i s c h a r g e
●Turn  off  the  headlights  and  the  audio  system  while  the  hybrid  system  is
off.
●Turn  off  any  unnecessary  electrical  components  when  the  vehicle  is  run-
ning at a low speed for an extended period, such as in heavy traffic.
■When the 12-volt battery is removed or discharged
●The hybrid system may not start. ( oP.   4 7 8 )
●If  the  12-volt  battery  is  depleted  with  the  shift  position  in  P,  it  will  not  be
possible  to  shift  the  shift  position  other  than  P.  In  this  case,  the  vehicle
cannot  be  towed  without  lifting  both  front  wheels  because  the  front
wheels are locked by the parking lock. ( oP.   5 2 9 )
●When the 12-volt battery is reconnected, start the hybrid system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
■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  draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery charges automatically while the hybrid system is operat-
ing.) 
         
        
        
     
        
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626
6-1. Specifications
PRIUS PHV_OM_OM47A11U_(U)
Electrical system
*1: Voltage  is  checked  30  seconds  after  the  hybrid  system  and  all  lights  are
turned off.
Tr a n s m i s s i o n
*2:The fluid capacity is the quantity of reference.
If replacement is necessary, contact your Toyota dealer.
12-volt battery
Open voltage*1 at 
68 qF (20 qC):
Fully charged12.5 V or over
Half charged 11.0   12.5 V
Discharged Under 11.0 V
Charging rates 5 A max.
Fluid capacity*23.6 qt. (3.4 L, 3.0 Imp.qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Tr a n s m i s s io n   fl u i d   ty p e
Using  transmission  fluid  other  than  “Toyota  Genuine  ATF  WS”  may  cause
deterioration in shift quality, locking up of your transmission accompanied by
vibration, and ultimately damage the transmission of your vehicle. 
         
        
        
     
        
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628
6-1. Specifications
PRIUS PHV_OM_OM47A11U_(U)
Light bulbs
A: H11 halogen bulbs 
B: HB3 halogen bulbs 
C: H16 halogen bulbs
D: Wedge base bulbs (amber) 
E: Wedge base bulbs (clear) 
F: Double end bulbs 
*:  If equipped
Light BulbsBulb No.WType
Exterior
Halogen headlights
Low beam
High beam
LED headlights
High beam
H11
9005
9005
55
60
60
A
B
B
Fog lights*H16 19 C
Front turn signal lights WY21W 21 D
Front side marker lights W5W 5 E
Parking lights 
(halogen headlights)W5W 5 E
Rear turn signal lights WY21W 21 D
Back-up lights W21W 21 E
License plate lights W5W 5 E
Interior
Front interior/personal lights 5E
Rear interior light 8F
Va n i t y   l i g h t s 8E
Door courtesy lights 5E
Luggage compartment light 5F 
         
        
        
     
        
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