When trouble arises -> If the electronic key does not operate properly for Your Toyota Prius 4 Door Third Generation (2010-2015)

5-2. St eps t o t ak e in an em ergenc y  
If the electronic key does not operate properly  
If communication between the electronic key and vehicle is inter-  
rupted (P. 72) or the electronic key cannot be used because the  
battery is depleted, the smart key system and wireless remote con-  
trol cannot be used. In such cases, the doors can be opened and the  
hybrid system can be started by following the procedure below.  
Locking and unlocking the doors  
Use the mechanical key (P. 58)  
in order to perform the following  
operations:  
Locks all the doors  
Unlocks the door  
Turning the key rearward unlocks  
the driver’s door. Turning the key  
ITO52P121  
once again within 3 seconds  
unlocks the other doors.  
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5-2. Steps to take in an emergency  
Changing “POWER” switch modes and starting the hybrid  
system  
STEP  
STEP  
1
2
Depress the brake pedal.  
Touch the Toyota emblem side of  
the electronic key to the  
“POWER” switch.  
If any of the doors is opened or  
closed while the key is being  
touched to the switch, an alarm  
will sound to indicate that the start  
function cannot detect the elec-  
tronic key.  
STEP  
3
Perform the following operations.  
To change “POWER” switch modes: Within 10 seconds of the  
buzzer sounding, release the brake pedal and press the  
“POWER” switch. Modes can be changed each time the  
switch is pressed. (P. 194)  
To start the hybrid system: Press the “POWER” switch within  
10 seconds of the buzzer sounding, keeping the brake pedal  
depressed.  
In the event that the hybrid system still cannot be operated, contact  
your Toyota dealer.  
Stopping the hybrid system  
Set the parking brake, shift the shift position to P and press the “POWER”  
switch as you normally do when stopping the hybrid system.  
Replacing the key battery  
As the above procedure is a temporary measure, it is recommended that the  
electronic key battery be replaced immediately when the battery is depleted.  
(P. 454)  
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