2001 TOYOTA PRIUS key battery

Perform any of the following
and the system will return to
Armed state:

The alarm sounding
period passes.
Alarm sounding
Perform any of the following
and the system will return to
Disarmed state (A):

Push the unlock switch on
the wireless remote.

Put the key in the lock on
the driver's or the passenger
door and turn it towards
unlock.

Put the key in the ignition
and turn it ON.Perform any of the following
and the system will return to
Disarmed state (B):

Open the luggage
compartment door with the
wireless remote.

Open the luggage
compartment door with the
Key.
Perform any of the following
and the system will return to
Disarmed state (A):

Push the unlock switch on
the wireless remote.

Put the key in the lock on
the driver's or the
passenger door and turn
it towards unlock.

Put the key in the
ignition and turn it ON.
Armed state
Perform any of the following
and the system will go on to
Alarm sounding:

Open any of the doors and
allow the entry delay time
to pass.

Open the hood.

Open the luggage
compartment door with
something other than the
key or wireless remote.

Reconnect the battery.

Ignition switch is connected
directly.Perform any of the following
and the system will return to
Disarmed state (B):

Open the luggage
compartment door with the
wireless remote.

Open the luggage
compartment door with the
Key.
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±71
2001 PRIUS (RM778U)

Replace the transmitter battery with a new or normal
one and check UNLOCK±LOCK function works under
the standard operation.


The battery should be replaced by only the shops with
sufficient skill as new normal battery is necessary.

Battery quality can be judged by checking the rem-
nant volume of the battery.
Ye s
Battery faulty.
No
Make the vehicle be in the initialized condition.
Enter into the self diagnostic mode.
If operating door control receiver in the order of 1 through 2, the mode turns to diagnostic mode.
(1) Insert the key plate in the ignition key cylinder and pull out, then insert it again and turn ignition switch
OFF " ON " OFF once within 5 seconds after pulling out.
(2) After completing the procedure within 30 seconds, turn the ignition switch OFF " ON " OFF 9 times.
HINT:
In the case that either of (1) and (2) conditions is not satisfied, transfer to normal mode.

When completing self diagnostic mode, turn the ignition switch ON.
LOCK and UNLOCK operation is not performed under the self diagnostic mode.
1st time9th times ON
OFF
Transmitter battery check:
Inspection start by using self diagnostic mode:
within.
30 secs.within.
5 secs.
12 910
Key plate
not inserted Key plate
inserted
Ignition
switch
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±79
2001 PRIUS (RM778U)

Start
Security indicator is flashing
Insert a master key (black) into the key cylinder.
Security indicator goes off for 1 sec. and then lights up.
Remove the master key.
Insert the other master key (black) into the key cylinder.
Insert the sub key (gray) into the key cylinder.
Security indicator goes off for 1 sec. and then lights up again.
Remove the sub key
Security indicator is flashing.
End Remove the master key.
Security indicator goes off for 1 sec. and then lights up.
Master key 1
Master key 2
Sub key
± BODY ELECTRICALHYBRID VEHICLE IMMOBILISER SYSTEM
BE±105
1772 Author: Date:
2001 PRIUS (RM778U)
6. KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE
(a) Registration of a new transponder key.
HINT:

This must be done when you install a new transponder key ECU.

It is possible to register up to 2 master key codes and a sub key code.

In the automatic registration mode, the last key registered becomes sub±key.
(b) Initial condition: Battery connected, no key in key cylinder.