Immobilizer System Component Replacement/Key Addition And Clearing [With Advanced Keyless System]: Foreword

When performing the following procedures, the immobilizer resetting procedure using the M-MDS must also always be performed: "Keyless control module replacement", "PCM replacement", "Steering lock unit replacement", "Keyless control module and PCM joint replacement", "Keyless control module, PCM, and steering lock unit joint replacement", and "Key ID number clearing". The engine will not start unless all work is performed using the M-MDS.
A card key that can start the engine is necessary for the key programming. If there is no card key that can start the engine, perform the key programming after the card key programming.
(See CARD KEY ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM] ).
There are two ways to add supplemental key: Using the M-MDS or using two keys that can start the engine to program.
When replacing any of the immobilizer system component parts, adding/clearing keys, or performing other functions, refer to DIAGNOSTIC PROCEDURE .
Verify that the room fuse is equipped.

DIAGNOSTIC PROCEDURE

Ref. No.	Condition	Items necessary for procedure (prepare before starting procedure)	Cautionary notes
1	Since two or more keys that can start the engine are necessary, make a spare key. Or program an additional key.	Programming key	The M-MDS is necessary for the additional key programming if "Customer spare key programming disable" is performed before the procedure using the M-MDS. In this case, perform No. 2.
2	If there is only one key that can start the engine, make a spare key. If there is no key, program an additional key.	Programmed card key Programming key M-MDS	-
3	Clearing the programmed key ID number.	Programming keys (two or more) M-MDS	The key ID number programmed to the vehicle will be completely cleared. The engine cannot be started unless the key is reprogrammed after the procedure. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle. The engine cannot be started unless two or more keys are reprogrammed after the procedure. The two or more keys prepared before the procedure do not have to be new ones and there is no problem with using the key that was used to start the engine before the procedure.
3	Replacing all the keys. (Steering lock unit is not replaced)	Programmed card key Programming keys (two or more) M-MDS	The keys (two or more) prepared before the procedure do not have to be new ones, and there is no problem with using the key that was used to start the engine before the procedure. The engine cannot be started unless the key is reprogrammed after the procedure.
3	Replacing the PCM only.	New PCM Programmed card key Programming keys (two or more) M-MDS	-
4	Changing the additional key programming procedure. (Method for programming other keys using two keys that can start the engine is disabled.)	M-MDS	The additional key programming using No. 1 cannot be performed after the procedure. It is possible to restore the setting. For restoring the setting, the M-MDS is necessary.
4	Changing the additional key programming procedure. Allows programming using two keys that can start the engine.	M-MDS	New vehicles have this setting.
5	Replacing the steering lock unit only.	New steering lock unit Programmed card key New keys (two or more) M-MDS	Have two or more keys ready for programming before beginning the procedure, since the previous keys will be invalid. The steering lock unit programming is necessary for the keyless control module before the key programming. Two or more keys need to be programmed after the procedure to start the engine.
5	Replacing the PCM and steering lock unit at the same time.	New PCM New steering lock unit Programmed card key New keys (two or more) M-MDS	Have two or more keys ready for programming before beginning the procedure, since the previous keys will be invalid. Perform the steering lock unit programming. Two or more keys need to be programmed after the procedure to start the engine.
5	Replacing the keyless control module only.	New keyless control module Programming card key Programming keys (two or more) M-MDS	Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the card keys and keys for the vehicle. Perform the card key programming. Perform the steering lock unit programming. Unless card keys and keys (two or more) are programmed after the procedure, the engine cannot be started. The card key and keys (two or more) prepared before the procedure do not have to be new ones and there is no problem with using the keys that were used to start the engine before the procedure.
5	Replacing the keyless control module and steering lock unit at the same time.	New keyless control module New steering lock unit Programming card key New keys (two or more) M-MDS	Unless keys are re-programmed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the card keys and keys for the vehicle. Perform the card key programming. Perform the steering lock unit programming. The engine cannot be started unless a card key and keys (two or more) are programmed. The card key and keys (two or more) prepared before the procedure do not have to be new ones and there is no problem with using the keys that were used to start the engine before the procedure.
5	Replacing the PCM and keyless control module at the same time.	New PCM New keyless control module Programming card key Programming keys (two or more) M-MDS	Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the card keys and keys for the vehicle. Perform the card key programming. Perform the steering lock unit programming. The engine cannot be started unless a card key and two or more keys are programmed after the procedure. The card key and keys (two or more) prepared before the procedure do not have to be new ones and there is no problem with using the keys that were used to start the engine before the procedure.
5	Replacing the PCM, keyless control module, and steering lock unit at the same time.	New PCM New keyless control module New steering lock unit Programming card key Programming keys (two or more) M-MDS	Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the card keys and keys for the vehicle. Perform the card key programming. Perform the steering lock unit programming. The engine cannot be started unless a card key and two or more keys are programmed after the procedure. The card key and keys (two or more) prepared before the procedure do not have to be new ones and there is no problem with using the keys that were used to start the engine before the procedure.
-	Replacing the coil antenna.	New coil antenna	Immobilizer system resetting is not necessary.

CAUTION:

The following conditions may cause poor signal communication between the key and vehicle, resulting in the engine not starting or a key registration error. Do not perform any work under the following conditions:
- Placing the following items close to the key grip or contacting it.
  - Spare keys
  - Keys for other vehicles equipped with an immobilizer system
  - Any metallic object
  - Any electronic device, or any credit or other card with magnetic strips
Do not place the following devices in the vehicle while programming, otherwise programming cannot be performed:
- M-MDS
- Personal computer
- Devices that can send/receive the radio waves

NOTE:

The "valid key" used in this manual indicates the key that can start the engine.
If the key adding, programming, clearing, and immobilizer system construction parts replacement are performed, verify that the all keys can start the engine within 5 s after the procedure.
When verifying that the engine starts, wait at least 5 s or more before starting the engine using the next key.
If the engine cannot be started using a programmed key, repeat the procedure from the beginning.
Do not start the engine unless indicated in the procedure. If the engine is started during the programming procedure, programming is stopped at that point. Repeat the procedure starting from the beginning if the engine is started before completion.
Do not place the card key in the vehicle or bring it within approx. 1 m of the vehicle unless indicated in the procedure.
Two or more key ID numbers must be programmed for the engine to start.
A maximum of eight key ID numbers can be programmed for one vehicle. The M-MDS can be used to verify the number of key ID numbers programmed to a single vehicle.
Do not select a M-MDS screen menu other than one indicated in the procedure.