Before Service Preparation And Precautions

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", 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 [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 the following table and perform the applicable procedure (No.1 to 8).
Verify that the room fuse is equipped.

CONDITION CAUTIONARY NOTES REFERENCE

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. (See NO.1 ADDITIONAL KEY PROGRAMMING PROCEDURE (USING TWO VALID KEYS) .)	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	Make a spare key when the customer has one key or card key that can start the engine. If there is no key, program an additional key. (See NO. 2 KEY ADDITIONAL PROGRAMMING PROCEDURE (USING THE M-MDS) .)	Programmed card key or programmed key Programming key or programmed card key M-MDS	-
3	Make a spare key when the customer has no key or card key that can start the engine. Or program an additional key. (See NO.3 KEY REPLACEMENT PROCEDURE (CLEARING PREVIOUSLY PROGRAMMED KEY ID NUMBERS, KEY RE-PROGRAM) .)	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. 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.
3	Clearing the programmed key ID number. (See NO.3 KEY REPLACEMENT PROCEDURE (CLEARING PREVIOUSLY PROGRAMMED KEY ID NUMBERS, KEY RE-PROGRAM) .)	Programming keys (Two or more) M-MDS
3	Replacing all the keys. (Steering lock unit is not replaced) (See NO.3 KEY REPLACEMENT PROCEDURE (CLEARING PREVIOUSLY PROGRAMMED KEY ID NUMBERS, KEY RE-PROGRAM) .)	Programmed card key Programming keys (Two or more) M-MDS
4	Replacing the PCM only. (See NO.4 PCM REPLACEMENT PROCEDURE .)	New PCM Programmed card key Programming keys (Two or more) M-MDS	-
5	Changing the additional key programming procedure. (Method for programming other keys using two keys that can start the engine is disabled.) (See NO. 5 KEY ADDITIONAL PROGRAMMING PROCEDURE CHANGING .)	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.
5	Changing the additional key programming procedure. Allows programming using two keys that can start the engine. (See NO. 5 KEY ADDITIONAL PROGRAMMING PROCEDURE CHANGING .)	M-MDS	New vehicles have this setting.
6	Replacing the steering lock unit. (See NO.6 STEERING LOCK UNIT REPLACEMENT PROCEDURE .)	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.
7	Replacing the keyless control module. (See NO.7 KEYLESS CONTROL MODULE REPLACEMENT PROCEDURE .)	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. Programming the card key. Programming the steering lock unit. 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.
8	Replacing several parts (PCM, keyless control module, and steering lock unit) at the same time. (See NO.8 THE PROCEDURE FOR WHEN SEVERAL PARTS (PCM, KEYLESS CONTROL MODULE, AND STEERING LOCK UNIT) ARE REPLACED AT THE SAME TIME .)	Parts to be replaced Programming card key Programming keys (Two or more) M-MDS	Refer to No. 4, No. 6, and No. 7 above and prepare the required items according to the parts to be replaced.
-	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:
- Card key
- 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.