LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1987 >> Starion ESI-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Keyless Operation System (Kos) - Lancer Evolution) >> Diagnosis >> Id Code Registration Necessity Judgment Table >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Id Code Registration Necessity Judgment Table: Notes

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Do not replace the engine control module and KOS-ECU at the same time. When replacing several ECUs, always replace one ECU at a time, register the necessary IDs in it, and then replace the next ECU.

The individual unique ID code is stored in the transponder (small transmitter) and KOS-ECU, engine control module (ECM), keyless operation key, and steering lock unit for KOS. Under the conditions shown in the table, the corresponding ID code has to be registered with KOS-ECU or the ECM again.

NOTE: The KOS-ECU memory can memorise the maximum 4 different keyless operation keys (keyless operation key ID codes and key IDs).
OPERATION CONTENTS AND PROCEDURE

Item Operation contents and procedure Reference page for registration contents
When the engine control module is replaced.
  1. Registration of ENG key code.
  2. VIN programmed.
 ENG key code & VIN reg (Refer to HOW TO PERFORM VIN WRITING ).
When KOS-ECU is replaced.
  1. Register the steering lock unit again.
  2. VIN programmed.
  3. Register all the key IDs of keyless operation keys again.
  4. Register all the keyless operation key IDs of keyless operation keys again.
  5. Register the TPMS transmittters.
When the receiver antenna module is replaced. Operation is not needed. -
When the receiver antenna assembly is replaced.
When the keyless operation key is added or replaced separately
  1. Register all the key IDs of keyless operation keys again.
  2. Register all the keyless operation key IDs of keyless operation keys again.
 Key and F.A.S.T.-key Registration (Refer to ID CODES REGISTRATION PROCEDURES  ).
When a keyless operation key is lost.
  1. Register all the key IDs of keyless operation keys other than the lost one again.
  2. Register all the keyless operation key IDs of keyless operation keys other than the lost one again.
When an emergency key is added as a unit. Operation is not needed. -
When an emergency key is lost as a unit.
When the emergency key is replaced by the full service key set or the handle lock service key set is replaced by the piece.
When the key(2) is replaced by the door service key set is added by the piece.
When TPMS transmitter is replaced. Register the TPMS trnsmitters. TPMS transmitter ID registration (Refer to ID CODES REGISTRATION PROCEDURES  ).
NOTE:
  • (1) KOS and KOS key are indicated as F.A.S.T and F.A.S.T.-key respectively in the scan tool screen.
  • (2) Key (the key that can be used to lock/unlock the door only)
scientia non olet · About LEMON Manuals