Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2009LANCER L4-2.4L (4B12)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSKEYLESS ENTRYTESTING AND INSPECTIONPROGRAMMING AND RELEARNINGID CODES REGISTRATION JUDGEMENT TABLE
2009 Mitsubishi Lancer L4-2.4L (4B12)
ID Codes Registration Judgement Table
2009 Mitsubishi Lancer L4-2.4L (4B12)SECTION ID Codes Registration Judgement Table
The contents of this article and images reflects the changes identified in TSBs - 10-42a-002, and 10-42a-003.
ID CODES REGISTRATION JUDGEMENT TABLE
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 memorize the maximum 4 different keyless operation keys (keyless operation key ID codes and key IDs).
KEY SUPPLY UNIT
KEY SUPPLY UNIT LIST FOR INDIVIDUAL KEY
KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY
Registration flow chart
ID CODES REGISTRATION JUDGEMENT TABLE
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 memorize the maximum 4 different keyless operation keys (keyless operation key ID codes and key IDs).
KEY SUPPLY UNIT
KEY SUPPLY UNIT LIST FOR INDIVIDUAL KEY
KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY
Registration flow chart
Registration Flow Chart:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.