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Home >> Hyundai >> 2013 >> Sonata GLS >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.4L (Except HEV) >> Engine Control Module (ECM) >> Repair Procedures >> Removal
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Repair Procedures: Removal

CAUTION: When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below. [In the case of installing used ECM]
  1. Perform "ECM Neutral mode" procedure with GDS. (Refer to "IMMOBILIZER " )
  2. After finishing "ECM Neutral mode", perform "Key teaching" procedure with GDS. (Refer to "IMMOBILIZER " )

[In the case of installing new ECM]
Perform "Key teaching" procedure with GDS. (Refer to "IMMOBILIZER " )
CAUTION: When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.
[In the case of installing used ECM]
  1. Perform "ECM Neutral mode" procedure with GDS. (Refer to "SMART KEY " )
  2. After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.

[In the case of installing new ECM]
Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
  1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
  2. Disconnect the ECM Connector (A).
    Fig 1: Identifying ECM Connector
    G07366042Courtesy of HYUNDAI MOTOR CO.
  3. Remove the air cleaner assembly (Refer to "INTAKE AND EXHAUST SYSTEM " ).
  4. Remove the mounting bolts (A) and nut (B), and then remove the ECM (C).
    Fig 2: Identifying ECM Mounting Bolts
    G07366043Courtesy of HYUNDAI MOTOR CO.
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