LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2021 >> Elantra N Line, Automatic DCT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 1.6L (Except HEV) >> Engine Control Module (ECM) >> Repair Procedures >> Adjustment >> ECM Neutralization procedure (With smart key)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ECM Neutralization procedure (With smart key)

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 diagnostic tool.

    (Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")

  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]