April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 -"Neutralizing Of ECM ")
  (Refer to - "IMMOBILIZER SYSTEM ")
2. After finishing "ECM Neutral mode", perform "Keyteaching" procedure with GDS. (Refer to - "Teaching Procedures ")
  (Refer to - "IMMOBILIZER SYSTEM ")
[In the case of installing new ECM]

Perform "Key teaching" procedure with GDS. (Refer to - "Teaching Procedures ")

(Refer to - "IMMOBILIZER SYSTEM ")

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 - "Neutralizing Of ECM ")
  (Refer to - "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]

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.

Turn ignition switch OFF and disconnect the negative (-) battery cable.
Remove the battery.
(Refer to Engine Electrical System - "BATTERY ")
Disconnect the ECM Connector (A).

Fig 1: Disconnecting ECM Connector
Courtesy of HYUNDAI MOTOR AMERICA
Remove the mounting bolts (A) and then remove the ECM (B).

Fig 2: Removing ECM And Mounting Bolts

G12024880

Courtesy of HYUNDAI MOTOR AMERICA