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[In The Case Of Installing New ECM]

WARNING: This page is about a different car, the 2018 Hyundai Ioniq. However, it is still accessible from the selected car via links, so may be relevant.

Perform "TEACHING MODE PROCEDURE DESCRIPTION (STEP BY STEP) " procedure with GDS.

(Refer to "IMMOBILIZER SYSTEM DIAGNOSIS (PHEV) ")

CAUTION:

When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.

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.
Disconnect the TCM Connector (A).
Disconnect the ECM Connector (B).

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Remove the ECM (C) from the bracket after removing the screw (A) and nut (B).

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Remove ECM (B) from the ECM and TCM bracket after loosening the bolt and nut (A).

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