Comments On Trouble Symptom
WARNING: This page is about a different car, the 2017 Mitsubishi Mirage. However, it is still accessible from the selected car via links, so may be relevant.
If the hazard warning light and the dome light work normally, the ETACS-ECU may be faulty.
Alternatively, it is possible that the keyless entry hazard light answerback function was disabled by the customize function.