Comments On Trouble Symptom
WARNING: This page is about a different car, the 2019 Mitsubishi Eclipse Cross. However, it is still accessible from the selected car via links, so may be relevant.
If the electric-folding door mirrors work normally, ETACS-ECU may be faulty. Also, the door mirror operation setting is configured for other than the folding/unfolding interlocked with the keyless entry operation, using the customization function.