Hi, I figured out how to add autofold mirror. Mine is 2015 RHD.
First check output wiring from ETACS C417 and remote control switch C111, mine already has wiring from factory.
Use ETACS programing software to activate autofold option, you can choose aufold by ignition, by remote keyless entry, or by speed (you need to fold it first by switch).
Check if there 12V voltage from C12 or C22 connector, pin 20(unfold) & 21(fold).
Connect fold&unfold wiring from C12&C22 to F01&F06.
After make sure autofold works, you can buy pair side mirror assy with fold function & remote control switch with fold button.
You can also activate multimode RKE in ETACS option to fold/unfold mirror by multiple lock/unlock on RKE.