Does this mirror connect to the factory wiring harness?

Yes — designed for factory mounting points and compatible with OEM electrical connectors. No adapter harnesses or rewiring needed if you're replacing an existing powered mirror.

Will the heating element work right away or does it need warm coolant?

Electric heating operates independently of engine coolant temperature. It draws power directly from the vehicle's electrical system, so it works the moment you flip the switch — even on cold starts.

What if the power adjustment stops working but heating still works?

Return within your standard window for a full replacement or refund. Test all functions before final installation — both power adjustment and heater element should operate smoothly out of the box.