Adam1945

I believe I understand everything thus far. If I put in the OEM mirrors with power fold option how do I get it programmed by dealer, do I need the activation code? can I drive vehicle with out flash for a while or do I need to get it programed right away( worried if I move mirror around it won’t be able to flash?) And also what does the program do? I have the 2016 diesel with original dl3 and memory for reference.