Sod automated car washes.
Hand wash, find and repair imperfections much better.
1) Jetwash the loose big bits off and wet the car, dont get too close!
2) Warm water, NOT scalding hot, and proper car shampoo, as good as you can afford. Roof down working all around the car, sills and wheels last, turning and rinsing the sponge regularly.
3) Rinse... however you wish, with warm clean water.
4) Chamois... genuine article not that artificial rubbish, until dry.
5) Wax or whichever appearance enhancer you wish.
Dont do it on Hot days or in direct bright sunlight.