In California the coin-op air/water are a scam. They'll take your money, but if you ask the attendant they can turn it on from the booth. Some may even have a secret button on the side to turn them on [1]. Unfortunately for EVs, the law only applies if you are purchasing fuel.

> California law requires that station operators provide free air and water to customers who purchase gasoline or diesel fuel. [2: Complaint form if you were denied]

[1] https://www.reddit.com/r/bayarea/comments/3sp0jj/fyi_gas_sta...

[2] https://apps4.cdfa.ca.gov/AirWaterComplaint/#:~:text=Califor....