Futura SSA Automatic

[LP Wash]

Good morning I have a question about my automatic wash. It is an older Futura SSA wash and recently when the wash is done and exits the bay the rear door will not shut.
This just started and ive checked everything I could think of with nothing working. Any idea's?

 

[gomerpyle]

Which type/model door do you have. I ask because I had a similar issue with my Airlift XRS Door. It was a door issue not the carwash. Signal was going to door but door did not react. Turned out a bad relay switch in the Door Control box was the issue.