My Fan Comes On When I Lock My Car and Stays On. What's The Problem

Hello, no way of knowing without finding out what's happening by testing the vehicle first hand. You'll need use of a Mini compatible diagnostic tool for powertrain, body and chassis modules. You'll need workshop manuals and wiring diagrams. Make sure there are no aftermarket components like alarms tapped in that shouldn't be there. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops