When I shut off the engine on a hot day when I've been driving in bumper to bumper traffic and the car is running a bit hot, the cooling fan on the A/C unit at the radiator as well as the fan that blows air into the car keep going. The lights on the A/C and fan controls on the dash stay on too. I can shut off the fan blowing air into the car at the dash, but the fan on the radiator continues to run. Eventually it shuts off. I can understand the cooling fan running after shutting off the car until the temp declines, but not the A/C fan. The rad cooling fan is off at this point. And what's up with the fan that blows air into the car that doesn't go off? This is a new problem. HELP!

Thank you in advance for your thoughts.