HELP! 2001 Dodge Neon, Radiator Fan WILL NOT COME ON when car is off

Thanks for the tidbit about keeping the accessories cool, and not the engine. That certainly does make sense, and tells me that maybe my fan isn’t supposed to come on. I know earlier Neons (mid-late 90s) DID have the fan come on with the ignition off, but that lead to widespread problems with drained batteries etc. So maybe they stopped it with the 2001 model? Anyway, thanks for chiming in with good info!