If you have a remote control, most exterior lights that are "turned on or off" with the remote must be "reset" using the remote before any manual switch will operate the light. Often the "off side courtesy light" is operated from the same switch as the porch light or the scare light (big round white light up high on the bedroom wall). Your remote control hand unit may even have a "light symbol" on it, either as a separate switch or possibly as an optional screen on the LCD panel.
Often there is a switch either beside the "overhang door/wall" or sometimes inside the front compartment. Occasionally, with a convenience center, the switch is located there.
I'd first try the remote, if that doesn't work, then start looking for switches in the above listed locations. It's there "somewhere".... often, it is even an "overlooked switch right on the fixture"..... Those are called, "oops, where'd that come from?" switches.....
