Resetting the maintenance light on a Toyota Camry is often straightforward. Typically, you can do this by turning the ignition to "ON" without starting the engine, then pressing and holding the trip reset button until the light goes off. It can vary slightly by model year, though. Have you tried this method already, or is there a specific model year you're working with? If you're dealing with something different, let me know—I'm here to help!