Where is the thermostat on a 2003 Chrysler Sebring convertible?

The thermostat on a 2003 Chrysler Sebring convertible is not located inside the passenger compartment. It's an engine component. You'll find it within the engine coolant system, usually near the engine block itself, but the exact location can vary slightly depending on the engine type (2.4L or 2.7L). You'll need to consult a repair manual specific to your Sebring's engine to pinpoint the thermostat's location. Accessing it requires mechanical work and should be done by a qualified mechanic unless you have significant automotive experience.