To be certain, you should:
* Consult your owner's manual: This is the best resource for the specific location on your vehicle.
* Look closely at the bottom of the radiator: The drain plug is typically a small, threaded plug, often brass or plastic. It might be slightly recessed.
* Feel around carefully: Be cautious as the radiator will be hot if the engine has recently been running. Feel around the bottom of the radiator for a small, protruding plug.
If you cannot locate it after carefully examining the radiator, a visual inspection from underneath the car might be helpful (use jack stands and take appropriate safety precautions if you lift the car). A photograph of your specific radiator might be helpful if you want to post it online for identification assistance.