To be certain, you should:
* Consult your owner's manual: This is the best resource for the specific location on your model.
* Look closely at the front of your vehicle: Inspect the area in front of the radiator. Look for a smaller radiator or a series of tubes and fins integrated into the main radiator. This is a common place for transmission coolers.
* Search online for diagrams: Search "2011 Dodge Journey transmission cooler location diagram" on Google Images or a similar search engine. You might find pictures that match your vehicle.
Keep in mind that accessing this area might require some careful observation and possibly some maneuvering to get a clear view.