I can find no good answers to this one. The engine in my 2012 Patriot 4x4 (600 miles)has a cold start ticking noise. As the engine warms up, the ticking sound (sounds just like a valve tapping) is less pronounced, but it never goes away. The dealer just told me that they listened to my engine, heard the sound, started some other Patriots on their lot and they had the same sound, so the sound is common and nothing is wrong. I asked if the service department had actually checked anything, such as the oil pressure. The answer was "no, we just listened to it". I forced the issue, and they agreed to check the oil pressure, and I suspect the reading will be normal. If so, I consider this a design flaw.