This noise only occurs at start up during cold weather, below 10 degrees F. As soon as the ignition is on the noise starts. Turning the key further starts the engine and the noise continues with the engine running. If I cycle the starting process a few times the noise goes away, sometimes in a few minutes, sometimes longer. The noise is in the dash above the steering column. The noise ramps up like a siren but has a buzz to it. No check engine light. Everything works fine just the noise is a problem. I have an MP4 video clip of the sound but the file is too large to attach. Any ideas what might cause this?