I've seen my temp gauge stick for a short time. When I got in it to go to a store a few weeks ago, the weather was turning bad and the temp was dropping fast. When I parked, it was still just below freezing at 31. When I got back in, the temp was still 31, but I knew it had already dropped almost 10 degrees outside. After about 2 miles of travel, the temp gauge suddenly started moving downward quickly. Within another mile it was under 20 degrees like it should have been. I haven't seen this happen again, so unsure if it was a temp monitor hardware issue, or a software issue.