Three days ago, while on my way to work, I noticed that my temp gauge read cold the entire way to work. The needle didn't move at all. When I left for lunch it worked fine and has worked perfectly until this morning. Again, on my way to work, the needle never moved reading flat cold the entire time. The heater blows hot air so the engine is getting warm. My fear is that without the correct temp registering, the fans will not engage and my engine might overheat. I cant let that happen. There has been no error messages on the DIC and the check engine light has not come on. My reflex is to replace the coolant temp sensor. Has anybody experienced this and if so did a new sensor fix the problem? Also, does anybody know the specific location of the temp sensor on this car? My thanks to the entire community.