I have a 2004 VW Beetle, 56,000 miles, bought it a few years ago and noticed that the Blue Temp light would go on and after driving awhile it would go out. Now the Blue Temp light stays on all the time. I replaced the temp sensor and still the light stays on. Car not over heating, I can feel the thermostat is opening and closing. Could this be a water pump issue or a thermostat or possibly a bad instrument cluster? Any and all comments would be great! I'm a new Bee on the site! Thanks Again!