HI Welcome to the Jaguar Owners CLub :) Yes these are missing the temprature guage and now the car will warn you when the engine is over heating. To be honest, if the car is over heating it can take a few minutes to reach a critical point.. how would you ever know with a normal temprature guage without checking it every minute. So I guess a good warning chime when the car is over heating is the best way i guess.