People,Found this in a forum.'I'm too excited to inform you about a new discovery that I've made over the last week end. Maybe some of you guys were already aware of that but I wasn't.If you press the "auto" and the rear window "defrost" buttons at the same time while the car is running, the climate controls display's changes into a data display.On the left hand side you will see a number between 1 and 12 and on the RHS you will see an other set of numbers. If you press + and - of the climate control, you will see that the numbers on the LHS change between 1 and 12. I couldn't figure out all of the steps between 1 and 12 but I'm sure that step 6 shows the actual rpm and step 7 shows the actual speed in km/h. I also assume that steps 1 and 2 show oil and coolant temperatures. so it is for you guys to figure out the rest. If I'm correct about temperatures, there is no more need for extra gauges. I hope this was something new for you guys as well. I asked about it to my service but they didn't have a clue about it. Enjoy your new trick'Tried this on my E36 and indeed it works. Still not sure what those numbers on different channels mean. Can anyone figure it out?