I have an 06 G35 Coupe with an odd climate control issue that I have been tryng to solve. If the temperature outside is below 45 degrees or so, then the heat and A/C will take at least 25 min of driving before the fans start up. This happens both in automatic and manual mode for the climate control. The display will actually show the fan speed increasing when in automatic mode as the car warms up but the fans dont spin until almost exactly 25 min. every time. This is after both city and highway driving. The car gets up to operating temperature fine and you can even feel the heat radiating from the vents while driving. I have made sure that there is enough coolant and that the system is bled. What really confuses me is that when the outside temperature is warmer, I do not have this issue. I understand cars need to heat up before the HVAC kicks on but a minimum of 25 min. before it does is definitely way too long. Any help with this would be greatly appreciated.