AC problems
 

The AC on my 2004 4.4 X5 has started to only blow cool on the LH side and warm on the RH side. There are no smell's from the AC when you start the car up and the air blowing through the vents cools down slightly after you have been driving for 10 mins. Living in Bahrain and driving around in the heat of summer it's not much fun.... Could the heater valve be at fault. And if it is where about is it located in the car.