Hi Guys,Got problem with my E60 yesterday. A/c blowing hot air [left & right]. Diagnose by mechanic today and being informed that:1. After checking on external part [sorry i dont know the exact word] under the hood, they found out that there is no leaking. 2. Tomorrow they will check cooling coil and they told me most probably it is due to leaking on cooling coil.Betoi ka? If its due to cooling coil, any idea how much it will cost me?copper or aluminium coil? Btw, the workshop located at Glenmarie [opposite Hicom].Sifu, help me please.Cheers