There is a whining sound coming out of the front dash in my 2001-740 IL.
Sounds like it relates to the A/C when it comes on. This sound appears after the engine is at normal temperature, turned off and sits for 10 minutes.
After restart and driving for 1 minute the sound ids gone.
During cold weather (up to 40F) it not an issue.
Could be a fan motor drawing air into the automatic climate control is going bad?
Or could it come from the transmission?
This is one of those problems which does not exists as soon as I pull into the BMW service to demonstrate.......
Thank you in advance for opinion or advise.