Aircon Problem E39 528i Y2000

[BMWE39KL]

Hi All, I would like to find out from anyone with an E39 in regards to a possible air con problem with my car. I have a 528i M52TU Year 2000 car that I bought from AB. The car air con seems to exhibit a strange problem with symptoms as follows:- 1) First thing in the morning after a nights rest, the car air con blows warm/un-cooled air for the first 3 to 5 minutes then becomes OK with cold air.2) When I next use the car after 2 to 3 hours break, air con works immediately i.e. cold air from start without any delay.3) If the car is left unused for ~ 6 to 8 hours and started again - air con misbehaves and needs ~3 to 5 minutes before cold air is felt.4) Car has air con gas filled up and not leaking based on AB findings. AB says it is normal for E39 to blow warm/un-cooled air for the first 3 to 5 minutes after a long period of unused - is this true? Does any other E39 have the same problem? Or is this normal behavior for E39 air con?

 

[chaching]

Based on my experience, the compressor doesn't run for the first couple minutes, hence the uncooled air, this is done in order to ensure the longevity of the compressor.

 

[Bailey]

from wat ive learned from all the sifus, try to pay a visit a guy near epf pj......he's good in a-con

 

[cromok]

my aircon is like yours.

 

[AstroCreep]

Had similar problem.
First culprit was thought to be the air-con resistor... so tukar.
The day after problem still on and off... suddenly two/three days later back to ok.

Till today am not too sure if it was the resistor problem. Since it's ok already, I didn't want to probe it more.

Strange...