BMW Repair: 2001 BMW 325i A/C problem, 2001 bmw 325i, side ac

Question
The passenger side ac blows only warm air. The driver side blows cold air but not the cold like used to be before.

Answer
Likely freon needed.

Check and see if the a/c compressor comes on (clutch engages) when you switch the a/c on.  If it does, then you likely have freon, and the problem may be your heater valve is letting hot water into the heater core, and fighting your ac