Freon Charging

Hot Air Comes Out of Left Vents With AC On

Low and High Pressure Engine AC On

The summer is coming and my A8 D3 AC blows hot air out of all the left vents, front and rear: Center console, pillar vent while the right side is cold. Using the AC Manifold Gauge I could see the pressure of both low and high are still good, although on the low side. The