Originally Posted by Haik2hov

Hello everyone I have a 2010 E350 the AC is not blowing cold air. I also read a post that someone had the same issue with the AC and the BT being choppy and he had software update and solved the AC issue. Has anyone have this issue. I’m wondering if I need to get a software update because my BT is also choppy sometimes.

Originally Posted by Haik2hov

I will get it checked. When I put the AC/PRO gauge on to check is the r134 is low it’s in the red zone. I don’t think the compressor is kicking on. I am also wondering if I should let some of the freon out to see if the compressor kicks on. Please let me know what you think. Thanks

Originally Posted by Haik2hov

Can you tell me what’s a good OBD2 scanner please

Originally Posted by Senecan

You don't have a clutch. The compressor is a variable displacement compressor, it's always on. The flow of refrigerant and piston swash plate angle is controlled by a solenoid in the compressor body. If you are over-pressure for whatever reason, the high-pressure switch will trip the ECU to cut operation to avoid damage to components. Open the high side Schrader valve and vent refrigerant to atmosphere a little at a time til you get pressure in the green on the low side. Do this while the car is running. Don't worry about the tree huggers, 134a contains no chlorine, therefore no ozone-depleting effect. It is, however, a greenhouse gas. But so is everything else. Let us know how it goes.