A/C is set on automatic--driver's side vents blow warm air while passenger side vents blow cold air--set on 68 degrees. Any input as to the cause?

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John B

Normally that is caused by a low level of refrigerant. Have it checked with gauges to see what the pressures are and have it topped off if necessary.

Thank you Stan BUT, I would think that both sides would blow warm if refrigerant is low--only drivre's side blows warm--passenger side blows COLD.

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John B

I work on these cars for a living. Trust me. Check the AC charge.

Thank you Stan. Can you tell me if the ambient temp is 85 degrees, what should the low and high side preasures be on this car??

Thank you mucho!!

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John B

I had to turn on the AC this weekend and driver side blows warm while passenger side blows cool not cold. I guess I need to check the charge.
Last year all was fine, does this mean I have a leak?

johneb48 - did you fix your problem and what were the pressure raedings ?

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2010 ML350 Bluetec
2012 Mustang Convertible