Noticed today that my A/C is blowing warm on both of my passenger side vents while it's cool on both the driver's side vents?
Its caused by low refrigerant so you most probably have a leak. My condenser has a hole / crack in it on the drivers side (UK car). If you look through the grill up towards the bonnet. Pics attached. Audi fixing mine under warranty as its an Approved Audi car and 2 months old to me on a 2017 plate.
Refrigerant is about £150 to re gas if its R1234YF or £50 if R134A (new gas is a rip off) and condenser is around £100. It takes about 3 to 4 hours to replace.
Yes it most probably is. Some leaks are hard to find and it takes a good AC engineer to find them. Normally the condenser is the problem as the dryer is built into the condenser and its in front of the radiator.I think you are right about the low refrigerant causing it because since I had mine refilled it's been fine, I imagine if the problem still persists after a re-gas then it could well be a leak somewhere.
I have heard some NEW cars (not specifically VW group) that have had low gas due to "mistakes" or the cost of the gas when the car was produced. Gas R1234YF was in short supply during Covid lock down I guess?Unlucky I suppose, mine is holding pressure fine since the top up.
If things change as time goes by I’ll need to investigate further myself.
I blame the garage that serviced it for not filling it correctly as until that point it had been fine.
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Do you have pictures of that valve and the location pls ?
I tried to remove but it is not only that one screw near legs.. it has to be all rmoved so the whole centre so bigger job ahh well ..I don’t have a picture but it’s built into the side of the compressor so should be fairly easy to see. Audi replaced it under warranty and Aircon has worked flawlessly for the first time in 3yrs. Been 3weeks now without issue