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I have a 2011 Toyota Sienna XLE with 57k miles. I took the car out today and drove it 94 miles (round trip). I noticed that the A/C wasn't as cold as it usually is. It's 85 degrees and humid here in Chicago. Sometimes it would blow hot air sometimes cold air. I did notice that that the front blower motor has been making noise for a while now. Can that have anything to do with the A/C blowing hot/cold air? Or is the A/C compressor going bad?
 

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It might need some R-134a refrigerant added to the A/C system. I had to add a can of refrigerant to my 2012 Sienna last year when I noticed the cooling was getting weak. If you have never added refrigerant before now, that's probably all it needs.
 

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It might need some R-134a refrigerant added to the A/C system. I had to add a can of refrigerant to my 2012 Sienna last year when I noticed the cooling was getting weak. If you have never added refrigerant before now, that's probably all it needs.
What's the process to add refrigerant?
 

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You can buy a R-134a refill kit (includes a can of refrigerant, connector hose, etc.) at any auto parts store. Carefully follow the instructions included with the refill kit. If you're not sure you want to do this yourself, almost any repair garage can add refrigerant.
 

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if there is a lack of refrigerant if there is a leak to find the leak, a specialist will put a dye in the R-134a gas by filling it and voila you have 80% to find where the leak comes from.


here is the underside of my 2015 sienna on the right rear passenger side, I removed the plastic protection
46983
 
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