RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

A/C blowing hot air

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Old 07-11-18, 12:19 PM
  #16  
ericsan13
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Originally Posted by reposado2
Freon does not get used up. It is 100% recycled. If a cooling system require more freon it means there is a leak.
What's the deal with those A/C recharge refresh services then (for homes and cars)? Don't older cars slowly lose the strength of their A/C?
Old 07-11-18, 12:25 PM
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mikemu30
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Originally Posted by ericsan13
What's the deal with those A/C recharge refresh services then (for homes and cars)? Don't older cars slowly lose the strength of their A/C?
I believe it can lose some over time (years) even though it's not consumed since the joints are not soldered. My 5 year old Azera is showing signs - the air is cold but it struggles a bit on blistering hot days.
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Old 07-11-18, 12:46 PM
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reposado2
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Originally Posted by ericsan13
What's the deal with those A/C recharge refresh services then (for homes and cars)? Don't older cars slowly lose the strength of their A/C?
Sometimes its a very slow leak... Or a leak so small or hard to reach places that the tech cant find it. But losing freon = leak. BTW especially on an older car it may be more economical to ignore the leak and just add freon every other summer etc.

http://72.52.242.200/A-C-freon-low-l...w-q101095.aspx

http://hvac-talk.com/vbb/showthread....t%92s-going-on

Last edited by reposado2; 07-11-18 at 12:49 PM.
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Old 07-12-18, 06:07 AM
  #19  
PETERPHAN8
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Originally Posted by ravenuer
Ok, lets go back to the beginning.....it's summertime and it's blowing hot air no matter what you set it for and you take it to the dealer. It's blowing hot air while the dealer has it and they say nothing's wrong? They really need to explain how they arrived at that diagnosis.
I'd get them to give you a loaner, leave yours with them and tell them to give you a call when it blows cold air.
It blowed hot air out for like 30 minutes, by the time I got the dealer, the car already blowing cold air.
Old 07-12-18, 06:09 AM
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PETERPHAN8
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Thanks everyone for the input. I will monitoring this issue for couple months and I will let everyone know. May be it just my car is having this issue.
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Old 04-15-19, 08:22 AM
  #21  
SWORDLEE
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Originally Posted by PETERPHAN8
My 2017 Rx is having a weird issue with the A/C. It is blowing hot air out when i change the temperature above 70 degree. All I felt is hot air. I dropped the car in the dealer today and have them take a look, but they could not find anything wrong with the A/C. Is anyone facing this issue with their new RX ?

Thanks
I just buy my NX last month it keep blow hot air.. my car now at dealer almost 10 day still checking the problem..0
any suggest what can I do?
Old 04-15-19, 08:28 AM
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SWORDLEE
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I just buy my nx300 last month last week my car air con start blowing hot air,
now my car is still checking in progress at dealer, any suggestions for me?
Old 04-15-19, 02:34 PM
  #23  
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Originally Posted by SWORDLEE
I just buy my nx300 last month last week my car air con start blowing hot air,
now my car is still checking in progress at dealer, any suggestions for me?
I'll assume you're not from the USA, so don't know any dealer policies such as a loaner etc. If you do have a loaner, let them take their time. If you don't, I'd start leaning on your dealer. Non functioning AC isn't rocket science.
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