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I have the 2015 i20, that is currently out of warranty.

My car has a peculiar problem wherein the ac stops cooling after maybe one hour of driving.
If I then switch off the ac and change the intake to outside, I get cooler air.

After sometime, I can switch on the ac and I will get cold air for like half an hour again.

So the ac goes on and off again and again for a long drive.

I had shown it to the service center multiple times, but it's still not resolved.

The last time I took it to the service center, they replaced some component in the ac system saying it would resolve the issue.
As it was done under warranty, I did not get the old part; so I don't really remember what was replaced.

The local car/ac technician said that the issue could be due to the ac cutoff not happening properly.
He said this is due to freezing of the lines (if I check under the hood after driving for sometime, I see some condensation).

I'm beginning to lose trust in the Hyundai brand due to this single issue.

How can I resolve this issue once and for all?

BTW, I'm from India.
 

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I have the 2015 i20, that is currently out of warranty.

My car has a peculiar problem wherein the ac stops cooling after maybe one hour of driving.
If I then switch off the ac and change the intake to outside, I get cooler air.

After sometime, I can switch on the ac and I will get cold air for like half an hour again.

So the ac goes on and off again and again for a long drive.

I had shown it to the service center multiple times, but it's still not resolved.

The last time I took it to the service center, they replaced some component in the ac system saying it would resolve the issue.
As it was done under warranty, I did not get the old part; so I don't really remember what was replaced.

The local car/ac technician said that the issue could be due to the ac cutoff not happening properly.
He said this is due to freezing of the lines (if I check under the hood after driving for sometime, I see some condensation).

I'm beginning to lose trust in the Hyundai brand due to this single issue.

How can I resolve this issue once and for all?

BTW, I'm from India.
We have the same issue with our i20 2015. The ac works fine for an hour or so and then stops cooling. This issue we are facing since our car was new. Hyundai never could solve the issue. After 5 years we are still facing the issue.
 

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Hi
I am also facing the same problem with my elite i20 petrol 2015.
Did you find any resolution to this problem?
 

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2016 Elantra GT and 2011 Elantra Touring
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This problem is usually caused by the evaporator freezing over with ice and blocking air flow. Shutting the system off for a while allows the ac to start functioning again as the ice melts off the evaporator and air flow resumes. Usually the problem is a faulty evaporator core temperature probe. Could also be the system is a little low on refrigerant.
The evaporator temperature probe is usually accessed down near the left foot of the front right passenger.
This video shows an improper fix of a hyundai evap temp probe. I post this only to show how to access the item. Your vehicle may be different.
 

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This problem is usually caused by the evaporator freezing over with ice and blocking air flow. Shutting the system off for a while allows the ac to start functioning again as the ice melts off the evaporator and air flow resumes. Usually the problem is a faulty evaporator core temperature probe. Could also be the system is a little low on refrigerant.
The evaporator temperature probe is usually accessed down near the left foot of the front right passenger.
This video shows an improper fix of a hyundai evap temp probe. I post this only to show how to access the item. Your vehicle may be different.
Thanks a lot for sharing!! The air conditioner blows warm air when the external unit's heat exchanger and the internal unit's filters are clogged with burning, fluff, dirt, dust, and other debris flying from the street and falling from the room. As a result, the air conditioner compressor overheats and blows warm. Or a lack of freon in the system. This problem can also cause the compressor to fail. Until this happens, it is necessary to refuel the unit with freon. If you don't find such issues, try to contact specialists—for example, ask them for an aircon chemical overhaul.
 
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