Odd A/C problem

[gadgie]

On a long trip recently (200 miles), and on a hot day too,  the air-con in my 2016 mk7 GTI seemed to pack up.

I was getting little or no air from the vents although I could hear the blower running.  I tried the blend-door recalibration but that made no difference.

At the end of the trip I checked the aircon pipes in the engine bay - ice-cold, so perhaps that discounts gas loss. I pulled and replaced the main blower fuse and got cold air again - but the car had been stopped for 30-40 minutes by then.  The cabin air filter looked clean too.

Now, several days later, the a/c seems to be working but I haven't done another long trip yet and the weather hasn't been as hot as on the failure day.

I'll get it checked out at the next service but I wonder if anyone else has had a similar problem? I'm at a loss to explain what the cause of the failure was.

Andy

[Carbon VW]

Scan the car if possible with VCDS or similar to see if any fault codes are stored in the control modules. That’s a good start

[uzinusa]

Worth resetting the flaps in side the car that control the climate? Occasionally mine click by my feet and air flow evidently not as normal. It takes 30 seconds.
https://www.youtube.com/watch?v=VKwx3yvnanM

[gadgie]

Thanks for the suggestions - I did the reset flaps thing when the a/c first played up and it didn't fix it. I've been away since on a long trip and the a/c tends to last about an hour, maybe 90 minutes before the airflow peters out. Stopping for a quick coffee/pit stop, even only for 15 minutes and on starting again the a/c is back in full flow. For another hour/90 minutes.

I'm wondering now if this is a simple case of low refrigerant. The car is 7 years old...

I'm not superstitious but since the first post on this subject I've had an unrepairable puncture (resulting in 2 new tyres), a faulty schrader valve causing the TPMS to go off on one of the new tyres (puncture scare!) and just the other day I got out of the car leaving the keys inside and it locked itself. It's not supposed to be able to do that!

Andy

[Knottlatiger]

I've the same issue, did you change the battery recently? Mine is with VW atvthe moment so I'll reply with the issue

[gadgie]

I didn't change the battery, no. In fact, it hasn't misbehaved recently and the a/c seems to be working correctly.

Hope the dealership can diagnose yours,

Andy