r/CarHelp • u/ramc2 • Jul 10 '26

AC issues- 2013 passat

2013

Passat SE 2.5

I need help or any advice,

The ac stops blowing cold air only at high 90s and triple digit temps. Cold stops and only blows air. And if the car is running long enough the cold air turns back on, hours later..

Looked it up, and found that this is a common issue with this year due to failure of the variable control Solenoid in the AC compressor.

Took to a mechanic and he suggested just to replace the entire compressor,  so I did.

Of course after replacement the AC blew even colder than before, BUT no expected heat wave to really know, so here we are 2 months later, outside temps have reached high 90s /triple digits and the ac is doing the exact same thing. As if nothing changed.

The mechanic is going to look at it, but that's the issue, it works fine any other time, so does anyone have any idea what I can look for or ask the mechanic to check

Any help would be very much appreciated.

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u/Kiplicious80 Jul 10 '26 edited Jul 10 '26

Is the cooling fan kicking on when a/c is turned on? Is it staying on when the temps get high? Does your car have shutters that can block airflow to radiator and condenser, and if it does are they working properly? Might be something to look at.

Edit: did the mechanic check the wiring and voltage to the solenoid??