billyballer

I have a 96 A4 Quattro 2.8 that I use extensively as a ski car. It even has the winter package.

For some reason, audi decided to not let you turn the AC on when it is below 42 deg F.

Is there any known work arounds that I can make my AC work regardless of the outside temp? I rely on the AC to keep the windshields clear, which seem to fog up extra fast when it is cold outside. Seems like a big oversight as the car is designed to be a good winter driving car... except when you need to defog the windows and it is cold out.

Thanks,
-Billy

Tanner

Common problem. I had problems with it fogging up inside in my old B5 but not so much with the windshield, usually because of 2-3 people in the car after a good day of skiing.

You still can't turn on the AC when the temperature drops to a certain temperature in the new A4.

leonpro

Not even the heater? IMO, that's crazy. If they let you start the engine...

Tanner

The compressor doesn't run when it gets to a certain temperature (which is used for the AC).

leonpro

I would assume the discussion of AC would encompass both cooling and heating of the air.

But if we were talking about compressors, then I wouldn't disagree then why Audi prohibits its operating under very low temperature.

Tanner

heating and air conditioning... HVAC

leonpro

HVAC/R, don't forget Refrigeration

Tanner

You can install a small drink cooler in the glovebox!

leonpro

I'm with you.

DalD

I can't recall all of the details about how a/c works, but I think all modern vehicles inhibit the a/c operation when temp is below 32F. I THINK this is a safety feature (compressor can freeze as I recall), but it might also be to save fuel.

If you are below 32F outside, then your heater will defog your windows. You simply need to get the temp of the glass above the dew point, which is probably like 30-40F in cold weather.

Now granted, a/c would dry the air out immediately by effectively reducing the dew point, but the heater does the job too, once the car is warmed up.