[On the fence]

Hi,
Im driving my 2012 Touareg around Boston tonight. Its 36 degree with some rain and snow. I applied RainX anti fog to my windsheild to prevent fogging. Tonight I had soo much fog that I had to pull over and wipe down the windows. I put the vent up to full and a lot of heat came out but did very little to eliminate the fogging.
The windows had so much moisture on the window, it was like pushing water around! ITS VERY DIFFICULT AND DANGEROUS. Im ready to go see the dealer.
I attempted every combination, heat, AC open windows, closed windows and nothing working! Whats going on????
Any suggestions?
Thanks!
Foggy guy in Boston!

 

[herothedog]

Check if you have the air recirculation turned on, auto or off are typically the best positions for wet weather. In my 2010 I accidentally had it on during some rain and things fogged very quickly, but cleared as soon as I put it back to auto.

 

[On the fence]

De-fogger fan

I dont beleive that the fan is blowing enough air over the window. Its almost like its blocked?? It does not have the width or height to be effective.
Anyone have that problem?

 

[noobytoogy]

If your car is anything like my earlier Touareg, then wet people and their clothes guarantee that the windows fog!

However, with the aircon on and auto climate selected at 18/20/22/whatever [sorry, you'll have to do the C to F temperature conversions yourself!], then the screen should clear in moments.

Winter or summer, I never turn the the aircon off!

 

[nickm]

Not sure if the T3s have the ability to turn A/C off but you want A/C on almost always on these vehicles...the A/C dries the air and the fogging goes away.

 

[On the fence]

AC on

The AC was on but the defrost was blowing hot air.I adjusted the temp control to LO but heat still came out.
I also hit the Defrost button and the fan went into high mode but was blowing hot.
I wonder if something is wrong???

Im going to give it a try this weekend. We have more rain and snow coming. I hope the AC works in cold weather.
Thank you for your advice.

 

[noobytoogy]

The aircon will operate at whatever temperature you choose to set on the HVAC

It doesn't just provide cold air: it also provides dry air - thus no fogging.

Are you using the auto button and setting your temperatures of choice?

 

[On the fence]

Its working!

I went for a short drive and used the Auto feature and it worked!
I guess that what I neglicted to use that feature (AUTO) yesterday!
I bet I see a major improvement tomorrow when the rain and snow hit!

Thank you for the suggestion!

 

[noobytoogy]

Fingers crossed it's fixed.

I leave my car on auto year round and just adjust the temperature - normally 18C in the summer and 20-22C in the winter.

I know some folk think running the aircon all the time reduces fuel consumption but, hey, you bought a 2.5 ton gas/diesel guzzler, so GUZZLE!!