Kaitlyn2004

Let's assume it's been sitting outside in the cold all night...

In my Honda Accord, what I would do is turn off air vents (since it would just be cold air...) and wait until the temperature gauge went up, then turn it to warm air/turn up fan

With my Q5 TDI, I wonder what I should be doing?

- Just leave it on auto?
- Crank up the temperature to really hot until it gets warm enough?
- Same method as my accord? Turn up temperature, wait until car temp is high enough to actually turn on fan?
- Something else????

Similarly, I *THINK* when I turn on AUTO, it also turns on AC. Should I just leave the AC light on 100% of the time? Seems... weird to me.

josedebardi

I'm pretty sure the TDI has an electric heater to warm up quicker... Look in the MMI settings for auxillary heater and set it to auto. On my SQ5 TDI it gets hot air in seconds thanks to this.
The AC being on De-humidifies the air making it better at De-fogging the glass - it uses more energy to cool/De-humidify then heat but will clear the screen much faster.

josedebardi

So in summary, don't do anything special!

spijun

The best way to warm up the car, start the car and drive - and enjoy the ride

All what you need a explained in the Owner's Manual

Good luck and enjoy

snagitseven

IIRC, in all modern Audis, if the climate control is set to Auto, the fans won't run until the engine warms up enough to allow warm air from the vents (same for cool air in the summer). So, start car, drive and the heating/cooling will take care of itself. The beauty of automatic climate Control technology is that it's truly automatic. I set the temp one time to 69 degrees, push the Auto button and forget about it until I get my next Audi.

bpp

Love the electric heater for the TDI.
The 'dehumidification' (compressor) may discontinue below a specific ambient temp.
The best way to do it...set the climate control to AUTO and your favorite temp, and on the MMI to set the aux heat to AUTO and forget it...forever. )

pedser

Something to remember in diesels is that they do not warm up by sitting idle. As you have seen many comments they have been to get in the car and drive, and that is what you need to do.

Personaly I leave all my settings in auto and 72 deg. (And yes auto heat on the mmi settings) in cold mornings go up to 74 only because I can "feel" the heat ....and after a few minutes back to 72.

But driving the car is the key to get it warm not sitting idle in the drive way.

Enjoy,

Q5 Bob

Always a good resource.

Rlk1

As snagitseven said, just leave it in auto. It was a cold morning in south Fl...by south Florida standards LOL, and i had my climate control set on auto. The fan didn't come on until the engine warmed up, and by then i was good since i used the seat warmers for the first time.

Coolieman1220

As others have said, just leave it on Auto. I usually turn my compressor off for a/c. When the engine is warm, it will start emitting heat in the right spots at the right temperatures so you won't get too hot. It will get to just the right temperature.