Anyone else get cold feet driving the P!G?

With the heater on AUTO mode I find that there isn't enough warm air blowing in the drivers footwell to really warm my tootsies. There is more then adequate warm air coming out of the face vents, but to get my tootsies warm I have to switch off AUTO and direct all the air to the footwells (or turn the heat up to what is higher then should be needed..)

Also - I miss the hot/cold control for the face-level vents that later model Bimmers have. It's nice to have cool air blowing on my upper body (keeps me awake) with nice warm tootsies. Can't easily do that on the Cayenne..

 

I haven't really noticed this issue with our P!g...

 

When you're in AUTO mode I believe the AC compressor is running. Try switching to ECON and see how that works at the same temps...

 

I can get warm feet IF I play with the controls (turning AUTO off) - but I really shouldn't have to. And that's what I'm wondering if anyone else has a problem, or if one of my damper motors isn't opening the footwell vent as far as it should (or closing another vent.)

Odd thing I noticed playing with the controls. If I set it to footwell only - I still get air from the face level vent next to the drivers door (haven't checked the passenger side..) If I set it to face level only, I get air from the central vents and the vent near the door. Didn't try just windshield setting, but that might be interesting.

It seems if I close the face level vent by the door with the manual control on it - more hot air comes out of the foot vent.

Hence my thought there my be a damper motor on the fritz..

 

Hey Don - mine behaves the same way, I believe (haven't done the tests that you did but I definitely notice similar behavior). Either both our vehicles have a similar problem, or this is just the way it works. I believe it's the latter.

I view the AC compressor as having 2 purposes. One to cool and dry the cabin air in hot weather and two, to dry the cabin air enough to keep the windows (especially the windshield) from fogging. Even though you set the temp higher the compressor still has a cooling effect on the air so the air will be cooler at the same temp setting than it would be without the compressor.

My car definitely behaves the same as yours does wrt where the air comes out.

On both counts I completely understand how you could think there's a problem but I think this is just how the HVAC system works in these vehicles. I'm not so sure it was designed to work the way it does or if Porsche deems it "good enough"....

 

Jay,

Sort of what I think also.. I guess they figure it's better then the heat exchangers used on the 356, or the gasoline powered auxiliary heater on air-cooled cars..

It really is way behind what BMW has (and has had for about 20 years).. it's almost as bizarre as the '80's BMW 5-Series HVAC which had a completely seperate AC system..

One thing I notice - on my BMWs - there is an air outlet up to the right of the gas pedal - so heat arrives right on your toes (or cooling) and the other outlets are positioned better so you can feel the warm air. On the Cayenne, there are rather small outlets, and it feels like only two of them, that blow warm air someplace along the tibia.. which isn't very effective at keeping the tootsies warm.

I guess I'll try keeping the side face level vents mostly closed, and see if that forces enough warm air out the footwell vents..

 

Yup - had a couple of BMWs myself and I agree with you. I especially miss BMW's cool air up top, warm at the feet feature - don't know why more auto makers don't do this...

 

not a problem in my cayenne, i drow last week in -37celcius = -34F??
the car is so well isolated, whole car is nice and warm, check upp under the dasch over the gas/throttle you have a vent there and it can easely be a bit ao plastic or the carpent covering the vent. have you changed air inlett filter under passanger compartment, if its full of **** you will have a lower fan.

sorry for bad english=)

 

Looked tonight. There are only two small vent holes into the drivers side footwell. Each about where my shin would be in a normal driving position if my feet were both on the pedals at the same time. Since most of the time my left foot is on the left-foot-rest, the one over the brake pedal is blowing at nothing.

My cabin filter is clean, replaced it myself last year.. it's not an issue with the quantity of air being delivered overall, it's the quantity and aiming of the air going to the drivers side footwell. The two tiny vents aren't going to deliver a whole buncha air (if both of them combined have an open surface area of 3 square inches I'd be be REALLY surprised.)

BTW - your English is immensely better then my Swedish (which is limited to reading subtitles in Swedish films..)

 

I have the same problem. Noticed my feet were frozen on cold days.

Try this; toggle you fan to high and divert all the air down with the manual controls. Then feel the quantity on both sides of the car. My passenger side has much more air coming out of those little holes. The driver side has almost no air flow and I can feel some air leaking around the panels.

This leads me to believe the panel is not connected to the duct but I can't figure out how to pull the lower panel out to check this. I only spent about 30 minutes f'ing with it but it seems the parking brake cable has to be diconnected to pull the kick panel out.