Porsche Macan Forum banner

Radiator Flaps/Louvers/Shutters

1 reading
174K views 325 replies 98 participants last post by  Vrooooom  
#1 ·
Hi,
I'd like to like to know if it's correct that my macan s left radiator grill opened after I shut down the engine and lock the car.

This only when whether is very very hot like in these days in Italy (35° Celsius)

I wait for you
 
#2 ·
Active Aero


Correct, it will temporarily stay open for cool down purposes when needed even after you shut off the Macan... when driving it will vary.

Porsche Macan S - Efficiency-enhancing measures - Porsche AG

"Active aerodynamics
The radiator grille shutter opens the cooling air flaps only as needed. Whenever the cooling requirement is low, such as on relaxed drives, the radiator grille shutter closes. Aerodynamics are improved, which helps to improve fuel economy. If, for example, a sporty driving style is adopted and the demand for power increases, the cooling air flaps will open and let in the necessary amount of cooling air for increased driving performance."​

:nerd:
 
#6 ·
In these day here is very very hot...38° Celsius.

My Macan S petrol is always grill radiator opened and the front fan are always turned on after I turn off the car... To take inside a bit of air for cooling engine.

Is it ok?

I remember that my previous cars do that only few times after I go fast on street... Now my Macan S do that also when I go for few few km...

So after turn off and lock the car at high temperature I note that front grill is opened and the fan are working for cooling, and the vent
 
#7 ·
It's normal, plus the fan you might be hearing is from the AC and not the engine one.
 
#8 ·
What do you mean - very hot at 35 deg C? We just hit 40 deg C in Prague today and should be hotter still tomorrow. Can I come down to Rome to cool off?
 
#9 ·
+38 in Vienna. SOS. SOS!
to our US friends it's 101.4 F

escape to basement..
 
#12 ·
I was washing the Macan yesterday and noticed the flaps were open...had never seen them open while the car was off before. Upon closer inspection, it also revealed I had tagged a bird and it was stuck between the flaps and the radiator. Flaps appear to open and close fine, but would like to fish the remains of that bird out. I haven't gotten the car over my pit yet, but I assume I can access the radiator from below? Is there also a way to open & close the flaps manually? If not manually, what do I have to have running to keep the flaps open? TIA!
 
#16 ·
....I haven't gotten the car over my pit yet, but I assume I can access the radiator from below?
The louvers separate the radiator from the upper grill; but the radiator is always open to the lower grill. However, there is not much of a gap between the radiator and the louvers, so trying to reach in and up through the lower grill would likely be fruitless.

To get access from below, you'd have to remove the front skid plate, which also means removing or loosening the adjoining panels to the left and right of the skid plate as well. Perhaps it would be easier to remove the plastic panels on top, in the engine bay, for access.

If you are able to get the louvers open, avoid sticking your hand through them without first blocking them open with a solid piece of wood or something similar. You don't want to take a chance on the louvers closing while you're working in there. Sorry I don't know how they are actuated, or how to properly lock-em-out. Perhaps someone else here does. Best of luck finding the path of least resistance.
 
#13 ·
You mean the "flaps" on Macan's wings??

:D
 
  • Like
Reactions: Louie Zoi
#14 ·
#17 ·
I have cleaned the area inside and the radiator before, albeit while the engine was hot and the louvre still opened, with a garden hose. I think everyone should do that once in a while because I washed away lots of dead bugs sticking to the radiator fins. I don't know how to manually open it, just took the opportunity to wash it while it was opened with the engine still hot. Sorry I can't remember if I was leaving the engine running while I washed it.
 
#26 ·
So, do you know whether the louvers shut as soon as you started the car? Just wondering if they simply keep their last position until the engine is restarted.
 
#22 ·
Mine is always shut after turning off the engine, in any weather.
 
#30 ·
Ditto today.
 
#31 ·
I've never seen mine open! I would love to be able to open it with the car parked and engine off... in order to look and see if there's any bug debris or insect residue that I could hose off.

I do not think there is a way to have it open with the engine off & the car parked.
 
#34 ·
If you want them to open for cleaning, turn on the AC. That is for sure. Mine stay open after shutoff if the AC was on, but not otherwise, I think.
 
#36 ·
Didn't even know it opened and closed. Just learnt something!
 
#37 ·
Active cooling it is. Many new cars have this system.
 
#38 ·
Only after seeing this forum post, did I pay attention. I've seen mine open AND closed. It probably depends on engine temp to determine if it's open and or closed. I had a Mini Cooper Countryman that just had the fan that would run after the engine shut off, rather quiet normally, but I had a failed sensor (twice) that resulted in the little guy running its fan on SUPER HIGH for an hour or more during my ownership. I suppose having a flap open and or closed is better than hearing the "WRRRRRRRRRRR" from inside my house at 1am.
 
#41 · (Edited)
  • Like
Reactions: springct
#59 ·
Motor failed at 6k miles, has anyone experienced this? It was replaced under warranty but I wasn't sure if this should be a concern going forward.
I just experienced the front grill motor failure this week - at least that's what I think it is. The air intake "louvres" are no longer open and I can hear the motor whirling when the vehicle is turned off. ~23,000 miles on my Macan turbo. Hopefully I won't have to wait long for parts.