Whistling noise 2013 958 - Rennlist - Porsche Discussion Forums

Notices
Cayenne 958 - 2011-2018 For newer Cayennes than the 955/957 series
Series II
Sponsored By:
Sponsored By:

Whistling noise 2013 958

Old 03-13-2018, 02:27 PM
  #1  
Michael Matteson
New User
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Default Whistling noise 2013 958

My Cayenne has developed a whistling noise in the cabin which is related to fan or vehicle speed. The noise occurs at high fan speeds or vehicle speed above 35 mph when it is windy or at higher speeds even with no wind (even with the fans turned OFF). I replaced the cabin air filter with a WIX filter and it did not eliminate the noise. I am thinking it has something to do with the heat A/C ducting. Does anyone know if removing the driver side ducting is DIY? Or should I be looking elsewhere beside the ducting for a solution?
Michael Matteson is offline  
Old 03-13-2018, 05:00 PM
  #2  
deilenberger
Moderator
Rennlist Member
 
Join Date: Mar 2011
Location: Spring Lake, NJ, US of A
Posts: 5,434
Default

Hi Michael, welcome to the Cayenne forum. I'm moving your posting to the 958 subforum since as you know - that's what you own.

As far as your problem - I think we need a bit more info on where the noise appears to be coming from... One test you could try for the AC ducting is simply turning off the fan, and then turning off each outlet with the rotary dial on the outlet. If one makes a difference - that might help us narrow down where the issue starts from. Also it isn't clear if you can make the noise happen when the vehicle is stationary by simply turning up the fan to max...

One other oddball thing you might try - assuming you have folding mirrors - when you hear the whistle - fold the mirrors in and see if the noise changes.. There have been some reports of whistling mirrors.

Meanwhile, hang on while I move the thread..
deilenberger is offline  
Old 03-14-2018, 05:23 AM
  #3  
ScootCherHienie
User
 
Join Date: Jun 2016
Posts: 523
Default

Common sources of whistles you hear inside the car:

Bearings in fan motor for heat/air conditioning
Weatherstripping around a window or door, may have been damaged by someone trying to break into the car
Sunroof seal releases at some point with wind coming from right direction and at the right speed, if the place where the seal isn't tight is small enough, you can get a whistle that is darn near impossible to localize, sounds like it's coming from everywhere.

To help localize the sound, having a passenger who can check where the sound is coming from while you are driving to replicate the whistle... very helpful... if it doesn't seem to be coming from the front, the passenger can get in the back seat or even in the cargo area to see if the sound can be localized better.
ScootCherHienie is offline  
Old 03-14-2018, 09:25 AM
  #4  
wkearney99
User
 
Join Date: Jun 2016
Location: Bethesda, MD USA
Posts: 1,166
Default

It also helps if the passenger can press on the windows/doors while there's noise to see if it changes.

As for DIY, you can remove anything if you're so inclined. The vents on the front are held in place with four clips. They're accessible from in-between the vent slats. They're small rectangular tabs. Use a small screwdriver to pull the tabs inward toward the center of the vent. That'll pull their spring part inward, away from the dash opening. You can do one side and then the other of a vent. Pull inward, pull the vent toward you and have the tabs rest on the dash opening. Repeat on the other side of the same vent. It'll then come forward and you'll see the four spring clips; two on each side. Re-install is just push the vent back into the opening until the tabs catch.

It's possible that something has fallen into a vent and is causing noise. One option for diagnosing this is by using an inexpensive
USB endoscope USB endoscope
gizmo. Poke it down in there to see if there's any obstructions.
wkearney99 is offline  
Old 03-14-2018, 10:49 AM
  #5  
Eskimo1
Addict
Rennlist Member
 
Eskimo1's Avatar
 
Join Date: Dec 2017
Location: Central PA
Posts: 362
Default

Originally Posted by wkearney99 View Post
As for DIY, you can remove anything if you're so inclined. The vents on the front are held in place with four clips. They're accessible from in-between the vent slats. They're small rectangular tabs. Use a small screwdriver to pull the tabs inward toward the center of the vent. That'll pull their spring part inward, away from the dash opening. You can do one side and then the other of a vent. Pull inward, pull the vent toward you and have the tabs rest on the dash opening. Repeat on the other side of the same vent. It'll then come forward and you'll see the four spring clips; two on each side. Re-install is just push the vent back into the opening until the tabs catch.
The video for the phone mount shows you what wkearney described above, if that helps.. https://www.suncoastparts.com/product/958PMK.html
Eskimo1 is offline  
Old 03-14-2018, 07:15 PM
  #6  
Michael Matteson
New User
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Default

Today I tried to replicate the whistling while the car was parked. Unable to replicate it by opening closing vents or varying fan speed. Whistling is coming from from dash area and is probably vent-related. I will try to look in the dash vents and see if I can find anything obstructing airflow.

Thanks for all the excellent suggestions!
Michael Matteson is offline  
Old 03-15-2018, 02:25 AM
  #7  
PTEC
User
 
Join Date: Sep 2004
Posts: 814
Default

When you hear the noise try changing the mode on the a/c to recirc mode.
PTEC is offline  
Old 03-15-2018, 11:31 AM
  #8  
genebopp
User
 
Join Date: Jan 2015
Posts: 80
Default

Mine has started doing something similar too. It hasn't been bad enough to chase yet. But there is a tiny whistle sometimes...I have been meaning to turn the "air panel" off in the PCM when I hear the noise, but never seem to have the whistle and time at the same time.
genebopp is offline  
Old 03-31-2018, 05:59 PM
  #9  
Michael Matteson
New User
Thread Starter
 
Join Date: Mar 2018
Posts: 4
Default

Originally Posted by PTEC View Post
When you hear the noise try changing the mode on the a/c to recirc mode.
Tried the recirc mode today when I heard the whistling noise, recirc mode made no difference, still hear whistling. It is very low volume, with the radio playing at a normal volume the noise cannot be heard. Still need to make time to investigate the possibility of something in the vent(s).
Michael Matteson is offline  
Old 04-01-2018, 01:17 PM
  #10  
RAudi Driver
Addict
Rennlist Member
 
RAudi Driver's Avatar
 
Join Date: Jan 2011
Location: West Coast
Posts: 1,915
Default

Run the system with the cabin filter removed and see if it's still there.
RAudi Driver is offline  
Old 04-02-2018, 06:09 PM
  #11  
genebopp
User
 
Join Date: Jan 2015
Posts: 80
Default

Originally Posted by Michael Matteson View Post
Tried the recirc mode today when I heard the whistling noise, recirc mode made no difference, still hear whistling. It is very low volume, with the radio playing at a normal volume the noise cannot be heard. Still need to make time to investigate the possibility of something in the vent(s).
Mine does exactly the same thing. It did it before the dealer replaced the cabin air filter and it still does it. There is no chance anything fell into my vents. I really dont know why it started about a year or so ago.
genebopp is offline  
Old 04-02-2018, 06:56 PM
  #12  
ScootCherHienie
User
 
Join Date: Jun 2016
Posts: 523
Default

I had a whistle that turned out to be the seal around the sunroof. I cleaned everything I could reach having to do with the sunroof opening and used rubber rejuvenator on rubber parts/seals and never had the problem again. My whistle required wind blowing at the car from a specific direction AND speeds above 35-40 mph. (raise back of sunroof to clean rear edges and back of sunroof track area, then open the sunroof normally to clean the front area.
ScootCherHienie is offline  
Old 06-09-2018, 04:36 PM
  #13  
EpiKAC
User
 
EpiKAC's Avatar
 
Join Date: Oct 2017
Location: Raleigh, NC
Posts: 91
Default

I've got a whistling too, and I've isolated it to the windshield defroster area/fans. Not sure if that area can be accessed from the top of the dash or whether the entire dash needs to come off.
EpiKAC is offline  


Thread Tools
Search this Thread
Quick Reply: Whistling noise 2013 958


Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: