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Cabin Air Filter Replacement
 
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Pelican Technical Article:

Cabin Air Filter Replacement

Jared Fenton

Time:

1 hour1 hr

Tab:

$50

Talent:

*

Tools:

T20 Torx wrench, 6mm wrench

Applicable Models:

Porsche 955 Cayenne (2004-08)
Porsche 955 Cayenne S (2003-08)
Porsche 955 Cayenne Turbo (2003-08)

Parts Required:

Cabin air filter

Hot Tip:

Replace the cabin filter if there is a musty smell

Performance Gain:

Better filtration in passenger compartment

Complementary Modification:

Replace engine air filters
Replacing the cabin air filter is an often overlooked part of maintenance. Replacing the filter is a very easy procedure and is a great project for the first-time DIY'er. 

The cabin filter helps keep the air entering the passenger compartment of the car clean. It is sometime referred to the pollen filter. If you notice a musty smell coming from the car's HVAC vents, it might be a good idea to inspect and or replace the filter. 

Changing the filter is simple and will only take you a few minutes. It's a good idea to inspect the filter every time you change the engine air filters. The filter housing is located underneath the glove box. In this article, I'll go over the steps to replace it. 
Begin by locating the panel under the glove box on the passenger side.
Figure 1

Begin by locating the panel under the glove box on the passenger side. Remove the T20 Torx screw at the front of the panel (green arrow) and pull the panel down.

Shown here is the cabin air filter housing.
Figure 2

Shown here is the cabin air filter housing. Remove the two 6mm screws holding the access panel to the housing (green arrows) and remove the panel.

Under the panel, you'll see the cabin air filter (green arrow).
Figure 3

Under the panel, you'll see the cabin air filter (green arrow). Reach up inside the housing and pull the old filter out.

Once the old filter is removed, place the new filter up inside the housing and re-install both the housing access panel and the lower glove box panel.
Figure 4

Once the old filter is removed, place the new filter up inside the housing and re-install both the housing access panel and the lower glove box panel.

Note: There is a tab that runs along one side of the filter. The side of the filter with the tab goes towards the firewall. The tab faces the passenger door. The filter will slide easily in when the tab is in the correct position. Otherwise the filter will be difficult to insert.

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Comments and Suggestions:
gkarag Comments: the 6mm screws are actually 5.5mm on 06 base model
November 12, 2016
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it.
- Nick at Pelican Parts
 
Porschefishing Comments: Just bought a febi bilstein cabin filter 21318 has an air flow arrow on it,.should it
point towards the front of the car where the drain goes or point to the rear of the car please. only had the car a week and doest have a filter fitted.

The light can stay in the cover just remove the wiring connector.
October 25, 2016
  Followup from the Pelican Staff: the arrow points in the direction of air flow. - Nick at Pelican Parts  
JDT Comments: There is a tab that runs along one side of the filter. The side of the filter with the tab goes towards the firewall. The tab faces the passenger door. The filter will slide easily in when the tab is in the correct position. Otherwise the filter will be difficult to insert.
August 14, 2016
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it. I will have the article updated.
- Nick at Pelican Parts
 
toto Comments: AIRFLO ARROW POINTING TOWARDS ME OR AWAY FROM ME
July 9, 2016
  Followup from the Pelican Staff: In direction of airflow, into interior. - Nick at Pelican Parts  
Keith Comments: I also noticed when I turn the ac on in the foot vents bottom arrow under the instrument cover I get water coming out of the vent below and behind the driver seat. Where is this water coming from?
July 7, 2016
  Followup from the Pelican Staff: Likely from the cabin filter. - Nick at Pelican Parts  
Keith Comments: I have a wet passenger side floor mat. I checked sunroof drains, windshield drain, and drains under the wheel wells. I checked the evap tupe that penetrates the firewall into the engine bay and it was clear. The bottom part of the picture black box is sweating like crazy. Is there another point to drain this?
July 7, 2016
  Followup from the Pelican Staff: The sweating could be from the moisture. I would run a hose around the front of the vehicle to see where the water in getting in. - Nick at Pelican Parts  
Richard Comments: Hi, Can someone point out where the condensate drain is on the picture? Thanks
February 29, 2016
  Followup from the Pelican Staff: Picture three, far right, slanted tube. - Nick at Pelican Parts  
Bunka Comments: I finally gave up on removing the outlets from the under dash cover and went to the dealership. Yes, there is a special tool for this. They were kind enough to remove them for me and explained how to install them in the replacement cover. You do not need the special tool to install them. There was no charge. May be the only dealership on the planet that did something pro bono.
December 28, 2015
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
 
Bunka Comments: Attached is a pic of the back side of the 12 volt power outlets. I believe the outlets slip out from the front side. You will see that I removed the plastic clip from one of the outlets. There is no way that it
would go through the hole with the plastic clip attached. The hole in the
panel is not round, it has a flat side, which means that the outlets cannot be rotated. It appears that the outlets have tabs about 180 deg apart and just depressing the tabs would allow it to slip out, however these tabs are rock
solid and I cannot depress them which means, to me, that they are locked in some way. I have the new panel and the bare holes do have a flat side and there is one rectangular key way 90 deg off from the tabs on the outlet.

Ray Ashenhurst

December 24, 2015
  Followup from the Pelican Staff: Thanks for sharing. If you can't get them with a small flathead screwdriver or a small pick, you may need a special tool to detach them. - Nick at Pelican Parts  
Bunka Comments: I am replacing the lower glove box panel. Removing the light from the old cover was easy. I do not readily see how to remove the two 12 volt remote power outlets. They are unplugged and it appears that I have to remove the top part and rotate them to slip through the hole. Don't see how to remove top part and rotate.
December 18, 2015
  Followup from the Pelican Staff: Can you share a photo of the wiring? - Nick at Pelican Parts  
Mycaye Comments: Well as we all know the anxiety that mounts when doing work on your Porsche for the first time or as a "refreshing your memory" on how to get the project done correctly. You guys are Awsome as always right on point Thanks!!!!
November 7, 2015
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
bhaggen Comments: And while you're in there, clean out the condensate drain hose.
October 11, 2015
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it.
- Nick at Pelican Parts
 
dmb408 Comments: Maybe this will help someone get it quicker...but 7/32 worked perfect obviously people could have done the conversion but just in case people wanted to know. Just did it on 06 Cayenne S, and there was also one plastic connector piece connects onto the vent to the leftmost in figure 3 that was not below the cloth insulation like seen in figure 3 on mine factory must have been tired that day or switched general assembly procedures.
March 8, 2015
  Followup from the Pelican Staff: Thanks for sharing your installation process and experience. These type of comments add so much to the Pelican tech community.
- Nick at Pelican Parts
 
hcbr Comments: FYI, the screws for the filter is actually 5.5mm not 6mm
August 24, 2014
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it. I will have the article updated.

- Nick at Pelican Parts
 
markakraft1 Comments: Make sure you remember air flow direction. I assumed since the blower was sitting to the right and ducted into the filter housing and behind the filter housing I felt a heat exchanger assumed the flow was from right to left looking forward. Mt filter had an air flow arrow whereas the stock on didn't.
March 22, 2014
  Followup from the Pelican Staff: Thanks for the input on this one. We appreciate the help.
- Nick at Pelican Parts
 

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