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Mercedes Cabin Filter Replacement
 
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Pelican Technical Article:

Mercedes Cabin Filter Replacement

Steve Vernon

Time:

30-60 minutes

Tab:

$10 to $50

Talent:

*

Tools:

T20 Torx driver, Rag

Applicable Models:

Mercedes-Benz W203 (2001-07)

Parts Required:

New air filters

Hot Tip:

Wipe down the inside of the airbox

Performance Gain:

Breathing cleaner air

Complementary Modification:

Change engine air filter

Every 10,000 miles or so, you should change the cabin air filters in your Mercedes-Benz. You should change it sooner if you live in a dusty climate or do a lot of driving on non paved roads. The cabin air filters helps protect the air that you breathe inside the car, replacement is a snap and should take less than an hour even if you change all three filters.

If you have Automatic Climate Control in your car, there are three filters you will need to change.

If you do not have option code 581, then you will only have to change the filter in the engine compartment.

Begin by opening the hood and locating the airbox on the right corner of the engine bay closest to the windshield.

There are three clips that hold the box to the air inlet along the firewall. Undo the clips and pull the lid up and out. Turn the lid over and remove the old filter. Wipe out any debris that you might have and install the new filter into the lid.

If you have option 581 or ACC in your car you will need to change the two charcoal filters under the dash. Move to the passenger footwell. Underneath the glove box is a plastic cover that is held on by two T20 Torx screws as well as a plastic hook in the middle. Remove the Torx screws slide it back and carefully work the cover around the trim and down onto the floor of the car.

There is a footwell light attached to this panel but you do not need to remove it for this project.

Underneath where the panel was located is the access cover for the filters. It is held in place by a sliding plate that has two tabs on the rear. Slide it back towards the seat and pull down. The filters are directly under this cover. They are only held in by the cover so they may fall out when you remove it. If they don't just reach up in there and pull them down.

The two filters are different sizes and will only fit in the car one way. The larger filter goes towards the driver side.

Installation is the reverse of removal.

There are three clips (red arrows) that hold the box to the air inlet along the firewall.
Figure 1

There are three clips (red arrows) that hold the box to the air inlet along the firewall. Undo the clips and pull the lid up and out.

Turn the lid over and remove the old filter.
Figure 2

Turn the lid over and remove the old filter. Wipe out any debris that you might have in the bottom of the box and install the new filter (red arrow) into the lid.

If you have option 581 or ACC in your car you will need to change the two charcoal filters under the dash.
Figure 3

If you have option 581 or ACC in your car you will need to change the two charcoal filters under the dash. Move to the passenger footwell. Underneath the glove box is a plastic cover that is held on by two T20 Torx screws (red arrow) along with a plastic hook. Remove the Torx screws slide the cover back and carefully work the cover around the trim and down onto the floor of the car.

There is a footwell light (red arrow) attached to this panel but you do not need to remove it for this project.
Figure 4

There is a footwell light (red arrow) attached to this panel but you do not need to remove it for this project.

Underneath the panel is the access cover for the filters.
Figure 5

Underneath the panel is the access cover for the filters. It is held in place by a sliding plate that has two tabs on the rear. Slide it back towards the seat and pull down.

The filters are directly under this cover.
Figure 6

The filters are directly under this cover. They are only held in by the cover so they may fall out when you remove it. If they don't just reach up in there and pull them down. The two filters are different sizes and will only fit in the car one way. The larger filter (red arrow) goes towards the driver side and the smaller one goes toward the passenger (yellow arrow).

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Comments and Suggestions:
Mj Comments: I have a 2004 Mercedes c240. I'm wanted to change the cabin air filter. Where is it located pls?
November 19, 2016
  Followup from the Pelican Staff: Under a cover at the right strut tower. Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Randy Comments: They are there and parts house shows the two cabin filters for my car and I bought them. I pulled the first cover down held by the two t-screws and can see a white styrofoam box but no metal plate that lets filters fall out in your hand. With a flashlight, I can see the corners of the two filters and they about a foot up in there about even with radio. They are there, but as of yet I don't want to take out dash. Mercedes put them in so there must be a reasonable way to change them. I will stay at it and report when I figure it out.
October 15, 2016
  Followup from the Pelican Staff: Check with the parts house for correct application. Thanks for the follow up. - Nick at Pelican Parts  
Randy Comments: I have a 2004 C230 sedan. I want to replace the two cabin air filters. Not fresh air under the hood, not the combustion air filter........the two cabin air filters. I have the same styrofoam before mentioned where everyone is telling me the filters are located. I think the styrofoam is around the evaporator and if I break it the condensation will star dripping on the carpet. I can barely see them way up there next to the radio but have no idea how to get to them. Does anyone know anything about this model.
October 10, 2016
  Followup from the Pelican Staff: if you removed the lower panel on the heater housing and no filter is present, your vehicle may not have them. - Nick at Pelican Parts  
kalbawee Comments: Hi. I'm trying to replace cabin filter, but there is large styrofoam piece that covering the place where cabin filters are...and can't remove this piece of styroform.Your website instruction shows no styrofoam - http://www.pelicanparts.com/techarticles/Mercedes-W203/BODY-Cabin_Filter_Replacement/BODY-Cabin_Filter_Replacement.htm

Is there some model does not have cabin filter?

My Vehicle: 2003, Mercedes, C230 kompressor, VIN WDBRN40J53A463158
April 11, 2016
  Followup from the Pelican Staff: Your vehicle may have a filter under the hood. Check near the right side strut, in the housing. - Nick at Pelican Parts  
luis gesualdi Comments: LUIS. I have E320 w211 2004 please were is the charcol filter? I have automatic air condition.thank you
February 21, 2016
  Followup from the Pelican Staff: In the right rear wheel well. Behind the liner. - Nick at Pelican Parts  
Gerald Comments: I have a 2001 c320 and wanted to know where I can purchase the two T20 Torx screws in the picture from figure 3. Both screws seem to have gotten loose and eventually lost throughout the years, so I wanted to figure out the part number and see where I can buy some. Thanks!
January 19, 2016
  Followup from the Pelican Staff: I’m not the best with part numbers.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Marco Comments: I have a 2002 C320 Station Wagon. While changing the air cabin filter, I noticed a broken cable please see attached picture, marked with a green circle and I can't find what is that for. Car starts, but I don't want to drive around without repair it. In order to place an order I need to know what is that connection. Please help me. Thanks
August 29, 2015
  Followup from the Pelican Staff: i'm not sure what that connector is for. I opened a post in our forums. A Pelican community member may be able to answer your question.
- Nick at Pelican Parts
 
Denis Comments: Does this apply to a 2006, Mercedes CLK-350 convertible?
June 26, 2015
  Followup from the Pelican Staff: Applies to Mercedes-Benz W203 (2001-07) - Nick at Pelican Parts  
Fred Comments: What is an option 581 I am looking under my dash and don't see a access cover just white foam that I can't remove. I have a 2001 C240.
April 9, 2015
  Followup from the Pelican Staff: Not sure. I don't have that info. A call to Mercedes-Benz may be in order. Let us know what you find. - Nick at Pelican Parts  
AJ Comments: I have a 2014 SLK 250 and want to change the cabin filter and the air filterengine. Can you tell me where they are located and how to access them?
February 13, 2015
  Followup from the Pelican Staff: We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 
JB Comments: Thanks Nick - you are correct. I was on the wrong article.
December 10, 2014
  Followup from the Pelican Staff: Ah, cool. Thanks for the follow up. - Nick at Pelican Parts  
JB Comments: I have a 2003 SLK320. The air filter is not located where you show in your pictures for changing the air filter. I have uploaded a photo of my engine compartment. If you have an updated picture and procedure I would appreciate it. Thanks
December 9, 2014
  Followup from the Pelican Staff: This article is for the cabin microfilter. Is that the filter you are trying to replace? - Nick at Pelican Parts  
Mike Comments: Helpful article but the two inside cabin filters don't seem to be listed when I go to cabin air filters in "parts". Where can I get them?
June 18, 2014
  Followup from the Pelican Staff: Give our parts specialists a call at 1-888-280-7799. They can help you find the right part. I will have the parts added to the article. Thanks.
- Nick at Pelican Parts
 

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