M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Cabin filter

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Old Oct 8, 2016 | 02:04 PM
  #1  
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From: Torch Lake, MI
2018 GLC 300
Cabin filter

Has anyone changed the cabin air filter in ML 500 2006. I ordered a filter but the mechanic said it was wrong one. Supposedly you change it from underneath glove box but he said nothing there. I received one filter which he says is too small. Now I notice that there are 2 cabin filters. Any help would be appreciated.
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Old Oct 8, 2016 | 05:30 PM
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The glove box is completely removed. The filters 2ea will slide into a compartment in the firewall. This is a fairly easy DIY if you take your time, and you have a flexible body. There are a few YouTube videos on this. Most important part is take your time.
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Old Oct 8, 2016 | 05:47 PM
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From: Torch Lake, MI
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Originally Posted by skipwalton350
The glove box is completely removed. The filters 2ea will slide into a compartment in the firewall. This is a fairly easy DIY if you take your time, and you have a flexible body. There are a few YouTube videos on this. Most important part is take your time.
Can it be replaced from inside the engine compartment on the firewall?
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Old Oct 8, 2016 | 10:00 PM
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No, it's replaced from inside the car. Not very many screws to remove, it seems hard to do, but once you have done it the first time it's easy. Like I said, take your time,band watch the videos numerous times before you start.
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Old Oct 9, 2016 | 05:59 AM
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As said its the glove box out, all easy enough the end screw is an odd self tapper the rest are bolts.
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Old Oct 9, 2016 | 08:00 AM
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From: Torch Lake, MI
2018 GLC 300
Cabin air

Originally Posted by zenman63
As said its the glove box out, all easy enough the end screw is an odd self tapper the rest are bolts.
Appreciate the feed back zenman. My mechanic still thinks there is a filter behind a box on the firewall inside engine compartment.
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Old Oct 10, 2016 | 10:46 AM
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Originally Posted by Spartydano
Can it be replaced from inside the engine compartment on the firewall?
Yes, carefully. While the correct way is to disassemble the glove box, they can be massaged and squeezed out and back in from the engine bay. There are several people that do this and quite likely some Benz mechanics that do it this way because of the simplicity.
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Old Oct 10, 2016 | 05:29 PM
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As we are right hand drive I cannot see how it possible from under the bonnet.
Glove box in 10mins job done its 6 screws after all, very simple.
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Old Oct 11, 2016 | 10:33 AM
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Originally Posted by zenman63
As we are right hand drive I cannot see how it possible from under the bonnet.
Glove box in 10mins job done its 6 screws after all, very simple.
Hadn't considered RHD but for us LHD people the engine bay access is two clips to release for access.
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Old Oct 11, 2016 | 05:24 PM
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While on the subject of cabin air filters, remember, you have a choice of installing an activated carbon or plain type.
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Old Oct 25, 2016 | 12:14 AM
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These photos may help for the cabin filter replacement procedure doing it from the engine bay side. This is on a 2008 ML 320 CDI LH drive vehicle. At the time I was also replacing the engine air cleaner and fuel filters and so items unrelated to the cabin filters will be noted are removed in the first photo.
Attached Thumbnails Cabin filter-01-cabin-air-intake-box-location-engine-bay.jpg   Cabin filter-02-cabin-air-intake-box-removed.jpg   Cabin filter-03-cabin-air-intake-box-botom-securing-slots.jpg   Cabin filter-04-mann-cabin-air-filter.jpg   Cabin filter-05-2-x-cabin-air-filters-required.jpg  

Cabin filter-06-new-cabin-air-filter-being-installed.jpg   Cabin filter-07-2-x-new-cabin-air-filters-installed-side-side.jpg  

Last edited by SiRudBi; Oct 25, 2016 at 12:30 AM.
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Old Oct 25, 2016 | 08:16 AM
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From: Torch Lake, MI
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Originally Posted by 2008 ML 320 CDI
These photos may help for the cabin filter replacement procedure doing it from the engine bay side. This is on a 2008 ML 320 CDI LH drive vehicle. At the time I was also replacing the engine air cleaner and fuel filters and so items unrelated to the cabin filters will be noted are removed in the first photo.
This is very helpful. Thank you.
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Old Dec 31, 2019 | 08:49 PM
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2017 GLS550
I have a 2017 GLS 550 with the P21 Air Ionization Package. Does anyone know the proper part numbers for the cabin air filters?

I believe the outer filter is 166-830-02-18.
I found that the inner 2 filter set might be 166-830-03-18. This is superseded by 166-830-72-01.

However, the -72-01 part number says its NOT for cars with the P21 package.

Confused as to what the inner filter part number should be!
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Old Jan 1, 2020 | 06:25 AM
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From: Dhahran, KSA
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Originally Posted by senexus
I have a 2017 GLS 550 with the P21 Air Ionization Package. Does anyone know the proper part numbers for the cabin air filters?

I believe the outer filter is 166-830-02-18.
I found that the inner 2 filter set might be 166-830-03-18. This is superseded by 166-830-72-01.

However, the -72-01 part number says its NOT for cars with the P21 package.

Confused as to what the inner filter part number should be!
Here you go:


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Old Apr 30, 2020 | 06:03 PM
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ml350 bluetec
Take a look my video. Takes 5 minutes to replace.
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Old May 1, 2020 | 05:00 AM
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Replacing the cabin air filters depends on what Automatic Air Conditioning code you have.
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