theinmoe

From Mann website.
Link

tanktube67

Thanks

Carsy

Much appreciated & useful. Post some more when you can.

RickP330

Yes,
thanks, these posts are great.
RickP

mb_horseshoe

Sweet. I was thinking about this the other day.

Does anybody else notice that the "recirculate button" always refreshes to "OFF". Specifically, when I hit the recirculate button, then turn off the air, and turn it back on, the recirc is off.

Thought to myself "the cabin filter will probably wear faster than my other cars."

Anybody know the part number for the OEM cabin filter?

RLE

Since the cabin air filter in my W203 would get filthy after about 12 months, I thought I would take a look at the C300's filter a few weeks ago. After I found it (not easy) it turned out to be far from dirty and I reinstalled it. The filter material is completely different from the W203s and won't need changing for some time yet. One difference is that the W203s filter is mounted over the battery whereas the W204's air intake is below the right wiper arm where the air may be cleaner.

To access the filter, you must remove the panel forward of the glove box (three Torx bolts) which in my car was pinned in by the lower side panel which comes out after peeling off the door gasket. Far from user friendly but since the filter won't have to be changed nearly as often, I can live with it.

I think the filter is changed at the B service.

hmc

How many miles have you on your car?

RLE

The car has 7800 miles but you must understand that miles traveled is not the only indicator for change. Rather, it is the hours the system has been inhaling outside air plus of course how clean is that air.

My car will be one year tomorrow since delivery and has not been on any long trips but has been driven around town nearly every day and our air is dusty in certain areas.

hmc

Sounds like you could go 30K before change ?
Understand what you said but your case seems to be "severe condition" already.

RLE

When I said dusty, I don't mean visible dust but rather generally dirty city atmosphere.

I think the filter might last 20K miles or so but I'll look at it again when the mood strikes me. The part number is on the filter which I failed to write down but I do know I will not pay dealer prices for it or the engine air filters which I found needed changing at about 16-20K miles.

nguyenmd350slk

xcellent post. Thank you.

Nuru

Thanks for the link.

mac911

Thanks. That actually makes it look short and easy. Thanks.

FrankW

lol...it's the same stupid *** filter I just changed for my sister's W208.

JimPap

I can't find it in my 2008 C300 maintenance manaual and thought I'd ask it here.

According to the first post in this thread, there's a filter under the passenger side dash.

There is also a filter in the engine compartment right next to the firewall.

This is a U.S. model and that might cause the design to be different.

Is one considered the "combination filter" while the other is the "cabin air filter?"

Without taking my dash apart, could it be that if you have the filter in the engine compartment there wouldn't be one under the dash?

vic viper

There is only one cabin filter in the 204, its called A212 830 00 18 and is placed under the glovebox as in the instructions from Mann.

The air intake box in the engine bay is only a water trap air intake, no filter there.

JimPap

Vic

Sorry man, I must be losing it.

I was dead certain that there was a filter in that box and had to actually open it to convince myself that there wasn't one there.

Thanks for saving the day......again.

RLE

Illustrates how these things get lost. I posted over a year ago that the box over the battery is a water separator. Good thing it's easy to remove to find out there is no filter there.

robertboone

I installed both an engine and cabin air filter, now I have a check engine light and the no air is coming out of the vents. I hear the fan inside blower, but nothing is coming out. I reinstalled the engine filter making sure there are no leaks, but the CEL is still on. I think the dealer has to reset it, but I can't figure out why there is no air coming out of the vents. Help!

C300Sport

Regarding the CEL. Are you sure you didn't pop a hose/wire/connector off from somewhere around the engine cover?
If the cabin filter slid into place, I can't see why you wouldn't have air moving. Maybe remove and reistall again making sure the slides/clamps are sealing off the filter properly?

jctevere

I agree with c300sport. The CEL wouldn't remain on and deny air coming out if the problem is gone and it just needed to be cleared, there is something botched with the install, most likely in the engine bay. I doubt anything with the cabin air filter could cause this.

Double check all connections, and if your car is still under warranty - act stupid and bring it in. Just say, wtf is happening? lol

Have you tried pulling the CEL from the memory bank and finding out what it is? Any autozone, pep-boys or similar store would do this for free.

b06mbs

Do you know if there is a filter made for the european version of the c350? I just popped off the box and noticed the blower blades have a layer of dirt on them

RLE

I don't know why you would think a Euro version would differ from the rest of the world. They do not.

There is NO filter in the underhood water trap leading to the heater fan.

And by the way, I just looked up when I last changed the cabin filter and find that was 8/9/09 at 14711 miles. Now, fifteen months and 9100 miles later I am going to change it again because I'm getting too much dust inside, collecting below the instruments and on the wood around the shifter. I also see I paid the crazy price of $62.37 from the dealer (with my MBCA discount, yet) vs the eighteen bucks and change from autohausaz.com. I never use the term stealership but in this case, well..........

brandno7

I just did this last night and it was a royal pain in the a$$. The three screws come off easily enough, but it's much easier to remove the entire bottom panel to get to the cabin air filter than to simply 'pull it down'. However, getting the bottom panel out is very tricky, disconnect the two light sources and then wrangle it out of there.. I purchased the cabin air filter below from parts geek, but it was slightly larger than the space allowed, which meant I have to smush it down to make it fit. Pain in the a$$ nonetheless.

http://www.partsgeek.com/catalog/200...ir_filter.html

theinmoe

I bought mine from Autohausaz and it was OEM Mann filter and it fits good. Yes removing cover is difficult, there is a latch hooking to blower, need to push that latch from sqare hole under the cover.

http://www.autohausaz.com/search/pro...2008&cid=24@AC & Heat - Climate Control&gid=6832@Cabin Air Filter/Pollen Filter