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The AC and heater on our 05 CLK320 smells very bad. It smells musty like the car has water under the dash in the AC. It only smells when you first turn it on after it has been sitting, after about 2 min the smell goes goes away. Could it be AC drains or some thing?

Change your cabin filter..........IT TOO OLD !!! :D Filter is on top of the battery inside the engine bay.:thumbsup:
 

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2006 CLK 350
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Discussion Starter · #22 ·
Do you have the carbon filter by-pass switch on your center dash panel? If so, then you should also change the carbon filter... you can buy mine !!! :D
 

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1979 280CE
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What does the switch look like?

So this filter will cause the awful smell? It smells like the car sat with the windows down in a junkyard for a year.
 

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2006 CLK 350
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Discussion Starter · #24 ·
The switch is obvious... it is a push button switch with a red LED to indicate that when pushed that the air flow is passing through the charcoal filter, otherwise with the LED off the filter is by-passed.

Looks like a skinny rectangle in the Vertical position with an arrows flowing through it... ie ... -> [] ->

Do you have it? :rolleyes:
 

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1979 280CE
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No, I don't have that switch?
 

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2006 CLK 350
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Discussion Starter · #26 ·
Lucky you... don't need a carbon filter then... but just enjoy the smell of diesel soot in the morning! :D
 

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1979 280CE
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So, I don't need any type of filter now?

BTW, did you find those manuals?
 

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Discussion Starter · #28 ·
All you need is the regular dust filter... but you have no carbon filter.

Sorry not yet... still have to go somewhere to look for it... so hang in there.

Say, on that 0.13 " feeler gage you've ordered ... that can be made up with a .012 + .001 = .013" !!! If you have the old style multiple fan-out feeler gage, that will work!

:D
 

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1979 280CE
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The filter is located above the battery, correct?

The intake is .10mm and exhaust is .25mm, I couldn't find .10mm so I ordered them both from the dealer at 15.75 a piece.
 

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2006 CLK 350
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Discussion Starter · #30 ·
Yes, for my year 06CLK350, it's above the battery held down by three flip latches. Go to Rojoimparts on eBay and get it for 10 bucks!!! :D

It's a little tricky getting it out of the holder and back in, but you'll figure it out!
 

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1979 280CE
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I took it to the dealer and they replaced the filter and cleaned everything out under the dash and the smell was gone. A week later im back to square one, it smells very bad the first min. I turn the AC on, then it goes away.
 

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1979 280CE
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^^They cleaned it all out a month ago and the smell came back.
 

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Wow that answear my question about my A/C stink for a min or so while I turn on the A/C. I do have the charcoal button on the A/C . Can I buy the filter from any random auto part store? Or do I have to get it from MB only?
 

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2004 CLK 240 Coupe
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Re: bad smell from a/c vents

I'm sure I have read that you can get a mold growing inside there, depending on the humidity in your region.

I have seen a canned aerosol product that you spray into the a/c inlets which claims to kill this bacteria. Check out your local parts store.
 

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1979 280CE
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do you have any idea what the product is called?
 

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2006 CLK 350
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Discussion Starter · #38 ·
Lordy!!! This thread has taken on a life of it's own !!!

Well.. Well...!!! I am impressed to see this thread still kickin' around with good many replies and thousands of lookie-lookers!!!

To answer the smelly duckworks problem... do a search on the forums... I recall it being discuss a lot over in the E-class forums.

For sure you must change the air and cabin carbon filters (if you have it) to stop most smells. The cabin carbon (charcoal) filter is very expensive to replace and thus over looked, but it does need to be replaced.

I also recall reading something about a small coolant leak that also caused that smelly problem. So if you find your coolant level dropping slowly over a long period of time and cannot see anything on the garage floor... then it's probably leaking in your passenger compartment or there's about.

I think the sprays are just de-oderizers and a temporary fix... as the smell will come back.

If it is mold or mildew, you have to stop the leak or water buildup... check the air conditioning drip tube for proper drainage... clean or treat the mildew/mold with a strong industrial anti-fungal spray chemcial, dry everything with heat and blower fans, then hope for the best.

Good Luck... :thumbsup:
 

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1979 280CE
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I don't are how long the AC has been on there is never a puddle of condensation from the AC, the 79 280 always has alot of water after using the AC. Where is the drain tube, is there one? It seems like all the water is staying under the dash.
 

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2006 CLK 350
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Discussion Starter · #40 ·
Where is the AC condensation drain tube??? Anyone knows???

Good question !!! Sorry I don't know... but might be your problem!!! Do a search on the forum for the drain tube.. I recall that they do get plug up sometimes which would cause a puddle at the bottom of the evaporator.

I also recall that was the cause of the Legionaire disease at some Hotels a long time ago...

You should start a new thread about this problem or add to the best one you find because this problem is a little off topic; and you'll probably get more responses and answers.

Good Luck finding the drain tube... :)
 
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