[w140nz]

If you blower is not blowing as it should and you find yourself increasing fan speed to get air out, it is trying to tell you something. unless you are one of the few that set your climate control on auto and let it decide when it wants to blow air and compute other things when you just want air in your face. I have given up trying to understand it but love the self diagnosis mode where it tells you all the sensor readings and temp.. it is pretty cool. quite handy when you want to know if re-gassing the ac is around the corner. I wish Mercedes extended this to a obd scan for rest of the vehicle..

okay back to earth

a quick inspection with three screws off the top panel will reveal the condition of your filter, It might be shocking if you haven't seen it before or know of its existence. I thought my blower might be needing a blower motor regulator and bought one off ebay.

under the bonnet at the top end you find three screws that hold down the vent and drain around the wiper. you don't have to remove anything else. once the screws are off a little wiggle and the panel lifts off revealing the filter on the right. see pic

my filter was pretty bad and there was an accumulation of dead leaves and debries..im not sure parking under a tree for shade is a good thing after all.

you will notice that this panel has a internal cavity and can be accessed by removing Wait almost 20 little screws ( I didn't count as I spent the time swearing trying to remove and replacing them afterward. I have never felt a screw overkill in any of my other jobs than this one, especially when you are leaning over the engine and breaking you back. considering you are breathing air that passes through this cavity it pays to clean it..

you could actually take this piece out of the car by detaching the vacuum house attached to the actuator but then we all know not to interfere with these hoses if they are not broken...you will never know where the hose will crack ...the best Mercedes vacuum technology tip !!!

Remove the filter and you will find the blower motor underneath and the regulator attached at the top. mine had a near new regulator and a sign it was OEM and done not long ago ..i tested the motor and it worked fine so my ebay part was kept for future

put everything back and test climate control and you will notice that It makes all the usual asthma noises but blows out air much stronger at low speed settings.

Now this filter at the dealer cost me 149 plus tax and you can find it cheaper on ebay, two types one is a charcoal filter grey black in colour the other is cheaper in white... the darker onc is meant to filter more stuff.

The second cabin filter for circulating air is located in the front passenger footwell and requires you to perform a spine twist to get to it. if you have a back injury I suggest you get some one to do it for you..

Two screw type clips hold the panel and when the clips are released you just pull the panel out and you will find the filter attached in the middle, its a easy swap and cheaper to source off ebay than the dealer. mine cost 85 plus tax

With both of the climate control filters done and my blower working at full capacity the job is done


Vic

 

[Joe-V12]

Parking under trees is a myth. Bird crap, leaves and at times falling branches, no thanks.

For cars with a charcoal filter, need to remove A pillar covers to remove windsheild wipers to remove the plastic drainage tray to gain access to the charcoal filter portal.

 

[The donut man]

I used a charcoal impregnated fresh air filter since my model does not have the charcoal feature. The core housing did have a foam sound baffle when I pulled the dash. Kinda easy compared to 123s and 124s.


I want to turn my head upside down when you guys post right hand drive pictures))))

 

[Joe-V12]

Yes I'd love to source one or two of the charcoal impregnated fresh air filters, but, I can not work out what the part number is for RHD vehicles. :crying

 

[Joe-V12]

BTW a couple of years back I bought a 1998 VW Passat (similar to Audi A4) with full service books signed off by VW mechanics. I bought it in a rush, how bad could it be? It had leaves and debris hidden from view like the above pics, but these cars have the battery in there as well in the center under the windsheild. Battery acid mixed with rotting leaves corroded a 4 inch hole straight through the firewall cavity.

 

[The donut man]

Corteco makes a right hand drive charcoal filter. Part number 21653011. This link may crash...and it does! You will have to work through it. I punched in a s600 w140 with British language selection.

Trade number is CC1042.


http://outcat-cs.tecdoc.net/ows/en/63D24F04A762C7626A36A2BE7015ADB4.ows_cs420.srv?view=VIndexFramesetJsp&RedirectResolution=false

 

[Joe-V12]

Excellent. Thanks. Yeah that link doesn't work but the Corteco part number is enough info for me. My previous attempts to look at UK and Japan websites failed.