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E270 Heater not working

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by taswain, May 22, 2013.

  1. taswain

    taswain New Member

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    Joined:
    May 22, 2013
    Location:
    Cambridge, UK
    Your Mercedes:
    S320 W220 CDi (2002)
    Just bought an E270 Avantgarde (2002). Very happy BUT today tried to get hot air and no joy. Looking at previous threads it appeears to be a common problem on the W211 anda advice is to give it a firm tap on the auto valve (?) which is a bit of a pig to get to on the RHD models like mone. My question is what does this look like? May be abvious to you old hands but this is my first Merc so want to be sure i am tappingthe right bit!

    This does seem likely as a culprit as I bought it from a small independent dealer and it has probably been sitting around for a while.

    Any tips greatly appreciated.
     
  2. OP
    taswain

    taswain New Member

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    Joined:
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    Location:
    Cambridge, UK
    Your Mercedes:
    S320 W220 CDi (2002)
    Apologies - just realised this is in the wrong place. Have re-posted in the correct forum now.
     
  3. WG M-B

    WG M-B Senior Member Authorised Forum Supporter

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    Joined:
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    Location:
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    Your Mercedes:
    C63 Wagon in black
    It is a small plastic unit with several hose out puts and a plug connection located under the master cylinder. Try giving it a tap to see if it comes back to life!
     
  4. OP
    taswain

    taswain New Member

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    Joined:
    May 22, 2013
    Location:
    Cambridge, UK
    Your Mercedes:
    S320 W220 CDi (2002)
    Jeez - looked under the bonnet - not a clue. Sorry, I'm in IT, not motors....

    Does anyone have a photo or other clue as to how to identify? I also assume I need the engine running and heater on before I do this so I can see if it fires up?

    Thanks,
     

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