W210 water coolant sensor

Discussion in 'Electronics' started by Stuart K, Sep 15, 2008.

  1. Stuart K

    Stuart K Active Member

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    Hi

    I have a '02 E220 CDI Estate, recently the 'check water coolant' warning has randomly come on (some times a mintue after I start, other times after 30 or so minutes)

    I hav checked the water levels and I keep a eye on the temperature and all appears to be fine. I'm guessing the senor has gone (this car has now done over 130K!). Question: Is this easy to replace myself (I'm not very machanically gifted)? Could any one give me some guidance?

    Many thanks


     
  2. recycled

    recycled Hardcore MB Enthusiast

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    Last edited: Sep 15, 2008
  3. nick mercedes

    nick mercedes MB Club Veteran

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    Possibly A2105450024 - £11.63 from your local MB parts dept, best check on your chassis number though.

    Easy enough to replace.
     
  4. OP
    OP
    Stuart K

    Stuart K Active Member

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    Mine has a expansion tank...

    Sorry for the slow uptake, but is the sensor a scew in? Where is it.. I'm trying to take a look at the diagram..

    Many thanks
     
  5. recycled

    recycled Hardcore MB Enthusiast

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    it is a screw in. There is a top with 2 wires sticking out that need to come off. the it is a press in and turn left, like a pin bulb type action. it should besta on top of your tank or on top of the rad, beside the opening to pour coolant in
     
  6. nick mercedes

    nick mercedes MB Club Veteran

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  7. recycled

    recycled Hardcore MB Enthusiast

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  8. nick mercedes

    nick mercedes MB Club Veteran

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    A W210 or a W211?
     
  9. Dieselman

    Dieselman Banned

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    Must be a W210 at that age.
     
  10. recycled

    recycled Hardcore MB Enthusiast

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  11. OP
    OP
    Stuart K

    Stuart K Active Member

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    It a W210..
     
  12. Diesel Benz

    Diesel Benz Hardcore MB Enthusiast

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    I have not followed when the Estate sales started but I've seen S211 cars with a 2002 build date. UK might be different though.
     
  13. OP
    OP
    Stuart K

    Stuart K Active Member

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    Yes, mine is the old model.. the W210. I thought the W211 came out in 2003. Any way, the sensor I need to replace is on the bottom of the tank I top up?
     

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