W208 Heated Rear Screen

Discussion in 'Electronics' started by steam_biker, Sep 17, 2011.

  1. steam_biker

    steam_biker Member

    Messages:
    51
    Joined:
    Feb 20, 2011
    Location:
    Cumbernauld
    Car:
    W211 E320 sport Yamaha FZR 600 Genesis 1991
    Has anyone else had probs with a HRW? My radio has perfect reception but my screen will not clear. As there is no aerial on the car I reckon the element acts as the radio aerial. Am I right in thinking the screen is ok as the radio works?
     
  2. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    The HRW and aerial lines are separate to each other.
     
    1 person likes this.
  3. OP
    OP
    steam_biker

    steam_biker Member

    Messages:
    51
    Joined:
    Feb 20, 2011
    Location:
    Cumbernauld
    Car:
    W211 E320 sport Yamaha FZR 600 Genesis 1991
    W 208 CLK 230 Heated Rear Window

    My heated rear window has never worked since I bought my car four years ago. An independent told me it was the rear screen needed replacement. I priced it at around £500 and couldn't afford it.
    A few months ago some lowlife put a stone through it,had it replaced,but still not working! The orange light in the switch works when it is switched on, it goes out after 15 to 20 minutes as it should but the screen does not clear. As you will know, a workshop manual is not available except the MB dealers online version which I find difficult to work out.
    Any ideas anyone:fail
     
  4. lexman8

    lexman8 Active Member

    Messages:
    286
    Joined:
    Mar 6, 2014
    Location:
    Yorkshire, French Alps & Quahog
    Car:
    CL500
    Assuming it's not a wiring problem, the HRW is operated via a fuse and relay, either of which might have failed. The fuse will be something like 40 amps.

    The orange light is switched on by the SAM so can still light up even if the fuse or relay have failed. Unfortunately I don't know where these are located on a W208.
     

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