1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

sl 350 heater

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by pez47, Nov 30, 2012.

  1. pez47

    pez47 New Member

    Messages:
    3
    Likes Received:
    0
    Joined:
    Nov 13, 2012
    Location:
    grimsby
    Your Mercedes:
    mercedes sl 350
    when i turn on the heater switch on this sl full the bars only light up half way then around 2 to 3 minutes it will come on full also the air con when switched on flashes a couple of times then goes off any suggestions please
     
  2. Fleetwood

    Fleetwood Senior Member

    Messages:
    163
    Likes Received:
    0
    Joined:
    Jun 20, 2012
    Location:
    Horsham, West Sussex
    Your Mercedes:
    2005. SL350
    Could possibly be water under the passenger carpet

    Open the bonnet and under the passenger bonnet grill is the heater box check to make sure there is no water sitting in there
     
  3. toby1

    toby1 Senior Member

    Messages:
    4,901
    Likes Received:
    170
    Joined:
    Mar 13, 2007
    Location:
    West Berkshire
    Your Mercedes:
    1998 CL420 C140
    I may be wrong but I think it does this by design to allow the engine time to begin to warm.

    IIRC there was thread on this very subject recently. Others will advise or you can search the forum yourself. Or the info may even be in your owner's manual.
     
  4. Fleetwood

    Fleetwood Senior Member

    Messages:
    163
    Likes Received:
    0
    Joined:
    Jun 20, 2012
    Location:
    Horsham, West Sussex
    Your Mercedes:
    2005. SL350
    I'm going out in my SL tonight so will try it and report back :)
     
  5. drmw

    drmw Moderator

    Messages:
    3,683
    Likes Received:
    112
    Joined:
    Nov 25, 2007
    Location:
    Yorkshire
    Your Mercedes:
    M6 Cab - prior to that, SL63 AMG, A-M V8 Vantage, SL55, SL500 and many more
    are you getting "consumer electrics offline" when you start? If so, it will prevent full power on several things including the fan & rear screen heater until the battery in the boot gets up to charge.
     
  6. WG M-B

    WG M-B Senior Member Authorised Forum Supporter

    Messages:
    3,105
    Likes Received:
    6
    Joined:
    Dec 5, 2010
    Location:
    North west london
    Your Mercedes:
    C63 Wagon in black
    I would imagine the fault to be caused by the heater circulation pump. This fault shows on star
     

Share This Page