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W211 HID not working

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by mollymac, Nov 5, 2012.

  1. mollymac

    mollymac New Member

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    Reigate
    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Hi

    I have a RHD ( UK based) 2006 E320 CDI sport with what I assume are factory-fit HID Headlamps. DS1 35w Phillips Bulb and Ballasts

    The drivers side dipped headlamp is off permanently. I have swapped the bulb and base unit ( I believe this is referred to as the ballast) with the working side but that still doesnt work so I have eliminated the bulb and base unit. I have tried locating the fuse but it doesnt show on the MB Fuse diagram. I then assumed the fuse would be located in the engine compartment fuse box ( as MB do not show that in their fuse chart) but all those fuses are Ok.

    Also the ballast unit on the non-working side does not locate within the headlamp unit with a solid twist and click as with the other side

    Can anyone help ?. Just so you know I am not that technical

    Thanks in advance
    Paul McG
    Molly Mac is online now Report Post Edit/Delete Message
     
  2. television

    television Always remembered RIP

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    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    This could be the ECU control that has failed
     
  3. OP
    mollymac

    mollymac New Member

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    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Many thanks

    Would you happen to know where the ECU control is located and is it repairable
     
  4. television

    television Always remembered RIP

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    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    12 A 002 820 23 26 .CONTROL UNIT
    XENON CONTROL UNIT, LEFT [006], [007]
    Code: 614/618/615/616
    001
    12 A 211 870 88 26 .CONTROL UNIT
    XENON
    Replaced_By: A 211 870 90 26


    It could have one of these numbers, it could be in the headlamp or just under it if you follow the wires. these are very cheap on Ebay

    [​IMG]
     
  5. Troon

    Troon Active Senior Members

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    Your Mercedes:
    A big one
    The fuses covering the lamps are in the engine bay fuse box but all relevant fuses cover both sides.
     
  6. OP
    mollymac

    mollymac New Member

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    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Many thanks

    Valuable advice as many other non-MB HID systems seem to infer a fuse for each headlamp
     
  7. OP
    mollymac

    mollymac New Member

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    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Thank you very much for this. I will use my very limited Motor DIY skills and see if this cures my problem
     
  8. bigasotonuk

    bigasotonuk Senior Member

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    Your Mercedes:
    C43/55 AMG 1999 / C230K 1997
    Hi,
    As your ballast does not locate with a solid click/twist I would try the units from the duff side in the good side just to be sure where the fault lies, if then it doesn,t work the fault should lie in the ignitor box, which on other MB's is,nt replaceable as it comes as part of the headlight assembly and is located inside the headlight. Though not sure of the set up on the 211.
    If you need any Xenon parts for it take a look at this web site and drop them a mail of your requirements,
    http://www.oemxenonpart.com/OEM_Xenon_Part.htm
     
  9. OP
    mollymac

    mollymac New Member

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    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Many thanks Andy. I think this most likely the problem but I think a headlamp replacement is beyond my DIY skills. Looks like the MB dealer beckons

    Cheers
    Paul
     
  10. television

    television Always remembered RIP

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    If you need to remove the headlamp the bumper has to come off, I would avoid MB on this for they will just fit a new headlamp at £1k plus fitting
     
  11. Naraic

    Naraic Moderator

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    Strange how a bill of £1k suddenly makes diy so appealing.
     
  12. television

    television Always remembered RIP

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    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    I am not sure of that price but it could be correct
     
  13. OP
    mollymac

    mollymac New Member

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    Your Mercedes:
    W211 /2006/ E320 CDI Sport
    Many thanks for anll your advice. It transpired to be a weather-beaten ECU unit ( as Television had stated)/ I used a very efficient mobile Mercedes service, Mercanix, that came the next day and fitted a refurb unit for 150.00.
     

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