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Its back the dreaded light

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by gh3382, Jan 7, 2013.

  1. gh3382

    gh3382 Senior Member

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    Joined:
    May 5, 2012
    Location:
    North East England
    Your Mercedes:
    W164 ML350
    My engine management light is back on . see this post

    http://forums.mercedesclub.org.uk/showthread.php?t=110481

    It si once again getting towards the bottom of the fuel tank and I am wondering if it could be dirt or something that is doing it.

    I will fill it again tomorrow and see what happens

    gh3382
     
  2. andy@pcd-ltd

    andy@pcd-ltd Guest

    Did you get the fault codes read from the last time the light came on.
     
  3. television

    television Always remembered RIP

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    Joined:
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    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    It does not take much to contaminate the 02 sensor, it may need a STAR test after all
     
  4. OP
    gh3382

    gh3382 Senior Member

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    Joined:
    May 5, 2012
    Location:
    North East England
    Your Mercedes:
    W164 ML350
    I think it will be a star test

    I was happy to leave it before but rather be safe than sorry.

    Think I will be dealing with it today.

    gh3382
     
  5. OP
    gh3382

    gh3382 Senior Member

    Messages:
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    Joined:
    May 5, 2012
    Location:
    North East England
    Your Mercedes:
    W164 ML350
    The light came on again so I took it in for diagnostic.

    It showed the secondary actuating air injection pump was not working and the fault lay with a blown relay which they fixed. Should it happen again they will replace the pump.

    I have extended warranty who are going to pay £63 of the £109 bill

    gh3382
     
  6. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    310
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Pleased all done and nothing there that could do any harm :D
     

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