W210 ECU Soft Reset/Memory Dump

Discussion in 'Other Cars' started by SilverStar, Feb 17, 2015.

  1. SilverStar

    SilverStar New Member

    Joined:
    Jun 22, 2013
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    Location:
    Edmonton
    This procedure will clear all error codes and reset the ECU back to factory settings. It must be done after a battery disconnect.

    1. With the doors closed and the wheels at dead center, start the car.

    2. Turn the wheels all the way to the left, then all the way to the right, then back to dead center.

    3. Now shut the car off and remove the key, and do not do ANYTHING for at least 2 min.

    4. Start the car and confirm that there are no errors.

    *Any persisting/current errors will resurface withing a day or two, if not immediately.
     
    Last edited: Feb 17, 2015
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  2. RyanV

    RyanV Member

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    Does do nothing mean you can't open the door or anything either? Just sit there and wait?
     
  3. IanB

    IanB New Member

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    Winnipeg, MB
    These DIY must-have's should all be stickyed (stickied?), thanks for sharing!
     
  4. SilverStar

    SilverStar New Member

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    Jun 22, 2013
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    Location:
    Edmonton
    Yes, sit and wait. Anything that activates the electrical system will void the process.