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Porsche 911, Coolant Bleed

7 Views 0 Replies Create Time: 2026-01-15 05:42:21


  •   Level 1   
    (5) points
    Ian Wells
    2026-01-15 05:42:21
    Has anyone managed to sucessfully run the coolant bleed command / routine on a 991.1?

    I'm using a MaxiCOM MK808Z that allows me to invoke the command but it always errors with: Negative Responses Key:11

    The frunk is open and the engine is running as per instructions on the MK808Z.

    I have also tried disconnecting the electrical connector by the fans which I think the Porsche service manual says needs to be done.

    Thanks, Ian


    Tags: Porsche , 911 , coolant_bleed

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