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2010 Mercedes-Benz GL550 Question: Transmission may not shift into Drive it remains in P position , please help me



RALALA, Garnet Valley, PA, August 14, 2013, 19:51

how to test if transmission control modulE is failed
how to replace it?
how much is it?

2 Answers
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  • Answer #1

    August 15, 2013, 04:51

    Valve Body/Conductor Plate Recall on your gl550 read the TSB below

    Date: April 29, 2011
    Order No.: S-B-27.00/120a
    Supersedes: S-B-27.00/120
    Group: 27
    Revision History
    Revision Date Purpose
    a 4/29/11 Clarification on Title and Parts order processing process
    - 4/8/11 Initial issue
    SUBJECT: All Models Equipped with 722.9 NAG2 (7G-Tronic) Transmission
    All Warrantable Model Years
    Diagnostic Verification for Valve Body/Conductor Plate Replacement
    Mercedes-Benz USA, LLC will begin Diagnostic Verification for 722.9 NAG2 Transmission Valve
    Body/Conductor Plate replacements starting on Monday, April 18, 2011. MBUSA has posted a Diagnostic
    Verification form for transmission replacements which can be found on: NetStar Æ Service Æ STAR
    TekInfo ÆDiagnostic Verification Proj. Æ NAG2 Valve Body/Conductor Plate
    Under this program, replacement of the Model Year 2004 through present Model Year 722.9 (NAG2)
    Transmission Valve Body/Conductor Plate will require verification that a replacement is necessary prior to
    replacement in accordance with the program terms summarized below.
    x The technician shall conduct an accurate assessment and complete documentation of the problem
    by submitting a Diagnostioc verification request through NetStar Æ Service Æ STAR TekInfo
    ÆDignostic Verification Proj. Æ NAG2 Valve Body/Conductor Plate.
    x Upon completion of the form, click on the ‘submit’ button to send the form to Dealer Technical
    Support(DTS). A Diagnostic Verfication case number will be displayed upon submission. Supporting
    documentation (e.g. Short Test, Control Unit Log, Freeze Frame Data & pictures of damaged parts
    where appropriate) must then be sent to diag-ver-valvebody@mbusa.com with the case number in
    the subject line as a reference. Once the form and supporting documentation are received, the case

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  • Answer #2

    Greg's Orange Auto (15216 Answers) , Orange, CA - (714) 361-9386
    globalhelper August 15, 2013, 09:12

    posss under warranty at dealer,or get a free est from aamco then shop prices

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