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TCM Issue "Drive Authorization not Enabled"

4 Views 0 Replies Create Time: 2026-01-16 00:21:35


  •   Level 1   
    (5) points
    Mark Thrasher
    2026-01-16 00:21:35
    Hello All,
     I have installed a new valve body assembly in a 2007 R350 (w251 Chassis) 722.9 transmission.  Conductor plate has been programmed and coded.  Everything appears to be correct...... however I can't get a "yes" in the drive authorization in the TCM.  Drive Authorization is showing "Yes" in the ECU.  Car starts fine..... Transmission selector has been taught properly..... can here the ISM actuating when Drive, Neutral or Reverse is selected..... but, the car won't move.  Hence....no "drive Authorization."  Have been on the phone a few times with Autel Support.... done the Data Log submission to the Engineers..... but... nothing is fixing the issue.  Just wondering if anyone has any insight?
    Thanks
    Mark
     
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