PTM Transfer Gear Servo Motor Update
Display in instrument cluster: "All-wheel drive system defective" - For fault code 2033, 2039, 2041, or 2042 in transfer gear control unit.
When the transfer unit is diagnosed as being defective, this parts kit updates to the latest version as recommended by Porsche in a technical service manual.
In effected vehicles, the servo motor overheats while in "Low Range" driving program after driving long distances due to a fault in the transfer gear control unit. To complete this update, a new control unit for the center differential lock and new servo motor are required.
This upgrade is for 2003 to 2009 Cayenne, Cayenne S, Cayenne GTS, Cayenne Turbo, and Cayenne Turbo S models.