Programming of control units - AR54.21-P-0014Z

	Program with Flash Support File (support through User Help Desk)
1	Connect diagnostic system, start "Xentry Diagnostics" (XD) and select vehicle model 251. Program with Flash Support File	During the entire work procedure a sufficiently large voltage supply must be provided for the vehicle's on-board electrical system. Otherwise any undervoltage may damage the control units. Communication with control unit is being established.
2	Determine the part number of the control unit with the aid of the current parts catalog	Only required if data cannot be read out of the control unit.
3	Select the "Adaptations" menu item in the control unit	To program the control unit select the User Help Desk Support" menu item.
4	Select Query control unit software	For support through the "User Help Desk".
5	Save query data.	Save the "Flash Support File" on an external data medium.
6	Send query data to "User Help Desk"	Send the "Flash Support File" through the known channels to the "User Help Desk".
7	Determine control unit software	The control unit software is determined by the "User Help Desk". The "User Help Desk" creates a response file and makes it available.
8	Load response data and program control unit	If necessary, unpack the data made available by the "User Help Desk" and copy them to an external data medium. Read in the "Flash Support File" ("Load response file") and follow the instructions. To switch control units into the write mode for control unit programming, an unlocking code (key) is required for the respective control unit. If the regular "Xentry flash" online procedures are used, this is automated and queried without user intervention at the central systems. In the fallback solution using the "Flash Support File", the user is prompted by XD to ask for the activation code by phone from the "Star Diagnosis User Help Desk". A detailed process description can be found in the INFO information system.
9	Contact "User Help Desk Star Diagnosis"	Only if the control unit does not communicate with the XD or the problem cannot be eliminated using the current XD-DVD. Have the flash/code support package, the control unit version and, where applicable, the repair job documentation close to hand.
10	Forward flash/code support package, control unit version and, where applicable, the repair job documentation to the "Start Diagnosis User Help Desk"	This information is needed for problem solving. This information is used to create the Flash Support File. The "Star Diagnosis User Help Desk" sends the Flash Support File electronically to the workshop.
11	Perform redocumentation procedure in Vehicle Documentation (VeDoc) in VeDoc screen	Only after successfully programming the control unit.
12	Perform software calibration number (SCN) coding for control units	Only when required, refer to XD. AR54.21-P-0015X
13	Run teach-in procedures	Only when required, refer to XD.
14	Read out fault memory, erase if necessary
15	Disconnect diagnostic system	Program with Flash Support File