Login Procedure (Function 11)
Login Procedure (Function 11)
In order to perform the Login procedure, a coded "secret number" must first be determined in conjunction with the 14 digit identification number of the Engine Control Module (ECM) or anti-theft immobilizer.
ECM and immobilizer identification numbers are read upon initiation of On Board Diagnostic (OBD).
Effective calender date 03.11.2002, the immobilizer secret number is encoded for increased security. The encoded number is now 7-digits and is referred to as a "PIN" ("Personal Identification Number").
All models with anti-theft immobilizer are affected, regardless of generation.
The process to obtain the 7-digit PIN remains the same as with the 4-digit "secret number" previously used - that is: request via the "Warranty Information Network" (WIN). However, WIN Administration now requires additional information from both the vehicle and Dealer in order to to generate the 7-digit PIN.
The PIN is only valid on the day it is requested. Thereafter, a new PIN is required.
The 7-digit PIN can only be processed and input using either the VAS 5051 or VAS 5052 with basis CD version 3.10 and higher. VAG 1551/1552 Scan Tools are unable to process or input this number.
A correct Importer/Dealer number must reside in the VAS 5051/5052 in order to request a PIN.
The requested PIN is intended for internal use only, is worthless to other Dealers and must not be shared with the customer.
CAUTION:
- All Dealership VAS 5051 and VAS 5052 testers in service MUST be programmed with the correct Importer/Dealer number, as well as correct date and time.
- Adaptation functions of the anti-theft immobilizer are not possible with incorrect
Login Procedure, instrument cluster
Display on VAS 5051:
- Press selection -1- of vehicle system "17 - instrument cluster"
- Wait until the next indication appears on display.
Display on VAS 5051:
1 - Control module identification of the instrument cluster
2 - Control module identification of immobilizer
- Press -> button
Display on VAS 5051:
- In selection -1-, select the diagnostic function "11 - Login-procedure"
Display on VAS 5051:
1 - Enter code word Max. input value = 65535
- Enter previously determined 7-digit PIN (of instrument cluster) in button field -2-.
- Press -Q- button to confirm input.
NOTE:
- After the third incorrect input of the 7-digit PIN, the control module for anti-theft immobilizer or Engine Control Module (ECM) will be locked.
- It is not possible to make another attempt for 10 minutes. During this time, the ignition must remain constantly switched on. On Board Diagnostic (OBD) must be exited using the "End Output" function 06. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.
Display on VAS 5051:
NOTE: Once the login procedure has been successfully completed, the warning lamp will light constantly and the immobilizer will be switched free:
- as long as the engine is running and the ignition key remains inserted,
- for 45 minutes, as long as the ignition key remains inserted (engine not running),
- for 5 minutes, if ignition key is removed.
NOTE:
If indication -1- appears in display field: "Function unknown or cannot be performed at this moment", the 7-digit PIN was entered incorrectly (e.g. incorrect secret code)
Login Procedure, Engine Control Module (ECM)
Display on VAS 5051:
- Press selection -1- of vehicle system "01 - Engine electronics"
- Wait until the next indication appears on display.
Display on VAS 5051:
1 - Control module identification of Engine Control Module (ECM).
2 - Control module identification of immobilizer
- Press -> button
Display on VAS 5051:
- In selection -1-, select the diagnostic function "11 - Login-procedure"
Display on VAS 5051:
1 - Enter code word Max. input value = 65535
- Enter 7-digit PIN (of Engine Control Module (ECM)) in button field -2-.
- Press -Q- button to confirm input.
NOTE:
- After the third incorrect input of the 7-digit PIN, the control module for anti-theft immobilizer or Engine Control Module (ECM) will be locked.
- It is not possible to make another attempt for 10 minutes. During this time, the ignition must remain constantly switched on. On Board Diagnostic (OBD) must be exited using the "End Output" function 06. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.
Display on VAS 5051:
The Engine Control Module (ECM) is now switched free.
NOTE:
If indication -1- appears in display field: "Function unknown or cannot be performed at this moment", the 7-digit PIN was entered incorrectly (e.g. incorrect secret code)
NOTE:
- Data is exchanged between individual control modules by means of a "bus" system.
- "CAN-Bus" is used to describe a system that transports and distributes data.
- The wires between the control modules that are used to transfer the data are known as signal wires.
- These signal wires are used for serial transmission of data, i.e. data is sent to each of the connected control modules in turn.