Adaptation of vehicle keys: Procedure
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- Insert first key in ignition lock and switch on ignition.
- Initiate On Board Diagnostic (OBD) of immobilizer. See IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING .
- Perform login procedure for instrument cluster. See LOGIN PROCEDURE, INSTRUMENT CLUSTER .
NOTE:
Once the login procedure has been successfully completed, the warning lamp will light constantly and the immobilize will be switched free for a specific time:
Display on VAS 5051:
- In selection -1-, select the diagnostic function "10 - Adaptation".
Display on VAS 5051:
- Enter channel number Max. input value = 99
- Select function "21" in button field -2- for "Adaptation channel 21" and press Q button to confirm input.
Display on VAS 5051:
- 1 - Channel 21 read and test
- 2 - old number of keys
- 5 - The sliding bar is positioned on the current adaptation value, e.g. 2 The number of ignition keys which are adapted to the system will be displayed (e.g. 2)
NOTE:
If indication -1- appears in display field: "Function unknown or cannot be performed at the moment", repeat login-procedure and the adaptation.
- Enter 5-digit adaptation value. Insert zeros in front.
Example:
Desired input value: 4 keys (including the key which is inserted in the ignition switch; max. 8 are possible)
Keypad input: 00004
- Press -Q- button to confirm input.
Display on VAS 5051:
- 1 - Channel 21 save
- 2 - old number of keys
- 4 - original value 2 new value 4
- Confirm new adaptation value by pressing the "take over" button -3-.
NOTE:
No single key must require more than 30 seconds during adaptation, otherwise the warning lamp will blink with a frequency of 2 Hz and adaptation must be performed again in its entirety (login procedure and adaptation).
Display on VAS 5051:
- Channel 21 Value 4 stored
Warning lamp in instrument cluster goes out and key in ignition is now adapted.
- End function "10 - Adaptation" by pressing <-- button.
Display on VAS 5051:
- Select diagnostic function "06 - End Output" in selection -1-.
- Switch ignition off.
- Insert next key in ignition lock and switch on ignition. Warning lamp lights up when ignition is switched on and goes out after approx. one second. This key is also adapted now.
- Repeat procedure until all keys have been adapted. After the last key, the warning light will go out approx. 2 seconds after successful adaptation and a short confirmation signal will be given (0.5 seconds light off, 0.5 seconds light on, light off).
- During adaptation of vehicle keys, the fixed code of each key (transponder) is adapted to the immobilizer. Furthermore, the computational rule for the variable code is written into each key and locked. After that, keys can only be adapted for immobilizer III if they have the correct computational rule for the variable code (key had already been adapted to the system) or if they have not yet been locked (replacement part key). Adapted vehicle keys can not be used in conjunction with a different immobilizer system.
- Select "Check DTC Memory", function 02. If there are no DTCs stored, then the function "Adapting keys" has been completed successfully.
Adaptation of ignition keys is automatically terminated if:
- The number of keys to be adapted has been reached.
- The ignition is switched on using a key that is already adapted and remains switched on for more than one second (DTC stored).
- The allotted adaptation time of 30 seconds per key, after ignition is switched on, is exceeded (DTC stored).
- A DTC is stored during key adaptation.