Audi Workshop Service and Repair Manuals

Reading measured value block

Sequence of operations –  Start immobilizer self-diagnosis → Chapter. Display on -VAS 5051B-: –  From list -1-, select function “08 - Reading measured value block”.

Display on -VAS 5051B-: 1 -  Enter display group –  Use keypad -2- to enter the desired “display group number” → Anchor and confirm the entry by touching the Q key.

Display on -VAS 5051B-: 1 -  Display zones 1 ... 4. If a display zone is not assigned, there is no display on this line. 2 -  The display group selected is shown here 3 -  Touching these keys permits switching to a different display group. 4 -  Touching these keys permits switching to a different function (e.g. from “Reading measured value block” to “Basic setting” and vice versa). –  Terminate function “08 - Reading measured value block” by touching ← key.

List of display groups

Display group 022
Display zones		Explanatory notes
1		Starting authorised
	…	l  1 = yes l  0 = no, i.e. vehicle key not/incorrectly matched or engine control unit incorrectly encoded/defective
2		Engine control unit responds
	…	l  1 = yes (whether engine control unit is authorised or not) l  0 = no, i.e. either engine control unit is in “Run-on mode” or there is a fault in the engine control unit or wiring Depending on engine control unit, the display is “0 = Engine control unit responds No” for 10 ... 30 seconds after switching off the engine and ignition, i.e. the engine control unit has been released and there are no faults. Start self-diagnosis again to be certain → Chapter.
3		Key status OK
	…	l  1 = Correct transponder fixed code read (whether authorised or not) l  0 = Fault, i.e. key or coil defective
4		Number of matched keys
	…	l  Max. 8 keys

Display group 023
Display zones		Explanatory notes
1		Variable code authorised
	…	l  1 = yes l  0 = no, i.e. variable code not authorised (arithmetic rule for variable code in key is not the same as that in the dash panel insert).
2		Key status
	…	l  1 = Transponder in key is interlocked, i.e. arithmetic rule in key can no longer be overwritten. Key can no longer be matched to a different immobilizer system. l  0 = Transponder in key not interlocked, i.e. transponder has not yet been matched to dash panel insert
3		Fixed code authorised
	…	l  1 = yes l  0 = no, i.e. transponder fixed code of key not authorised
4		Immobilizer status
	…	l  4: Service as-delivered condition (replacement dash panel insert) l  5: Service matching of dash panel insert l  6: Keys from dash panel insert matched; normal status

Display group 024
Display zones		Explanatory notes
1		Dash panel insert disable time
	…	l  0 … 255 minutes This value indicates the time after which login can again be performed on the dash panel insert. If the PIN is entered incorrectly 3 times, the control unit is disabled for 10 minutes 1).
2		Engine control unit disable time
	…	l  0 … 255 minutes This value indicates the time after which the adaption function can again be implemented by the engine control unit. If the PIN is entered incorrectly three times on adaption, the control unit is disabled for 10 minutes 1).
3		Emergency release disable time - function can no longer be implemented
4		Transponder recognition disable time
	…	l  0 … 10 minutes This value indicates the time after which transponder recognition is again possible. This disable function is activated if the transponder of an unauthorised key has been read out 20 times in succession.
l  1) The waiting time after every 3 further incorrect entries is doubled in each case up to a maximum of 255 minutes.

Display group 025
Display zones		Explanatory notes
1		CAN communication with engine control unit
	…	l  0 = no, i.e. no CAN communication between immobilizer control unit and engine control unit l  1 = yes, i.e. dash panel insert has recognised “immobilizer III” from engine control unit l  2 = yes, i.e. dash panel insert has recognised “immobilizer II” from engine control unit
2		Not used
3		Not used
4		Not used