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Convenience electronics
Diagnosis
Most diagnosis procedures for the new Navigation Plus system can be performed using the diagnostic tester.
In addition to the extended control unit identification, the following functions are available: data blocks,
coding and adaptation functions as well as sequential and selective final control tests.
The control unit identification contains two different part numbers, one for the hardware and one for the
software.
Entries in the fault memory are stored together with environmental conditions. The following table shows
how they are interpreted:
01101011 5 1 86 0654321 0 25.05.04 15:28:12
15:28:12 Time of occurrence of fault
25.05.04 Date of fault occurrence
0 must always be zero
0654321 km reading on fault occurrence
86 Fault counter
1 Fault frequency counter
5 Fault priority level
1011 Fault type
0 System test performed (zero denotes 'yes')
1 Fault saved (1) / not saved (0)
1 Fault active (1) / passive (0)
0 Warning lamp on / off
x Installation of TV tuner, CD changer or multifunction steering wheel
x Installation of satellite / digital radio (SDARS / DAB)
x Installation of mobile phone preparation
Important! If a third-party mobile phone preparation is retrofitted, the value "3" MUST be coded otherwise the
telephone mute signal will be ignored by the navigation control unit J402.
x Sound characteristic of target vehicle (A3 / A4 / A6 (C5))
x Default setting
x Model
Coding
