Instrument Panel, Gauges and Warning Indicators: Service Precautions

Safety precautions

If special testing equipment is required during road test, note the following:

WARNING:
- Adhere to the following to avoid risk of accident during measurements while driving and road tests:
- Only use VAS5051 or VAG1551 to read out measuring value blocks.The tester must be secured to the rear seat and operated from there by a second technician.

To reduce the risk of personal injury and/or damage of electric and electronic components, always observe the following:
- Always switch ignition off before connecting or disconnecting test/measurement tools.
- It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
- Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage a control module.

Test requirements:
- Check fuse for function according to wiring diagram.
- Always check coding of instrument cluster according to code table.
- Connect VAS5051 tester or VAG1551 scan tool.
- Switch on ignition.

NOTE:
- If nothing is indicated on display, check voltage supply for VAG 1551 scan tool according to wiring diagram.
- Additional instructions can be called up via the HELP button on the scan tool.
- The -> button is used for advancing through the program sequence.
- An incorrect entry can be canceled using the C button.
- Function 00 "Automatic test sequence" can be performed in operating mode 1 "Rapid data transfer". This automatically checks all control modules installed in the vehicle.

- Switch on ignition.
- Switch printer on via the PRINT button (indicator lamp in button lights up).
- Press button -1- to select "Rapid data transfer" operating mode 1.

Indicated on display

Rapid data transfer HELP
Insert address word XX

Address word: 17
- Press buttons -1- and -7-.

Indicated on display

Rapid data transfer Q
17 - Instrument cluster

- Press -Q- button to confirm input.

Indicated on display after approx. 5 seconds:

8D0920830... B5-INST. Clstr M73 D08 ->
Coding 02242 WSC 06812

- 8D0920830...: Part number of instrument cluster
- B5-INSTRUMENT CLUSTER component marking
- VDO: Manufactured by VDO (M73 : Manufactured by Magnetic Marelli)
- D08: Software version of instrument cluster
- Coding 02242: Coding of instrument cluster
- WSC 06812: dealership number

NOTE: Check code number according to coding table.

- Press -> button.

Indicated on display

Rapid data transfer HELP
Control module does not answer

If one of these messages is displayed, perform trouble shooting according to troubleshooting diagnostic.

Indicated on display

Rapid data transfer HELP
Malfunction in communication setup

Rapid data transfer HELP
K-wire does not switch to Ground

Rapid data transfer HELP
K-wire does not switch to Plus

Rapid data transfer HELP
Select function XX

- Pressing the HELP button will print out an overview of all of the possible functions.

On Board Diagnostic (OBD) functions
The following functions are possible:
02 - Check DTC Memory.
03 - Output Diagnostic Test Mode.
05 - Erase DTC Memory.
06 - End Output.
07 - Code Control Module.
08 - Read Measuring Value Block.
10 - Adaptation.