Instrument Cluster, From 06.99

Instrument Cluster, From 06.99

The instrument cluster is controlled by an internal microprocessor with On Board Diagnostic (OBD) capability. If malfunctions occur in monitored sensors and components, Diagnostic Trouble Codes (DTC) will be stored in memory together with an indication of malfunction type. A maximum of 4 DTCs can be stored simultaneously.

Sporadic malfunctions (indicated in the readout by "SP") are automatically cancelled if not repeated in the next 50 engine start cycles.

For OBD purposes, the instrument cluster counts one start cycle whenever the ignition is switched on longer than 5 min. and a minimum speed of 30 km/h (18.5 mp/h) is exceeded.

Before performing any troubleshooting or inspection, always begin by checking for DTCs using the OBD program. DTCs stored in memory are retrieved/checked with either the scan tool VAG 1551 / VAG 1552 or vehicle diagnostic testing and information system VAS 5051 / VAS 5052 .

Instrument clusters from 06.99 are integrated into the vehicle CAN Data Bus network (may also be known as "CAN-Bus" or "Data-Bus").

The data bus on board diagnostic interface J533 (which is integrated into the instrument cluster) enables data to be exchanged between the vehicle CAN Data-Bus network and the Data Link Connector (DLC) "K-wire".

The data bus on board diagnostic interface J533 has specific On Board Diagnostic (OBD) capabilities.

The data bus on board diagnostic interface J533 must be coded depending on the vehicle equipment when replacing the instrument cluster:
- Instrument clusters through 09.00.
- Instrument clusters from 10.00.

NOTE: The following description and illustrations deal specifically with the scan tool VAG 1551 . VAG 1552 or vehicle diagnostic testing and information system VAS 5051 / VAS 5052 procedures are similar.

Replacing Instrument Cluster, General Information
- Do not disassemble instrument cluster.
- When replacing an instrument cluster is necessary, follow normal exchange part procedures.
- Complete report form and return together with instrument cluster.
- Use original packaging from new cluster when returning items.
- Replacement instrument clusters must be coded according to vehicle market version and equipment level variables using scan tool VAG 1551.
- Odometer reading must be adapted to the replacement instrument cluster.
- The data bus on board diagnostic interface J533 must be coded according to vehicle market version and equipment level variables:
- Instrument clusters through 09.00.
- Instrument clusters from 10.00.
- Where applicable, replacement instrument clusters must be adapted to Engine Control Module (ECM) for anti-theft immobilizer function. Use vehicle diagnostic testing and information system VAS 5051 / VAS 5052 in operating mode "Guided Fault Finding".