General Information
General Information
The instrument cluster contains an electronic speedometer, tachometer, liquid crystal (LCD) displays for odometer, trip odometer/clock, as well as analog coolant temperature and fuel level gauges. Control and warning lamps are situated within and between the speedometer and tachometer. Automatic transmission models also contain an LCD gear indicator display.
Where available, an LCD multi-function trip computer (MFI) with two operating modes is located in the tachometer display. The MFI includes selectable displays for trip time/mileage, average trip speed, average trip fuel consumption and outside temperature.
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 starts.
Instrument clusters from m.y. 2000 > are integrated into the "Powertrain" 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 "Powertrain" 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.
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 VAG 1551/1552 Scan Tool (ST) or VAS 5051 Vehicle Diagnostic Tester.
Notes on exchanging instrument cluster
- Do not disassemble instrument cluster.
- Instrument clusters contain no field serviceable components. All malfunctions require replacement of instrument cluster.
- When the replacement of a malfunctioning instrument cluster is necessary, follow exchange part procedures.
- Complete the report form and return together with instrument cluster.
- Use the original packaging from the new cluster when returning modules.
- Replacement instrument clusters must be coded according to vehicle market version and equipment level variables using the OBD program
Vehicles 05.99 > 05.00
Vehicles 05.00 > Instrument Cluster From 05.00, Coding (Function 07)
- Replacement instrument clusters must be adapted for anti-theft immobilizer function See table of contents for specific applications.
- The Data Bus On Board Diagnostic Interface -J533- must be coded depending on the vehicle equipment when replacing the instrument cluster. Refer to "Description of On-Board Diagnostics/General Information" Testing and Inspection