Description & Operation

WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.

The instrument cluster is available in two versions. The mid-line version is equipped with a mini-check system, and the high-line version is equipped with a multifunction monitor with LCD display. See Fig 1 . The mini-check system monitors the brake system, coolant temperature, fuel level, engine oil pressure and ambient temperature. The multifunction monitor incorporates the auto-check system with radio frequency and telephone data display, ambient temperature display and on-board computer display.

Instrument cluster functions are controlled by an internal microprocessor with OBD-II capabilities. If faults occur within instrument cluster components or inputs, Diagnostic Trouble Codes (DTCs) will be set. DTCs are retrieved using a scan tool. If LCD displays "dEF" (defect), the instrument cluster has detected an internal malfunction and must be replaced.

Fig 1: Identifying Instrument Cluster Components (High-Line Version Shown)

Courtesy of AUDI OF AMERICA, INC.