General information: Notes

WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Before troubleshooting or servicing, technicians must be familiar with the function and operation of the various, applicable radio systems installed. Refer to owner's manual radio system supplement.

Up to late 10.97 production, "Deluxe" or "Premium" radio units were installed. These units are characterized by NOT having On Board Diagnostic (OBD) capabilities.

A new radio generation was installed as a running change from late 10.97 production as follows: Jetta VIN WM142005, Golf/Cabrio VIN: WM146415. These new radios are referred to as "Sound System".

Radio anti-theft codes in all units are fixed (cannot be changed) and must be re -entered in to the radio whenever power (B+) or Ground (GND) to the radio has been disconnected, or if inefficient battery voltage is present. Refer to owner's manual radio system supplement.

When retrofitting components, carrying out On Board Diagnostic ("Sound System" only) or related repairs, use appropriate wiring diagram. Refer to appropriate WIRING SYSTEM article.

Removing and installing interior trim components. Refer to INTERIOR TRIM .

Only factory approved radios and radio equipment (available from Volkswagen of America, Inc.) should be installed. This ensures proper installation and optimum function.

"Sound System" units are controlled by an internal microprocessor with On Board Diagnostic (OBD) capability. If malfunctions occur in monitored 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.

Before performing any troubleshooting or inspection on sound System units, always begin by checking for DTCs using the OBD program. DTCs stored in memory are retrieved/checked with VAG 1551 or VAG 1552 Scan Tool (ST). Refer to READ MEASURING VALUE BLOCK (FUNCTION 08) .