One problem related to front seat heater/cooler has been reported for the 1999 Volkswagen Cabrio. The most recently reported issues are listed below.
The check engine light keeps coming on & stays on, as does the abs light, the drivers seat heater shorted out, the cars battery exploaded, the drivers power window malfunctions, the volume control on the radio has a malfunction, the hydrolic pump for automatic top malfunctioned & needed to be replaced as well as some other more minor problems.