Display Field No. 3
WARNING: This page is about a different car, the 2001 Volkswagen EuroVan, 2000 Volkswagen EuroVan, 1999 Volkswagen EuroVan, and 1997 Volkswagen EuroVan. However, it is still accessible from the selected car via links, so may be relevant.
Measure temperature at auxiliary heater core temperature sensor. If value displayed is not same as value measured, check wiring and connectors at auxiliary heater core. If wiring and sensors are okay, replace auxiliary heater core temperature sensor.