Display Field No. 4
WARNING: This page is about a different car, the 2003 Volkswagen EuroVan and 2002 Volkswagen EuroVan. However, it is still accessible from the selected car via links, so may be relevant.
First digit on display is for air recirculation button and second digit is for airflow control button. Display will show a "1" if button is switched on and a "0" with button switched off. If display is not as specified, check wiring and connections from CCM to vacuum valve rail. If wiring and connectors are okay, replace vacuum valve rail.