Audi Workshop Manuals > A3 Mk2 > Heating, ventilation, air conditioning system > Auxiliary heating > Aux. heater/heater booster > Layout of components for auxiliary heater in vehicle > Auxiliary heater remote
Audi Workshop Manuals > A3 Mk2 > Heating, ventilation, air conditioning system > Auxiliary heating > Aux. heater/heater booster > Activation of auxiliary heater with remote control > Block diagram of auxiliary