Contents Wiring diagrams Section: Automatic HVAC System All sections

Heating, Ventilation (Hatchback): Overview Volkswagen Beetle A4

Automatic HVAC System 4 illustrations ~566 words

HEATING AND VENTILATION SYSTEM ASSEMBLY OVERVIEW

CAUTIONBefore beginning repairs on the electrical system: Obtain the anti-theft radio security code. Switch off all electrical consumers. Switch off ignition and remove ignition key. Disconnect negative (-) battery terminal. When disconnecting and reconnecting battery terminals, observe all applicable Notes and torque specifications, as well as instructions on performing OBD program and electrical system function checks as specified Removal and Installation .

Scheme 1

Scheme 1
  1. Heating and ventilation controls With Fresh Air Blower Switch -E9- and Fresh Air Blower/Recirculated Air Switch -E184- Removing and installing «HEATING AND VENTILATION CONTROLS»(ref-492801-S25861503602012080600000) Assembly «HEATING AND VENTILATION CONTROLS ASSEMBLY OVERVIEW»(ref-492801-S31441233662012080600000) Installing and adjusting cables «HEATING AND VENTILATION CABLES»(ref-492801-S35211093132012080600000)
  2. Dust and pollen filter Removing and installing «DUST AND POLLEN FILTER»(ref-492801-S12800298122012080600000)
  3. Side window air outlet Removing «SIDE WINDOW AIR OUTLETS»(ref-492801-S03396938762012080600000)
  4. Side air outlets Removing «SIDE AIR OUTLETS»(ref-492801-S33468912862012080600000)
  5. Center air outlet console Removing «CENTER AIR OUTLET CONSOLE»(ref-492801-S38268480632012080600000)
  6. Instrument panel cross member Loosening and tightening «INSTRUMENT PANEL CROSSMEMBER»(ref-492801-S14727030012012080600000)
  7. Fresh/Recirculating Air Door Motor -V154- Removing and installing «FRESH/RECIRCULATING AIR DOOR MOTOR»(ref-492801-S11139268952012080600000)
  8. Fresh Air Blower -V2- Removing and installing «FRESH AIR BLOWER»(ref-492801-S39230962432012080600000)
  9. Fresh Air Blower Series Resistor With Fuse -N24- First remove Fresh Air Blower -V2- «FRESH AIR BLOWER»(ref-492801-S39230962432012080600000)
  10. Intermediate duct
  11. Cables Installing and adjusting «HEATING AND VENTILATION CABLES»(ref-492801-S35211093132012080600000)
  12. Rear footwell air outlet duct
  13. Gasket
  14. Connecting duct With front footwell air outlet Removing «CONNECTING DUCT»(ref-492801-S07842865882012080600000)
  15. Heating and ventilation unit Removing: Remove instrument panel «Removal and Installation»(ref-492755-S39811613742012080600000) Carefully pinch off both coolant hoses to heater core and disconnect hoses. Loosen instrument panel cross member «INSTRUMENT PANEL CROSSMEMBER»(ref-492801-S14727030012012080600000) Remove unit Disassembly and assembly «HEATING AND VENTILATION UNIT ASSEMBLY OVERVIEW»(ref-492801-S14404599122012080600000)
  16. Heater core Always use new coolant after replacement Replacing «HEATING AND VENTILATION UNIT ASSEMBLY OVERVIEW»(ref-492801-S14404599122012080600000)
  17. Heater core/bulkhead seal Note installation position «HEATER CORE BULKHEAD SEAL, INSTALLATION POSITION»(ref-492801-S24222096562012080600000)
  18. Defroster duct Replacing: Remove instrument panel «Removal and Installation»(ref-492755-S39811613742012080600000) Loosen instrument panel cross member «INSTRUMENT PANEL CROSSMEMBER»(ref-492801-S14727030012012080600000)
  19. Instrument panel Removing and installing «Removal and Installation»(ref-492755-S39811613742012080600000)
  20. Center air outlet duct
  21. Defroster air outlet panel Removing «DEFROSTER AIR OUTLET PANEL»(ref-492801-S27994045312012080600000)

Scheme 2

Scheme 2: HEATING AND VENTILATION CONTROLS ASSEMBLY OVERVIEW
  1. Heating and ventilation controls With Fresh Air Blower Switch -E9- With Fresh Air Blower/Recirculated Air Switch -E184- Removing and installing «HEATING AND VENTILATION CONTROLS»(ref-492801-S25861503602012080600000)
  2. Illumination filter
  3. Trim panel
  4. Fresh Air Control Illumination -L16- 12V, 1.2W
  5. Rotary control For blower speed To remove: Use pliers with suitable plastic or rubber protection on jaws
  6. Rotary control For air distribution To remove: Use pliers with suitable plastic or rubber protection on jaws
  7. Rotary control For interior temperature To remove: Use pliers with suitable plastic or rubber protection on jaws

Scheme 3

Scheme 3: HEATER CORE BULKHEAD SEAL, INSTALLATION POSITION

The seal between the heater core and the bulkhead has a positioning mark.

Install the seal -1- so that the notches on the seal and the base plate -2- align -3-.

Scheme 4

Scheme 4: HEATING AND VENTILATION UNIT ASSEMBLY OVERVIEW
  1. Heater core Removing -- Remove instrument panel. «Removal and Installation»(ref-492755-S39811613742012080600000) -- Loosen instrument panel cross member «INSTRUMENT PANEL CROSSMEMBER»(ref-492801-S14727030012012080600000) WARNING: The cooling system is pressurized when the engine is warm. Wear gloves and other protection and carefully release system pressure if necessary, before performing repairs. -- Carefully pinch off both coolant hoses to heater core and disconnect hoses. -- Partially remove heating and ventilation unit. -- Press retainer clips and remove heater core. Installing -- Install in reverse order of removal, noting the following: Always use new coolant after replacement.
  2. Self-tapping screw Use if retainer clips break
  3. Air distribution housing
  4. Fresh/Recirculating Air Door Motor -V154- Removing and installing «FRESH/RECIRCULATING AIR DOOR MOTOR»(ref-492801-S11139268952012080600000)
  5. Self-tapping screw
  6. Fresh Air Blower -V2- Removing and installing «FRESH AIR BLOWER»(ref-492801-S39230962432012080600000)
  7. Cover
  8. Self-tapping screw
  9. Fresh Air Blower Series Resistor With Fuse -N24- First remove Fresh Air Blower -V2- «FRESH AIR BLOWER»(ref-492801-S39230962432012080600000)
  10. Self-tapping screw
  11. Central door lever Installing and adjusting «CENTRAL DOOR LEVER»(ref-492801-S37389304472012080600000)
  12. Temperature door lever
  13. Base plate
  14. Heater core bulkhead seal Note installation position Installing «HEATER CORE BULKHEAD SEAL, INSTALLATION POSITION»(ref-492801-S24222096562012080600000)