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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different car >> Section 962 (Climate Control System (Service Information - (Front Heater & A/C Unit) CAEB, CGXB, CEUC, CTUA, CEUC, CAED, CHJA, CPNB, CRDB, CPNB, CREC, CTGE, CYNB, CWUC, CREH, CWUB)) >> Air Conditioning >> Front Heater And A/C Unit >> Overview - Heater And A/C Unit

Overview - Heater And A/C Unit

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Fig 1: Heater And A/C Unit Exploded View
GWWA87-10967Courtesy of AUDI OF AMERICA, LLC
  1. Coolant Pipe for the Heater Core
    • Coolant supply from engine
  2. Coolant Pipe for the Heater Core
    • Coolant return to engine
  3. O-Ring Seal
    • Replacing
  4. Hose Clamp
    • 2 Nm
  5. Bracket for Coolant Pipes
    • For the heater core
  6. Bolt
    • 2 Nm
  7. Auxiliary Heater Heating Element -Z35-
    • For vehicles with TDI- engines and for vehicles with a high voltage system (hybrid vehicle with gasoline engine)
      NOTE:

      Currently an Auxiliary Heater Heating Element -Z35- is also installed on vehicles with a high voltage system (hybrid vehicles) and a gasoline engine. Refer to ELECTRICAL AUXILIARY HEATER ACTIVATION, CHECKING .

      For vehicles with a gasoline engine, the electric auxiliary heater (the Auxiliary Heater Heating Element -Z35-) is activated by the Climatronic Control Module -J255- control head via the local data bus (activated via the same outlet and also via the Fresh Air Blower Control Module -J126-) on the Auxiliary Air Heater Control Module -J604-. If there is a complaint with these vehicles, check the Fresh Air Blower Control Module -J126- or Fresh Air Blower -V2- and the Auxiliary Air Heater Control Module -J604-. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding"  function and the Appropriate Wiring Diagram.

    • Currently there is no heating element installed for vehicles with a parking heater
    • Checking. Refer to ELECTRICAL AUXILIARY HEATER ACTIVATION, CHECKING .
    • Removing and Installing. Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
  8. Bolt
    • 2 Nm
    • Quantity: 2
  9. Wire
    • For Auxiliary Heater Heating Element -Z35-
  10. Ground (GND) Cable
    • Nut - 9 Nm
    • For the auxiliary heater
  11. Air Distribution Housing
  12. Heat Exchanger
  13. Hose Clamp
    • 2 Nm
  14. O-Ring Seal
    • Replacing
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