Overview - Heater and A/C Unit, Heater Core and Auxiliary Heater Heating Element,

Fig 1: Exploded View Of Heater & A/C Unit, Heater Core, "Denso" Auxiliary Heater Heating Element

Courtesy of AUDI OF AMERICA, LLC

1. Heater Core
   • There are different versions. Refer to the Parts Information.
   • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
2. Bracket
3. Screw
   • 2 Nm
4. O-Ring
   • There are different versions. Refer to the Parts Information.
   • Replace. Refer to HEATER CORE, REMOVING AND INSTALLING .
5. Screw-Type Clamp
   • 2 Nm
6. Coolant Pipe for Heater Core
   • There are different versions. Refer to the Parts Information.
   • Coolant supply from engine
   • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
7. Screw-Type Clamp
   • 2 Nm
8. O-Ring
   • There are different versions. Refer to the Parts Information.
   • Replace. Refer to HEATER CORE, REMOVING AND INSTALLING .
9. Coolant Pipe for Heater Core
   • There are different versions. Refer to the Parts Information.
   • Coolant return to engine
   • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
10. Bolt
    • 2 Nm
11. Foam Spacer
    • For sealing/insulating
    • Note installation position
12. Bracket
    • For coolant pipes
13. Foam Piece
    • For insulating
    • Note installation position
14. Heater and A/C Unit
    • The opening for the auxiliary heater is sealed on vehicles without an Auxiliary Heater Heating Element -Z35-
    • Removing and Installing. Refer to HEATER AND A/C UNIT, REMOVING AND INSTALLING .
    • Disassembling and Assembling. Refer to HEATER AND A/C UNIT, DISASSEMBLING AND ASSEMBLING .
15. Auxiliary Heater Heating Element -Z35-
    • Activation, Checking. Refer to AUXILIARY HEATER, CHECKING ACTIVATION .
    • Removing and Installing. Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
16. Screw
    • 2 Nm
    • Quantity: 2
17. Wire
    • For Auxiliary Heater Heating Element -Z35-
    • Removing and Installing. Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
18. Ground Wire
    • Nut: 9 Nm
    • For the auxiliary heater

Fig 1: Exploded View Of Heater & A/C Unit, Heater Core, Auxiliary Heater Heating Element

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 2 Nm
2. Coolant Pipe for Heater Core
   • There are different versions. Refer to the Parts Information.
   • Coolant supply from engine
   • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
3. Clamp
   • Can be replaced with a hose clamp when servicing.
4. Coolant Pipe for Heater Core
   • There are different versions. Refer to the Parts Information.
   • Coolant return to engine
   • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
5. O-Ring
   • There are different versions. Refer to the Parts Information.
   • Replace. Refer to HEATER CORE, REMOVING AND INSTALLING .
6. Cover
   • For the heater core
7. Screw
   • 2 Nm
8. Foam Spacer
   • For sealing/insulating
   • Note installation position
9. Bracket
   • For coolant pipes
10. Foam Piece
    • For insulating
    • Note installation position
11. Heater and A/C Unit
    • The opening for the auxiliary heater is sealed on vehicles without an Auxiliary Heater Heating Element -Z35-
    • Removing and Installing. Refer to HEATER AND A/C UNIT, REMOVING AND INSTALLING .
    • Disassembling and Assembling. Refer to HEATER AND A/C UNIT, DISASSEMBLING AND ASSEMBLING .
12. Heater Core
    • There are different versions. Refer to the Parts Information.
    • Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
13. Auxiliary Heater Heating Element -Z35-
    • Activation, Checking. Refer to AUXILIARY HEATER, CHECKING ACTIVATION .
    • Removing and Installing. Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
14. Bolt
    • 2 Nm
    • Quantity: 2
15. Wire
    • For Auxiliary Heater Heating Element -Z35-
    • Removing and Installing. Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
16. Ground Wire
    • Nut: 9 Nm
    • For the auxiliary heater
17. Screw
    • 2 Nm
    • Quantity: 3
18. Screw-Type Clamp
19. O-Ring
    • There are different versions. Refer to the Parts Information.
    • Replace. Refer to HEATER CORE, REMOVING AND INSTALLING .