Volkswagen Tiguan Service and Repair Manual: Overview - Heater and A/C Unit

Overview - Heater and A/C Unit, Climatic

1. Temperature Control Door Motor -V68-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initialize the basic setting using the Vehicle Diagnostic Tester.
2. Bracket
3. Bolts
   • It is necessary to remove the bolts in order to separate the bracket from the air distribution and evaporator housing.
4. Cover
5. Recirculation Door Motor -V113-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing
   • Replacing: initialize the basic setting using the Vehicle Diagnostic Tester
6. Air Intake Housing
   • With air recirculation door
7. Evaporator Housing Upper Section
   • Evaporator Housing, Disassembling and Assembling.
8. Evaporator Housing Lower Section
   • Evaporator Housing, Disassembling and Assembling.
9. Evaporator
   • Removing and installing.
10. Evaporator Temperature Sensor -G308- or Evaporator Vent Temperature Sensor -G263-
    • Check using the Vehicle Diagnostic Tester.
    • Removing and installing.

Note

One or both of the component designations will appear, depending on software. The tasks are the same.

11. Glove Compartment Cooling Connection
    • To remove, the glove compartment must be removed.
    • Installation position of glove compartment cooling connection.
12. Glove Compartment Cooling Coolant Hose
    • To remove, the glove compartment must be removed.
13. Fresh Air Blower Series Resistor with Fuse -N24-
    • Removing and installing.
14. Fresh Air Blower -V2-
    • Removing and installing.
15. Dust and Pollen Filter
    • With activated charcoal filter
    • Removing and installing.
16. Cover
    • For dust and pollen filter
17. Heater Core
    • Removing and installing.
18. Heater Core Trim Panel
19. Auxiliary Heater Heating Element -Z35-
    • Only on vehicles with a diesel engine without an auxiliary heater.
    • Checking: using the Vehicle Diagnostic Tester under Heating, Ventilation and Air Conditioning; OBD-Capable Systems; Auxiliary Heater; Electrical Components.
    • Removing and installing.
20. Junction Box

Installation Position of Glove Compartment Cooling Connection

1. Connection
2. Valve

Overview - Heater and A/C Unit, Electric-Manual Climate Control System

1. Temperature Control Door Motor -V68-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initialize the basic setting using the Vehicle Diagnostic Tester.
2. Bracket
3. Bolts
   • It is necessary to remove the bolts in order to separate the bracket from the air distribution and evaporator housing.
4. Cover
5. Recirculation Door Motor -V113-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initialize the basic setting using the Vehicle Diagnostic Tester.
6. Air Intake Housing
   • With air recirculation door
7. Evaporator Housing Upper Section
   • Evaporator Housing, Disassembling and Assembling.
8. Evaporator Housing Lower Section
   • Evaporator Housing, Disassembling and Assembling.
9. Evaporator
   • Removing and installing.
10. Evaporator Temperature Sensor -G308- or Evaporator Vent Temperature Sensor -G263-
    • Check using the Vehicle Diagnostic Tester.
    • Removing and installing.

Note

One or both of the component designations will appear, depending on software. The tasks are the same.

11. Glove Compartment Cooling Connection
    • To remove, the glove compartment must be removed.
    • Installation position of glove compartment cooling connection.
12. Glove Compartment Cooling Coolant Hose
    • To remove, the glove compartment must be removed.
13. Fresh Air Blower Series Resistor with Fuse -N24-
    • Removing and installing.
14. Fresh Air Blower -V2-
    • Removing and installing.
15. Dust and Pollen Filter
    • With activated charcoal filter
    • Removing and installing.
16. Cover
    • For dust and pollen filter
17. Heater Core
    • Removing and installing.
18. Heater Core Trim Panel
19. Auxiliary Heater Heating Element -Z35-
    • Only on vehicles with a diesel engine without an auxiliary heater.
    • Checking: using the Vehicle Diagnostic Tester under Heating, Ventilation and Air Conditioning; OBD-Capable Systems; Auxiliary Heater; Electrical Components.
    • Removing and installing.
20. Junction Box
21. Air Distribution Door Motor -V428-
    • Removing and installing.

Overview - Heater and A/C Unit, Climatronic

1. Front Air Distribution Door Motor -V426-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initiate the basic setting using the Vehicle Diagnostic Tester.
2. Left Temperature Control Door Motor -V158-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initiate the basic setting using the Vehicle Diagnostic Tester.
3. Defroster Door Motor -V107-
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initiate the basic setting using the Vehicle Diagnostic Tester.
4. Bracket
5. Bolts
   • It is necessary to remove the bolts in order to separate the bracket from the air distribution and evaporator housing.
   • Quantity: 4
6. Fresh Air/Recirculating Air/Back Pressure Door Motor -V425- with Fresh Air/Recirculating Air/Back Pressure Door Motor Position Sensor -G644-, from June 2007
   • Check using the Vehicle Diagnostic Tester.
   • Removing and installing.
   • Replacing: initiate the basic setting using the Vehicle Diagnostic Tester.

Note

• Through 12/2003 Fresh/Recirculated Air Door Motor -V154-
• From 01/2004 through 05/2007, Recirculation Door Motor -V113-

7. Air Intake Housing
   • With fresh air and recirculation door
   • With back pressure door (Climatronic)
8. Evaporator Housing Upper Section
   • Evaporator Housing, Disassembling and Assembling.
9. Evaporator Housing Lower Section
   • Evaporator Housing, Disassembling and Assembling.
10. Evaporator
    • Removing and installing.
11. Evaporator Vent Temperature Sensor -G263- or Evaporator Temperature Sensor -G308-
    • Check using the Vehicle Diagnostic Tester.
    • Removing and installing.
12. Glove Compartment Cooling Connection
    • Installation position of glove compartment cooling connection.
13. Glove Compartment Cooling Coolant Hose
14. Fresh Air Blower -V2- with Fresh Air Blower Control Module -J126-
    • Check using the Vehicle Diagnostic Tester.
    • Fresh Air Blower -V2-, removing and installing.
    • Fresh Air Blower Control Module -J126-, removing and installing.
15. Dust and Pollen Filter
    • With EVAP canister
    • Removing and installing.
16. Cover
    • For the dust and pollen filter
17. Heater Core
    • Removing and installing.
18. Right Temperature Control Door Motor -V159-
    • Check using the Vehicle Diagnostic Tester.
    • Removing and installing.
    • Replacing: initiate the basic setting using the Vehicle Diagnostic Tester.
19. Auxiliary Heater Heating Element -Z35-
    • Only installed on vehicles with Diesel engine without auxiliary heater.
    • Checking: using the Vehicle Diagnostic Tester under Heating, Ventilation and Air Conditioning; OBD-Capable Systems; Auxiliary Heater; Electrical Components.
    • Removing and installing.
20. Heater Core Trim Panel
21. Junction Box

Installation Position of Glove Compartment Cooling Connection

1. Connection
2. Valve

Overview - Evaporator Housing

• Remove the heater and A/C unit.
• Disconnect the air distribution housing/evaporator housing from the heater and A/C unit.

1. Evaporator Housing Lower Section
   • Disassembling and Assembling.
2. Evaporator
   • Check insulation, it must be completely present
   • Removing and installing.
3. Clamp
4. Evaporator Housing Upper Section
   • Disassembling and Assembling.
5. Screw
6. Seal/Insulation
   • Expansion valve heat insulation
   • Removing and installing.
7. Bracket
   • Removing and installing.

Evaporator, Removing and Installing

Removing

• Remove the heater and A/C unit.
• Disassemble the heater and A/C unit. For vehicles with Climatic.
• Disassemble the evaporator housing.
• Remove the evaporator -A- from the evaporator housing lower section.

Installing

Note

• Before inserting the evaporator, check condensation water drain and clean drain if necessary.
• Before inserting evaporator, clean evaporator housing and the evaporator, if necessary.

• When inserting evaporator -A- into lower section of evaporator housing, and when assembling both housing halves, make sure the seal -F- is not damaged.
• Check seal -F- (it must be glued all the way around) before inserting evaporator.
• Mount the bracket -C- and seal/insulation -B- on the evaporator connecting pipes -D- and -E-.
• Insert evaporator -A- into lower section of evaporator housing as shown in the illustration.

Note

• After assembling both housing halves, check the seal / insulation -B- for correct positioning on the holes for both refrigerant lines -D and E-.
• Check seating of bracket -C- on both refrigerant lines -D and E- for correct seating.
• If heat protection insulation -B- is missing or not installed correctly, it can cause reduced performance of the A/C system (change of adjusted control characteristics of expansion valve due to radiant heat).