Preliminary work
Remove cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
Removing particle filter
Installation Location
Scheme 1
Scheme 2
1. Unscrew the two fastening screws and remove cover.
Scheme 3
2. Pull out filter downwards.
Scheme 4
1. Position filter from underneath and carefully push it into the air-conditioning unit housing.
2. Engage cover -A- and screw in the fastening screws -arrows B-. (Scheme 4)
Subsequent work
Install cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
1. Drain engine coolant. Refer to 19 38 17 Draining and filling in coolant (includes bleeding) - as of MY 2003 (All Models) .
2. Remove the carrier for the instrument panel. Refer to 70 12 19 Removing and installing bracket for dashboard - as of MY 2003 (All Models) .
3. Remove the condenser-evaporator line and compressor-evaporator line at the expansion valve and close the connections. Refer to 87 70 19 Removing and installing expansion valve - as of MY 2003 (All Models) .
Removing heater/air-conditioning unit
| CAUTION | Risk of material damage |
> Remove ignition key. Disconnect battery. Route or isolate the ground strap so that all contact with a ground carrier (e. g. body, seat frame) is avoided. --> 90 IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY - AS OF MY 2003 (ALL MODELS EXCEPT CAYENNE S TIO TITAN) .
Installation Location
Scheme 5
Scheme 6
1. Support the heater/air-conditioning unit under the center section -A- and under the evaporator -B- with a plastic or wooden board. (Scheme 6)
Scheme 7
2. Unclip wiring harness on the left heat exchanger cover.
3. Unscrew both fastening screws on the left heat exchanger cover and unclip the cover.
Scheme 8
4. Unscrew the fastening screw of the right heat exchanger cover and unclip the cover.
Scheme 9
5. Pull the retaining clips -arrows A- off the coolant supply line and return line. (Scheme 9)
Scheme 10
Note. Line the driver's footwell with very absorbent material.
6. Pull the interior carpet away from the coolant lines and place a suitable collecting container in position.
7. -arrows B- Slowly pull out the lines from the heat exchanger and drain the coolant into the collecting container. (Scheme 10)
Scheme 11
8. Unscrew both center air guide fastening screws -4- for the back seat area and pull out the upper air guide toward the rear -arrow A- and the lower one toward the front -arrow B-. (Scheme 11)
Scheme 12
9. Pull out center air vents on the left -A- and right -B-. (Scheme 12)
Scheme 13
10. Turn the left and right temperature sensor -90°- and pull out of the heater/air-conditioning unit. (Scheme 13)
11. Pull the center air vents for the footwell downwards from the heater/air-conditioning unit, lift it toward the rear, and pull it out of the air vents for the footwell.
Scheme 14
12. Release the electric central connector -A- ( -arrows a- ), lever apart the connector lock -B- with two screwdrivers and pull off. (Scheme 14)
Scheme 15
Note. Make sure not to damage the insulation of the main wiring harness. Check the water drainage hose for any cracks, deformities and other damage. Check on the body for damage to both mounts (stars) for the heater/air-conditioning unit. The stars must be able to turn for installation. Both mounts for the stars on the heater/air-conditioning unit must not be damaged.
13. The main wiring harness is secured to the heater/air-conditioning unit with tie-wraps. Separate the tie wraps carefully with side cutters.
Scheme 16
14. The main wiring harness runs along the right A-pillar and is secured to the heater/air-conditioning unit in the fan area with a tie-wrap. Separate the tie wrap carefully with side cutters.
Scheme 17
15. Disconnect the water drainage hose from the air-conditioning unit.
Scheme 18
16. Detach the main wiring harness on the heater/air-conditioning unit.
17. Grasp the heater/air-conditioning unit on the left and right, pull backwards about 5 cm and remove completely.
Installing heater/air-conditioning unit
Note. Before the heater/air-conditioning unit is installed again, the following points must be checked
Scheme 19
Scheme 20
Scheme 21
1. Position the plastic or wooden boards used for removal in the vehicle. Position the heater/air-conditioning unit in the vehicle. Get a second person to check the position of the stars - twist them if necessary.
| WARNING | Risk of damage to the mounts (stars)! |
> The heater/air-conditioning unit must be supported
2. Slide the heater/air-conditioning unit onto both mounts (stars) and support it.
Scheme 22
3. Push the water drainage hose onto the air-conditioning unit and make sure it is seated correctly.
Scheme 23
4. Engage the main wiring harness on the heater/air-conditioning unit.
Scheme 24
5. Lay the main wiring harness on the heater/air-conditioning unit and position it on the heater/air-conditioning unit -A- and -B- using one tie-wrap each. (Scheme 24)
Scheme 25
6. Insert the electric central connectors -A- and -B- into the plug connections until they click into place. (Scheme 25)
Scheme 26
7. Plug the center temperature sensor on the left and right into the heater/air-conditioning unit and turn -90°-. (Scheme 26)
8. Insert the center air vents for the footwell into the air guides for the footwell and push onto the heater/air-conditioning unit.
Scheme 27
9. Connect the center air vents on the left -A- and right -B-. (Scheme 27)
Scheme 28
10. Slide the lower center air guide into the rear air guide -arrow B-, press the upper center air guide onto the heater/air-conditioning unit -arrow A-, and screw down with the two fastening screws -4-. --> Tightening torque: 1 ftlb. (Scheme 28)
11. Position the carrier for the instrument panel. Refer to 70 12 19 Removing and installing bracket for dashboard - as of MY 2003 (All Models) .
12. Tighten the fastening screws -1- and -2-. --> Tightening torque: 7.5 ftlb. (Scheme 28)
13. Remove the support for the heater/air-conditioning unit.
Scheme 29
Note. Always replace O-rings.
14. Insert the coolant supply line and return line -B- into the heat exchanger. (Scheme 29)
15. Push on the retaining clips -A- until the clips click into place. (Scheme 29)
16. Top up engine coolant. Refer to 19 38 17 Draining and filling in coolant (includes bleeding) - as of MY 2003 (All Models) .
17. Check the heating system for leaks.
Scheme 30
18. Clip in left cover and secure with the fastening screws. --> Tightening torque: 1 ftlb.
19. Clip in wiring harness on the left heat exchanger cover.
20. Install the condenser-evaporator line and the compressor-evaporator line on the expansion valve. Refer to 87 70 19 Removing and installing expansion valve - as of MY 2003 (All Models) .
1. Install the carrier for the instrument panel. Refer to 70 12 19 Removing and installing bracket for dashboard - as of MY 2003 (All Models) .
2. Carry out work instruction after disconnecting the battery. --> 90 IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY - AS OF MY 2003 (ALL MODELS EXCEPT CAYENNE S TIO TITAN) .
Remove cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
Installation Location
1. Unscrew the two fastening screws and remove cover.
2. Pull out filter downwards.
Installing particle filter
1. Position filter from underneath and carefully push it into the air-conditioning unit housing.
2. Engage cover -A- and screw in the fastening screws -arrows B-. see scheme 34
Install cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
1. Remove cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
2. Set fan to position 0 on climate control and remove ignition key.
Removing heater/fresh-air blower motor
Installation Location
Scheme 31
Scheme 32
1. Press the plug -A- together and pull off. (Scheme 32)
2. Unscrew seven fastening screws -B-. (Scheme 32)
Scheme 33
3. Lift the electrical leads to one side and remove the fan downwards.
Scheme 34
1. Lift the electrical leads to one side and push fan into housing from underneath.
Scheme 35
2. Hold the fan, screw in the seven fastening screws -B- and screw down. (Scheme 35)
3. Insert the electrical plug connection -A- until the plug can be felt to engage. (Scheme 35)
4. Switch on ignition and the blower in stages on the heating and fresh-air control. Check the function of the blower.
Install cover under dashboard right. Refer to 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models) .
Information
Note. Depending on vehicle equipment and on the required air guide, all interior components must be removed. The removal and installation described provides information about routing and the connection or fastening points. The air guide auxiliary guide (rear four-zones) can be found under Removing and installing auxiliary air conditioning air guide. Refer to 88 34 19 Removing and installing auxiliary air-conditioning air guide - as of MY 2003 (All Models) .
Installation Location
Scheme 36
Scheme 37
1. Pull out side footwell outlet nozzles.
2. First press the center air guides downward, then pull to the rear in direction of travel and pull out of the lower guides.
Scheme 38
1. Pull out side footwell vent.
2. Pull out the center air guides while pressing downward.
Scheme 39
Unscrew the fastening nuts -2- and the pull apart the air guide. (Scheme 39)
Scheme 40
1. Pull out the center console air guide.
2. Unscrew the fastening screws -1- for the air guide on the air conditioning unit and take out the air guide. (Scheme 40)
Installing front air guide two-zones
Insert the center air guides into the lower air guides, press downward, and insert into the air conditioner. Insert the side footwell outlet vents so they can be felt to engage.
Installing front air guide four-zones
Insert the center air guides into the air conditioner. Insert the side footwell outlet vents so they can be felt to engage.
Installing Footwell air guide two-zones
Press the air guides together and screw down using the fastening nuts -2-. --> Tightening torque: 1.5 ftlb. (Scheme 39)
Installing center console air guide two-zones
1. Place the air guide on the air conditioner and screw down using the two fastening screws -1-. --> Tightening torque: 1.0 ftlb. (Scheme 40)
2. Insert the center console air guide and slide it into the air guide on the air conditioner.
Scheme 41
1. Carefully insert a plastic spatula at the four points between the air vent and dashboard and pry out the air vent.
2. Press the electrical plug connection and pull off the plug.
Installing middle air vent
1. Connect electrical plug connection.
2. Position air vent and press into the instrument panel until the air vent engages.
Removing middle air vent
1. Carefully insert a plastic spatula at the four points between the air vent and dashboard and pry out the air vent.
2. Press the electrical plug connection and pull off the plug.
1. Connect electrical plug connection.
2. Position air vent and press into the instrument panel until the air vent engages.
Scheme 42
1. Open the doors and run a plastic spatula between the cover and dashboard and remove the cover.
2. Unlock and disconnect the electrical plug connection.
Scheme 43
3. Carefully insert plastic spatula from the side between air vent and instrument panel, and lever air vent out.
Installing air vent at door
1. Position air vent at outer edge from the side and press into instrument panel. Push air vent in until it can be felt to engage.
Scheme 44
2. Connect electrical plug connection.
3. Position the cover and press on until the cover clips engage.
1. Remove rear spoiler. Refer to 63 55 19 Removing and installing rear spoiler - as of MY 2003 (All Models) .
2. Remove warning triangle (right side only).
3. Remove rear luggage compartment side-panel lining. Refer to 70 03 19 Removing and installing rear luggage compartment side-trim panel - as of MY 2003 (All Models) .
Installation Location
Scheme 45
Scheme 46
1. Remove styrofoam element (left side only) -arrow-. (Scheme 46)
Note. Simply push the styrofoam element aside when removing the right ventilation cover.
Scheme 47
2. Press the upper locking tabs down -arrows A-, press the upper edge of the ventilation cover -a- outwards -arrow B- and remove it. (Scheme 47)
Scheme 48
1. Push in the ventilation cover -arrow A- until you feel the locking tabs -arrows B- engage. (Scheme 48)
Scheme 49
2. Insert styrofoam element -arrow-. (Scheme 49)
1. Install rear luggage compartment side-panel lining. Refer to 70 03 19 Removing and installing rear luggage compartment side-trim panel - as of MY 2003 (All Models) .
2. Insert warning triangle (right side only).
3. Install rear spoiler. Refer to 63 55 19 Removing and installing rear spoiler - as of MY 2003 (All Models) .
Poses Online
See also:
• 70 22 19 Removing and installing cover under dashboard - as of MY 2003 (All Models)
• 19 38 17 Draining and filling in coolant (includes bleeding) - as of MY 2003 (All Models)
• 87 70 19 Removing and installing expansion valve - as of MY 2003 (All Models)
• 90 IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY - AS OF MY 2003 (ALL MODELS EXCEPT CAYENNE S TIO TITAN)
• 88 34 19 Removing and installing auxiliary air-conditioning air guide - as of MY 2003 (All Models)
• 63 55 19 Removing and installing rear spoiler - as of MY 2003 (All Models)