Removing Heating/Fresh-Air Unit

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Information

The heat exchanger connection must be closed off using suitable stoppers after disconnecting the coolant hoses.

Information

Line the driver's footwell with very absorbent material .

Unscrew and remove two fastening screws -1- on the cover on the coolant lines.

Fig 1: Identifying Cover On Coolant Lines With Fastening Screws
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove cover for coolant lines.
Release electric plug connection for the servo motors at the heater/air-conditioning unit -a- and disconnect it -arrow- .

Fig 2: Disconnecting Connector For Servo Motors
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Pull the retaining clips -2- on the coolant supply line and return line downwards -A- .

Fig 3: Pulling Off Retaining Clips On Coolant Lines
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Pull the interior carpet away from the coolant lines and place a suitable collecting container in position.
Carefully pull coolant lines out of the heat exchanger -arrow B- and drain coolant into the collecting container.
Loosen spring band clamp -3- and pull the water drain hose off the heating/fresh-air unit.

Fig 4: Pulling Off Water Drain Hose
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Disconnect the center air vents for the footwell and slide them onto the heating/fresh-air unit. → 805519 REMOVING AND INSTALLING FRONT FOOTWELL OUTLET VENT
Unclip main wire harness and cable duct at the heating/fresh-air unit at the left and right -arrows- .

Fig 5: Removing Main Wire Harness
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Grasp the heating/fresh-air unit at the left and right, pull it backwards and remove completely.