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Disassembling heater

WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.

Information 

G12837388Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Unscrew screws -8-  and lift up cover for control unit -10-  .
  2. Release clip -9-  at the bottom, push it up and out and remove cover for control unit -10-  .
  3. Unscrew screws -3-  and carefully remove cover for combustion air blower -4-  from the fuel connection for the fuel evaporator -27-  .
  4. Disconnect plug connection -7-  on the heater control unit -6-  .
  5. Unscrew screws -11-  and remove together with retaining clips -12-  and -13-  .
  6. Carefully pull out overheating sensor -14-  and surface sensor -15-  .
  7. Remove control unit -6-  with wiring harness.
  8. Unscrew screws -1-  and remove cover on electric motor -2-  .
  9. Remove combustion air blower -5-  .
    1. 9.1. Release both plug contacts for the combustion air blower from connector housing -7-  using release tool VAS 1978/35-42  (from the release tool set WE 1736  ).
    2. 9.2. Pull fuel cut-off switch -33-  with the graphite sleeve and the sleeve on the wiring harness out of the groove on the combustion air housing.
  10. Release both plug contacts for the fuel cut-off switch -33-  from connector housing -7-  using release tool VAS 1978/35-42  (from the release tool set WE 1736  ).
  11. Remove glow spark plug -19-  .
    1. 11.1. Release both plug contacts for the glow spark plug from connector housing -7-  using release tool VAS 1978/18  (from the release tool set WE 1736  ).
    2. 11.2. Pull glow spark plug out of the combustion chamber insert -24-  .
  12. Remove seal -25-  and replace during installation.
  13. Remove combustion chamber insert -24-  from housing with heat exchanger -20-  .
    1. 13.1. Release both plug contacts for the combustion chamber insert from connector housing -7-  using release tool VAS 1978/35-42  (from the release tool set WE 1736  ).
    2. 13.2. Remove combustion chamber insert.
    3. 13.3. Remove seal -23-  and replace during installation.
  14. Remove wiring harness with overheating sensor -14-  and surface sensor -15-  .
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