| Component Location |

| 1. Heater unit assembly |
| Compoents (1) |

| 1. Heater core cover 2. Heater core & Seal assembly 3. Heater unit pad 4. Shower duct [LH] 5. Mode actuator 6. Heater case [LH] 7. Vent door assembly 8. Floor door assembly 9. Temperature door assembly 10. DEF door assembly |
11. Center duct seal 12. Heater case [RH] 13. Evaporator Core Assembly 14. Heater lower cover 15. Console duct cover 16. Auto defogging actuator 17. Temperature actuator motor assembly 18. Evaporator temperature sensor 19. Shower duct [RH] |
| Replacement |
When prying with a flat-tip screwdriver or use a prying trim tool, wrap
it with protective tape, and apply protective tape around the related
parts, to prevent damage.
|
| 1. |
Disconnect the negative (-) battery terminal.
|
| 2. |
Recover the refrigerant with a recovery/recycling/charging station.
|
| 3. |
When the engine is cool, drain the engine coolant from the radiator.
(Refer to Engine Mechanical System - “Coolant”)
|
| 4. |
Remove the cowl top cover.
(Refer to Body - "Cowl Top Cover")
|
| 5. |
Remove the bolts and the expansion valve (A) from the evaporator core.
|
| 6. |
Disconnect the inlet (A) and outlet (B) heater hoses from the heater
unit.
|
| 7. |
Loosen the cowl cross member mounting bolts.
|
| 8. |
Remove both sides of front seat assembly.
(Refer to Front Seat - "Front Seat Assembly")
|
| 9. |
Remove the main crash pad assembly.
(Refer to Crash Pad - "Main Crash Pad Assembly")
|
| 10. |
Disconnect the steering column connectors.
(Refer to Steering System - "Steering Column and Shaft")
|
| 11. |
Down the steering column after loosening the mounting bolts.
(Refer to Steering System - "Steering Column and Shaft")
|
| 12. |
Remove the shift lever assembly.
(Refer to Automatic Transaxle System - "Shift lever")
|
| 13. |
Disconnect the airbag control module (SRSCM) connector (A).
|
| 14. |
Disconnect the junction box connectors (A).
|
| 15. |
Disconnect the multi box connectors (A).
[Driver's side]
[Passenger's side]
|
| 16. |
Disconnect the connectors (A) and the mounting clips in the front pillar.
[Driver's side]
[Passenger's side]
|
| 17. |
Separate the radiator assembly to obtain space for remove the air guard.
|
| 18. |
Remover the rear air duct (A) after detaching the nuts.
|
| 19. |
Remove the drain hose (A).
|
| 20. |
After loosening the bolts remove the main crash pad and cowl cross bar
assembly (A) together.
|
| 21. |
Disconnect the heater & blower unit connectors.
|
| 22. |
Remove the heater and blower unit (A) from the cowl cross bar after
loosening the mounting nuts.
|
| 23. |
Separate the blower unit (B) from the heater unit (A) after loosening
the screws.
|
| 24. |
Install in the reverse order of removal.
|
Heater
Heater Core: Repair proceduresLincoln Nautilus 2018-2025 Owners Manual: Wipers
Wiper Precautions
Do not operate the wipers on a dry
windshield. This could scratch the glass or
damage the wiper blades. Use the
windshield washers before wiping a dry
windshield.
Fully defrost the windshield before you
switch the windshield wipers on.
Switch the windshield wipers off before
...
Lincoln Nautilus 2018-2025 Owners Manual: Automatic Transmission Positions
Park (P)
WARNING: Move the transmission
selector lever to park (P) only when your
vehicle is stationary.
This position locks the driveline. Come to a
complete stop before putting your vehicle
into and out of park (P).
The electric parking brake could apply when
you shift to park (P) without the ...