Lincoln Nautilus Manuals

Lincoln Nautilus: Instrument Panel and Interior Switches Illumination / Instrument Panel and Interior Switches Illumination - System Operation and Component Description. Description and Operation

Lincoln Nautilus 2018-2024 Service Manual / Electrical / Instrumentation and Warning Systems / Instrument Panel and Interior Switches Illumination / Instrument Panel and Interior Switches Illumination - System Operation and Component Description. Description and Operation

System Operation

System Diagram - Networked Illumination

Item Description
2 China only
3 Headlamp Switch
4 Light Sensor
10 GSM
12 DDM
14 LHF Door Lock Switch
15 LHF Window Control Switch
16 LHR Window Control Switch
17 LHR Door Lock Switch
18 PDM
21 RHF Door Lock Switch
22 RHF Window Control Switch
23 RHR Window Control Switch
24 RHR Door Lock Switch

Network Message Chart

  Module Network Input Messages - APIM , DDM , DRDM , FCIM , GSM , GWM , IPC , PDM , PRDM , RHVAC , and RACM (China only)

Broadcast Message Originating Module Message Purpose
Illumination Dimming Level   BCM Used to command the illumination intensity for networked modules and outputs that are hard-wired to networked modules.

Networked Illumination Operation

The dimmable switches and components are illuminated when the headlamp switch is in the PARK, ON, or AUTO position. The system-wide illumination intensity is determined by the BCM based on based on inputs from the ambient light sensor and the dimmer switch (iinternal to the headlamp switch).

The BCM sends the dimming level message to the GWM on the HS-CAN1 . The GWM divides the signal between the MS-CAN , HS-CAN2 , and the HS-CAN3 sending messages to the following modules:

The rear door modules receive their dimming level message from the BCM on a LIN connected to the DDM or PDM . The driver side window control switch also uses a LIN to communicate with the DDM .


  • PDM
  • DDM
  • FCIM


  • GSM


  • IPC
  • APIM
  • RACM (China only)

If the message is not received, or invalid; a CMDTC is set in the respective module, and the illumination level defaults to full intensity.

The IPC allows a 5 second delay before setting a CMDTC and switching to full intensity. During the 5 second delay, the IPC operates at the illumination intensity last received from the BCM .

System Diagram - Non-Networked Illumination

Item Description
2 Door Tweeter Speakers
3 Steering Wheel Switches
4 Heated Rear Seat Switch
5 Power Folding Seat Switch
6 EPB Switch
7 Instrument Panel Switch Pack
8 Overhead Console
9 USB Port
10 Light Sensor
11 Headlamp Switch

Non-Networked Illumination Operation

The BCM calculates the correct intensity for the non-networked illumination sources based on the ambient light intensity input from the light sensor and the requested illumination intensity level input from the dimmer switch. The BCM provides a pulse-width modulated voltage to all non-networked illumination sources.

Field-Effect Transistor (FET) Protection

The BCM is protected by the use of a Field-Effect Transistor (FET) on each output. Refer to the System Diagram to view the different groups of BCM non-networked illumination outputs. For a full description of Field-Effect Transistor (FET) protection,
Refer to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

Component Description

Dimmer Switch

The dimmer switch is a 3 position momentary contact switch, integral to the headlamp switch, providing a non-networked input to the BCM . When the dimmer switch is pressed up for increased illumination intensity, and down for decreased illumination intensity, a ground signal received by the BCM on the corresponding terminal is interpreted as a request to increase or decrease illumination intensity.

    Instrument Panel and Interior Switches Illumination - Overview. Description and Operation

    Overview Dimmable illumination provides backlighting to switches and control components when the headlamps or parking lamps are on. The level of intensity is adjusted by pressing the illumination dim up switch up to increase intensity or the dim down switch to decrease intensity...

    Instrument Panel and Interior Switches Illumination. Diagnosis and Testing

    DTC Chart: Body Control Module (BCM) Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation)...

    Other information:

    Lincoln Nautilus 2018-2024 Service Manual: Climate Control System Health and Safety Precautions. Description and Operation

      WARNING: Air conditioning liquid refrigerant R-134a and R-1234yf are capable of harming eyes or freezing skin. Always wear safety goggles and avoid contact with liquid refrigerant. Failure to follow these instructions may result in serious personal injury...

    Lincoln Nautilus 2018-2024 Service Manual: Satellite Radio / Global Positioning System (GPS) Splitter / Cable. Removal and Installation

    Removal NOTE: Removal steps in this procedure may contain installation details. Remove the information and entertainment display unit. Remove the ACM . Refer to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation)...


    USB Ports

    Locating the USB Ports

    Data Transfer USB Ports

    Lincoln Nautilus. USB Ports

    The USB Ports could be in the following locations:

    On the lower instrument panel. Inside the media bin. Inside the center console.

    Note: These USB ports can also charge devices.

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