Interior Lighting: Overview

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

The interior lighting system consists of:

Courtesy lamps
Demand lamps
Ambient lighting (if equipped)

The courtesy lamps subsystem consists of:

Interior lamps
Puddle lamps (Expedition only)
Welcome mat lamps (Navigator only)
Door ajar switches (integrated into the door latches)
Liftgate ajar switch (manual liftgate)
LTM (power liftgate)
Liftgate glass ajar switch
Courtesy lamp switch (integrated into the instrument panel dimmer switch)
BCM

The courtesy lamps provide illumination to the interior of the vehicle when entering or exiting the vehicle or when requested using the courtesy lamp switch (integrated into the instrument panel dimmer switch).

The demand lamps subsystem consists of:

Interior lamps (map lamps)
Vanity mirror lamps
Glove box lamp
Floor console bin lamp
BCM

The demand lamps provide illumination to specific areas within the vehicle when needed.

The BCM energizes the battery saver relay to supply voltage to the demand lamps when the battery saver feature is not active.

The ambient lighting subsystem consists of:

Ambient lighting harnesses
HVAC module
APIM

The ambient lighting provides aesthetically colored illumination to the center console cup holders and the front and rear footwells for illuminated entry or when the ignition is in run with the parking lamps on. The ambient lighting is controlled using the touchscreen display in the center of the instrument panel.