Door Buttons Not Illuminated - Is This Normal?

[McGruber]

Recently bought a pre-owned 2020 Edge Titanium with 301A.

 

At night, when I approach the car and open the door, the interior door buttons are NOT illuminated (the memory seat 1-2-3 buttons, lock/unlock, etc.).  But when I close the door and start the engine, the buttons illuminate. See attached picture.

 

I know it doesn't seem like a huge deal, but I want to make sure everything is working right, while it's under the CPO warranty period.

 

Hoping someone with a 2020 model Edge can check if their vehicle behaves the same way.

 

Thanks all!

 

 

[dabangsta]

They don't illuminate on my 2019, and I don't think they should. They are not functional until in accessory or run (or delay).

[Haz]

Welcome to the Forum, McGruber !

 

I'm curious if your headlamps were set to Autolamp, and if ignition was "on" with or without the engine running?

 

The 2020 Edge Workshop Manual states door-panel switch backlighting is activated when parking lamps are "on", though parking lamps and dimmable backlighting are also temporarily "on" during Illuminated Entry and Exit, as described below...

 

Placing your device cursor over underlined acronyms may yield full-word descriptions.

 

Instrument Panel and Interior Switches Illumination

System Operation

System Diagram - Networked Illumination

 

Network Message Chart

  Module Network Input Messages - ACM , APIM , DDM , FCIM , GWM , IPC and PDM .

 

Broadcast Message	Originating Module	Message Purpose
Illumination Dimming Level	BCM	Used to command the illumination dimming level for networked modules and outputs that are hardwired to networked modules.

 

Networked Illumination Operation

The dimmable switches and components are illuminated when the parking lamps are on. The system-wide illumination dimming level is determined by the BCM . Based on the ambient light level input from the light sensor and the requested illumination dimming level input from the dimmer switch, the BCM calculates the correct dimming level. The BCM sends the illumination dimming level message to the GWM on the HS-CAN1 .

 

The GWM distributes the message to the following components:

MS-CAN

• FCIM
• DDM
• PDM

HS-CAN3

• IPC
• APIM
• ACM

The receiving modules use the illumination dimming level message to determine the backlighting intensity of internal and external non-networked illumination sources. If a module does not receive the illumination dimming level message or the data received is deemed invalid, the module sets a DTC in continuous memory and defaults to full nighttime intensity.

 

If the IPC does not receive the dimming level or ambient light level network messages from the BCM for up to 5 seconds, the IPC illumination remains at the last level based on the last message received. If the IPC receives invalid or no signals for more than 5 seconds, the IPC defaults to full night illumination level.

 

On vehicles equipped with autolamps, if the exterior lamps are activated during the daytime, the message center illumination remains at full intensity and does not dim from the illumination dimmer switch. If the vehicle travels under a bridge or through a tunnel, the low level of ambient light causes the illumination level of the message center to change to the level set by the illumination panel dimmer switch. The message center illumination changes back to full intensity when the intense ambient light is restored.

 

The hazard switch is integral to the FCIM and cannot be serviced separately.

 

System Diagram - Non-Networked Illumination

 

Non-Networked Illumination Operation

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

 

Field-Effect Transistor (FET) Protection

Field-Effect Transistor (FET) protection is used to protect the BCM output drivers from damage in the event an excessive current draw is detected on a BCM output. Each illumination circuit connected to the BCM is separately protected. Refer to the System Diagram in this section to view the different groups of BCM non-networked illumination outputs. 

 

 

Component Description

Dimmer Switch

The illumination dimmer switch is a momentary contact switch that is integral to the headlamp switch. The headlamp switch is non-networked to the BCM . When the illumination dimmer switch is pressed up or down, the switch completes a ground circuit to the BCM corresponding to the desired action (increase or decrease illumination brightness).

 

Field Effect Transistor (FET) Protection

The BCM utilizes an Field Effect Transistor (FET) protective circuit strategy for many of its outputs, for example, lamp output circuits. Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or ground provided by the module) when a fault event is detected.

 

A Field Effect Transistor (FET) is a type of transistor that the control module software uses to control and monitor current flow on module outputs. The Field Effect Transistor (FET) protection strategy prevents module damage in the event of excessive current flow.

Output loads (current level) are monitored for excessive current draw (typically short circuits). When a fault event is detected the Field Effect Transistor (FET) turns off and a short circuit DTC sets. The module resets the Field Effect Transistor (FET) protection and allows the circuit to function when the fault is corrected or the ignition state is cycled off and then back on.

 

When the excessive circuit load occurs often enough, the module shuts down the output until a repair procedure is carried out. Each Field Effect Transistor (FET) protected circuit has three predefined levels of short circuit tolerance based on a module lifetime level of fault events based upon the durability of the Field Effect Transistor (FET). If the total tolerance level is determined to be 600 fault events, the three predefined levels would be 200, 400 and 600 fault events.

 

When each level is reached, the DTC associated with the short circuit sets along with DTC U1000:00. These Diagnostic Trouble Codes (DTCs) can be cleared using the module on-demand self-test, then the Clear DTC operation on the scan tool (if the on-demand test shows the fault corrected). The module never resets the fault event counter to zero and continues to advance the fault event counter as short circuit fault events occur.

 

If the number of short circuit fault events reach the third level, then Diagnostic Trouble Codes (DTCs) U1000:00 and U3000:49 set along with the associated short circuit DTC . DTC U3000:49 cannot be cleared and the module must be replaced after the repair.

 

 

Interior Lighting - System Operation

Illuminated Entry and Exit

The illuminated entry and exit features provide temporary illumination of the parking lamps, the dimmable backlighting, the ambient backlighting and the courtesy lamps. Refer to the table for additional information.

 

NOTE: An arbitrator (software programming) within the BCM determines which actions take precedence over others (for example, an open door keeps the courtesy lamps on even when a command to lock the doors is received).

 

Action	Parking Lamps	Courtesy Lamps	Dimmable Backlighting	Ambient Lighting
RKE transmitter or mechanical unlocking of the doors	On for 25 seconds	On for 25 seconds	On for 25 seconds	Off
RKE transmitter or mechanical locking of the doors	Off	Off	Off	Off 3 seconds after courtesy lamps turned off
Open a closed door after previously unlocking (no ignition state change since unlock)	Off (on for remaining time if unlocked from transmitter or mechanical unlocking of the doors)	On	Off	On
Close all doors	Off	On for 25 seconds	On for 25 seconds	On for 25 seconds
Ignition changed to ON	Off	On for 25 seconds	Off	On
Ignition changed out of ON	Off	On for 25 seconds	On for 25 seconds	On for 25 seconds
Open a door after the ignition is changed to OFF	Off	On	Off	On (color is red on the open door)
Ignition is OFF and doors are unlocked from the door lock switch	Off	On for 25 seconds	Off	Off
Ignition is OFF and doors are locked from the door lock switch	Off	Off	Off	Off

 

Good luck!

 

Edited December 14, 2023 by Haz

[omar302]

On my 2016 Edge, the door switches do NOT turn on with the door open. They turn on with the ignition, at least at night regardless of light switch position. 

[dabangsta]

20 minutes ago, omar302 said:

On my 2016 Edge, the door switches do NOT turn on with the door open. They turn on with the ignition, at least at night regardless of light switch position. 

Same here. If the car is off, irregardless of the position of the light switch those lights are off. With the car in "accessory" (push start without pushing brakes), On, and accessory delay those lights are on, irregardless of the light switch position.