Symptom Chart

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Condition	Possible Sources	Action
All Dimmable non-networked illumination is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test A .
All Dimmable switch illumination is always on	Refer to the Pinpoint Test	GO to Pinpoint Test C .
All Dimmable illumination is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test B .
Dimmable illumination does not dim	Refer to the Pinpoint Test	GO to Pinpoint Test A .
The window control switch illumination is inoperative - Expedition only	Window control switch	CHECK the operation of the power windows. If the power windows operate correctly, INSTALL a new window control switch. REFER to Glass, Frames and Mechanisms . If the power windows do not operate correctly, REFER to Glass, Frames and Mechanisms .
The steering wheel switch illumination is inoperative or always on	Refer to the Pinpoint Test	GO to Pinpoint Test D .
One or more switch illumination is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test E .
Network controlled illumination does not dim	Medium Speed Controller Area Network (MS-CAN) BCM	CARRY OUT the network test. If the scan tool responds with no communication with the BCM, REFER to Module Communications Network . If the scan tool communicates with the BCM, BCM Hardware Testing .
The Instrument Panel Cluster (IPC) illumination is inoperative/does not dim	MS-CAN IPC	CARRY OUT the network test. If the scan tool responds with no communication with the IPC, REFER to Module Communications Network . If the scan tool communicates with the IPC,
The Audio Front Control Module (ACM) illumination is inoperative/does not dim	MS-CAN ACM	CARRY OUT the network test. If the scan tool responds with no communication with the ACM, REFER to Module Communications Network . If the scan tool communicates with the ACM, INSTALL a new ACM. Refer to the appropriate Information and Entertainment Systems article for the procedure.
The HVAC module illumination is inoperative/does not dim	MS-CAN HVAC module	CARRY OUT the network test. If the scan tool responds with no communication with the HVAC module, REFER to Module Communications Network . If the scan tool communicates with the HVAC module, INSTALL a new HVAC module. REFER to Climate Control .
The Rear Entertainment Module (RETM) illumination is inoperative/does not dim	MS-CAN RETM	CARRY OUT the network test. If the scan tool responds with no communication with the RETM, REFER to Module Communications Network . If the scan tool communicates with the RETM, INSTALL a new RETM. Refer to the appropriate Information and Entertainment Systems article for the procedure.