Symptom Chart

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

Condition	Possible Sources	Action
A module does not communicate with the diagnostic scan tool	Fuse Wiring, terminals or connectors Module	REFER to: Communications Network .
The lane keeping aid or lane keeping alert does not turn on or activate	REFER to the Pinpoint Test	GO to Pinpoint Test A
The lane keeping aid or lane keeping alert does not provide driver feedback once activated	REFER to the Pinpoint Test	GO to Pinpoint Test B
The display lines in the IPC or HUD (if enabled) do not turn green after the Lane Keeping System (LKS) is turned on	Road conditions	NOTE: The display lines are gray when the IPMA cannot detect lane marking(s) on the road in front of the vehicle. VERIFY the road conditions described under System Display. REFER to: Lane Keeping System - System Operation and Component Description .
The lane keeping aid or lane keeping alert provides early feedback on one side of the lane and late feedback on the other side of the lane	Dirty or cracked windshield	CLEAN and INSPECT the windshield in front of the camera.
	Loose or incorrectly installed IPMA	INSPECT the IPMA for proper installation. REFER to: Image Processing Module A (IPMA) .
	Camera alignment	Using a diagnostic scan tool, PERFORM the front camera alignment.
Degraded performance from the lane keeping aid or lane keeping alert system	Dirty or cracked windshield	CLEAN and INSPECT the windshield in front of the camera.
	Camera alignment	Using a diagnostic scan tool, PERFORM the front camera alignment.
LANE KEEPING SYSTEM MALFUNCTION - SERVICE REQUIRED message in the IPC	PSCM concern	RETRIEVE and REPAIR all PSCM Diagnostic Trouble Codes (DTCs). REFER to: Power Steering .
FRONT CAMERA TEMPORARILY NOT AVAILABLE message in the IPC	Temporary over temperature condition	REMOVE the vehicle from direct sunlight, RECHECK after 10 minutes.
FRONT CAMERA LOW VISIBILITY - CLEAN SCREEN message in the IPC	Dirty or cracked windshield	CLEAN and INSPECT the windshield in front of the camera. REPAIR or REPLACE the windshield as necessary if damage is found.
	Dirt or debris in between the camera and the windshield	CLEAN the area between the front camera and the windshield.
	Camera windshield defrost heater	INSPECT the camera windshield defrost heater for damage and DIAGNOSE any IPMA heater Diagnostic Trouble Codes (DTCs) that are present.
FRONT CAMERA MALFUNCTION - SERVICE REQUIRED message in the IPC	REFER to the Pinpoint Test	GO to Pinpoint Test D
The lane keeping aid and lane keeping alert will not turn off	MyKey® in use	Normal operation.