Symptom Chart - Adaptive Cruise Control

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

Condition	Possible Sources	Actions
The adaptive cruise control is inoperative-without adaptive steering	Refer to the Pinpoint Test	GO to Pinpoint Test C
The adaptive cruise control is inoperative-with adaptive steering	Refer to the Pinpoint Test	GO to Pinpoint Test D
The cruise control switch is inoperative/does not operate correctly-without adaptive steering	Refer to the Pinpoint Test	GO to Pinpoint Test C
The cruise control switch is inoperative/does not operate correctly-with adaptive steering	Refer to the Pinpoint Test	GO to Pinpoint Test D
The adaptive cruise control does not function in rain or snow conditions	Refer to the Pinpoint Test	GO to Pinpoint Test J
"ADAPTIVE CRUISE NOT AVAILABLE SENSOR BLOCKED SEE MANUAL" message in the IPC message center	Refer to the Pinpoint Test	GO to Pinpoint Test J
The adaptive cruise control indicator lamp is never/ always on	Wiring, terminals and connectors PCM IPC	REFER to:INFORMATION CENTER INSTRUMENTATION, MESSAGE CENTER AND WARNING CHIMES .
Unexpected adaptive cruise control braking	CCM Front bumper cover	The adaptive cruise control system can occasionally detect and respond to out-of path vehicles, especially on curves, entry/exit ramps or when changing lanes. CHECK the CCM and front bumper cover for damage. RETEST the adaptive cruise control system.
Lack of adaptive cruise control braking	Front bumper cover CCM CCM bracket alignment or attachment concerns	The adaptive cruise control system may not detect and respond to vehicles carrying out close cut-ins or on tight curves (especially for vehicles on the passenger side) due to limited CCM field of view. CHECK the CCM and front bumper cover for damage. If no damage is observed, CHECK the CCM is properly aligned vertically and horizontally. REFER to: Cruise Control Radar Alignment . RETEST the adaptive cruise control system. CHECK the radar attachments to the bracket for damage, loose grommets or attachments that have come free from the ball stud. This may cause the module to not point parallel to the ground. Incorrect alignment can cause delayed detection. If concerns are present, REPAIR attachments and CHECK for proper radar alignment. REFER to: Cruise Control Radar Alignment . If no damage is observed and bracket attachments are OK, RETEST the adaptive cruise control system.
Adaptive cruise control does not slow the vehicle down until too close to a lead vehicle, does not detect a lead vehicle or vehicle follows closer than the set gap value	Front bumper cover CCM CCM bracket alignment or attachment concerns CCM alignment or attachment concerns	The adaptive cruise control system may not detect and respond to vehicles carrying out close cut-ins or on tight curves (especially for vehicles on the passenger side) due to limited CCM field of view. CHECK the CCM and front bumper cover for damage. If no damage is observed, CHECK the CCM is properly aligned vertically and horizontally. REFER to: Cruise Control Radar Alignment . RETEST the adaptive cruise control system. CHECK the radar attachments to the bracket for damage, loose grommets or attachments that have come free from the ball stud. This may cause the module to not point parallel to the ground. Incorrect alignment can cause delayed detection. If concerns are present, REPAIR attachments and CHECK for proper radar alignment. REFER to: Cruise Control Radar Alignment . If no damage is observed and bracket attachments are OK, RETEST the adaptive cruise control system.
Collision warning alerts in high sensitivity setting occur on bridges	CCM bracket alignment or attachment concerns CCM alignment or attachment concerns	CHECK the radar attachments to the bracket for damage, loose grommets or attachments that have come free from the ball stud. This may cause the module to not point parallel to the ground. Incorrect alignment can cause delayed detection. If concerns are present, REPAIR attachments and CHECK for proper radar alignment. REFER to: Cruise Control Radar Alignment . If no damage is observed and bracket attachments are OK, RETEST the adaptive cruise control system.
Noise during adaptive cruise control braking	Low speeds Brake concern	The driver can detect some noise at low speeds when adaptive cruise control braking occurs. If braking noise continues, REFER to: Brake System .
Vehicle does not remain stationary when driver opens the door or vehicle has stopped for more than 2 minutes with adaptive cruise control activated	EPB fault Door switch fault	DIAGNOSE any EPB concerns. REFER to: Parking Brake . DIAGNOSE any door ajar switch concerns. REFER to: Interior Lighting .
The cruise control cannot set above 105 km/h (65 mph), 113 km/h (70 mph), 121 km/h (75 mph), or 129 km/h (80 mph)	A MyKey ® restricted key is in use and MyKey ® max speed limiter is turned on	VERIFY whether a MyKey ® restricted key is in use. With an admin key, VERIFY if MyKey ® max speed limiter is turned on. REFER to the Owner's Literature. If necessary, VERIFY cruise control normal operation with an admin key.
The cruise control cannot be activated at low speeds	No lead vehicle when adaptive cruise control is active	This is a normal function of the adaptive cruise control system. EXPLAIN the system functions to the customer.
	Blocked, dirty or faulty front camera	CLEAN debris or dirt from camera lens or windshield. CHECK the camera for proper operation. DIAGNOSE any camera-related concerns. REFER to: Lane Keeping System .
	Damaged, blocked or misaligned radar module	CLEAN debris or dirt from the front bumper cover. CHECK bumper cover for any damage and REPAIR or REPLACE the front bumper cover, if necessary. REFER to: Front Bumper Cover . CHECK the radar module for damage or misalignment. REFER to: Cruise Control Radar Alignment .