Symptom Chart: Adaptive Cruise Control

WARNING: This page is about a different car, the 2017 Ford F-150. 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	Actions
The ACC is inoperative	Refer to Pinpoint Tests .	GO to Pinpoint Test A
The cruise control switch is inoperative/does not operate correctly	Refer to Pinpoint Tests .	GO to Pinpoint Test A
The ACC does not function in rain or snow conditions	Refer to Pinpoint Tests .	GO to Pinpoint Test G
ADAPTIVE CRUISE NOT AVAILABLE SENSOR BLOCKED SEE MANUAL message in the IPC message center	Refer to Pinpoint Tests .	GO to Pinpoint Test G
The ACC indicator lamp is never/ always on	Wiring, terminals and connectors PCM IPC	REFER to: Instrumentation, Message Center and Warning Chimes .
Unexpected ACC braking	CCM Front bumper cover	The ACC 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 ACC system.
Late or lack of ACC braking	CCM Front bumper cover CCM bracket alignment concerns CCM alignment or attachment concerns	The ACC 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, 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 ACC system.
The ACC 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	CCM Front bumper cover CCM bracket alignment concerns CCM alignment or attachment concerns	The ACC 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, 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 ACC system.
Collision warning alerts in high sensitivity setting occur on bridges	CCM bracket alignment 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 ACC system.
Noise during ACC braking	Low speeds Brake concern	The driver can detect some noise at low speeds when ACC braking occurs. If braking noise continues, REFER to: Brake System .
The cruise control cannot set above 100 kmh (65 mph), 110 kmh (70 mph), 120 kmh (75 mph), or 130 kmh (80 mph)	A MyKey ® restricted key is in use and MyKey ® max speed limiter is turned on	VERIFY 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.