2021-2025 Jeep/Dodge ADAS Warning Lights TSB S2408000114

Owners of 2021-2025 Jeep Compass and Dodge Durango vehicles may encounter various Advanced Driver Assist System (ADAS) warning messages on their Instrument Panel Cluster (IPC). These messages signal a loss of functionality for critical safety systems like Adaptive Cruise Control (ACC) and Forward Collision Warning (FCW). This issue is addressed in STAR Online Publication Case Number S2408000114 Rev. A, released in May 2025.

Symptoms

Customers may observe specific warning messages displayed on their instrument cluster. These include:

• "ACC Unavailable Service Required"
• "Adaptive Cruise Control (ACC) System Disabled"
• "Forward Collision Warning (FCW) Unavailable Service Required"

If you are seeing a Jeep Compass ADAS warning or a similar message in your Dodge Durango, it indicates that the vehicle's advanced safety features are not operating correctly.

Fault Codes / DTCs

Technicians investigating these ADAS warnings typically find the following Diagnostic Trouble Code (DTC):

• C14A4-00: Sensor Adjustment Required

This DTC points to a problem with the radar sensor's calibration or physical state.

Diagnosis / Trigger Conditions

The Advanced Driver Assist Systems rely heavily on a radar sensor located in the front bumper fascia. The presence of a Jeep Compass ADAS warning or related messages, along with DTC C14A4-00, often suggests a physical issue with this sensor or its mounting.

Diagnosis involves a thorough physical inspection of the radar module. Technicians will verify several key aspects:

• The sensor itself is not damaged, obscured, or out of alignment.
• The module housing is fully seated and secure within its mounting.
• All securing clips are present and undamaged.
• The mounting bracket is not bent or deformed.
• The ACC Module bracket bolts are properly torqued to the specified value of 4 Nm ± 1 Nm.

Misalignment or damage to the bumper mounting bracket, bumper surround, or valence can also cause the radar mounting position to be incorrect, leading to the C14A4-00 DTC.

Important Warnings

It is crucial to understand the correct diagnostic and repair procedure for this issue. The manufacturer explicitly states:

• "Do not replace the sensor for this stored code, clear the DTC after and inspection and recalibrate if needed, and retest the operation."

This means that simply replacing the radar sensor without first inspecting its physical condition and mounting is not the recommended solution and will likely not resolve the underlying problem.

Repair Procedure Summary

The primary repair involves a detailed physical inspection and correction of any identified issues with the radar sensor's mounting or alignment. Technicians will:

1. Inspect the radar sensor, module housing, securing clips, and mounting bracket for any damage, misalignment, or missing components.
2. Ensure the ACC Module bracket bolts are torqued to the correct specification (4 Nm ± 1 Nm).
3. If a physical issue is found and corrected, the Diagnostic Trouble Code C14A4-00 should be cleared.
4. The radar sensor may then require recalibration to ensure accurate operation.
5. Finally, the vehicle's ADAS systems will be retested to confirm proper functionality and that the Jeep Compass ADAS warning no longer appears.

Owner Action

If your 2021-2025 Jeep Compass or Dodge Durango is displaying ADAS warning messages or you suspect an issue with your vehicle's radar sensor, it is recommended to schedule an appointment with an authorized dealership. They have the necessary tools and expertise to perform the detailed inspection, diagnosis, and recalibration outlined in Manufacturer Communication S2408000114.

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Source: NHTSA ID 11018269