2024 Jeep Compass ACC Module Update TSB 08-161-26

Owners of the 2024 Jeep Compass may experience issues with their Adaptive Cruise Control (ACC) system, indicated by a Malfunction Indicator Lamp (MIL) illumination and specific diagnostic trouble codes. Technical Service Bulletin (TSB) 08-161-26, issued on April 16, 2026, provides a solution for these concerns, primarily involving a software update for the ACC module. This bulletin applies specifically to vehicles equipped with Adaptive Cruise Control W/Stop & Go (Sales Code NHZ) in the North America market. This Jeep Compass ACC module update aims to resolve the underlying software cause.

Symptoms

If your 2024 Jeep Compass is affected, you might notice one or more of the following symptoms related to the ACC system:

• Malfunction Indicator Lamp (MIL) illumination: The MIL, commonly known as the check engine light, may turn on.
• Diagnostic Trouble Code (DTC) C14A4-00: This specific fault code, indicating a "Sensor Adjustment Required," will be stored in the vehicle's system.
• Instrument Panel Cluster (IPC) message: You may see the message "ACC/FCW Unavailable, Service Required" displayed on your dashboard.

These symptoms collectively point towards a software-related problem within the Adaptive Cruise Control module.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this issue is:

Code	Description	Module
C14A4-00	Sensor Adjustment Required	ACC

Diagnosis / Trigger Conditions

To accurately diagnose this issue, technicians will use a wiTECH scan tool. They will access the appropriate Diagnostic Procedures available in DealerCONNECT/Service Library to verify that all related systems are functioning as designed. If any DTCs or symptom conditions other than those listed in this bulletin are present, they must be recorded and addressed before proceeding with the ACC module update. The presence of the described symptoms or the C14A4-00 DTC is the trigger for performing the repair procedure outlined in TSB 08-161-26.

Repair Procedure Summary

The Jeep Compass ACC module update involves a multi-step process performed by a qualified technician:

1. ACC Module Reprogramming: The technician will reprogram the Adaptive Cruise Control (ACC) module with the latest available software using the wiTECH Diagnostic Application. If any issues arise during the flashing process, a ticket will be submitted to the Helpdesk for assistance.
2. DTC Clearing: After the reprogramming is complete, the wiTECH application will automatically present any DTCs that may have been set in various modules due to the reprogramming. The technician will then clear all these codes from the vehicle's system.
3. ACC DASM Calibration: A crucial step involves performing an ACC DASM Calibration. This procedure ensures the ACC system's sensors are correctly adjusted and functioning. Detailed service procedures for this calibration can be found in the DealerCONNECT/Service Library under: Service Info > 08 - Electrical / 8E - Electronic Control Modules / Module, Adaptive Cruise Control (ACC) / Module Programming.

Required Tools or Parts

Technicians will require the following specialized diagnostic equipment to perform this repair:

• wiTECH or Equivalent: This diagnostic tool is essential for reprogramming the ACC module, clearing DTCs, and performing the necessary calibration.

Important Warranty Information

This repair, as outlined in TSB 08-161-26, is reimbursable within the provisions of the vehicle's warranty. Owners should not incur any costs for this software update and calibration.

What Owners Should Do

If you own a 2024 Jeep Compass equipped with Adaptive Cruise Control W/Stop & Go and are experiencing any of the described symptoms, such as the MIL illumination, DTC C14A4-00, or the "ACC/FCW Unavailable, Service Required" message, you should contact your authorized Jeep dealership. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 08-161-26 for the Jeep Compass ACC module update. They will be able to diagnose the issue and perform the necessary software update and calibration.

NHTSA ID: 11031441