2025 Jeep Compass ACC Software Update TSB 08-154-26

Owners of the 2025 Jeep Compass equipped with Adaptive Cruise Control W/Stop & Go (Sales Code NZH) may experience issues related to the Adaptive Cruise Control (ACC) system. These concerns are addressed by Technical Service Bulletin (TSB) 08-154-26, which outlines a software update for the ACC module.

This bulletin, also identified as revision 08-159-24 REV. A and Rapid Service Update (RSU) 24-103, supersedes an earlier version (TSB 08-159-24 REV. A dated July 18, 2024). It applies to vehicles sold in various markets, including North America, South America, and Europe.

Symptoms

If your 2025 Jeep Compass is affected, you might notice one or more of the following symptoms:

• A Malfunction Indicator Lamp (MIL) illumination on the dashboard.
• The message "ACC/FCW Unavailable, Service Required" appearing in the Instrument Panel Cluster (IPC).
• An indication of a sharp curve when changing lanes without activating the turn signal.
• Advanced Driver Assistance Systems (ADAS) becoming disabled when changing lanes without activating the turn signal.

Fault Codes / DTCs

Technicians investigating these symptoms will likely find a specific Diagnostic Trouble Code (DTC) stored in the vehicle's system:

This DTC, C14A4-00, directly points to a sensor adjustment requirement within the Adaptive Cruise Control system, which is resolved through a software update.

Diagnosis

To diagnose the issue, a technician will use a wiTECH scan tool to verify that all related systems are functioning correctly. If any DTCs or symptom conditions other than those listed in this bulletin are present, they will be addressed before proceeding with the TSB repair. If the customer describes the specific symptoms or the DTC C14A4-00 is found, the repair procedure outlined in TSB 08-154-26 will be performed.

Repair Procedure Summary

The repair for the 2025 Jeep Compass ACC software update involves reprogramming the Adaptive Cruise Control module with the latest available software. This process requires specific steps to ensure proper execution:

1. Prepare the Vehicle: A battery charger must be connected to maintain a 12-volt system voltage throughout the process. This prevents interruptions during the flash, which could cause further issues.
2. Reprogramming: The ACC module is reprogrammed using the wiTECH Diagnostic Application. If any issues arise during this step, the technician will submit a ticket to the Helpdesk for assistance.
3. Clear DTCs: After the software flash, all Diagnostic Trouble Codes that may have been set in any module due to the reprogramming will be cleared using the wiTECH application.
4. Calibration: The technician will navigate to the ACC module's