2023 Jeep Compass ACC/FCW Unavailable TSB 08-160-26

Owners of 2023 Jeep Compass vehicles equipped with Adaptive Cruise Control (ACC) W/Stop & Go (Sales Code NHZ) may experience issues with their ACC and Forward Collision Warning (FCW) systems. This can manifest as a Malfunction Indicator Lamp (MIL) illumination and specific error messages.

This bulletin, TSB 08-160-26, issued on April 16, 2026, applies to the North America market and outlines a software update for the ACC module to resolve these concerns.

Symptoms

If your 2023 Jeep Compass is affected, you may notice one or more of the following symptoms:

• Illumination of the Malfunction Indicator Lamp (MIL).
• The vehicle may set a Diagnostic Trouble Code (DTC) C14A4-00, indicating a "Sensor Adjustment Required" fault.
• A message displayed in the Instrument Panel Cluster (IPC) stating, "ACC/FCW Unavailable, Service Required."

These symptoms collectively point to an issue with the Adaptive Cruise Control system, leading to the 2023 Jeep Compass ACC/FCW Unavailable condition.

Fault Codes / DTCs

The primary Diagnostic Trouble Code (DTC) associated with this issue is:

Code	Description
C14A4-00	Sensor Adjustment Required

Diagnosis / Trigger Conditions

To diagnose this issue, a technician will use a scan tool like wiTECH to verify the presence of the DTC C14A4-00 or the customer-reported symptoms. If other DTCs or symptoms are present, they should be addressed first. The repair procedure is specifically for vehicles exhibiting the MIL, DTC C14A4-00, or the "ACC/FCW Unavailable, Service Required" message.

Repair Procedure Summary

The resolution for the 2023 Jeep Compass ACC/FCW Unavailable condition involves updating and calibrating the Adaptive Cruise Control module. The general steps are:

1. Reprogramming the ACC Module: The technician will reprogram the ACC module with the latest available software using the wiTECH Diagnostic Application. If any issues occur during the flashing process, a ticket should be submitted to the Helpdesk.
2. Clearing DTCs: After reprogramming, any Diagnostic Trouble Codes that may have been set in various modules will be cleared. The wiTECH application automatically presents all DTCs for clearing.
3. Performing ACC DASM Calibration: A Digital Adaptive Speedometer Module (DASM) calibration must be performed. Detailed instructions for this procedure are available 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

To perform this service, technicians will require a wiTECH diagnostic tool or an equivalent system capable of reprogramming and calibrating vehicle modules.

Important Warnings

It is crucial for owners to understand that this bulletin, TSB 08-160-26, is provided as technical information for dealerships and is not an authorization for repair. Any repairs performed under this bulletin are reimbursable within the provisions of the vehicle's warranty.

Owner Action

If your 2023 Jeep Compass is displaying a Malfunction Indicator Lamp, showing DTC C14A4-00, or presenting the message "ACC/FCW Unavailable, Service Required," you should schedule an appointment with an authorized Jeep dealership. The repair involves a software update and calibration of the ACC module, which typically takes about 0.8 hours of labor and is expected to be covered under warranty.

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Source: NHTSA ID 11031440