2026 Jeep Compass ACC Module Update for DTC C14A4-00

Jeep has issued Technical Service Bulletin (TSB) 08-158-26 to address issues with the Adaptive Cruise Control (ACC) module in certain 2026 Jeep Compass vehicles. This bulletin specifically targets vehicles equipped with Adaptive Cruise Control W/Stop & Go (Sales Code NHZ) that were built on or before May 18, 2026.

This service action is crucial for owners experiencing specific warning messages or diagnostic trouble codes related to their vehicle's adaptive cruise control system. The 2026 Jeep Compass adaptive cruise control fault can impact driving assistance features.

Symptoms

Owners of affected 2026 Jeep Compass vehicles may notice a Malfunction Indicator Lamp (MIL) illuminated on their dashboard. This indicates a potential issue with one of the vehicle's systems.

In addition to the MIL, drivers might also see a specific message displayed in the Instrument Panel Cluster (IPC). The message often reported is "ACC/FCW Unavailable, Service Required". This directly points to a problem with the Adaptive Cruise Control and Forward Collision Warning systems.

Fault Codes / DTCs

The primary diagnostic trouble code (DTC) associated with this 2026 Jeep Compass adaptive cruise control fault is:

Code	Description
C14A4-00	Sensor Adjustment Required

This DTC indicates that the ACC sensor requires adjustment, which is typically resolved through a software update and calibration.

Diagnosis and Trigger Conditions

To diagnose this issue, technicians will use a scan tool, such as wiTECH, along with diagnostic procedures available in DealerCONNECT/Service Library. The goal is to verify that all related systems are functioning correctly.

If any DTCs or symptom conditions other than those specifically listed in TSB 08-158-26 are present, they should be recorded and addressed separately. If the customer reports the symptoms described, the repair procedure outlined in this bulletin should be followed.

Repair Procedure Summary

The repair for the 2026 Jeep Compass adaptive cruise control fault involves a software update and calibration of the ACC module. This process ensures the module operates with the latest programming.

1. Reprogramming the ACC Module: The first step is to reprogram the Adaptive Cruise Control (ACC) module using the latest available software via the wiTECH Diagnostic Application. If any issues occur during the flashing process, technicians are advised to submit a ticket to the Helpdesk.
2. Clearing DTCs: After reprogramming, any diagnostic trouble codes that may have been set in any modules will need to be cleared. The wiTECH application is designed to automatically present all DTCs after the flash, allowing them to be cleared efficiently.
3. Perform ACC DASM Calibration: A crucial final step is to perform an ACC DASM (Driver Assistance System Module) Calibration. Technicians should refer to the detailed service procedures found in DealerCONNECT/Service Library under the path: Service Info > 08 - Electrical / 8E - Electronic Control Modules / Module, Adaptive Cruise Control (ACC) / Module Programming.

This repair, identified by Labor Operation Number 18-80-95-9C and Failure Code ZZ, is estimated to take 0.8 hours of labor.

Required Tools or Parts

The primary tool required for this repair is the wiTECH diagnostic system or an equivalent. This tool is essential for reprogramming the ACC module and performing the necessary calibrations.

What Owners Should Know

This service action, TSB 08-158-26, is reimbursable within the provisions of the warranty. Owners experiencing these symptoms should schedule an appointment with an authorized Jeep dealership to have their vehicle inspected and the ACC module updated.

Source: NHTSA ID 11031438