2022 Jeep Compass ACC Module Update TSB 08-159-26

Symptoms of the ACC Module Issue

Owners of the 2022 Jeep Compass equipped with Adaptive Cruise Control (ACC) with Stop & Go may experience specific indicators of a problem with the ACC module. The primary symptom is the illumination of the Malfunction Indicator Lamp (MIL) on the dashboard. This warning light signals a general issue within the vehicle's systems.

In addition to the MIL, drivers might also see a specific message displayed in the Instrument Panel Cluster (IPC). This message, "ACC/FCW Unavailable, Service Required", directly indicates a malfunction with the Adaptive Cruise Control and Forward Collision Warning systems. These symptoms point to the need for a software update to the ACC module.

Diagnostic Trouble Codes (DTCs)

When the Adaptive Cruise Control module encounters a fault, it will typically store a Diagnostic Trouble Code (DTC) in the vehicle's computer system. For the issues described in Technical Service Bulletin 08-159-26, the specific DTC that may be set is:

• C14A4-00 - Sensor Adjustment Required

This code indicates that the ACC sensor requires adjustment, which is often resolved through software updates and calibration rather than physical replacement. If your 2022 Jeep Compass exhibits these symptoms or DTC C14A4-00, a service visit is recommended.

Diagnosis and Trigger Conditions

Before proceeding with any repairs, technicians will use a scan tool, such as wiTECH, to verify the vehicle's systems. They will check for any DTCs or other symptom conditions that might be present. It's crucial to record any issues found on the repair order.

The repair procedure outlined in TSB 08-159-26 is specifically for vehicles where the customer reports the Malfunction Indicator Lamp (MIL) illumination, the DTC C14A4-00, or the "ACC/FCW Unavailable, Service Required" message. If other DTCs or symptoms are present, they should be addressed first according to standard diagnostic procedures before applying this bulletin. This ensures that the 2022 Jeep Compass ACC module update correctly resolves the identified problem.

Repair Procedure Summary

The resolution for the Adaptive Cruise Control module issues in the 2022 Jeep Compass involves a software update and calibration. This process is detailed in TSB 08-159-26 and includes the following steps:

1. ACC Module Reprogramming: The technician will reprogram the ACC module with the latest available software. This is a critical step to address the underlying software-related cause of the malfunction. If any issues arise during this flashing process, the technician is instructed to contact the Helpdesk for assistance.
2. Clear Diagnostic Trouble Codes: After the reprogramming is complete, any Diagnostic Trouble Codes (DTCs) that may have been set in various modules due to the reprogramming process must be cleared. The wiTECH application is designed to automatically present all DTCs after the flash, allowing for easy clearing.
3. ACC DASM Calibration: Following the software update and DTC clearing, an ACC Driver Assistance System Module (DASM) Calibration must be performed. This calibration ensures that the ACC system functions correctly with the new software. Technicians can find detailed service procedures for this calibration in the DealerCONNECT/Service Library.

This comprehensive approach ensures that the 2022 Jeep Compass ACC module update is fully integrated and operational.

Required Tools or Parts

To perform the Adaptive Cruise Control module update and calibration as described in TSB 08-159-26, technicians will need specific diagnostic equipment. The primary tool required is:

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

No specific replacement parts are listed as required for this particular service bulletin, as the resolution focuses on software updates and calibration.

Important Warnings

Owners should be aware that this Technical Service Bulletin is provided as technical information for dealership service departments. It is not an authorization for repair in itself. Any work performed under this bulletin is reimbursable within the provisions of the vehicle's warranty.

What Owners Should Do

If you own a 2022 Jeep Compass and are experiencing a Malfunction Indicator Lamp (MIL) illumination, the Diagnostic Trouble Code C14A4-00, or the message "ACC/FCW Unavailable, Service Required", it is recommended to contact your authorized Jeep dealership. Inform them about the symptoms you are observing. The dealership service department will be able to diagnose the issue and apply the necessary software update and calibration to your ACC module as outlined in TSB 08-159-26. This service will ensure your Adaptive Cruise Control system functions correctly.

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Source: NHTSA ID: 11031439