2024 Jeep Compass ACC Module MIL TSB 08-136-24

Owners of certain 2024 Jeep Compass vehicles may notice a "Malfunction Indicator Lamp (MIL) illumination" on their dashboard. This issue is often accompanied by a specific diagnostic trouble code (DTC) related to the Adaptive Cruise Control (ACC) system. This technical service bulletin, TSB 08-136-24, outlines a software update to address this concern.

This bulletin applies to 2024 Jeep Compass vehicles built on or before April 15, 2024, that are equipped with specific safety features. These features include Full Speed FWD Collision Warn Plus (Sales Codes LSU), Front Fascia Parts Module (Sales Code X8W), and either Pedestrian/Cyclist Emergency Braking (Sales Code LST) or Drowsy Driver Detection (Sales Code XNM).

Symptoms

The primary symptom reported by owners is a "Malfunction Indicator Lamp (MIL) illumination" on the instrument cluster. This warning light indicates that the vehicle's computer has detected a fault within one of its systems.

Fault Codes / DTCs

Upon investigation, technicians may find the following diagnostic trouble code stored in the vehicle's system:

Code	Description
C0063-9A	Yaw Rate Sensor - Component Or System Operating Conditions

This DTC specifically points to an issue with the yaw rate sensor, which is a critical component for the proper functioning of the ACC system.

Diagnosis

To diagnose this issue, technicians will use a Scan Tool (wiTECH) to verify that all related systems are functioning correctly. If the 2024 Jeep Compass ACC module MIL symptom is present and the C0063-9A DTC is found, the repair procedure outlined in TSB 08-136-24 should be followed.

Repair Procedure Summary

The resolution for the 2024 Jeep Compass ACC module MIL and DTC C0063-9A involves updating the software of the Adaptive Cruise Control (ACC) module. The general steps for this procedure are:

1. Prepare the Vehicle: Connect a battery charger to the vehicle to maintain a stable 12-volt system voltage throughout the process. This is crucial to prevent interruptions during the software flash.
2. Reprogram the ACC Module: Use the wiTECH Diagnostic Application to reprogram the ACC module with the latest available software. If any issues arise during this flash process, technicians are instructed to submit a ticket to the Helpdesk via the wiTECH application.
3. Clear DTCs: After the reprogramming is complete, clear any diagnostic trouble codes that may have been set in any modules due to the reprogramming process. The wiTECH application will automatically display all DTCs and allow them to be cleared.

Important Warnings

• Battery Voltage: It is essential to install a battery charger to maintain a 12-volt system voltage during the software update. Failure to do so could lead to an interrupted flash process.
• Interrupted Flash: If the flash process is interrupted or aborted for any reason, it must be restarted from the beginning to ensure proper module functionality.
• Failure Code for Claims: Dealers must use failure code "CC" (Customer Concern) when processing claims related to this Technical Service Bulletin TSB 08-136-24. This code is specifically for instances where the customer's concern matches the symptom identified in the bulletin.

Required Tools or Parts

The primary tool required for this repair is the wiTECH diagnostic system or an equivalent diagnostic tool capable of performing module reprogramming.

Owner Action

If you own a 2024 Jeep Compass and experience a "Malfunction Indicator Lamp (MIL) illumination" or suspect an issue with your Adaptive Cruise Control system, it is recommended to contact your authorized Jeep dealership. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin TSB 08-136-24. The software update is reimbursable under warranty provisions.

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Source: NHTSA ID: 11001316