2024-2025 Jeep Compass Park Brake Warning TSB

Owners of 2024-2025 Jeep Compass vehicles may encounter an illuminated "MP park brake light on" warning or a "service park brake message" displayed on the instrument cluster. This issue, identified in manufacturer communication 11030153, points to a specific wiring harness problem that can trigger these alerts and related diagnostic trouble codes.

Addressing a "Jeep Compass park brake warning" promptly is important for maintaining vehicle safety and functionality. This technical service bulletin (TSB) outlines the diagnostic steps and repair considerations for technicians to resolve the underlying cause of these warnings.

Symptoms

Drivers may observe one or both of the following messages or indicators:

• An illuminated "MP park brake light on" warning light on the dashboard.
• A "service park brake message" displayed on the vehicle's cluster screen.

These visual alerts indicate a potential malfunction within the electronic park brake system, requiring attention. The presence of a "Jeep Compass park brake warning" suggests that the system may not be operating correctly.

Fault Codes / DTCs

When diagnosing this issue, technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the vehicle's system:

Code	Description
C10D0	Electronic Park Brake System Failure
C10ED	Electronic Park Brake Switch LED
C10CD	Electronic Park Brake Switch - General Electrical Failure 1

These codes specifically point to various failures or electrical issues within the electronic park brake system or its associated switch.

Diagnosis and Trigger Conditions

The manufacturer communication highlights a specific diagnostic path for the "Jeep Compass park brake warning". Technicians are advised to perform the following checks:

1. Park Brake Switch Connection: Verify that there is no loose connection on the Park Brake Switch. A secure connection is crucial for proper operation.
2. Connector D3863A Inspection: Carefully inspect connector D3863A for any damage, paying special attention to circuits D497 and B65. These circuits are critical for the park brake system's communication and power.

Crucially, there is a reported issue where the wiring harness originating from the Antilock Brake System (ABS) is being damaged by a Transmission Control Module (TCM) bracket. This physical abrasion can lead to intermittent or complete failure of the park brake system, triggering the warnings and DTCs.

Important Warnings

Technicians are provided with a critical instruction regarding this issue:

• "If there is an issue found on the harness, DO NOT replace the Park Brake Switch."

This warning emphasizes that if the harness damage is identified as the root cause, replacing the park brake switch (Part Number 6ZM50TRMAS) will not resolve the problem and would be an unnecessary repair. The focus must be on repairing the damaged harness.

Repair Procedure Summary

Based on the diagnostic findings, the repair procedure follows two main paths:

1. Harness Repair: If damage to the harness from the Antilock Brake System (ABS) due to contact with the TCM bracket is confirmed, the harness must be repaired. Detailed repair instructions for this procedure are documented in service information library (SOL) document S2508000069 3.
2. Park Brake Switch Replacement (if harness is undamaged): If no issues are found with the harness or its connections, and the problem persists, the Park Brake Switch (Part Number 6ZM50TRMAS) may need to be replaced. In such cases, the replaced part should be sent to QEC (Quality Engineering Center) for further analysis.

Owner Action

If you own a 2024-2025 Jeep Compass and are experiencing a "Jeep Compass park brake warning" or seeing the "MP park brake light on" or "service park brake message", it is recommended to schedule an appointment with an authorized Jeep dealership. Their trained technicians can accurately diagnose the issue by checking for the specific DTCs (C10D0, C10ED, C10CD) and inspecting the wiring harness and park brake switch as outlined in manufacturer communication 11030153. Early diagnosis and repair will ensure the proper functioning of your vehicle's park brake system.

Source: NHTSA ID 11030153