2018-2026 Jeep Wrangler Power Top Unresponsive TSB S2408000024

Symptoms of an Unresponsive Power Top

Owners of 2018-2026 Jeep Wrangler (JL) vehicles may experience an inoperative power top system. The primary symptom is the "Power Top Switch Unresponsive, Full Retractable Sky Roof Does Not Open or Close." When the switches are pressed, the power top makes no movement, indicating a failure in its operation.

Diagnosis and Trigger Conditions

When a Jeep Wrangler power top unresponsive condition occurs, technicians may observe that the power top's "Express Mode" has stopped functioning. This often points to a need for a relearn or calibration procedure for the power top system. Diagnostic Trouble Codes (DTCs) may or may not be present in the Power Top Control Module (PTCM) when this issue arises.

Important Warnings for Calibration

During the power top calibration process, specific instructions must be followed carefully to ensure success and prevent the procedure from being aborted:

• "Do not release the button until after step 5" of the calibration procedure. Releasing the button prematurely can cause the process to fail.
• "If the power top close switch is released during power top motion, the calibration will be aborted." This emphasizes the importance of continuous button pressure throughout the cycle.
• If the calibration procedure fails, it is crucial to "check, diagnose and repair any related DTCS" before attempting the calibration again.

Repair Procedure Summary

Manufacturer communication S2408000024 Rev. B outlines a calibration procedure to address an unresponsive power top. This calibration should be performed before considering any switch or component replacements.

First, ensure the engine is running and the battery voltage is between 11.0 and 16.0 volts. If the power top is currently in the fully closed position, it might be possible to program it using just the switch. However, if the top is in any other position, a diagnostic scan tool must be used to perform the calibration.

The detailed steps for calibration involve:

1. Using a diagnostic scan tool to erase any existing Diagnostic Trouble Codes (DTCs) from the Power Top Control Module (PTCM).
2. Confirming that the power top is in the fully closed position. If it cannot be closed via the switch, the calibration must be initiated through the diagnostic scan tool.
3. Pushing and holding the power top close switch for 10 seconds. It is critical not to release the button during this step.
4. Continuing to hold the power top close button while the top cycles through its full open and then full close positions.
5. Releasing the close button only after the power top has completely stopped in the full closed position.
6. Finally, using the scan tool, perform an ECU Reset on the PTCM via the Guided Diagnostic tab, and then clear all DTCs. After these steps, the power top should be reset and ready for use.

Owner Action

If you own a 2018-2026 Jeep Wrangler and are experiencing a Jeep Wrangler power top unresponsive condition, it is recommended to schedule a service appointment with your authorized Jeep dealership. While this technical service bulletin provides guidance for technicians, it does not authorize warranty repairs or guarantee a free fix. The calibration procedure often requires specialized diagnostic tools and expertise to perform correctly.

Source: NHTSA manufacturer communication S2408000024 Rev. B.