2023-2025 Jeep Wrangler Gladiator TBM Software Update

Stellantis has released Technical Service Bulletin (TSB) 08-155-25, providing information on a Firmware Over The Air (FOTA) update for the Global Telematics Box Module (TBM). This update applies to 2023-2025 Jeep Wrangler (JL) and 2023-2025 Jeep Gladiator (JT) vehicles. The primary purpose of this TSB is to inform service technicians and owners about the process for this software enhancement, which activates the Active Cabin Ventilation (ACV) feature.

This TSB specifically targets vehicles built on or before May 05, 2025 (MDH 0505XX) that are equipped with the Global Telematics Box Module (TBM), identified by Sales Code RDG. The Jeep Wrangler TBM FOTA update is a significant enhancement, bringing the TBM software to version 5.53 from previous versions like 5.15, 5.41, or 5.43.

Understanding the TBM FOTA Update

This TSB describes a software enhancement rather than a repair for a specific fault. The update is delivered wirelessly, known as Firmware Over The Air (FOTA), directly to your vehicle's Global Telematics Box Module (TBM). The TBM is a crucial component within your vehicle's electrical system, managing various telematics functions.

The update process is designed to be convenient for owners, utilizing the vehicle's built-in cellular modem for delivery. The national launch for this Jeep Wrangler TBM FOTA update was expected to begin on April 14, 2025, with updates rolling out in phases across the U.S. and Canada.

New Feature: Active Cabin Ventilation (ACV)

The core benefit of this TBM software update is the enablement of the Active Cabin Ventilation (ACV) feature. While the bulletin does not provide extensive details on ACV's functionality, it signifies an improvement in the vehicle's climate control or air circulation capabilities.

How the Update is Delivered and Notified

Owners of affected 2023-2025 Jeep Wrangler and Gladiator vehicles will receive a notification directly on their Uconnect radio screen when new software is available. This notification will alert you to the pending update. The exact message you might see is: "New software and features are ready for your Uconnect system. Backup Camera, Radio, SOS and several driving assistance features will be unavailable during the update."

Upon seeing this message, you will have the option to either initiate the update immediately or schedule it for a later time that is more convenient. It's important to note that while you can defer the update, there is no option to decline it indefinitely; the update must eventually be performed to ensure your vehicle's systems are current.

Important Warnings for Owners

This Technical Service Bulletin 08-155-25 is classified as