Technical Service Bulletin (TSB)
Global Telematics Box Module (TBM) Firmware Over The
Air (FOTA) Update From R5N to R5T Software Level
REFERENCE:

TSB: 08-339-25
GROUP: 08 - Electrical

Date:

October 9, 2025

VEHICLES
AFFECTED:

2025 - 2026 (DT) RAM 1500 Pickup
This bulletin applies to vehicles equipped with Global Telematics Box
Module (TBM) (Sales Code RDG).

REVISION: —

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies
to the North America
market.
CUSTOMER
SYMPTOM:

The customer may comment on the following:
● Radio screen displays "Uconnect Box Error" with the message "Uconnect Box requires service. Please visit
an authorized dealer" Fig. 1. Rear View Camera (RVC) functions normally.

CAUSE:

Issue With Antenna Startup Time

Fig. 1
Uconnect Error Message
REPAIR SUMMARY:
This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the
service technician an overview of the steps a customer will need to take to complete the update. The TBM
software will be updated from R5N to R5T software level.
NOTE: National launch for this FOTA update is expected to begin: September 09, 2025.

B08 FSAR-TSB-6322

-2-

DISCUSSION:
Vehicles sold in the U.S. and Canada can now receive software updates “over-the-air”. Updates to software
will occur in a phased roll-out. The software is updated through a built in cellular modem in the vehicle.
Customers will see a notification on their radio screen when new software is available for their radio Fig. 2.
The owner will have the option to update the radio or schedule the update for later. There is not an option to
decline the update indefinitely, the update must be performed.
NOTE: This is an Information Only Technical Service Bulletin to inform the dealer how the FOTA
update is performed. This document does not contain a LOP for reimbursement.

Fig. 2
Software Acceptance Screen
1. The vehicle needs to be in ‘Park’. The ignition needs to be in the off position.
2. If the customer selects “Update Now” Fig. 3 they can shut off the vehicle and leave. The update will be
completed automatically.
NOTE: This step may take several minutes to complete.
3. Upon completion of update, the radio will display a confirmation message Fig. 3.

Fig. 3
Software Update Confirmation Screen

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B08 FSAR-TSB-6322

POLICY:
Information Only.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.