Flash: Integrated Trailer Control Module (ITCM) Updates (08-042-25)

Publication date: 2025-02-21
Reference number: 08-042-25

FLASH: INTEGRATED TRAILER CONTROL MODULE (ITCM) UPDATES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 08-042-25, Date of Issue: February 21, 2025

CHRYSLER:	2025 (WS) Grand Wagoneer/Wagoneer
GROUP:	08 - Electrical

VEHICLES AFFECTED

2025 (WS) Grand Wagoneer/Wagoneer

This bulletin applies to vehicles built on or before July 05, 2024 (MDH 0705XX) equipped with Trailer Brake Control (Sales Code XHC).

CUSTOMER SYMPTOM

Customers may comment on the following:

When driving the vehicle, the trailer brake gain screen will pop up in the Instrument Panel Cluster (IPC) for a few seconds (same screen that would pop up if you squeeze the trailer brake manual lever control under the steering wheel), however no activation is made by the driver at all. No additional brake power is applied to the vehicle during the pop up event.

CAUSE

ITCM software updates

REPAIR SUMMARY

This bulletin involves updating the ITCM with the latest available software.

CLAIMS DATA

CLAIMS INFORMATION

Labor Operation No:	Labor Description	Skill Category	Labor Time
18-19-09-92	Integrated Trailer Control Module (ITCM) - Reprogram (0 - Introduction)	6 - Electrical and Body Systems	0.2 Hrs.
Failure Code	CC	Customer Concern

The dealer must use failure code CC with this Technical Service Bulletin.

If the customer's concern matches the SYMPTOM identified in the Technical Service Bulletin, failure code CC is to be used.
When utilizing this failure code, the 3C's (customer's concern, cause and correction) must be provided for processing Technical Service Bulletin flash/reprogramming conditions.

DIAGNOSIS

Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/Service Library, verify all related systems are functioning as designed. If Diagnostic Trouble Codes (DTCs) or symptom conditions, other than the ones listed above are present, record the issues on the repair order and repair as necessary before proceeding further with this bulletin.

If the customer describes any of the symptoms listed above in the customer symptom section, perform the Repair Procedure.

SPECIAL TOOLS/EQUIPMENT

SPECIAL TOOLS INFORMATION

Description	Ref. No.	Notes
wiTECH or Equivalent	-	-

REPAIR PROCEDURE

NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do not allow the charging voltage to climb above 13.5 volts during the flash process.

NOTE: If this flash process is interrupted/aborted, the flash should be restarted.

Reprogram the ITCM with the latest available software. If issues arise when flashing a module using the wiTECH Diagnostic Application, please submit a ticket to the Helpdesk. The helpdesk can be found within the Help menu.
Using wiTECH, perform proxy alignment. This routine is available under the 'Guided Diagnostics' tab found on the home, 'Vehicle View' page of wiTECH.
Clear all DTCs that may have been set in any module due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow them to be cleared.

POLICY

Reimbursable within the provisions of the warranty.

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.