Flash: Transmission Control Module (TCM) Updates (21-013-21 REV. A)

WARNING: This page is about the Gladiator 80th Anniversary Edition, 3.0L Eng VIN M, Full Time T/Case Control, which is a different variant/trim than selected.

Publication date: 2024-07-17
Reference number: 21-013-21 REV. A
Supersedes refnos: 21-013-21

FLASH: TRANSMISSION CONTROL MODULE (TCM) UPDATES

TECHNICAL SERVICE BULLETIN

Reference Number(s): 21-013-21 REV. A, Date of Issue: July 17, 2024

CHRYSLER:	2021 (JT) Jeep Gladiator
GROUP:	21 - Transmission and Transfer Case

Superceded Bulletin(s): 21-013-21, Date of Issue: March 30, 2021

NOTE: 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.

NOTE: This bulletin supersedes Technical Service Bulletin (TSB) 21-013-21, date of issue March 30, 2021, which should be removed from your files. All revisions are highlighted with **asterisks** and include converting to an Rapid Response Transmittal (RRT), Update symptom, inspection procedure and inspection LOP.
**This Technical Service Bulletin (TSB) has also been released as a Rapid Response Transmittal (RRT) 21-095, date of issue July 17, 2021. All applicable Un-Sold RRT VINs have been loaded. To verify this RRT service action is applicable to the Un-Sold vehicle, use VIP or perform a VIN search in DealerCONNECT/Service Library. This RRT will expire 18 months after the date of issue.**

OVERVIEW

This bulletin involves reprogramming the TCM with the latest available software.

MODELS

MODELS CHART

2021

(JT)

Jeep Gladiator

NOTE: This bulletin applies to vehicles within the following markets/countries: North America and EMEA.

NOTE: This bulletin applies to vehicles built on or before January 19, 2021 (MDH 0119XX), equipped with a 3.0L V6 Turbo Diesel Engine W/ESS G3 (Sales Code EXJ) and 8-Speed Automatic 8HP75 Transmission (Sales Code DFV).

SYMPTOM/CONDITION

Customers may experience the following on a vehicle with less than **644 km (400 miles)** on the odometer:

A Malfunction Indicator Lamp (MIL) event or failure with no Diagnostic Trouble Codes (DTCs) and the vehicle has less than **644 km (400 miles)** on the odometer indicates it is likely the vehicle has experienced an unintentional code clear event.

NOTE: Do not use this software update if vehicle odometer has over **644 km (400 miles).**

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 symptom conditions, other than the ones listed are present, record the issues on the repair order and repair as necessary before proceeding further with this bulletin.

If a customer's VIN is listed in VIP or your RRT VIN list, perform the repair. If any vehicle not on the VIN list exhibits the symptom/condition, perform the repair.

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.

** Is the vehicle on the RRT VIN list?
- YES>>> Proceed to Step 2 .
- NO>>> Proceed to Step 3 .
Does the TCM have the latest software already installed?
- YES>>> This bulletin has been completed, use inspect LOP (18-19-05-PY) to close the active RRT.
- NO>>> Proceed to Step 3.* *
Reprogram the TCM with the latest available software. Detailed instructions for flashing control modules using the wiTECH Diagnostic Application are available by selecting the application's "HELP" tab.
Clear any DTCs that may have been set in any modules 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.

TIME ALLOWANCE

TIME ALLOWANCE CHART

Labor Operation No:	Description	Skill Category	Amount
**18-19-05-PY	Module, Transmission Control (TCM) - Inspect (0 - Introduction)	2 - Automatic Transmission	0.2 Hrs.**
18-19-05-PU	Module, Transmission Control (TCM) - Inspect and Reprogram (0 - Introduction)	2 - Automatic Transmission	0.2 Hrs.

NOTE: The expected completion time for the flash download portion of this procedure is approximately 4 minutes. Actual flash download times may be affected by vehicle connection and network capabilities.

FAILURE CODE

**The dealer must choose which failure code to use depending on if this is a Rapid Response Transmittal (RRT) or Service Bulletin.

The "RF" failure code is required for essential module flash/reprogramming and can only be used after confirmation that the VIN is included on the RRT.
The failure code "RF" (Required Flash) can no longer be used on Service Bulletin flashes. The "RF" failure code must be used on an RRT.
If the customer's concern matches the SYMPTOM/CONDITION identified in the Service Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C's must be supplied.

FAILURE CODE CHART

RF	Required Flash - RRT
CC	Customer Concern**