NUMBER:
GROUP:
DATE:

21-019-16
Transmission and
Transfer Case
June 17, 2016

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.

THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-023-15 REV. B, DATED
AUGUST 21, 2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. ALL
REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE NEW MODEL,
UPDATES FOR VEHICLES WITH 3.6L ENGINE, SYMPTOM CONDITIONS AND LABOR
OPS.
FOR HELP WITH USING wiTECH FOR ECU FLASH REPROGRAMMING, CLICK ON
THE APPLICATION’S “HELP” TAB.
THE wiTECH SOFTWARE IS REQUIRED TO BE AT THE LATEST RELEASE BEFORE
PERFORMING THIS PROCEDURE.
SUBJECT:
Flash: Transmission Shift And Drivability Enhancements
OVERVIEW:
This bulletin involves reprogramming of the Transmission Control Module (TCM) with the
latest available software.
MODELS:
**2015

(LA)

Dodge Challenger**

2015

(LD)

Dodge Charger

2015

(LX)

Chrysler 300

NOTE: This bulletin applies to vehicles within the following markets/countries:
NAFTA, LATAM, EMEA, APAC.
NOTE: **This bulletin applies to vehicles equipped with 3.6L V6 24V VVT Engine
(Sales Code ERB) equipped with 8-SPD Auto 845RE Trans (Sales Code DFL)
or equipped with 8-SPD Auto 8HP45 Trans (Sales Code DFG) or equipped
with 5-Speed Auto W5A580 Transmission (Sales Code DGJ).**
NOTE: This bulletin applies to LX vehicles equipped with 3.0L V6 24V VVT Engine
(Sales Code EHD) equipped with 8-SPD Auto 845RE Trans (Sales Code DFL).

21-019-16

-2-

SYMPTOM/CONDITION:
A small number of customers may experience an erroneous Malfunction Indicator Lamp
(MIL) Illumination. Upon further investigation, the technician may find a Diagnostic Trouble
Code (DTC) stored in the TCM memory.
3.6L Engine (Sales Code ERB) with 845RE Transmission (Sales Code DFL):
•
•
•
•

**Improved shift quality.**
P1DCD - TCM monitoring processor performance multiple clutches locked up.
P1B13 - Park-By-Wire unintended out of park position.
P0734 - Gear 4 Shift Incorrect Ratio.

3.6L Engine (Sales Code ERB) with 8HP45 Transmission (Sales Code DFG):
•
•
•

**Improved shift quality.**
Harsh 2-1 downshift or bump at low speeds.
P0734 - Gear 4 Shift Incorrect Ratio.

3.0L Engine (Sales Code EHD) with 845RE Transmission (Sales Code DFL):
•
•
•

**Improved shift quality.**
P1DCD - TCM monitoring processor performance multiple clutches locked up.
P1B13 - Park-By-Wire unintended out of park position.

DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all related systems are functioning as designed. If 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 the symptom/condition listed above or if the technician finds the
DTC, perform the Repair Procedure.
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 TCM with the latest software. Detailed instructions for flashing control
modules using the wiTECH Diagnostic Application are available by selecting the
application’s “HELP” tab.
1. 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.
NOTE: Do not clear the shift adaptives in the TCM’s memory. This action may cause
the transmission to not shift smoothly until the adaptives are re-learned.

-3-

21-019-16

POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:
**18-19-05-DJ

Description
Module, Transmission
Control (TCM) Reprogram
(0 - Introduction)

Skill Category
21- Automatic
Transmission

Amount
0.2 Hrs**

NOTE: The expected completion time for the flash download portion of this
procedure is approximately 3 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. If the customer came in with an
issue and if the dealer finds a software update to correct that issue, use failure code
CC, for all other use failure code RF.
•
•

If the customer’s concern matches the SYMPTOM/CONDITION identified in the
Service Bulletin, failure code CC is to be used.
If an available flash is completed while addressing a different customer concern,
failure code RF is to be used.

CC

Customer Concern

RF

Routine Flash