NUMBER:
GROUP:
DATE:

08-003-20 REV. C
08 - Electrical
August 21, 2020

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 08-003-20 REV. B, dated August 20, 2020, which
should be removed from your files. All revisions are highlighted with **asterisks** and
includes Lop correction.
This Service Bulletin is also being released as Rapid Response Transmittal (RRT) 20-048,
dated August 20, 2020. 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.
SUBJECT:
Flash: Driver Assistance System Module (DASM) Enhancements
OVERVIEW:
This bulletin involves reprogramming the DASM with the latest software available.
MODELS:
2019 - 2020 (JL)

Jeep Wrangler

NOTE: This bulletin applies to vehicles within the following markets/countries: North
America, APAC, LATAM and EMEA.
NOTE: This bulletin applies to vehicles built on or before July 31, 2020 (MDH 0731XX)
equipped with Full Speed Fwd Collision Warn Plus (Sales Code LSU).
SYMPTOM/CONDITION:
The customer may describe the following:
• Instrument Panel Cluster (IPC) warnings for the Forward Collision Warning (FCW) informing the
driver to apply the brakes.
The following software enhancements are also available:
• Allows customers to turn off the FCW indefinitely, rather than resetting to “ON” at each key
cycle (South Korea only).
• System improvements to enhance the FCW system hazard detection which may reduce
nuisance actions and warnings from incorrectly identified structures and hazards, which can in
rare circumstances cause an unwarranted brake event.

08-003-20 REV. C

-2-

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 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.
1. *Is the vehicle on the RRT VIN list?
• YES >>> Proceed to Step 2.
• NO >>> Proceed to Step 3.
2. Does the DASM have the latest software already installed?
• YES >>> This bulletin has been completed, use inspect LOP **(18-20-09-97)** to close the
active RRT.
• NO >>> Proceed to Step 3.
3. Reprogram the DASM with the latest software. Detailed instructions for flashing control modules
using the wiTECH Diagnostic Application are available by selecting the application ”HELP” tab.
4. 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.
TIME ALLOWANCE:
Labor Operation
No:
18-20-09-97

18-20-09-98

Description

Skill Category

Amount

Module, Drivers Assistance System Module (DASM) - Inspect
(0 - Introduction)

6 - Electrical and
Body Systems

0.2 Hrs.

Module, Drivers Assistance System Module (DASM) - Inspect and Reprogram
(0 - Introduction)

6 - Electrical and
Body Systems

1.0 Hrs.

NOTE: The expected completion time for the flash download portion of this procedure is
approximately 48 minutes. Actual flash download times may be affected by vehicle
connection and network capabilities.

-3-

08-003-20 REV. C

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.
RF

Required Flash - RRT

CC

Customer Concern**