GROUP

NUMBER

BRAKES

Technical Service Bulletin
SUBJECT:

DATE

23-BR-003H
MODEL(S)

OCTOBER 2023

PALISADE (LX2 PE)

SNOW MODE ACCELERATION S/W UPDATE FOR TCS LOGIC

Description: Certain 2023-24MY Palisade (LX2) vehicles may exhibit reduced acceleration when
driving in “Snow” mode on a curved road. This may be due to the Traction Control System (TCS) logic
becoming too sensitive and reducing engine torque in these conditions. Follow the procedures in this
bulletin to update the TCS logic in the Electronic Stability Control (ESC) system to resolve this condition.

Applicable Vehicles:
 2023-24MY Palisade (LX2) produced 05/01/2022 – 06/29/2023

GDS Information:
System

Event #

Description

ESC

1017

LX2 PE ESC Software Update (TCS Logic)

(*or use a later available event as listed in the GDS ESC System Update screen if one is available.)

Warranty Information:
Model

Op. Code

Operation

Op.
Time

Casual Part

Nature
Code

Cause
Code

Palisade
(LX2)

58900F05

ESC Software Update for
TCS Logic

0.4
M/H

58910-S8700

I14

ZZ3

NOTE 1: Normal warranty applies.
NOTE 2: Submit claim on Claim Entry Screen as “Warranty” type.
NOTE 3: This TSB includes Repair validation photos. Op times include VIN, Mileage, and photo
capture of the “ECU Update Complete” screen as outlined in the Digital Documentation Policy.
NOTE 4: If a part is found in need of replacement while performing this TSB and the affected part is
still under warranty, submit a separate claim using the same repair order. If the affected part is out of
warranty, submit a Prior Approval request for goodwill consideration prior to performing the work.

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SNOW MODE ACCELERATION S/W UPDATE FOR TCS LOGIC

SUBJECT:

Service Procedure:

STUI
This TSB includes Repair validation photos. Refer to the latest Digital Documentation Policy for
requirements.

NOTICE
You must initially perform the GDS ECU Update in Auto Mode.
 If the ECU Update starts but then fails in Auto Mode, perform the update in Manual Mode
to recover.

NOTICE
GDS Vehicle Battery Low Voltage Warning:
If voltage is below 12 volts as per the below GDS warning, then select Back and run the vehicle
for at least 20 minutes to ensure an adequate battery state of charge for reliable update results.
Turn ignition back on, and then retry the ECU update again.

1.

Perform the ECU Update in Auto Mode.
Use the Auto Mode ID Check to verify the ECU
ROM ID before updating the software.

i

Information

Refer to TSB 15-GI-001 for additional
tablet-based Mobile GDS ECU update
information.

TSB #: 23-BR-003H

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SNOW MODE ACCELERATION S/W UPDATE FOR TCS LOGIC

SUBJECT:

2.

STUI
Take a screenshot of the ECU Update
Complete screen using your particular
tablet’s screenshot save method and
upload to STUI.

3.

After the ECU Upgrade process shows 100%
complete, cycle the ignition key to OFF for at
least 10 seconds to reset the control unit.

4.

Perform an All Systems Fault Code search and
erase the history of the DTC that had
incidentally occurred from the ECU update.

5.

Start the engine to confirm proper operation of
the vehicle.

ROM ID Information Table:
Model

MY

System

HECU
Part Number

LX2

2023-24

ESC

58910-S8700

ROM ID
OLD
1.01
1.02

NEW
1.03

Manual Mode Password:
ECM Menu

Password

LX2 PE ESC 58910-S8700

8700

TSB #: 23-BR-003H

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