News Channel Update |

Vehicle Compliance & Analysis

TO: Mercedes-Benz Dealer Principals, General Managers, FROM: Gregory Gunther, Senior Manager, Vehicle
Sales Managers, Service Managers, Parts Managers
Compliance and Analysis, Engineering Services
RE: Service Campaign Launch Notification
Update Battery Management System Control
DATE: November 3, 2023
Unit Software
MY23 S-Class (223 platform)

IMPORTANT SERVICE CAMPAIGN LAUNCH

Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FORMERCEDES (1-800-367-6372).

Sincerely,
Gregory Gunther
Senior Manager, Vehicle Compliance & Analysis

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

News Channel Update |

Vehicle Compliance & Analysis

Service Campaign Launch Notification
Campaign No. :

Campaign Desc. :

2023100013

23P5496332

November 3, 2023
Update Battery Management System Control
Unit Software

This is to notify you of the Service Campaign Launch to update the battery management system control unit software on 466
Model Year (“MY”) 2023 S-Class (223 platform) vehicles. The vehicles will be visible and flagged in VMI as “OPEN” on November
3, 2023.

Background
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has
determined that in certain MY 2023 S-Class (223 platform) vehicles, the battery
management system software does not meet current production specifications. In
this case, the vehicle may not start, or a message displays in the instrument cluster
or in the customer Mercedes me Connect App stating, “possible overheating of the
high voltage battery.”

Issue

What We’re Doing

MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will
update the battery management system control unit software.

Parts

The remedy is available and can be performed as necessary.

Vehicles Affected
2023
S-Class

Vehicle Model Year(s)
Vehicle Model

Vehicle Populations
Total Campaign Population

466

Next Steps/Notes
Customer Notification Timeline

Customer letters will not be mailed.

AOMS/SOMS

AOMs – This campaign may generate questions from your dealers.

While we regret any inconvenience this may cause, MBUSA is determined to maintain a high level of vehicle quality and customer
satisfaction. Please refer all customer inquiries to the Customer Assistance Center at 1-800-FOR-MERCEDES.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

2

Campaign No. 2023100013, November 2023

TO:

ALL MERCEDES-BENZ CENTERS

SUBJECT:

Model S-Class (223 platform)
Model Year 2023
Update Battery Management System Control Unit Software

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that
in certain MY 2023 S-Class (223 platform) vehicles, the battery management system software does
not meet current production specifications. In this case, the vehicle may not start, or a message
displays in the instrument cluster or in the customer Mercedes me Connect App stating, “possible
overheating of the high voltage battery.” An authorized Mercedes-Benz dealer will update the

battery management system control unit software.

Prior to performing this Campaign:
•

VMI must be checked before performing campaigns to verify that the campaign is required on
a specific vehicle. Always check for any other open campaigns, and perform accordingly.

•

Please review the entire Campaign bulletin and follow the repair procedure exactly as
described.

Approximately 466 vehicles are affected.
Order No. P-SC-2023100013

2
Update Battery Management System Control Unit Software
• Always use the latest XENTRY Diagnosis software release with all available add-ons.
• Follow the operation steps exactly as described in XENTRY Diagnosis.
• Use a charger to ensure sufficient power supply to the vehicle’s on-board electrical system battery
(greater than 12.5 V).
• If XENTRY Diagnosis is already connected to the vehicle, start with Work Procedure step 2.
If two or more software updates or SCN codings are performed during a single workshop
visit, operation items 02-4762 and 02-5058 may be invoiced
only on one of the workshop orders.
Work Procedure

1. Connect XENTRY Diagnosis.
2. Update (N82/2) battery management system (BMS) control unit software.
To do this, select menu item "Quick test view → N82/2 - Battery management system (BMS) → Adaptations →
Control unit update → Updating of control unit software".
Then follow the user guidance in XENTRY Diagnosis.

3. Disconnect XENTRY Diagnosis.
__________________________________________________________________________________________________
Note: The following allowable labor operation should be used when submitting a warranty claim for this repair:
Warranty Information
Damage

Operation

Code

Number

Description

Update (N82/2) battery management system (BMS) control unit software
(with XENTRY Diagnosis connected)
Connect/disconnect diagnostic system
54 963 32
02-4762*
(XENTRY Diagnosis)
Connect/disconnect starter battery charger
02-5058*
(with XENTRY Diagnosis connected)
* Invoice operation item only once for each workshop order.
02-9334

Labor Time
(hrs.)

0.1
0.1
0.1

Note: Always check Xentry Operation Time (XOT) for the current OP-Code times. Labor times are subject to change
and updates may not be reflected in this document.

P-SC-2023100013