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
Communication Module Software Update
DATE: January 5, 2024
MY21 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. :

2023120012

23P5499216

January 5, 2024

Communication Module Software Update

This is to notify you of the Service Campaign Launch to Update the Communication Module Software in 1,579 Model Year (“MY”)
2021 S-Class (223 platform) vehicles. The vehicles will be visible and flagged in VMI as “OPEN” on January 5, 2024.

Background

Issue

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has
released a software update for certain MY 2021 S-Class (223 platform) vehicles
that allows for future remote software updates on additional control units.

What We’re Doing

MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will
update the Communication Module software.

Parts

The remedy is available and can be performed as necessary.

Vehicles Affected
2021
S-Class

Vehicle Model Year(s)
Vehicle Model

Vehicle Populations
Total Campaign Population

1,579

Next Steps/Notes
Customer Notification Timeline

Customers will receive an in-vehicle notification regarding this campaign.

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. 2023120012, January 2024

TO:

ALL MERCEDES-BENZ CENTERS

SUBJECT:

Model S-Class (223 platform)
Model Year 2021
Update RAMSES control unit software

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has released a
software update for certain MY 2021 S-Class (223 platform) vehicles that allows for remote
software updates on additional control units in the future.

Prior to performing this Campaign:


VMI must be checked before performing campaigns to verify that the campaign is required on



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

a specific vehicle. Always check for any other open campaigns, and perform accordingly.
described.

Approximately 1579 vehicles are affected.
Order No. P-SC-2023120012

2
Update RAMSES control unit software
 Always use the latest XENTRY Diagnosis software release with all available add-ons.
 Make sure to follow the operation steps exactly as described in XENTRY Diagnosis.
 Use a charger to ensure sufficient power supply of 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 one workshop
visit, the operation items 02-4762 and 02-5058 may only be invoiced once for each workshop order.
Work Procedure

1. Connect XENTRY Diagnosis.
2. Update RAMSES control unit software.
To do this, select menu item "Quick test view → N112/2 "Telematics services" communication module →
Adaptations → Control unit update → Update 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 RAMSES control unit software
(with XENTRY Diagnosis connected)
Connect/disconnect diagnostic system
54 992 16
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-2023120012