Communication Module Software Update – 2021 Mercedes-Benz S-Class

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Mercedes-Benz USA, LLC A Mercedes-Benz Group AG Company One Mercedes-Benz Drive Sandy Springs, GA 30328 770.705.0600
News Channel Update
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Vehicle Compliance & Analysis
IMPORTANT SERVICE CAMPAIGN LAUNCH
Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FOR- MERCEDES (1-800-367-6372).
Sincerely, Gregory Gunther
Senior Manager, Vehicle Compliance & Analysis
TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers
RE: Service Campaign Launch Notification Communication Module Software Update MY21 S-Class (223 platform)
FROM: Gregory Gunther, Senior Manager, Vehicle Compliance and Analysis, Engineering Services
DATE: January 5, 2024 News Channel Update | Vehicle Compliance & Analysis Service Campaign Launch Notification January 5, 2024 Campaign No. : 2023120012 Campaign Desc. : 23P5499216 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 Vehicle Model Year(s) Vehicle Model
Total Campaign Population 2021
S-Class
Vehicle Populations
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 A Mercedes-Benz Group AG Company One Mercedes-Benz Drive 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 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 1579 vehicles are affected. Order No. P-SC-2023120012 2
P-SC-2023120012
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 Code Operation Number
Description
Labor Time (hrs.) 02-9334 02-4762* 02-5058*
Update RAMSES control unit software (with XENTRY Diagnosis connected) Connect/disconnect diagnostic system (XENTRY Diagnosis)
Connect/disconnect starter battery charger (with XENTRY Diagnosis connected) 0.1 0.1 0.1 * Invoice operation item only once for each workshop order. 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.

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