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 Engine Control Unit Software
DATE: September 20, 2024
MY20-23 CLS, E-Class, GLE, AMG GT 4-Door (257,
213, 238, 167, and 290 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. :

2024090007

23P5496345

September 20, 2024

Update Engine Control Unit Software

This is to notify you of the Service Campaign Launch to update the engine control unit software in 22,775 Model Year (“MY”) 20202023 CLS, E-Class, GLE, and AMG GT 4-Door (257, 213, 238, 167, and 290 platform) vehicles. The vehicles will be visible and
flagged in VMI as “OPEN” on September 20, 2024.

Background
Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined
that on certain MY 2020-2023 CLS (257 platform), E-Class (213 and 238 platform),
GLE (167 platform), and AMG GT 4-Door (290 platform) vehicles, the engine control
unit software does not correspond to current production specifications. As a
consequence, the functionality of the post-catalyst oxygen sensor may be impaired
due to increased thermal loading .

Issue

What We’re Doing

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

Parts

The remedy is available and can be performed as necessary.

Vehicles Affected
2020-2023
CLS, E-Class, GLE, AMG GT 4-Door

Vehicle Model Year(s)
Vehicle Model

Vehicle Populations
Total Campaign Population

22,775

Next Steps/Notes
Customer Notification Timeline

No customer letters will be mailed for 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

Campaign No. 2024090007, September 2024

TO:

ALL MERCEDES-BENZ CENTERS

SUBJECT:

Model CLS, E-Class, GLE, and AMG GT (257, 213, 238, 167 and 290 platforms)
Model Year 2020 - 2023
Update Engine Control Unit Software

Service Campaign Bulletin

Bulletin
Campaign
ServiceService
Campaign
Bulletin

Service Campaign Bulletin

Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain
MY 2020-2023 CLS (257 platform), E-Class (213 and 238 platform), GLE (167 platform), and AMG GT 4Door (290 platform) vehicles, the engine control unit software does not correspond to current production
specifications. As a consequence, the post-catalyst oxygen sensor may experience increased thermal load
impairing functionality. An authorized Mercedes-Benz dealer will update the engine control unit software in

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 22,775 vehicles are affected.
Order No. P-SC-2024090007

Service Campaign Bulletin

Service Campaign Bulletin

Service Campaign Bulletin

affected vehicles.

2

Update Engine Control Unit Software
Model 167, 213, 238, 257 and 290
• 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 Motor electronics (ME) control unit software.
To do this, select menu item "Quick test view → N3/10 – Motor electronics 'MRG1' for combustion engine
'M256' (ME) → 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

Labor Time
(hrs.)

Operation: Update N3/10 – Motor electronics (ME) control unit software
(with XENTRY Diagnosis connected)

0.1

02-4762*

Connect/disconnect diagnostic system
(XENTRY Diagnosis)

0.1

02-5058*

Connect/disconnect starter battery charger
(with XENTRY Diagnosis connected)

0.1

02-9334**
54 963 45

Description

* Invoice operation items only on one of the workshop orders, if two or more software updates or SCN codings are
performed during a single workshop visit.
** Please enter the code and accounting number manually in the workshop order as per the work instructions.
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-2024090007