2021-2022 Mercedes-Benz EQS-Class & S-Class Calibration Of Ambient Lighting

TO: Mercedes-Benz Dealer Principals, General Managers, Sales Managers, Service Managers, Parts Managers	FROM: Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services
RE: Service Campaign Launch Notification Calibration of Ambient Lighting MY21-22 223 and 297 (EQS-Class and S-Class)	DATE: December 3, 2021

IMPORTANT NEW SERVICE CAMPAIGN LAUNCH INFORMATION

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

Sincerely,

Gregory Gunther

Department Manager, Vehicle Compliance & Analysis

Service Campaign Launch Notification			December 3, 2021
Campaign No. :	Campaign Desc. :		Calibration of Ambient Lighting
2021100011	21P5499415
This is to notify you of the Service Campaign Launch regarding calibration of the active ambient lighting in 28 Model Year (“MY”) 2021-2022 223 and 297 (EQS-Class and S-Class) vehicles. Affected VINs will be flagged in VMI as “OPEN” on December 3, 2021.
Background
Issue		Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2021-2022 EQS-Class and S-Class (223 and 297 platform) vehicles, an incorrect calibration of the LED strips may have been coded for the ambient lighting. As a result, it is possible that the instrument cluster may display the error message “Ambient Light Warning Support Without Function” when the customer selects settings with a green color.
What We’re Doing		MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will recalibrate the ambient lighting.
Parts		The Remedy is available and can be performed as necessary.
Vehicles Affected
Vehicle Model Year(s)		2021-2022
Vehicle Model		EQS-Class and S-Class
Vehicle Populations
Total Campaign Population		28
Next Steps/Notes
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.

Campaign No. 2021100011, December 2021

TO:	ALL MERCEDES-BENZ CENTERS
SUBJECT:	Model EQS-Class and S-Class (223 and 297 platform) Model Year 2021-2022 Calibration of Ambient Lighting

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY
2021-2022 EQS-Class and S-Class (223 and 297 platform) vehicles, an incorrect calibration of the LED
strips may have been coded for the ambient lighting. As a result, it is possible that the instrument cluster
may display the error message “Ambient Light Warning Support Without Function” when the customer
selects settings with a green color. MBUSA will conduct a service campaign and an authorized Mercedes-
Benz dealer will re-calibrate the ambient lighting to remedy the topic.

Prior to performing this Campaign:

VMI must always 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 28 vehicles are affected.

Order No. P-SC-2021100011

Calibration of Ambient Lighting Model 223 and 297 with code 878

Ensure use of XENTRY Diagnosis version 03/2021 or higher.
Before starting the work procedure, install all the add-ons that are updated daily in XENTRY Diagnosis.
Make sure to follow the operation steps exactly as described in XENTRY Diagnosis.
Use a charger to ensure sufficient power supply of the vehicle on-board electrical system battery (greater than 12.5 V).

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.

IMPORTANT: The following must be taken into account before the service appointment and performance of the operations on the customer vehicle in the workshop!

Two days before the customer appointment, a XSF ticket must be created in the XENTRY Portal to request expanded diagnostic rights. With this XSF ticket, the XENTRY user will receive expanded diagnostic rights for the affected vehicle (VIN-based).

The diagnostic rights are valid for max. 14 days.

The following entries must be made in the XSF ticket:

a. Diagnosis → XENTRY Diagnosis

b. Priority → Standard

c. Use case → Diagnosis

d. Operation step → CU adjustments special functions

e. Problem description

- Expanded diagnostic rights for the calibration of the light-emitting diode strip E34/ 1-6 control units.
- Service measure damage code: 54 994 15
- VIN/FIN: ………………………………………..
- XENTRY user ID: …………………………….

Work Procedure

Connect XENTRY Diagnosis.

Calibrate light-emitting diode strip E34/1 control unit.

To do this, select menu item “Quick test view – E34/1 light-emitting diode strip, cockpit, left (LEDB-C-L) -Adaptations – Teach-in processes – Fault rectification”.