NCU-2023030017

Internal
News Channel Update |
Vehicle Compliance & Analysis
TO: Mercedes-Benz Dealer Principals, General Managers, FROM: Gregory Gunther, Department Manager, Vehicle
Sales Managers, Service Managers, Parts Managers
Compliance and Analysis, Engineering Services
RE: Service Campaign Launch Notification
Update Left and Right Control Unit Software for
DATE: April 6, 2023
Rear Axle Steering
MY22-23 SL (232 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
Department 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
Internal
News Channel Update |
Vehicle Compliance & Analysis
Service Campaign Launch Notification
Campaign No. :
Campaign Desc. :
2023030017
22P5496211
April 6, 2023
Update Left and Right Control Unit Software
for Rear Axle Steering
This is to notify you of the Service Campaign Launch to update the left and right control unit software for the rear axle steering in
1,365 Model Year (“MY”) 2022-2023 SL (232 platform) vehicles. The vehicles will be visible and flagged in VMI as “OPEN” on April
6, 2023.
Background
Issue
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined
that in certain MY 2022-2023 SL (232 platform) vehicles, the software of the left and
right rear axle steering control unit does not meet current production specifications.
As a result, a rear axle steering fault message might sporadically appear in the
instrument cluster during engine start. The vehicle continues to be operational and
safe to drive should the message appear.
What We’re Doing
MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will
update the software on the left and right rear axle steering control unit.
Parts
The remedy is available and can be performed as necessary.
Vehicles Affected
2022-2023
SL
Vehicle Model Year(s)
Vehicle Model
Vehicle Populations
Total Campaign Population
1,365
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.
Mercedes-Benz USA, LLC
One Mercedes-Benz Drive
A Mercedes-Benz Group AG Company
Sandy Springs, GA 30328
770.705.0600
Campaign No. 2023030017, April 2023
TO:
ALL MERCEDES-BENZ CENTERS
SUBJECT:
Model SL (232 platform)
Model Year 2022-2023
Update Left and Right Control Unit Software for Rear Axle Steering
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that in certain MY
2022-2023 SL (232 platform) vehicles, the software of the left and right rear axle steering control unit does
not meet current production specifications. As a result, a rear axle steering fault message might sporadically
appear in the instrument cluster during engine start. The vehicle continues to be operational and safe to
drive should the message appear. An authorized Mercedes-Benz dealer will update the software on the left
and right rear axle steering control unit.
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 1,365 vehicles are affected.
Order No. P-SC-2023030017
This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data
Control, and MBUSA-SLP S424HH001, Control of Quality Records.
2
Update software of left and right rear axle steering control units
 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 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 right rear axle steering control unit (RAS232R) software.
To do this, select menu item "Quick test view – N68/10 right rear axle steering control unit (RAS232R) –
Adaptations – Control unit update – Updating of control unit software"
Then follow the user guidance in XENTRY Diagnosis.
3. Update software of N68/9 left rear axle steering control unit (RAS232L).
To do this, select menu item "Quick test view – N68/9 left rear axle steering control unit (RAS232L) – Adaptations
– Control unit update – Updating of control unit software".
Then follow the user guidance in XENTRY Diagnosis.
4. 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
Labor Time
(hrs.)
Update software of left rear axle steering control unit (RAS232L)
0.1
(with XENTRY Diagnosis connected)
Update software of right rear axle steering control unit (RAS232R)
02-9334
0.1
(with XENTRY Diagnosis connected)
54 962 11
Connect/disconnect diagnostic system
02-4762*
0.1
(XENTRY Diagnosis)
Connect/disconnect starter battery charger
02-5058*
0.1
(with XENTRY Diagnosis connected)
* 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.
02-9334
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-2023030017