Internal

News Channel Update | Vans Customer Service and Parts
TO: Mercedes-Benz Dealer Principals, General
Managers, Sales Managers, Service Managers,
Parts Managers

FROM: Anthony Washington, Senior Manager,
Regulations and Certifications

RE: Emissions Service Campaign Notification
Model: Sprinter
Model Year(s): 2019-2021
Update SCR control unit software

DATE: August 2025

IMPORTANT SERVICE CAMPAIGN INFORMATION
Please see the attached documents related to the campaign listed above.
Please refer all customer inquiries to the Customer Care 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

Internal

News Channel Update | Vans Customer Service and Parts
Campaign No.:

CA DMV.:

Campaign Desc.:

2025070011

250711

VS3TAMCOU

Update SCR control unit software

This is to notify you of an Emissions Service Campaign concerning the Select Catalyst Reduction (“SCR”)
control unit software on 103,666 Model Years 2019-2021 Mercedes-Benz Sprinter vans (907 platform). All
affected VINs will be flagged as “OPEN” in VMI in August 2025.

Background
Mercedes-Benz AG, the manufacturer of Mercedes-Benz Sprinter vans, has determined
that on certain Model Year 2019-2021 Sprinter vehicles, the SCR control unit software
does not correspond to the current series production configuration.

Issue

What We’re
Doing
Parts

An authorized Mercedes-Benz Sprinter dealer will update the SCR control unit software.
Software is available.
Vehicles Affected

Vehicle Model
Year(s)
Vehicle Model

2019-2021
Sprinter
Vehicle Populations

Population

103,666

Notice to California Dealers: As required by 13 CCR 2117, a proof of correction (“POC”) certificate showing
that the vehicle has been repaired under this campaign must be issued by the authorized service facility, and
that such a certificate may be required by California as a condition of vehicle registration or operation.
Please reference this POC in the attached work instructions. Failure to complete this step may result in fines
and penalties and lead to customer dissatisfaction.

Next Steps/Notes
Customer Notification Timeline

A customer notification will be provided for this Emissions Campaign.
Customer Letters will be mailed in September 2025.

VABDM/SBDM

VABDMs – This service campaign may generate questions from your
dealers. Please forward this notice to your dealers ASAP.

While we regret any inconvenience this may cause, we are determined to maintain a high level of
vehicle quality and customer satisfaction.

Mercedes-Benz USA, LLC
A Mercedes-Benz Group AG Company
One Mercedes-Benz Drive

Sandy Springs, GA 30328

770.705.0600

Work instructions

Van

Group 49
CODE: VS3TAMCOU
SM49.20-D-0036SG
27.05.2025

Update SCR control unit software (code: VS3TAMCOU, acc. no. :54 962 39)
Model

907

© 2025 by Mercedes-Benz AG
Printed in Germany
This document, including all its parts, is protected by copyright. Any further processing or use requires the previous written consent of
Mercedes-Benz AG, Department GCSP/OR, D-70546 Stuttgart. This applies in particular to reproduction, distribution, alteration,
translation, microfilming and storage and/or processing in electronic systems, including databases and online services.

Update SCR control unit software (code: VS3TAMCOU, acc. no. :54 962 39)

SM49.20-D-0036SG

Model

Update SCR control unit software (code: VS3TAMCOU, acc. no. :54 962
39)

1

2
a

3
f

14.11.2024

907

Operation no. of the operation texts or standard texts and flat rates
Category
Op. no.
Operation text
L
02 2443*
Operations: Connect/disconnect diagnostic system
L
02 2445*
Operations: Connect/disconnect charger (with diagnostic
system connected)
L
02 2442
Operations: Update .............. control unit software (with
diagnostic system connected)
* Invoice operation item once per workshop order only!

g

SM49.20-D-0036SG

Notes on programming control units
Check
Check whether vehicle is affected by
measure.

Update software
Connect diagnostic system.

Connect charging equipment.
Maintaining on-board electrical system
voltage when performing test and
diagnosis work on vehicle

4

Update software of selective catalytic
reduction (SCR) control unit.

5
a
6
f

Disconnect diagnostic system.

Time
-----

Acc. no.
54 962 39
54 962 39

Code
VS3TAMCOU
VS3TAMCOU

---

54 962 39

VS3TAMCOU

AH54.21-P-0001-03Z
i For authorized Mercedes‑Benz
service partners, only the entry in the
"Extended VEGA Application" (EVA)
system, in the "Current" tab, is decisive.
There is no need to also check the
affected vehicles in the workshop
information system (WIS) or vehicle list.

i Always use the latest XENTRY
Diagnosis software release with all
available add-ons.
i It is absolutely essential to precisely
follow the operation steps as described
in the vehicle diagnosis system.

AD00.00-D-2000-06TS

AR54.10-D-1127TS

p
During the entire work procedure a
sufficiently large voltage supply must be
provided for the vehicle's on-board
electrical system.
Otherwise any undervoltage that occurs
may damage the control units.
i Follow the operating instructions for
the charger.
i Use the charger to ensure that an
adequate power supply (min. 12.5 V) is
provided for the on-board electrical
system battery.
i It is absolutely essential to precisely
follow the operation steps as described
in the vehicle diagnosis system.

Remove charger from vehicle.

SM49.20-D-0036SG / Van / 27.05.2025

AD00.00-D-2000-06TS
AR54.10-D-1127TS

1

SM49.20-D-0036SG

Update SCR control unit software (code: VS3TAMCOU, acc. no. :54 962 39)

Fill out campaign label (1) and
attach to air filter housing (2).

7

Only applies for vehicles in State
of California.
Bonding surface must be
absolutely free of dust and grease.
Otherwise, a sufficient degree of
adhesion cannot be assured.
To do so, enter 6-digit campaign
number, dealer code and date.
Cleaner

-

Fill out certificate and hand over to
customer.

BR00.45-Z-1025-04A

Only applies for vehicles in State
of California.
Apply number from campaign
label (1).

Repair materials
Number
BR00.45-Z-1025-04A

Parts ordering note
Part no.
A 000 584 54 13
A 000 584 42 14

2

Designation
Cleaner

Designation
Campaign label (California Only)
Certificate (California Only)

SM49.20-D-0036SG / Van / 27.05.2025

Order Number
A 005 989 1971

Quantity
1
1