A 000 905 84 11 80
(included in package
A 642 905 18 00 85)
NOx sensor upstream of SCR
catalytic converter: Torque to
60 Nm / 44.3 ft·lb

31

Install the NOx sensor control
unit upstream of the SCR
catalytic converter (23) on the
frame.
i
Use new nut fasteners (46):
N 000000 003477
NOx sensor control unit:
Torque to 9 Nm / 6.6 ft·lb

32

Connect the electrical plug
connection (24).
i
Push the gray retaining tab
(24.1) in the direction of the
arrow to lock.

33

Secure the harness (22) with
a cable tie.
i
A 007 997 56 90 (1x)

34

Bend the heat shield (47) back into
old position and install a new clamping nut
(48).
A 000 994 32 11
i
To do this, place the clamping nut (48)
centrally on the pin, as shown, and slide up
to the stop using a socket wrench.

36

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Emissions Campaign 2020040001

Installation of Downstream NOx Sensor

35

Install new NOx sensor control unit
downstream of the SCR catalytic
converter (27).

37

i
Push the gray locking piece (29) in the
direction of the arrow to lock.

i
A 000 905 84 11 80 (included in
package A 642 905 18 00 85)
Use new nut fasteners:
N 000000 003477
NOx sensor control unit: Torque to
9 Nm / 6.6 ft·lb

36

Install the new NOx sensor
downstream of the SCR catalytic
converter (5) on the new SCR catalytic
converter.

Connect and lock the electrical plug
connection (30).

38

Secure harness (32) with cable tie (31).
i
A 007 997 56 90 (1x)
p
Do not route the harness (32) under tension.
Otherwise damage could occur.

i
NOx sensor downstream of catalytic
converter: Torque to 60 Nm / 44.3 ft·lb

37

a

39

Emissions Campaign 2020040001

Install the heat shield (25).
i
To do this, place the new
clamping nuts (26) centrally
on the pin, as shown, and
slide up to the stop using a
socket wrench.
i
A 000 994 32 11

40

Install the new mounting tab (34) on the heat shield (25).
i
A 220 546 18 43

41

Clip the harness (32) into the mounting tab (34).
p
Do not kink the harness (32) and make sure it is not routed
so as to be abraded.
This prevents damage.
p
The harness (32) must not touch heat shield (25).
This prevents damage.
i
The layout schematic of the harness (32) has changed on
account of the changed position of the NOx sensor
downstream of the SCR catalytic converter (4).

42

Lift:
Lower the vehicle.
Ramps:
Vehicle may remain on ramps

38

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Emissions Campaign 2020040001

Execution of the AEM Special Procedure
43

Connect the battery charger to the
vehicle's jump posts as indicated.
(arrows)
p
A sufficient power supply to the
vehicle on-board system must be
ensured throughout the entire work
procedure.
Otherwise any undervoltage that
occurs may damage the control
units.
i
Do not connect the battery charger to
the auxiliary battery in the engine
compartment.
i
Follow the operating instructions for
the battery charger.
i
Use a Mercedes-Benz recommended
battery charger to ensure an
adequate voltage supply (min. 12.5 V)
is provided for the on-board electrical
system battery.

39

a

44

Emissions Campaign 2020040001

Connect the diagnostic system.
i
The diagnostic system remains connected to the vehicle
throughout the work procedure!
Do not disconnect the diagnostic system’s online connection.

45

Switch on the ignition.

46

Start the diagnostic system.

47

Run XENTRY and start special procedure of
customer service measure.
i
To do this, select the following menu items: N3/35 Motor electronics 'CDI60' for combustion engine
'OM642' (CDI) (Code: MH3|MH5|MH7) → Special
procedures → Service measure "Exhaust gas aftertreatment"
i
The process starts automatically after starting the
special procedure. The operation steps must be
performed exactly as per the diagnostic system.

i
A result report is displayed at the end of the
special procedure. Upload this report to
paperless pXD. The report must indicate “OK” for
all items. Otherwise, the procedure must be
repeated. The vehicle can only be returned to the
customer after successfully completing the
special procedure.
i
Parts of the procedure via the diagnostic system
are shown on the following pages.

i
If a fault arises during the special procedure,
repeat the procedure. If the fault persists, create a
PTSS case or XSF-ticket including the following:
•Initial Quick test
•Current Quick test
•Control unit log
•AEM Result Report
•Support Package

40

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Emissions Campaign 2020040001

First

Second
Third

41

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Emissions Campaign 2020040001

wait

42

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Emissions Campaign 2020040001

43

a

Emissions Campaign 2020040001

wait

44

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Emissions Campaign 2020040001

First

Second

Caution page is for information only, and can be ignored when performing the AEM.
Select 'Continue' to proceed with the AEM Service Measure.

45

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Emissions Campaign 2020040001

First

Second

Third

46

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Emissions Campaign 2020040001

Make sure it’s unchecked

47

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Emissions Campaign 2020040001

Caution page is for information only, and can be ignored when performing the AEM.
Select 'Continue' to proceed with the AEM Service Measure.

Service Measure
is NOT Complete!

This is NOT the final results page.
Select 'Continue' to proceed with the AEM Service Measure.

48

a

48

Emissions Campaign 2020040001

Complete the information on the
APPROVED EMISSION
MODIFICATION LABEL and attach it to
the hood near the hood lock.
p
The attachment areas must be entirely
free from dust and grease.
Otherwise, adequate adhesion cannot
be ensured.
i
Fill in Emission Modification Program
No., your dealer code, the date of the
repair and mark the components that
have been installed or modified. Use a
black ultra fine point permanent marker.
i
A 000 584 93 13

Failure to comply may result in dealer
debit and/or possible fines.

49

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Emissions Campaign 2020040001

Verify completed
successfully

i
If Service Measure Completed successfully:
Skip to next page (pg 50) to print AEM results page.

i
If vehicle is 4x4, and Service Measure did NOT complete
successfully due to CDI: "NOT CURRENT" (as shown above):
Follow LI07.08-N-072747 to create a Diagnosis XSF Ticket.

50

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Emissions Campaign 2020040001

51

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Emissions Campaign 2020040001

First

Second

Name file:
AEM Results
Third
Fourth

Fifth

52

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Emissions Campaign 2020040001

Final Quick Test

49

Perform a final quick test and upload to paperless pXD.
i
Faults stored in the memorymust be deleted from the
fault memory after completing the work.
i
If faults are current and stored in the updated control
modules they need to be addressed. If technical
hardships occur create a PTSS caVH

The procedure via the diagnostic system is shown on
the following pages.

53

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Emissions Campaign 2020040001

54

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Emissions Campaign 2020040001

wait

55

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Emissions Campaign 2020040001

First

Second

Name file: QT 2
Third
Fourth

56

a

50

Emissions Campaign 2020040001

End the XENTRY session

57

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Emissions Campaign 2020040001

51

Switch off the ignition.

52

'LVFRQQHFWWKHGLDJQRVLVV\VWHP

53

'LVFRQQHFWWKHEDWWHU\FKDUJHU

54

Close the hood.

55

Connect any aftermarket devices that
were connected to the X11/4 diagnostic
socket before.

56

Ramps:
Remove wheel chocks, release parking
brake, and drive the vehicle off the
ramps.
p
Drive the vehicle slowly and at a
constant speed off the ramps.
Otherwise the vehicle may be
damaged.

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Emissions Campaign 2020040001

Replacement parts 2020040001
Part No.
A 642 905 18 00 85
A 220 546 18 43
A 000 994 32 11
A 007 997 56 90
N 000000 003477
A 000 584 93 13

Designation

Quantity

1
1
4
2
Cable Tie (with holding clip)
Nut Fastener
4
APPROVED EMISSION MODIFICATION LABEL 1

NOx Sensor Package
Mounting Tab
Lock Pin

59