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Vehicle Compliance & Analysis

TO: Mercedes-Benz Dealer Principals, General Managers, Sales
Managers, Service Managers, Parts Managers

FROM: Gregory Gunther, Department Manager, Vehicle
Compliance and Analysis, Engineering Services
Joseph Haller, Department Manager, Warranty

RE: BlueTEC Update Extended Emission Modification
Warranty - UPDATE

DATE: October 5, 2021

Extended Modification Warranty
MY 2009-2016 OM642 and OM651
BlueTEC II Diesel Vehicles
Mercedes-Benz USA, LLC will provide an Extended Modification Warranty for each vehicle that has received
the Approved Emission Modification. The Extended Modification Warranty period shall be the greater of: (i)
10 years from the date of initial sale or 120,000 miles on the odometer, whichever occurs first; or (ii) 4
years or 48,000 miles from the date of installation of the Approved Emission Modification, whichever occurs
first. If an owner or lessee has already paid to a have a repair performed related to any of the components
listed below prior to the effective date of this Extended Modification Warranty, those repairs are not eligible
for reimbursement.
The Extended Modification Warranty coverage may be denied if an Eligible Vehicle has been altered with the
use of any after-market emission related components, parts, and/or software, or with the removal of any
original emission related components, parts, and/or software, and such alteration(s) are likely to
substantially affect the operation of the vehicle with the Approved Emission Modification, until the owner of
such vehicle, at his or her expense, has reversed the alteration(s) such that the Approved Emission
Modification will not be substantially affected.
The Extended Modification Warranty will not cover:
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Any damage or malfunctions caused by the installation of non-EPA or non-CARB certified emission
related parts, including damage or malfunction to parts needed for proper diagnosis of a covered
part.



Damage or malfunctions caused by or related to outside influence, such as damage due to an
accident, or vehicle misuse or neglect.

The Extended Modification Warranty includes parts and labor, and shall not void or supersede any existing
warranty.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Sandy Springs, GA 30328

A Daimler Company
770.705.0600

News Channel Update |

Vehicle Compliance & Analysis

The Extended Modification Warranty shall cover the following parts:
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Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
Selective Catalytic Reduction (SCR) Catalyst
Diesel Exhaust Fluid (DEF) Injector
Diesel Exhaust Fluid (DEF) Injector Controller
o (SCR Control Module/AdBlue Control Module)
Diesel Exhaust Fluid (DEF) Supply Module
o (includes DEF Fluid Heater and DEF Level Sensor)
Diesel Exhaust Fluid (DEF) Pump
Temperature Sensor Unit (DEF Temperature Sensor)
Exhaust Temperature Sensors
o Upstream Temperature Sensor for the following components: Turbo/CAT/DPF/SCR
Particulate Matter (PM) Sensor
Lambda Sensor (Emission Modification Categories 1-5 ONLY)
NOx Sensors
Fuel Injectors
Air Intake Throttle
Exhaust Gas Recirculation (EGR) Valve
Exhaust Gas Recirculation (EGR) Duct
Exhaust Gas Recirculation (EGR) Cooler (includes bypass control system that controls the EGR Cooler Bypass, i.e
the flap and related sensors and actuators responsible for the control of this sub-system)
Exhaust Gas Recirculation (EGR) Temperature Sensor
Intake Manifold/Charge Air Distributor
o (includes: Left and Right Charge Air Distribution Hose, Intake Manifolds including Intake Port Shut-Off
Linkage, Transverse Tube, Intake Port Shut-Off Actuator, Mass Air Flow Sensor (HFM), or Clean Air Duct
with Mass Air Flow Sensors (HFM) where applicable)
Turbocharger (including VGT Actuator)
o Note – All related components are covered by the Extended Emission Warranty with the exception of
boost system pipes and sensors
Engine Control Unit (ECU) Hardware (where replaced as part of the Approved Emission Modification)
Fully Integrated Transmission Control Controller Unit Hardware (where replaced as part of the Approved
Emission Modification)
Onboard Diagnostic (OBD) System*
Cylinder Head Assembly Components (camshafts, valves, springs, valve spring keepers, valve seats, cam bearing
caps, and manifold studs)
Engine Timing Chain
Intake Manifold Pressure Sensor
Instrument Cluster Hardware (where replaced as part of the Approved Emission Modification)
Coolant Thermostat (where replaced as part of the Approved Emission Modification)
and Crankcase ventilation valve (including line and heating element)

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Sandy Springs, GA 30328

A Daimler Company
770.705.0600

News Channel Update |

Vehicle Compliance & Analysis

*The Extended Modification Warranty will cover the cost of any OBD Diagnostic Scan for malfunctions that trigger the MIL,
regardless of whether the malfunction is attributable to a part that is covered under the Extended Modification Warranty, as well
as the cost of troubleshooting to determine the reason for the malfunction, but only if the malfunction is determined to be
attributable to a part that is covered under the Extended Modification Warranty.

Additional Extended Warranty Periods for Certain Emission-Related Components
As indicated in the table below, some emission-related components have an additional extended warranty
period. The additional extended warranty is added to the applicable Extended Modification Warranty period
above.
#

Part

EMC 1 & EMC 2

EMC 9

1

DOC

6 months and 6,000 miles

6 months and 6,000 miles

2

DPF

6 months and 6,000 miles

6 months and 6,000 miles

3

SCR catalyst

4

DEF injector

5

DEF injector controller

6

DEF supply module

12 months and 12,000 miles
-

6 months and 6,000 miles
-

7

DEF pump

8

DEF temperature sensor

6 months and 6,000 miles
-

6 months and 6,000 miles
-

9

Exhaust temperature
sensor

12 months and 12,000 miles

6 months and 6,000 miles

10

PM sensor

11

Lambda sensor

(Part not applicable)
12 months and 12,000 miles

12

NOx Sensors

13

Fuel injectors

14

Air intake throttle

15

EGR valve

16
17

EGR duct
EGR cooler (incl. bypass
control)

24 months and 24,000 miles
6 months and 6,000 miles
6 months and 6,000 miles
6 months and 6,000 miles

6 months and 6,000 miles
(Part not applicable)
12 months and 12,000
miles
6 months and 6,000 miles
-

EMC 10, & EMC 11
6 months and 6,000
miles
6 months and 6,000
miles
6 months and 6,000
miles
6 months and 6,000
miles
6 months and 6,000
miles
6 months and 6,000
miles
(Part not applicable)
12 months and 12,000
miles
-

6 months and 6,000 miles

-

-

18

Intake manifold/charge air
distributor

19

EGR temperature sensor

20

Turbocharger

21

Engine control unit

22

Transmission control unit
Hydraulic control unit
(EHS)

6 months and 6,000 miles
6 months and 6,000 miles
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-

-

-

-

-

23

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Sandy Springs, GA 30328

A Daimler Company
770.705.0600

News Channel Update |
24

OBD system

25

Cylinder Head assembly

26

Timing chain

27

Intake manifold pressure
sensor

28

Instrument cluster
Coolant thermostat, where
replaced as part of AEM

29

Vehicle Compliance & Analysis

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Warranty Claim Submission

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Submit the Extended Modification Warranty claim in EVA
Use damage code 4901M 01 for ALL repairs performed under this extended warranty
In the technician story, please be explicit in identifying the failure causing part for the claim

Should you have any question, please do not hesitate to open a Warranty Services case online.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Sandy Springs, GA 30328

A Daimler Company
770.705.0600