Mercedes-Benz Metris BM 447 Technical Document

Body & Equipment Guideline for Vans
Metris
Date of Publication - November 2015
© 2015 Mercedes-Benz USA, LLC

Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
! Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version! 2
Contents
1 Introduction........................................... 4
1.1 Overview................................................. 4
1.2 The aim of this guideline......................... 5
1.3 Conventions............................................ 6
1.4 Vehicle safety.......................................... 7
1.5 Technical support ................................... 8
1.6 Contact................................................... 9
1.7 Definitions ............................................ 10
1.8 Vehicle safety.........................................11
1.9 Operational safety................................. 12
1.10 Use of parts .......................................... 13
1.11 Rollover stability of the vehicle ............. 14
2 General and regulatory ...................... 15
2.1 Overview............................................... 15
2.2 Emission and safety information........... 16
2.2.1 Information on vehicle safety standards 17
2.2.2 Information on the reduction of
exhaust emissions ................................ 17
2.2.3 Vehicle noise emission control
information ........................................... 18
2.3 Upfitter responsibilities......................... 19
2.4 Product safety and product liability ...... 20
2.4.1 Product safety....................................... 20
2.4.2 Product liability ..................................... 20
2.4.3 Safety-relevant features........................ 20
2.5 Ensuring traceability ............................. 22
2.6 Trademarks .......................................... 23
3 Product information ........................... 24
3.1 Vehicle and models............................... 24
3.1.1 Vehicle and model designations............ 24
3.1.2 Vehicle and model illustrations ............. 24
3.1.3 Load capacity, van classification........... 25
3.2 Breakdown of Vehicle Identification
Number (VIN)........................................ 26
3.3 Labels ................................................... 28
4 Planning of bodies .............................. 31
4.1 Selecting the basic vehicle.................... 32
4.1.1 Selecting the suspension package........ 32
!4.2 Vehicle modifications............................ 33
4.3 Dimensions and weights....................... 34
4.4 Vehicle identification data..................... 35
!4.5 Vehicle stability..................................... 36
4.6 Tires...................................................... 37
4.7 Threaded and welded connections ....... 38
4.7.1 Threaded connections .......................... 38
4.7.2 Welded connections.............................. 39
4.8 Soundproofing ...................................... 42
4.9 Maintenance and repairs ...................... 43
4.9.1 Storing the vehicle ................................ 44
4.9.2 Battery maintenance and storage......... 45
4.9.3 Work before handing over the
modified vehicle.................................... 45
4.10 Special equipment ................................ 46
5 Technical threshold values for
planning ............................................... 47
5.1 Threshold values of basic vehicle.......... 47
5.1.1 Steerability............................................ 47
5.1.2 Maximum permissible positions of
center of gravity.................................... 47
5.2 Suspension threshold values ................ 48
!5.2.1 Gross axle weight rating (GAWR) .......... 48
5.2.2 Approved tire sizes ............................... 49
5.2.3 Diameter of turning circle ..................... 49
5.2.4 Modifications to the axles..................... 49
5.2.5 Modifications to the steering ................ 50
5.2.6 Modifications to the brake system........ 50
5.2.7 Modifications to springs, suspension
strut mounts/shock absorbers............. 50
5.2.8 Modifications to axle settings ............... 50
5.3 Threshold values of body .......................51
5.4 Bodyshell threshold values ................... 52
5.4.1 Modifications to the bodyshell.............. 52
5.4.2 Vehicle roof/roof load .......................... 52
5.4.3 Threshold values for fastening points ... 52
5.5 Threshold values for
electrics/electronics ............................ 53
5.5.1 Electric wiring/fuses............................. 53
5.6 Threshold values for additional
assemblies............................................ 54
6 Damage prevention ............................ 55
6.1 Brake hoses/cables and lines............... 55
6.2 Welding work ........................................ 56
6.3 Corrosion protection measures ............ 58
6.4 Painting work/preservation work ......... 60
7 Modifications to the basic vehicle.....61
7.1 Chassis ..................................................61
7.1.1 General information on the chassis .......61
7.1.2 Springs/shock absorbers ......................61
7.1.3 Brake system ........................................ 62
7.1.4 Air suspension ...................................... 64
7.1.5 Wheels and tires ................................... 64
7.1.6 Spare wheel ......................................... 64
7.2 Bodyshell/body .................................... 65
7.2.1 General information on the
bodyshell/body..................................... 65
7.2.2 Partition................................................ 67
7.2.3 Sidewall, windows, doors and flaps ...... 67
7.2.4 Fenders and wheel wells....................... 68

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Contents
7.2.5 Underfloor paneling .............................. 68
7.2.6 Modifications to the roof structure ....... 69
7.3 Engine peripherals/drivetrain ............... 71
7.3.1 Fuel system........................................... 71
7.3.2 Exhaust system..................................... 71
7.3.3 Engine cooling ...................................... 72
7.3.4 Engine air intake ................................... 72
7.3.5 Propeller shafts..................................... 72
7.4 Interior.................................................. 73
7.4.1 General information .............................. 73
7.4.2 Safety equipment.................................. 74
7.4.3 Seats..................................................... 79
7.4.4 Reducing interior noise ......................... 80
7.4.5 Ventilation............................................. 81
7.5 Additional assemblies ........................... 82
7.5.1 Auxiliary heater .................................... 82
7.6 Attachments ......................................... 83
7.6.1 Attachment above cab ......................... 83
7.6.2 Roof racks ............................................ 83
7.6.3 Fitted shelving ...................................... 83
7.6.4 Trailer hitch........................................... 90
8 Design of bodies ................................. 91
8.1 Modifications to the interior.................. 91
8.1.1 Modifications in the cockpit area.......... 91
8.1.2 Retrofitting additional seats ................. 91
8.2 Refrigerated vehicles/
temperature-controlled vehicles ........... 93
8.3 Motorhomes ......................................... 94
8.4 Retrofitting a pop-up roof...................... 95
8.5 Government vehicles ............................ 96
9 Electrical system ................................ 97
!9.1 General information .............................. 97
9.2 Electromagnetic compatibility (EMC) .... 98
9.3 Battery.................................................. 99
9.3.1 Main battery ......................................... 99
9.3.2 Retrofitting a battery main switch......... 99
9.3.3 Additional battery ................................ 99
9.3.4 Backup battery (code E34)...................101
9.3.5 Emergency battery...............................101
9.3.6 Battery maintenance and storage .......101
9.4 Interfaces/electrical lines................... 102
9.4.1 Electrical lines/fuses.......................... 102
9.4.2 Cable extension .................................. 102
9.4.3 CAN bus and networking .................... 103
9.4.4 Connecting additional electrical
consumers .......................................... 104
9.4.5 Current consumption via
terminal strip ...................................... 105
9.4.6 Retrofitting an alternator .................... 105
9.4.7 Vehicle speed signal ........................... 106
9.5 Lighting............................................... 107
9.5.1 Adjusting the headlamps .................... 107
9.5.2 Covering of lighting equipment ........... 107
9.5.3 Exterior lamps..................................... 108
9.5.4 Interior lamps...................................... 108
9.6 Mobile communications systems........ 109
9.6.1 Equipment........................................... 109
9.6.2 Antenna connection and cable
routing (radio frequency) .................... 109
9.7 Driver assistance systems ...................110
9.7.1 Electronic Stability Program (ESP®).....110
9.7.2 Crosswind Assist .................................112
9.7.3 COLLISION PREVENTION ASSIST.........112
9.7.4 Blind Spot Assist..................................114
9.7.5 Highbeam Assist and Lane Keeping
Assist...................................................115
9.7.6 Rain sensor/Headlamp Assist .............116
9.7.7 Tire pressure monitoring......................116
9.7.8 Parking assistance systems .................117
9.8 Parameterizable special module (PSM) 119
9.8.1 PSM functions..................................... 120
9.8.2 PSM interfaces ....................................121
9.8.3 ABH-CAN .............................................121
9.9 Automatic start/stop system.............. 122
10 Calculations....................................... 123
10.1 Center of gravity ................................. 123
10.1.1 Determination of the center of
gravity in the x-direction ..................... 123
10.1.2 Determination of the center of
gravity in the z-direction ..................... 125
Index ............................................................ 129

Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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1.1 Overview
1 Introduction
1.1 Overview
This is the Body & Equipment Guideline of
Mercedes-Benz USA LLC (MBUSA) and Mercedes-Benz
Canada (MBCAN) for the Mercedes-Benz Metris Van -
BM 447.
This publication contains technical information for
upfitters who install equipment in the Mercedes-Benz
Metris ("Metris") or modify the vehicle and helps them
to comply with their legal obligations.
The specifications and descriptions in this manual,
including legal information, are considered to be cor-
rect at the time of publication. Nevertheless, upfitters
must obtain legal advice to ensure their compliance
with the applicable laws and regulations. This manual
is updated regularly when new products are introduced
and additional information is made available on these
products. The upfitter is responsible for ensuring that
they always use the current valid version.
Read the Body & Equipment Guideline before modifying
or installing equipment in or on a Metris vehicle and
contact UPFITTER MANAGEMENT VANS USA/Canada if
necessary.
This manual and the technical service bulletins can be
accessed through the following website:
www.UpfitterPortal.com
Options and model information can be found on the
following website:
www.mbvans.com
Further technical details can be obtained upon written
request from the MBUSA and MBCAN representative
listed below.
UPFITTER MANAGEMENT VANS USA/Canada
Contact person
Department: UPFITTER MANAGEMENT VANS
Contact: Via website or e-mail
Website www.UpfitterPortal.com

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1.2 The aim of this guideline
1 Introduction
1.2 The aim of this guideline
This Body & Equipment Guideline is divided into 10
interlinked chapters to help you find the information
you require quickly:
1 “Introduction” (ePage 4)
2 “General and regulatory” (ePage 15)
3 “Product information” (ePage 24)
4 “Planning of bodies” (ePage 31)
5 “Technical threshold values for planning”
(ePage 47)
6 “Damage prevention” (ePage 55)
7 “Modifications to the basic vehicle”
(ePage 61)
8 “Design of bodies” (ePage 91)
9 “Electrical system” (ePage 97)
10 “Calculations” (ePage 123)
Appendix:
“Index” (ePage 129)

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1.3 Conventions
1 Introduction
1.3 Conventions
The following conventions are used in this guideline:
aWARNING
Warning notes draw attention to issues which could
endanger the health or life of yourself or others.
HEnvironmental note
An environmental note gives you recommendation
on the protection of the environment.
!Note
This note draws attention to possible damages to the
vehicle.
iAdditional information
This note points out any additional information.
ePage This symbol specifies the page that con-
tains further information on this subject.

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1.4 Vehicle safety
1 Introduction
1.4 Vehicle safety
aWARNING
Before starting to install non-MB bodies or equip-
ment, please read the relevant sections of this Body
& Equipment Guideline, the instructions and infor-
mation from the equipment supplier and the detailed
operator's manual for the basic vehicle. You could
otherwise fail to recognize dangers, which could
result in injury to yourself or others.
Notes on vehicle safety
We recommend to use genuine Mercedes-Benz parts,
major assemblies, modification or accessory parts
which are suitable for the respective vehicle model.
Do not use parts, assemblies, conversion parts or
accessories that are not recommended, as these may
compromise safety, durability or product integrity.
!Note
Please ensure that you observe the national vehi-
cle certification regulations because body-related
vehicle modifications can result in the upfitter being
legally obliged to have the vehicle recertified. This
applies in particular, to:
• modifications which change the vehicle category
under certification legislation
• modifications which could endanger road users,
or
• modifications which adversely affect exhaust
emissions or noise levels.
Further information and technical data in the form of
2D drawings can be obtained as separate documenta-
tion from the aforementioned website.
The table of contents in PDF format is linked to help
you find the information you require quickly.
Always ensure that the threshold values specified in
chapter 5 "Technical threshold values for planning"
(ePage 47) are met.
Chapters 7 “Modifications to the basic vehicle”
(ePage 61) and 8 “Design of bodies” (ePage 91)
are the most important sources of technical informa-
tion in this document.

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1.5 Technical support
1 Introduction
1.5 Technical support
Modifications performed by the upfitter must not impair
the safety of the Metris. Through their representative,
UPFITTER MANAGEMENT VANS, MBUSA and MBCAN
provide support on Metris vans including technical
data, drawings and product brochures. Nevertheless,
the upfitter is responsible for ensuring that their modifi-
cations do not impair the safety of the vehicle.
MBUSA and MBCAN, represented by UPFITTER MAN-
AGEMENT VANS, are not responsible for approving or
rejecting modifications or equipment installations on
the Metris, which are carried out by upfitters, dealers
or other parties. This is because MBUSA and MBCAN
as well as their representative UPFITTER MANAGEMENT
VANS do not assess the upfitters or their manufactur-
ing techniques and also accept no responsibility as the
final-stage manufacturer or for the resulting product
liability.

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1.6 Contact
1 Introduction
1.6 Contact
Please contact the representative of MBUSA and
MBCAN for technical support and further information:
UPFITTER MANAGEMENT VANS USA/Canada
Contact person
Department: UPFITTER MANAGEMENT VANS
Contact: Via website or e-mail
Website www.UpfitterPortal.com

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1.7 Definitions
1 Introduction
1.7 Definitions
Upfitter
Upfitters are Vehicle Alterers and Equipment Manufac-
turers.
Complete vehicle
A complete vehicle is a vehicle which requires no
further manufacturing steps in order to perform its
intended function, except for the addition of readily
integrated components such as mirrors, wheels or tire/
rim assemblies or finishing operations such as painting.
Completed Metris "as delivered"
A completed Metris "as delivered" is a Metris which has
been manufactured by Daimler AG, possibly reassem-
bled by a representative of Daimler AG, and which com-
plies with all relevant laws and regulations and which is
supplied as a complete vehicle (cargo van or passenger
van) to a dealer, upfitter or other party involved in the
manufacturing and marketing of new motor vehicles
and equipment.
DG parts
DG parts (Daimler Group) are genuine parts and genu-
ine accessories intended for installation or attachment
in or on vehicles, components, major assemblies and
modules, including exchange and replacement parts,
which are supplied by MBUSA and MBCAN or a parent
company, subsidiary or company-owned sales and
service outlet.
Dealer
A dealer is a company which is authorized by MBUSA
and MBCAN to sell and provide services for Metris
vehicles.
Vehicle alterer
A vehicle alterer is a person or company which modifies
a previously certified vehicle and, in doing so, performs
work which extends beyond the addition, replacement
or removal of readily attachable parts.
Readily attachable parts include, for example, mirrors,
tire/rim assemblies or minor finishing operations such
as painting. Vehicle alterers are responsible for ensur-
ing that the previously certified vehicle continues to
meet all emissions and FMVSS/CMVSS standards.
Comprehensive legal information can be found under:
www.nhtsa.gov
www.epa.gov
www.arb.ca.gov
www.tc.gc.ca

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1.8 Vehicle safety
1 Introduction
1.8 Vehicle safety
aWARNING
Read the relevant section of the detailed operating
instructions covering installation work before install-
ing, adding, mounting or modifying any assemblies.
If you do not read this information, there is a risk
that you may overlook hazards which could result in
serious injury or death.
We recommend that you use the parts, major assem-
blies, conversion parts and accessories that are rec-
ommended by MBUSA and MBCAN for the vehicle
model concerned.
All vehicle modifications, which affect the certifi-
cation of the vehicle, may result in hazards to road
users or could have an adverse effect on exhaust
and noise emissions.
The use of parts, major assemblies, conversion parts
or accessories which have not been recommended
may jeopardize the safety of the vehicle.
Make sure that you comply with all of the relevant
laws and regulations. Please note that any retrofit-
ting or vehicle modifications can result in a legal
obligation to have the vehicle recertified. Further
legal information can be found in section 2.1 “Over-
view” (ePage 15) and in section 2.2 “Emission
and safety information” (ePage 16).

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1.9 Operational safety
1 Introduction
1.9 Operational safety
aWARNING
Work incorrectly carried out on equipment and its
software can prevent this equipment from working.
Since the electronic systems are networked, this can
also affect systems that have not been modified.
Malfunctions in the electronic systems can seriously
jeopardize the operational safety of the vehicle. In
this case, no warranty can be provided.
Have work on or modifications to electronic compo-
nents carried out at a qualified specialist workshop
which has the necessary expertise and tools to carry
out the work required. Mercedes-Benz recommends
that you use a Mercedes-Benz Metris Service Center
for this purpose.
In particular, work relevant to safety or on safety-re-
lated systems must be carried out at a qualified
specialist workshop.
Some of the safety systems only function when the
engine is running. For this reason, do not switch
off the engine when the vehicle is in motion. If the
engine is switched off while driving, this can have
negative effects on the brake system, driving stabil-
ity and handling characteristics. This can result in
serious injury or death.

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1.10 Use of parts
1 Introduction
1.10 Use of parts
aWARNING
Daimler AG requires the use of genuine parts, major
assemblies, conversion parts and accessory parts
from DG, which have been explicitly approved by
the manufacturers of the Metris van. This ensures
that upfitters continue to comply with the legal
regulations covering these components or equip-
ment items, while also ensuring the ongoing safe
operation of Metris vehicles. In areas which are not
subject to legal regulations, upfitters may use other
components, conversion parts and accessory parts
and adopt the warranty provided by the manufac-
turer of these parts.
If conversion parts cause damage to genuine DG
parts, the warranty for the genuine DG parts is ren-
dered void.
The upfitter is responsible for ensuring the safety of
the vehicle when parts other than genuine
Daimler AG accessories or replacement parts are
used.

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1.11 Rollover stability of the vehicle
1 Introduction
1.11 Rollover stability of the vehicle
aWARNING
Rollover stability is an important factor in the safety
design of a vehicle. The stability is affected by a wide
range of factors such as the vehicle configuration,
suspension, track width, tire width and tire pressure.
The load type and weight (payload), size, shape
and center of gravity height are also very important
factors. Modifications or the installation of additional
accessories on or in a Metris vehicle by an upfitter
or vehicle alterer can therefore affect the rollover
stability of the vehicle.
The Office of Vehicle Safety Research of the NHTSA
(National Highway Traffic Safety Administration)
has carried out research in this area and developed
guidelines for improving rollover stability. Upfitters
should contact the office and/or view the website of
the NHTSA (www.nhtsa.gov) for further information.

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2.1 Overview
2 General and regulatory
2.1 Overview
The US and Canadian authorities have developed
emissions standards and safety standards for motor
vehicles, new engines and/or new vehicles and new
accessories taking into account the Clean Air Act, the
Noise Control Act and the National Traffic and Motor
Vehicle Safety Act in the USA and the Motor Vehicle
Safety Act in Canada. These laws apply to the origi-
nal equipment manufacturers of the Mercedes-Benz
Metris, dealers, upfitters and other parties involved in
the manufacture and marketing of new motor vehicles
and new accessories.
Completed Metris vehicles "as delivered" have been
proven to fulfill the aforementioned applicable stan-
dards. Conformity markings on Metris vehicles and
engines indicate the status of initial conformity on the
date of manufacture by Daimler AG (DAG).
Upfitters and dealers, who perform modifications which
may affect the final certification of the engine, the
vehicle or the equipment, take over sole responsibility
for the vehicle.
Upfitters must obtain legal advice regarding the certifi-
cation of the vehicle.
Upfitters are responsible for ensuring that modifica-
tions of this kind do not impair the safety of the vehicle.
For further information on the applicable exhaust emis-
sion and noise standards of the USA and California,
please contact the Environmental Protection Agency
(EPA) and the California Air Resources Board (CARB).
For further information on US vehicle safety standards,
please contact the National Highway Traffic Safety
Administration (NHTSA). Information on the Canadian
standards can be obtained from the Canadian environ-
mental and transport authorities (Transport Canada).
Upon completion of a modified vehicle, the upfitter is
legally obliged to prove that the vehicle continues to
fulfill all applicable safety standards and guidelines for
motor vehicles of the USA and Canada (USA: Title 49 of
the Code of Federal Regulations S567.7, Clean Air Act
section 203(a) and under the provisions of EPA-CFR,
part 86 section 86.09911; Emissions standards for
1999 and later model year heavy-duty diesel engines
and vehicles). Furthermore, the modified vehicle must
comply with all emissions regulations of the USA,
Canada and/or California. In the USA, the sale of a new
vehicle which does not comply with the regulations
incurs a fine of up to US$25,000 (USA) or US$5000/
US$1000 per vehicle (California) which does not com-
ply with the emissions regulations/safety specifica-
tions. In addition, a recall and other sanctions may be
ordered.
The upfitter is obliged to certify the modified vehicle in
accordance with Title 49 C.F.R. §§567.5 - 567.7 in the
USA and in accordance with Section 9 of the Canadian
Motor Vehicle Safety Regulations in Canada.
Daimler AG will not provide any opinion on the confor-
mity of a modified vehicle with the safety standards
for motor vehicles in the USA or Canada where its
conformity could be affected by vehicle modifications.
The upfitter is responsible for proving that the vehicle
corresponds to all standards covering the vehicle mod-
ification.

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2.2 Emission and safety information
2 General and regulatory
2.2 Emission and safety information
Daimler AG certifies that completed Metris vans "as
delivered", which are supplied by MBUSA and MBCAN
to dealers or upfitters, are compliant with the emis-
sions and safety standards of the USA and Canada at
the time of manufacture. If the vehicle is modified after
delivery by MBUSA and MBCAN, the upfitter and/or
dealer assumes legal accountability.
This section contains general information on the
applicable emissions and safety standards at the time
of vehicle manufacture. This section is intended to
facilitate understanding of the emissions and noise
standards of the US-EPA and CARB, the Federal Motor
Vehicle Safety Standards (FMVSS) and the Canadian
Motor Vehicle Safety Standards (CMVSS) among upfit-
ters. UPFITTER MANAGEMENT VANS will not approve
and does not recommend any modifications or installa-
tions on Metris vehicles, which impair compliance with
EPA, CARB, FMVSS or CMVSS standards or jeopardize
the safety of the vehicle.
If you have any questions about the content of this sec-
tion, please contact the MBUSA and MBCAN represen-
tatives listed below:
Contact person
Name: Michael D. Scott
Title: Department Manager
Depart-
ment:
Regulatory Mgt. & Campaigns Vans
Mercedes-Benz USA
Contact: Contact via website:
Website www.UpfitterPortal.com
Contact person
Name: Adrian Coleman
Title: National Manager
Depart-
ment:
Government & Regulatory Affairs
Mercedes-Benz Canada, Inc.
Contact: Contact via website:
Website www.UpfitterPortal.ca
1. Canada
2. Contact
Modifications to the certified configurations for the
engine settings, such as the settings for fuel through-
put, injection times, calibration and position of the
emission controller unit, calibration and position of the
boost pressure system and the cooling system, are
prohibited.
The Clean Air Act prohibits all persons, including but
not limited to dealers and upfitters, from removing or
disabling any equipment or components of a vehicle
engine which are installed for the purpose of compli-
ance with the act.

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2.2 Emission and safety information
2 General and regulatory
2.2.1 Information on vehicle safety stan-
dards
Regulation 40 C.F.R. 567 in the USA and Section 9 of
the Canadian Motor Vehicle Safety Regulations oblige
manufacturers of the various stages of the vehicle man-
ufacturing process to perform certification in accor-
dance with FMVSS and/or CMVSS standards. This cer-
tification is carried out on a self-certification basis i.e.
the manufacturer proves that the relevant standards
have been fulfilled and declares the conformity of the
respective vehicle stage accordingly. This declaration of
conformity takes the form of a corresponding notice or
specific logo on the identification plate of the vehicle.
Accordingly, upfitters and dealers must carefully read
all of the legal requirements to ensure that they comply
with the applicable standards.
Please consult an attorney to ensure your compliance
with the applicable laws and standards.
All vehicles manufactured by Daimler AG fulfill all of
the relevant FMVSS and CMVSS standards. If mod-
ifications are made to a vehicle, the upfitter must
make sure that the modified vehicle complies with all
of the relevant FMVSS and CMVSS standards as per
49 C.F.R. §§567.5 - 567.7 or Section 9 of the Canadian
Vehicle Safety Regulations and must have the vehicle
recertified if necessary.
Vehicle alterers will find relevant information on the
following website:
www.nhtsa.gov.
www.epa.gov
www.arb.ca.gov
www.tc.gc.ca
2.2.2 Information on the reduction of
exhaust emissions
The Mercedes-Benz M274 engines of the Metris are
certified in accordance with the requirements of the
US Environmental Protection Agency (EPA), the Cana-
dian environmental authorities and the CARB and fulfill
the national exhaust emission standards in accor-
dance with Title II, Section 206 of the Clean Air Act
and 40 C.F.R. 86. Proof of certification is provided by
means of a Vehicle Emission Control Information (VECI)
certification label (see chapter “Vehicle serial number
from manufacturing plant” (ePage 27)), which is
installed on the front crossmember on gasoline vehi-
cles.
The CARB regulations require that the emis-
sions-related components used in a vehicle oper-
ate properly for the entire specified service life of
the vehicle. The specified service life is 5 years or
100,000 miles/161,934 kilometers (SHORT-TERM
EMISSION CONTROL SYSTEM) or 7 years and
70,000 miles/113,654 kilometers (LONG-TERM EMIS-
SION CONTROL SYSTEM), whichever comes first. To
ensure that these components operate properly, end
users must use the appropriate fuels and lubricants
and must maintain these components in accordance
with the operator's manual and service booklet.
There are also requirements regarding the applicable
noise control packages, which have been tested for
over 100% reduction in noise pollution under the afore-
mentioned noise standards. Final-stage manufacturers
should consult an attorney with respect to compliance
with the applicable regulations and laws whenever they
modify or convert a vehicle. It is prohibited by law to
modify equipment and components used for sound-
proofing.
In particular, removing or disabling equipment and
components, which have been installed in a new
vehicle for the purpose of soundproofing, is prohibited.
This equipment includes noise emission-related compo-
nents e.g. engine settings including governor settings,
components of the exhaust system and intake air sys-
tem, radiator, shield, fan/drive, acoustic shielding and
acoustic insulation.

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2.2 Emission and safety information
2 General and regulatory
2.2.3 Vehicle noise emission control infor-
mation
All Metris vehicles are equipped with extensive NVH
accessories.
Upfitters should consult an attorney regarding the
applicable laws and regulations to determine whether
modifications carried out on the Metris by the upfitter
could jeopardize the certification of the vehicle.
The upfitter is also responsible for ensuring that the
modifications do not impair the safety of the vehicle.

Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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2.3 Upfitter responsibilities
2 General and regulatory
2.3 Upfitter responsibilities
All complete vehicles of the Metris model manufac-
tured by Daimler AG are certified in accordance with
the exhaust emission regulations. A corresponding
certification label with information on exhaust emis-
sion control is attached. A completed Metris van "as
delivered" is certified in accordance with the applicable
FMVSS and CMVSS standards. A corresponding notice
and/or logo can be found on the identification plate.
If these Metris vehicles are modified by the installation
of additional equipment, the upfitter becomes responsi-
ble for conformity of the modified vehicle with respect
to all of the applicable safety and emissions regulations
affected by their modification, including labeling and
documentation.
Chapter 2.1 “Overview” (ePage 15) of this guide-
line contains general information on modifications for
upfitters. The provisions of 49 C.F.R §§567.5 - 567.7
and Section 9 of the Canadian Motor Vehicle Safety
Regulations define the legal obligations of upfitters to
comply with vehicle safety standards. These provisions
are available in full at
www.nhtsa.gov
www.tc.gc.ca
Upfitters should obtain legal advice regarding these
obligations.
For all other modifications and installations made by an
upfitter, the following applies:
• Do not modify Metris components which are
located in front of the rear panel of the cab (on
Metris models with a partition) or in front of the
seating reference point of Metris vehicles, unless
you are installing approved components (e.g. air
conditioning system, radio), which have been
approved or recommended by Daimler AG, MBUSA,
MBCAN or their representative UPFITTER MANAGE-
MENT VANS.
• Do not modify the position or impair the function-
ality and/or clearance of movable chassis com-
ponents i.e. axles, springs, drive shafts, steering
systems, brake systems, gearshift linkages, exhaust
systems etc.
• Do not modify, impair or damage the Metris sub-
structure and do not perform any drilling on the
substructure.
• Do not modify, damage or change the position of
the fuel system, seat belt assemblies and anchor-
ages, the brake system or the steering of the
Metris.
• Do not impair the operational safety, roadworthi-
ness or drivability of the Metris by modifying the
body or installing or modifying accessory equip-
ment.
The upfitter is responsible for ensuring that modifica-
tions and installation of equipment do not affect the
safety of the Metris. MBUSA, MBCAN and UPFITTER
MANAGEMENT VANS accept no responsibility for
certification or claims based on warranty entitlements
resulting from modified components, assemblies or
systems including when such modifications cause the
vehicle to no longer comply with emission and vehicle
safety standards or render the vehicle faulty or unsafe
in any other way.

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2.4 Product safety and product liability
2 General and regulatory
2.4 Product safety and product liability
2.4.1 Product safety
Both vehicle manufacturers and upfitters must always
ensure that the products they are responsible for
manufacturing are safe when they are brought into
circulation and do not present a hazard to the user or
to third parties. Otherwise, there may be consequences
under civil, criminal or public law. Every manufacturer is
always liable for the product that it has manufactured.
The manufacturer of attachments, bodies, equipment
or conversions must guarantee compliance with
national product safety legislation.
2.4.2 Product liability
The upfitter bears responsibility for the following fac-
tors:
• The operational and road safety of the body
• The operational and road safety of parts and modi-
fied equipment
• Testing and maintaining the operating and driving
safety of the vehicle after the body/equipment is
mounted (the body and/or equipment must not
have a negative effect on the driving, braking or
steering characteristics of the vehicle)
• Influences of parts or modifications on the chassis
• Consequential damage resulting from the attach-
ment, equipment or modification
• Consequential damage resulting from retrofitted
electrical and electronic systems
• Maintenance of functional reliability and unob-
structed movement of all moving parts of the chas-
sis (e.g. axles, springs, propeller shafts, steering,
gearshift linkages etc.) after mounting the body;
also in cases of diagonal torsion on the vehicle
2.4.3 Safety-relevant features
Components and systems are safety-relevant when
their fault or failure could result in an immediate danger
to the life and limb of road users.
Daimler AG recommends that an assessment of the
safety relevance of the components or functions be
carried out for the following work:
• Modifications on the chassis
• Installations in the vehicle
• Interface between vehicle and body (mechanical
components, electrical/electronic components,
power take-offs, hydraulic components, pneumat-
ics)
A component or function is to be classified as safe-
ty-relevant when at least one of the following ten safety
aspects could reasonably be expected to occur:
• Momentary loss of sight of the road
• Loss of ability to steer
• Loss or partial failure of the braking functions
• Failure of driving functions
• Uncontrolled propulsion
• Sudden failure of driving power
• Escape of fuel/risk of fire
• Loosening of cargo/trailer/parts
• Injury from operation and other functions of the
vehicle
• Occupant protection in accidents