Exhaust gas aftertreatment
The exhaust gas aftertreatment requires a
reducing agent known as Diesel Exhaust Fluid
(DEF) in order to function correctly. Filling up
the DEF tank is usually part of the service
scope. DEF consumption depends on opera-
tional and driving conditions and it is not nec-
essary to wait until the next scheduled
service to replenish the fluid. Fluid should be
added regularly to the DEF supply reservoir
during vehicle operation or, at the latest, after
receiving the first warning message via the
on-board computer.
To conform to emission regulations, you must
operate the vehicle with DEF and refill the
supply regularly. The engine management
recognizes attempts to operate the vehicle
without DEF, with thinned DEF or with
another reducing agent. After previous warn-
ing messages, the engine management then
prevents a further engine start.
If the DEF level drops below 1.5 US gal
(5.5 l), the first warning message is issued
and a warning tone sounds. After the mes-
sage appears for the first time, and under
normal driving conditions, the remaining DEF
reserve will last for approximately
1000 miles (1600 km) before the next mes-
sage.
After that, the 0.8 US gal (3.0 l)reserve mark
is reached. Once the reserve range has been
reached, you will receive the next warning
message and you will hear a series of warning
tones. After the first message, the DEF
reserve will last for approximately
1,200 miles (1,900 km) until the next mes-
sage is shown. However, you will only be able
to start the engine another 16 times.
You should immediately add 2.0 US gal
(7.6 l) of DEF (Y page 150) or have the DEF
supply reservoir filled at a qualified specialist
workshop.
When the number of remaining engine starts
is 0
0 the engine management prevents the
vehicle being driven at a speed exceeding 5 mph (8 km/h). The
Idle Mode Idle Modemessage
appears in the multifunction display:
If the 00B9 Check Engine indicator lamp lights
up, the exhaust gas aftertreatment is faulty or
an emission-related malfunction has occur-
red (Y page 213). You will then only be able
to drive a maximum 50 mi (80 km) before the
engine management restricts the number of
starts remaining.
If the exhaust gas aftertreatment is faulty,
have it checked and repaired at a qualified
specialist workshop.
Further information on DEF can be found in
the "Refueling" (Y page 149) and "Service
products and capacities" (Y page 324) sec-
tions. Attachments, bodies, equipment and
conversions
General notes !
For safety reasons, have add-on equip-
ment manufactured and installed accord-
ing to the Sprinter body/equipment mount-
ing directives in force. These body/equip-
ment mounting directives ensure that the
chassis and the body form one unit and that
maximum operating and road safety is ach-
ieved.
We recommend for safety reasons that:
R you carry out no other modifications to
the vehicle.
R you obtain the agreement of the distrib-
utor named on the inside of the front
cover for any deviations from the
approved body/equipment mounting
directives.
Approval from certified inspection agen-
cies or official approvals cannot rule out
risks to your safety.
We recommend that you use genuine
Mercedes-Benz parts as well as conversion
parts and accessories that have been specif-
ically approved by Mercedes-Benz for the
type of vehicle. Introduction
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