
Display messages Possible causes/consequences and
0050
0050Solutions 00E2
XX XX
starts
starts remaining
remaining The Diesel Exhaust Fluid (DEF) supply has dropped below the
0.8 US gal (3.0 l) reserve mark.
After the message appears for the first time, the remaining DEF
supply will last for approximately 1000 miles (1600 km). The
engine can then only be started another 16 times.
The number of remaining engine starts
XX XX(1616 to0
0) is shown in the
message every time the engine is started. If the number displayed
is 0 0, the yellow 00B9Check Engine indicator lamp also lights up
and you can only drive the vehicle at a maximum 5 mph
(8 km/h).
X Add at least 2.0 US gal (7.6 l) of DEF (Y page 149).
The display message disappears no more than 20 seconds after
the vehicle has stopped or you have switched on the ignition or
started the engine after refueling. 00E2
Idle Mode Idle Mode In addition, the yellow
00B9Check Engine indicator lamp lights
up.
The vehicle cannot be driven at a speed exceeding 5 mph
(8 km/h). The DEF reducing agent is contaminated, diluted or is not compli-
ant with ISO 22241.
X
Have the DEF tank cleaned and refilled at a qualified specialist
workshop immediately. The exhaust gas aftertreatment is malfunctioning or an emission
relevant malfunction has occurred. This malfunction or defect can
damage the exhaust gas aftertreatment.
X
Visit a qualified specialist workshop immediately. 00AC
Coolant Coolant
Stop,
Stop,turn
turn
engine off
engine off The coolant temperature is too high.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Consult a qualified specialist workshop. 00AC
Coolant Coolant
Stop,
Stop,turn
turn
engine off
engine off The coolant temperature is too high.
If the vehicle is stopped after being subjected to extreme loads,
the coolant warning lamp may come on when the ignition is
switched on or the engine is restarted. Such loads can be, for
example, driving in mountainous terrain or driving with a trailer.
X
Run the engine for approximately 1 minute at idling speed.
X Consult a qualified specialist workshop if the display message
continues to be shown. 214
Display
messagesOn-board computer and displays

Problem Possible causes/consequences and
0050
0050Solutions 0075
The red warning
lamp does not
go out approx-
imately
4 seconds after
the ignition is
switched on, or
it lights up again. The restraint systems have malfunctioned.
G WARNING
If the restraint systems are malfunctioning, individual systems
could be triggered inadvertently or might not be triggered at all in
the event of an accident.
There is an increased risk of injury and accidents.
X Drive on with care.
X Visit a qualified specialist workshop immediately. 003D
The red battery
indicator lamp is
lit while the
engine is run-
ning. The battery is not being charged. Possible causes are a defective
alternator or a torn poly-V-belt.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the poly-V-belt.
X If the poly-V-belt is torn: do not continue driving. Consult the
nearest qualified specialist workshop.
X If the poly-V-belt is not damaged: have the vehicle checked as
soon as possible by a qualified specialist workshop. 003D
The red battery
indicator lamp is
lit while the
engine is run-
ning. The battery is faulty.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not continue driving under any circumstances.
X Consult a qualified specialist workshop. 0026
The yellow brake
pad wear indica-
tor lamp is lit
after the engine
is started or
while the vehicle
is in motion. The brake pads/linings have reached their wear limit.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Have the brake pads/linings replaced as soon as possible at a
qualified specialist workshop. 00B2
The yellow
engine oil level
warning lamp is
lit after the
engine is started
or while the vehi-
cle is in motion. The oil level has dropped to the minimum level.
X
Check the engine for oil loss.
X If oil loss is detected: consult a qualified specialist workshop
immediately.
X If no oil loss is detected: check the oil level and add engine oil
(Y page 253). Indicator and warning lamps in the instrument cluster
225On-board computer and displays Z

Problem Possible causes/consequences and
0050
0050Solutions 00B2
The yellow
engine oil level
warning lamp
flashes and the
warning buzzer
sounds after the
engine is started
or while the vehi-
cle is in motion. On vehicles with a diesel engine, the oil level display additionally
appears in the display, e.g.
– 2.0 qts
– 2.0 qts (Canada:– 2.0 ltr – 2.0 ltr).
There is not enough or no oil in the engine.
There is a danger of engine damage.
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the oil level with the oil dipstick (Y page 253).
X If the engine oil level is correct: have the malfunction rectified
immediately at a qualified specialist workshop.
X If the engine oil level is too low: have the vehicle towed to a
qualified specialist workshop. 00B2
The yellow
engine oil level
warning lamp
lights up and the
warning buzzer
sounds after the
engine is started
or while the vehi-
cle is in motion. The engine oil level is above the maximum level.
There is a risk of damaging the engine or catalytic converter.
X
Check the oil level.
X If the oil level is too high: have the engine oil extracted as soon
as possible at a qualified specialist workshop.
X If the oil level is correct: have the malfunction rectified as soon
as possible at a qualified specialist workshop. 00B2
On vehicles with
a diesel engine,
the yellow
engine oil level
warning lamp
lights up repeat-
edly during the
journey. There is a malfunction in the engine oil level display.
X
Have the vehicle checked immediately at a qualified specialist
workshop. 003F
The yellow cool-
ant level warning
lamp lights up
while the engine
is running. The coolant level is too low.
Never run the engine if the coolant level is too low. The engine
could overheat and be damaged.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Switch off the engine and let it cool down.
X Add coolant and be sure to observe the warning notes
(Y page 255).
X If you need to add coolant frequently, have the engine cooling
system checked at a qualified specialist workshop. 226
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
0050
0050Solutions 00AC
The red coolant
warning lamp is
lit while the
engine is run-
ning. The coolant temperature is too high.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Consult a qualified specialist workshop. 00AC
The red coolant
warning lamp is
lit while the
engine is run-
ning. The coolant temperature is too high.
If the vehicle is stopped after being subjected to extreme loads,
the coolant warning lamp may come on when the ignition is
switched on or the engine is restarted. Such loads can be, for
example, driving in mountainous terrain or driving with a trailer.
X
Run the engine for approximately 1 minute at idling speed.
X Consult a qualified specialist workshop if the display message
continues to be shown. 00B5
0077
The yellow
reserve fuel
warning lamp is
on. At the same
time,
0 0, appears
in the fuel tank
content display
while the engine
is running,
although there is
fuel in the fuel
tank. The fuel filler cap is not closed.
X
Close the fuel filler cap.
You will hear a click when the fuel filler cap is closed fully.
X If the malfunction continues to be displayed, have it rectified
immediately at a qualified specialist workshop. 00B9
The yellow
engine diagnos-
tic indicator
lamp is lit up or
flashes while the
engine is run-
ning. You have used up all fuel in the tank.
The engine is running in emergency mode.
X
Refuel at the nearest gas station (Y page 148).
X Bleed the fuel system (Y page 143).
X Start the engine three to four times in succession after refueling.
Emergency running mode will be canceled. The vehicle does not
need to be checked. 00B9
The yellow
engine diagnos-
tic indicator
lamp is lit up or
flashes while the
engine is run-
ning. The injection control is malfunctioning.
The engine is running in emergency mode.
Engine power output may be reduced.
X
Have the vehicle checked at a qualified specialist workshop as
soon as possible.
In some states it is legally prescribed that after the check engine
indicator lamp lights up you must contact a qualified specialist
workshop immediately. Observe the legal requirements. Indicator and warning lamps in the instrument cluster
227On-board computer and displays Z

Problem Possible causes/consequences and
0050
0050Solutions 00B9
The yellow
Check Engine
indicator lamp is
lit while the
engine is run-
ning. The exhaust gas aftertreatment is malfunctioning or an emission
relevant malfunction has occurred. This malfunction or defect can
damage the exhaust gas aftertreatment.
After the first message and under normal operating conditions,
you can drive on for up to approximately 500 mi (800 km). Then
a warning tone sequence sounds and the engine can only be
started another 16 times.
X
Observe the messages in the display.
X Have the exhaust gas aftertreatment checked immediately at a
qualified specialist workshop.
In some states it is legally prescribed that after the check engine
indicator lamp lights up you must contact a qualified specialist
workshop immediately. Observe the legal requirements. 0028
If you turn the
key to posi-
tion2in the igni-
tion lock, the
yellow preglow
indicator lamp
remains lit for
approximately
1 minute. Or the
yellow preglow
indicator lamp
lights up for
approximately
1 minute while
the engine is
running. At extremely low temperatures, the engine may not start.
There is a malfunction in the preglow system.
X
Have any malfunction rectified at a qualified specialist work-
shop. 009F
The yellow air fil-
ter indicator
lamp is lit while
the engine is
running. The service limit for the air filter has been reached. The air filter
is dirty.
X
Have the air filter element replaced as soon as possible at a
qualified specialist workshop. 228
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
0050
0050Solutions 0077
The yellow tire
pressure moni-
tor warning lamp
comes on. G
WARNING
The tire pressure monitor indicates a rapid or severe loss of pres-
sure in at least one tire.
X Stop the vehicle without making any extreme steering maneu-
vers or braking suddenly. Pay attention to the traffic conditions
while doing so.
X Check the tires and correct the tire pressure. If a tire continues
to lose pressure, it must be replaced. Replace damaged tires
immediately.
The warning light will go out after the flat tire has been rectified
and you have been driving for a few minutes.
X Vehicles with steering wheel buttons: also observe the mes-
sages in the display (Y page 199).0077
US vehicles
only:
The yellow tire
pressure moni-
tor warning lamp
flashes for
60 seconds and
then remains lit. The tire pressure monitor has malfunctioned.
X
Have the tire pressure monitor and the wheels checked at a
qualified specialist workshop. 00B8
The yellow water
separator indi-
cator lamp is lit
when the igni-
tion is switched
on. The water that has collected in the water separator of the fuel filter
has reached the maximum level.
X
Drain the water separator (Y page 257).00B1
The yellow
washer fluid
level indicator
lamp for the
windshield
washer/head-
lamp cleaning
system is lit
after the engine
is started or
while the vehicle
is in motion. The water level is too low.
X
Add washer fluid (Y page 257). Indicator and warning lamps in the instrument cluster
229On-board computer and displays Z

Problem Possible causes/consequences and
0050
0050Solutions 0076
If you turn the
key in the igni-
tion lock to posi-
tion2, the red
seat belt warn-
ing lamp lights
up for approx-
imately
6 seconds. The warning lamp is to remind you to fasten your seat belt.
X
Fasten seat belt (Y page 48).0049
When the key is
turned to posi-
tion2in the igni-
tion lock, the
yellow bulb
warning lamp
lights up. One of the exterior lighting bulbs is faulty, with the exception of
the perimeter lamps and the trailer lighting.
i
Depending on the equipment, the bulb failure indicator can fail
for all lamps with the exception of the turn signal lamps.
X Replace the faulty bulb as soon as possible (Y page 100).003E
The yellow "door
open" indicator
lamp is lit while
driving. The vehicle is moving without all doors or the hood being closed.
X
Close the doors or hood. 003E
The yellow "door
open" indicator
lamp is lit. The electrical step has retracted or extended only partially or not
at all.
X
Make sure there is sufficient free space for the electrical step.
X Open or close the sliding door again.
X If the electrical step still does not extend or retract fully, push
the step in manually (Y page 74). Before stepping out, remind
the passengers that the step is missing. 230
Indicator and warning lamps in the instrument clusterOn-board computer and displays

Stowage compartment under the twin
co-driver's seat Twin co-driver's seat (example: Cargo Van)
You can stow various articles in the stowage
compartment under the twin co-driver's seat.
X To fold a seat cushion forwards: lift the
seat cushion out of front anchorage 0043.
X Pull the seat cushion forwards slightly and
out of rear anchorage 0044.
X Fold the rear edge of the seat cushion up.
X To fold the seat cushion back: fold down
the seat cushion by the rear edge.
X Slide the seat cushion under the seat back-
rest into rear anchorage 0044.
X Push down on the seat cushion at the front
until it engages in front anchorage 0043.Stowage compartment under the rear
bench seat G
WARNING
Always secure the folded-up seat cushion
with the retainer loop. The seat cushion could
otherwise drop down unexpectedly and
thereby cause injury to yourself or others. G
WARNING
When folding down the seat cushion, make
sure that nobody can become trapped.
! The retainer loop is neither a grab handle
for people to use nor a securing point for
loads. It may tear if used incorrectly. For vehicles with a crewcab, you can use the
stowage compartment under the rear bench
seat to safely store tools and other small
items.
X
To fold up the rear bench seat: lift seat
cushion 0043out of the front anchorage and
fold it upwards in the direction of the arrow. Retainer loops
0044are secured to the outer
head restraints. Stowage spaces and stowage compartments
235Stowing and features Z