Display messages Possible causes/consequences and
0004 Solutions
0002
dEF Chk In addition, the yellow
0018engine diagnosis indicato rlamp and
the yellow 0009DEF indicator lamp light up and a warning tone
sounds.
The DE Freducing agent is contaminated, diluted or is not
compliant with ISO 22241.
After the first message and under normal operating conditions,
you can drive on for up to approximately 50 miles (80 km). Then
a warning tone sequence sounds and the engine can only be
started another 16 times.
X Have the DEFt ank cleaned and refilled at a qualified specialist
workshop as soon as possible. 0002
dEF Chk In addition, the yellow
0009DEFindicato rlamp lights up and a
warning tone sounds.
The DE Fsupply has dropped below 1. 5USgal (5.5l).
After the message appears for the first time, and under normal
driving conditions, the remaining DEFs upply will last for
approximately 1000 miles (1600 km).
After that, th e0.8 US ga l(3.0 l) reserv emark is reached. A warning
tone sequence sounds and th eengine can then only be started
another 16 times.
X add DEF supply (Y page 143).
After topping up, the system check takes approximately
20 seconds. The 0009DEF indicator lamp then goes out. 0002
StArtS RExx In addition, the yellow
0018engine diagnosis indicator lamp and
the yellow 0009DEF indicator lamp light up and a warning tone
sounds. Awarning tone sequence sounds.
Afte rthe message appears for the first time, the engine can only
be started another 16 times.
The number of remaining engine starts xx (16 to
0 ) is shown in the
message every time the engine is started. Once the number 0 is
shown, the engine can no longer be started. The DEF reducing agent is contaminated, diluted or is not
compliant with ISO 22241.
X
Have the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible. Display messages
195On-board computer and displays Z
Display messages Possible causes/consequences and
0004 Solutions
The exhaus
tgas aftertreatmen tis 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. 0002
StArtS RExx In addition, the yellow
0009DEF indicator lamp lights up and a
warning tone sequence sounds.
The 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 twenty times.
The number of remaining engine starts xx (16 to
0 ) is shown in the
message every time the engine is started. Once the number 0 is
shown, the yellow 0018engine diagnosis indicator lamp lights up
and the engine can no longer be started.
X Add at least 2.0 US gal (7.6l) of DEF (Y page 143).
After topping up, the system check takes approximately
20 seconds. The 0009DEF indicator lamp then goes out. 196
Display messagesOn-board computer and displays
Display messages Possible causes/consequences and
0004 Solutions
000B
Parking brake
Release brake Additionally, a warning tone sounds.
You are driving with the parking brake applied.
X
Release the parking brake ( Ypage 146). 0014
Seatbelt sys.
Visit workshop The belt system has malfunctioned.
G WARNING
In the event of an acciden torarapid deceleration, the seat belts
either cannot protect you as intended.
There is a risk of injury.
X Consult a qualified specialized workshop as soon as possible. SRS
Restraint system
Visit workshop The restraint systems have malfunctioned.
G WARNING
If SRS is 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 Visi taqualified specialist workshop immediately. Lights
Display messages Possible causes/consequences and
0004 Solutions
0002
Low beam left The left-hand low beam is faulty
2
.
X Halogen headlamps: replace the bulb as soon as possible
(Y page 98).
X Bi-Xenon headlamps: consult a qualified specialist workshop
as soon as possible. 0002
Low beam right The right-hand low-beam is faulty
2
.
X Halogen headlamps: replace the bulb as soon as possible
(Y page 98).
X Bi-Xenon headlamps: consult a qualified specialist workshop
as soon as possible. 0002
Cornering lt. left The left-hand cornering light is faulty
2
.
X Replace the bulb as soon as possible (Y page 98).2
Depending on the equipment ,the bulb-failure indicator may not be featured for any lamps other than the
turn signals. Display messages
201On-board computer and displays Z
Display messages Possible causes/consequences and
0004 Solutions
0002
Cornering
lt. right The right-hand cornering ligh
tis faulty 2
.
X Replace the bulb as soon as possible (Y page 98).0002
Lights on
automatical.
Remove key The automatic headlamp feature is active: the light switch is in the
0007
position and you have forgotten to remove the key.
X Remove the key from the ignition lock. 0002
Turn signal left The left-hand turn signal is faulty.
X
Change the bulb as soon as possible in the front (Y page 98) or
rear (Y page 99) indicator lamp. 0002
Turn signal right The right-hand turn signal is faulty.
X
Change the bulb as soon as possible in the front (Y page 98) or
rear (Y page 99) indicator lamp. 0002
Brake lamp left The left-hand brake lamp is faulty.
2
X Replace the bulb as soon as possible (Y page 99).0002
Brake lamp right The right brake lamp is faulty.
2
X Replace the bulb as soon as possible (Y page 99).0002
Third brake lamp The high-mounted brake lamp is faulty.
2
This display message will
only appearifa ll LEDs have failed.
X Consult a qualified specialized workshop as soon as possible. 0002
High beam left The left-hand high-beam is faulty.
2
X Replace the bulb as soon as possible (Y page 98).0002
High-beam right The right-hand high-beam is faulty.
2
X Replace the bulb as soon as possible (Y page 98).0002
License plate lamp Al
icense plate lamp is faulty. 2
X Replace the bulb as soon as possible (Y page 100).0002
Switch off lights You have forgotten to switch off the lights when leaving the
vehicle.
X
Turn the light switch to 000C.2
Depending on the equipment, the bulb-failure indicator may not be featured for any lamps other than the
turn signals. 202
Display messagesOn-board computer and displays
Engine
Display messages Possible causes/consequences and
0004 Solutions
Check Diesel
Exhaust Fluid See
Operator's Manual The Diesel Exhaust Fluid (DEF) supply has dropped below
1.5 US gal (5.5 l).
After the message appears for the first time, and under normal
driving conditions, the remaining DE
Fsupply will last for
approximately 1000 miles (1600 km).
After that, th e0.8 US ga l(3.0 l) reserv emark is reached. A warning
tone sequence sounds and th eengine can then only be started
another 16 times.
X add DEF supply (Y page 143).
After topping up, the system check takes approximately
20 seconds. The display message then disappears. Check Diesel
Exhaust Fluid See
Operator's Manual If the yellow
0018engine diagnosis indicator lamp lights up as
well, the DEF reducing agent is contaminated, diluted or not
compliant with ISO 22241.
After the first message and under normal operating conditions,
you can drive on for up to approximatel y50 miles (80 km). Then
a warning tone sequence sounds and the engine can only be
started another 16 times.
Have the DEF tank cleaned and refilled at a qualified specialist
workshop as soon as possible. 0009
xx
starts remaining The Diesel Exhaus
tFluid (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 100 0miles (1600 km). The
engine can the nonly be started another twenty times.
The numbe rofremaining engine starts xx (16 to
0 ) is shown in the
message every time the engine is started. Once the number 0 is
shown, the yellow 0018engine diagnosis indicator lamp lights up
and the engine can no longer be started.
X Add at least 2.0 US gal (7.6l) of DEF (Y page 143).
After topping up, the system chec ktakes approximately
20 seconds. The display message then disappears. 0009
xx
starts remaining In addition, the yellow
0018engine diagnosis indicator lamp lights
up.
Afte rthe message appears for the first time, the engine can only
be started another 16 times.
The number of remaining engine starts xx (16 to
0 ) is shown in the
message every time the engine is started. Once the number 0 is
shown, the engine can no longer be started. 204
Display messagesOn-board computer and displays
Problem Possible causes/consequences and
0004 Solutions
0008
The red 0008
warning lamp
does not go out
approximately
4s econds after
the ignition is
switched on, or
it lights up again. The restraint systems have malfunctioned.
G WARNING
If SRS is 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. 0010
The red battery
indicator lamp is
lit while the
engine is
running. 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. 0010
The red battery
indicator lamp is
lit while the
engine is
running. 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. 0005
The yellow brake
pad wear
indicator 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. 001D
The yellow
engine oil level
warning lamp is
lit after the
engine is started
or while the
vehicle 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: chec kthe oil level and add engine oil
(Y page 243). 214
Indicator and warning lamps in the instrument clusterOn-board computer and displays
Problem Possible causes/consequences and
0004 Solutions
001D
The yellow
engine oil level
warning lamp
flashes and the
warning buzzer
sounds after the
engine is started
or while the
vehicle is in
motion. On vehicles with a diesel engine, the oil level display additionally
appears in the display, e.g.
– 2.0 qts (Canada:
– 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 243).
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. 001D
The yellow
engine oil level
warning lamp
lights up and the
warning buzzer
sounds after the
engine is started
or while the
vehicle 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. 001D
On vehicles with
a diesel engine,
the yellow
engine oil level
warning lamp
lights up
repeatedly
during the
journey. There is a malfunction in the engine oil level display.
X
Have the vehicle checked immediately at a qualified specialist
workshop. 001A
The yellow
coolant 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 244).
X If you need to add coolant frequently, have the engine cooling
system checked at a qualified specialist workshop. Indicator and warning lamps in the instrument cluster
215On-board computer and displays Z
Problem Possible causes/consequences and
0004 Solutions
0018
The yellow
engine
diagnostic
indicator lamp is
lit up or flashes
while the engine
is running. 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. 0018
The yellow
check engine
indicator lamp is
lit while the
engine is
running. 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. 000D
If you turn the
key to
position 2in the
ignition lock, the
yellow preglow
indicator lamp
remains lit for
approximately
one minute. Or
the yellow
preglow
indicator lamp
lights up for
approximately
one 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
workshop. Indicator and warning lamps in the instrument cluster
217On-board computer and displays Z