Display messages
Possible causes/consequences and 0050 0050Solutions
00B2
Check Engine Oil At
Next Refueling *T
he engine oil le vel has fallen tothe minimum le vel.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Che ckthe engine oil le vel at the next fuel stop.
To p up engine oil (/ page 281).
Obser vethe no tes on engine oil (/ page 344).
003D Stop Vehicle Leave
Engine Running *T
he battery's charge leve l is too lo w. #
Stop in a safe location immediately. Do not continue driving! #
Let the engine run. #
Do not continue driving until the display message goes out.
003D
Stop Vehicle See Opera-
tor's Manual *T
he battery is no longer being charge d and has reached an exces‐
sively low battery charge leve l.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop in a safe location immediately. Do not continue driving. #
Switch off the engine. #
Consult a qualified specialist workshop.
003D
12 V Battery See Opera-
tor's Manual *T
he engine is off and the battery charge leve l is too lo w. #
Switch off electrical consumers that are not required. #
Let the engine runfo r a few minutes or drive an extended dis‐
ta nce.
The battery is charge d.
003D
See Operator's Manual *T
he battery is no longer being charge d.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop in a safe location immediately and switch off the engine. #
Consult a qualified specialist workshop.
00AC
Coolant Too Hot Stop
Vehicle Turn Engine Off *T
he coolant is too hot. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. 366
Display messages and warning and indicator lamps
Display messages
Possible causes/consequences and 0050 0050Solutions &
WARNING Danger of bu rns when opening the hood
If yo u open the hood when the engine has overheated or during
a fire inthe engine compartment, you could come into con tact
wi th hot gases or other escaping operating fluids. #
Before opening the hood, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the
hood closed and call thefire service. &
WARNING Risk of scalding from hot coolant
The engine cooling sy stem is pressurized, particularly when the
engine is warm. If you open the cap, you could be scalded byhot
coolant spr aying out. #
Let the engine cool down before opening the cap. #
When opening the cap, wear pr otective glove s and saf ety
gl asses. #
Open the cap slowly torelease pressure. #
Wait until the engine has cooled down. #
Ensure that the air supply tothe engine radiator is not obstruc‐
te d. #
Avoiding high engine loads, continue tothe nearest qualified
specialist workshop. Ensure that the coolant temp erature dis‐
play remains below 248°F (120°C).
00AC Check Coolant Level See
Operator's Manual *T
he coolant le vel is too lo w. &
WARNING Risk of scalding from hot coolant
The engine cooling sy stem is pressurized, particularly when the
engine is warm. If you open the cap, you could be scalded byhot
coolant spr aying out. #
Let the engine cool down before opening the cap. #
When opening the cap, wear pr otective glove s and saf ety
gl asses. #
Open the cap slowly torelease pressure. *
NO
TEEngine damage due toinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Top up coolant (/ page 282).
Regeneration Not Possi-
ble *N
otall conditions ha vebeen met forre ge neration of the diesel par‐
ticulate filter . #
Continue driving as normal until all conditions ha vebeen met for
re ge neration of the diesel particulate filter.
The load condition of the diesel particulate filter is over 50% and the
message still appears on the instrument clus ter. Displ
aymessa ges and warning and indicator lamps 367
Display messages
Possible causes/consequences and 0050 0050Solutions #
Consult a qualified specialist workshop. DEF (Diesel Exhaust Fluid)
Display messages
Possible causes/consequences and 0050 0050Solutions
00E2
Refill Additive See Opera-
tor's Manual *
In addition, theye llow 00E2 DEF indicator lamp lights up on the
instrument clus ter and a warning tone sounds.
The DEF supply has fallen below thefirs twa rning thre shold. #
Add at least 2.5 gal (9.5 l) of DEF (/ page137).
The 00E2 DEF indica tor lamp only disappea rswhen theve hicle
is stationar y,at the latest af ter 20 seconds, as soon as you
switch on the ignition or start the engine af terto pping up.
00E2
Refill Additive Starts
until Emerg. Op.: XXX
See Operator's Manual *I
n addition, theye llow DEF indicator lamp lights up and a warning
to ne sounds.
The DEF supply has fallen below there ser vemar k.
Af terth e message appears forth efirs t time, there maining DEF sup‐
ply will last for appro ximately 12 00 miles (1900 km). The engine can
th en only be star ted ano ther 16 times. The number of remaining
engine starts XX(16 to1) is shown in the message everytime the
engine is star ted. #
Add at least 2.5 gal (9.5 l) of DEF (/ page137). The 00E2DEF
indica tor lamp only disappea rswhen theve hicle is stationar y,at
th e latest af ter 20 seconds, as soon as you swit chon the igni‐
tion or start the engine af terto pping up.
00E2
Refill Additive Emer-
gency Op.: XXX mph See
Operator's Manual *
In addition, theye llow DEF indicator lamp 00E2lights up on the
instrument clus ter and a warning tone sounds.
If th eRefill Additive Emergency Op.: XXX mph See Operator's Man-
ual display message is shown, you can only drive theve hicle at a
maximum speed of 5 mph (8 km/h). #
Add at least 2.5 gal (9.5 l) of DEF (/ page137).
The DEF indica tor lamp 00E2only disappea rswhen theve hicle
is stationar y,at the latest af ter 20 seconds, as soon as you
switch on the ignition or start the engine af terre filling.
0099
Additive System Fault
See Operator's Manual *
In addition, theye llow 00B9 Check Engine warning lamp on the
instrument clus ter lights up and a warning tone sounds.
The DEF reducing agent is con taminated, diluted or is not compliant
with ISO 222 41 . #
Have the DEF supply tank cleaned and refilled at a qualified spe‐
cialist workshop as soon as possible.
0099 Additive System Fault
Starts until Emerg. Op.:
XXX See Operator's Man-
ual *
In addition, theye llow 00B9 Check Engine warning lamp on the
instrument clus ter lights up and a warning tone sounds.
The DEF reducing agent is con taminated, diluted or is not compliant
with ISO 222 41 .
The exhaust gas af tertre atment sy stem is defective or an emissions-
re leva nt malfunction has occu rred. This malfunction or defect can
damage theex haust gas af tertre atment sy stem. 368
Display messages and warning and indicator lamps
Display messages
Possible causes/consequences and 0050 0050Solutions
Af terth e message appears forth efirs t time, the engine can only be
st ar ted ano ther 10 times. The number of remaining engine starts XX
(10 to1) is shown in the message everytime the engine is star ted. #
Visit a qualified specialist workshop immediately.
0099 Additive System Fault
Emergency Op.: XXX
mph See Operator's
Manual *
In addition, theye llow 00B9 Check Engine warning lamp on the
instrument clus ter lights up and a warning tone sounds.
Yo u can only drive theve hicle at a maximum speed of 5 mph
(8 km/h). #
Visit a qualified specialist workshop immediately. Ti
res Display messages
Possible causes/consequences and 0050
0050 Solutions
Tire Pressure Monitor
Inoperative No Wheel
Sensors *T
he ins talled wheels do not ha vesuitable tire pressure sensors. The
tire pressure monitor has been switched off. #
Install wheels with suitable tire pressure sensors.
0077
Tire Press. Sen. Missing *T
he tire pressure sensor signal is missing from one or more tires.
No pressure value is displa yedfo rth e tire in question. #
Have thefa ulty tire pressure sensor replaced at a qualified spe‐
cialist workshop.
Tire Press. Monitor Cur-
rently Unavailable *T
here is inter fere nce from a po werful source of radio wav es As a
re sult, no signals from the tire pressure sensors are received. The
tire pressure monitor is temp orarily una vailable. #
Continue driving.
As soon as the cause has been eliminated, the tire pressure
monitor automatically switches on.
0077 Warning Tire Malfunction *T
he pressure in one or more tires suddenly falls. The wheel position
is shown. &
WARNING Risk of an accident from driving wi thaflat tire
Flat tires are dangerous in thefo llowing ways:
R The tires can overheat and cause a fire.
R The driving characteristics, as well as steering and braking,
may be greatly impaired.
Yo u could then lose cont rol of theve hicle. #
Do not drive with a flat tire. #
Obse rveth e no tes on flat tires. In
fo rm ation about flat tires (/ page 294). #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tires. Display messages and
warning and indicator lamps 369
Display messages
Possible causes/consequences and 0050 0050Solutions
00AF
Key Not Detected (red
display message) *T
he SmartK eyis not de tected and may no longer be in theve hicle.
The SmartK eyis no longer in theve hicle and you swit ch the engine
off:
R You can no lon gerst art the engine.
R You cannot lock theve hicle centra lly. #
Ensure that the SmartK eyis in theve hicle.
If th e SmartK eydetection function has a malfunction due to a
stro ngradio signal source, proceed as follo ws: #
Stop theve hicle immediately in accordance with the traf fic con‐
ditions. #
Place the SmartK eyinthe mar ked space forst arting with the
SmartK ey (/page 110).
00AF Key Not Detected (white
display messa ge) *T
he SmartK eyis cur rently not de tected. #
Change the SmartK ey's position in theve hicle. #
Ifth e SmartK eyisstill not de tected, start the engine with the
SmartK eyinthe mar ked space (/ page110).
00AF Replace Key Ba ttery*T
he SmartK ey's battery is discharged. #
Changing the battery (/ page47).
00AF Obtain a New Key *T
he SmartK eymust be replaced. #
Visit a qualified specialist workshop. Ve
hicle Display messages
Possible causes/consequences and 0050 0050Solutions
00B2
Check Washer Fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has fallen below
th e minimum. #
Adding washer fluid (/ page 284).
003E *A
t least one door is open. #
Close all the doors.
f *T
he hood is open. Display messages and
warning and indicator lamps 371
Display messages
Possible causes/consequences and 0050 0050Solutions #
Pull over and stop theve hicle safely as soon as possible,
paying attention toroad and traf fic conditions. Do not con‐
tinue driving under any circums tances. #
Consult a qualified specialist workshop. #
Stop theve hicle immediately in accordance with the traf fic con‐
ditions. Do not continue driving. #
Consult a qualified specialist workshop.
Shift to 'P' or 'N' to Start
Engine *
Yo u ha veattem pted tostart the engine in transmission position 005B
or 005E. #
Shift the transmission toposition 005Dor005C.
To Engage Transmiss.
Position R First Depress
the Brake *
Yo u ha veattem pted toshift from position 005Bor005C toposition 005E. #
Depress the brake pedal. #
Shift the transmission toposition 005E.
Air Conditioning Malfunc-
tion See Operator's Man-
ual *T
he function of the climate cont rol sy stem is temp orarily restricted.
The quantity of air and flow of fresh air are contro lled automatically. #
Have the climate cont rol sy stem checked at a qualified specialist
wo rkshop.
Auxiliary Battery Mal-
function *T
he auxiliary batteryforth e transmission is no longer being
ch arge d. #
Visit a qualified specialist workshop. #
Until then, alw ays shift the transmission toposition 005Dmanually
before you swit choff the engine. #
Before leaving theve hicle, apply the parking brake.
Reversing Not Possible
Service Required *T
he transmission is malfunctioning. It is no longer possible toselect
re ve rsege ar. #
Visit a qualified specialist workshop.
Transmission Malfunc-
tion Stop *T
he transmission is malfunctioning. The transmission automatically
shifts toposition 005C. #
Stop theve hicle immediately in accordance with the traf fic con‐
ditions. #
Shift the transmission toposition 005D. #
Consult a qualified specialist workshop.
0072
Vehicle Operational
Switch the Ignition Off
Before Exiting *Y
ou are about toexitth eve hicle when it is in a ready-to-d rive state. #
When youex itth eve hicle, switch off the ignition and take the
ke y with you. #
Ifyo u do not exitth eve hicle, switch off the electrical consum‐
ers, e.g. the seat heating. Otherwise, the12 ‑V battery may dis‐
ch arge and it will be possible tostart theve hicle only with the
aid of a second battery (s tarting assis tance).
Service Required Do Not
Shift Gears Visit Dealer *T
he transmission is malfunctioning. The transmission position can
no longer be changed. Display messages and
warning and indicator lamps 373
Display messages
Possible causes/consequences and 0050 0050Solutions
0049
Check Left Low
Beam (exa mp le) *T
he bulb in question is faulty. #
Visit a qualified specialist workshop.
or #
Check whe ther changing the bulb is permitted. Indicator and
warning lamps Overview of indicator and
warning lamps When
the ignition is switched on, many sy stems
per form a self-test. Some indicator and warning
lamps may switch on or flash temp orarily during
th is time. This behavior is no cause for alarm.
These indicator and warning lamps indicate a
malfunction only if they light up or flash af terthe
engine has been star ted or during a journe y.
Indicator and warning lamps:
0058 Low beam (/
page84)
0060 Pa
rking lamps (/ page84)
0057 High beam (/
page 85)
003E003D Tu
rn signal lights (/ page 85)
005E Re
ar fog light (/ page84)
00E9 Seat belt not
fastened
(/ page 383)
0027 and
004D USA: Brakes (red) (/
page377)
004D Canada: Brakes (red) (
/page 377)
004D Brakes (yell
ow) (/ page377)
0025 ABS malfunction (/
page 377)
002E Off-
road gear
00E5 ESP®
(/ page 377)
00BB ESP®
OFF (/ page 377)
00D4 Ac
tive Brake Assi stswitched off
(/ page 149)
0049
and 0024 US
A: Electric pa rking brake applied
(red) (/ page377)
0024 Canada: Electric parking brake
applied (red) (/
page377)
0024 Electric parking brake (yell
ow)
( / page 377)
00CC Po
we r-assis tedsteering malfunction
(/ page 383)
003D Elect
rical malfunction
(/ page 384)
0075 Re
stra int sy stem (/ page377) 00B9
Che
ckEngine (/ page 384)
00D4 Fu
elreser vewith fuel filler cap loca‐
tion indicator (/ page 384)
00AC Coolant
too hot/cold (/ page 384)
00BA Dis
tance warning (/ page 383)
0028 Preglow
0077 Ti
re pressure monitor 376
Displaymessa ges and warning and indicator lamps
Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions #
Have the brake sy stem checked immediately at a qualified
specialist workshop. #
Drive on carefully at an adjus ted speed and at a suf ficient dis‐
ta nce from theve hicle in front. #
Ifth e multifunction display sho wsa display message, comply with
it. #
Visit a qualified specialist workshop.
004D
and
0027
Brake warning lamp (red)
(USA)
004D
Brake warning lamp (red)
(Canada) The brake sy
stem redwa rning lamp lights up while the engine is on.
* Po ssible causes:
R The brake forc e boosting is malfunctioning.
R The EBD (electronic brake forc e distribution) is malfunctioning.
R There is not enough brake fluid in the brake fluid reser voir. &
WARNING Risk of accident and injury if brake forc e boosting
is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal
fo rc e may be necessary for braking. The braking characteristics
may be impaired. The braking dis tance can increase in emergency
braking situations. #
Stop in a safe location immediately. Do not continue driving. #
Consult a qualified specialist workshop. &
WARNING Risk of an accident if the EBD (electronic brake
fo rc e distribution) malfunctions
If th e EBD malfunctions, the wheels may lock during braking.
The braking characteristics may be impaired.
The braking dis tance can increase in eme rgency situations. #
Stop in a safe location immediately. Do not continue driving. #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the brak‐
ing characteristics may be impaired. #
Pull over and stop theve hicle safely as soon as possible,
paying attention toroad and traf fic conditions. Do not con‐
tinue driving under any circums tances. #
Consult a qualified specialist workshop. #
Do not add brake fluid. #
Stop theve hicle immediately in accordance with the traf fic condi‐
tions. Do not continue driving. #
Consult a qualified specialist workshop. 380
Display messages and warning and indicator lamps