
Display messages
Possible causes/consequences and 0050
0050Solutions 0007
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. 0007
Consult a qualified specialist workshop.
003A Clean the fuel filter *
Ve hicles with diesel engines: the fuel filter is dirty or thewate r inthe fuel filter needs tobe drained. 0007
Consult a qualified specialist workshop.
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
000E NO
TEEngine dama gedue toinsuf ficient coolant 0007
Avoid long journe yswith insuf ficient coolant. 0007
Add coolant (0013 page415).
003D
Stop vehicle Leave engine
running *T
he battery charge leve l is too lo w. 0007
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. 0007
Lea vethe engine running. 0007
Wait until the display message disappears before pulling away. 516
Displaymessa ges and warning/indicator lamps 

Display messages
Possible causes/consequences and 0050
0050Solutions
Cannot start engine See
Owner's Manual *T
hecharge leve l of the 48 V battery is too lo w.You can no lon gerst art the engine. 0007
Switch off electrical consumers that are not required. 0007
Connect a suitable charge r appro vedby Mercedes-Benz with suf ficient charge output tothe jump-s tart connec‐
tion point of the12 V battery (0013 page 439).
The 48 V battery is charge d via thevo ltage con verter in theve hicle.
Motor can be started again *T
he 48 V battery has been charge d automatically via thevo ltage con verter. 0007
Start the engine and drive theve hicle for a while tocharge the12 V battery and the 48 V batter y.
00AC *T
hefan mo tor is defective. 0007
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C.
00AC
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. 0007
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. 000A
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. 0007
Before opening the bonn et, allow the engine tocool down. 0007
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. 518
Displaymessa ges and warning/indicator lamps 

Display messages
Possible causes/consequences and 0050
0050Solutions 0007
Wait until the engine has cooled down. 0007
Make sure that the air supply tothera diator is not obstructed. 0007
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C.
00D7
Please wait Charging high-
voltage battery *T
he 48 V battery is dischar ged. You ha veswitched on the ignition while the12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assis tance.
The discha rged 48 V battery is charge d automatically via thevo ltage con verter. Af ter a few minutes, theMotor can
be started again display message will be shown on the multifunction displa y. 0007
Start the engine. 0007
Drive theve hicle for a while tocharge the12 V battery and the 48 V battery af ter disconnecting thech arger
from theve hicle.
If th eMotor can be started again display message does not appear af ter a few minutes: 0007
Tryto start the engine again. 0007
Ifth e engine does not start, consult a qualified specialist workshop.
003D
48 V battery See Owner's
Manual *T
he 48 V sy stem is malfunctioning. Con venience functions may be restricted. 0007
Consult a qualified specialist workshop immediatel y. Displ
aymessa ges and warning/indicator lamps 519 

Wa
rning and indicator lamps:
0058 Low beam (0013
page134)
0060 St
anding lights (0013 page134)
0057 High beam (0013
page136)
003E003D Tu
rn signal indicator
(0013 page136)
005E Re
ar fog light (0013 page134)
0075 Re
stra int sy stem (0013 page547)
00E9 Seat belt not
fastened
(0013 page 553)
004D Brakes (yellow) (0013
page547)
004D Brakes (red) (0013
page 547)
0024 Electric pa
rking brake (yellow)
(0013 page547) 0024
Electric parking brake (red)
(0013
page547)
0025 ABS malfunction (0013
page 547)
00E5 ESP®
(0013 page 547)
00BB ESP®
OFF (0013 page547)
L Distance warning (0013 page 553)
00CC Po
we r-assis tedsteering malfunction
(0013 page 558)
00CC AIRMATIC malfunction
(0013
page 553)
00CC DY
NA MIC BODY CONTROL malfunc‐
tion (0013 page 553)
00B9 Engine diagnostics (0013
page 554)0028
Preglow
003D Electrical
fault( 0013 page 554)
00B6 Fu
elreser vewith fuel filler flap loca‐
tion indicator (0013 page 554)
00AC Coolant
too hot/cold
(0013 page 554)
0077 Ty
re pressure monitor
(0013 page 557)
00CA Tr
ailer hit chis not operational or is
swivelling(0013 page 558) Saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and 0050 0050Solutions
004D The
red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected. Display messages and
warning/indicator lamps 547 

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 0007
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need not
be checked.
003D Elect rical fault warning
lamp The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. 0007
Obser vethe messages on the multifunction displa y.
00B6
Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. 0007
Refuel.
00AC
Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. Displ
aymessa ges and warning/indicator lamps 555 

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions 000A
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. 0007
Before opening the bonn et, allow the engine tocool down. 0007
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. 0007
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. 0007
Obser vethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: 0007
Consult a qualified specialist workshop.
or 0007
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. 0007
Check the coolant le vel (0013 page415). 0007
Makesure that the air supply tothera diator is not obstructed. 0007
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. 556
Displaymessa ges and warning/indicator lamps 

Cof
fee cup symbol
see ATTENTION ASSIST
Collapsible spare wheel ..........................471
Inflating ............................................... 471
No tes ................................................... 471
COMAND Online see Multimedia sy stem
COMAND Touch
Managing devices ................................ 313
Combination switch ................................13 6
Combined luggage co ver and net
At tach ing tothere ar seat backrest ...... 11 8
Ins talling/ removing ............................. 11 8
Compass .................................................. 347
Compu ter
see On-board computer
Connection status
Displ aying ............................................ 376
Overview ..............................................3 76
Connectivity Swit ching transmission of theve hicle
position on/off .................................... 310Contacts
.................................................. .356
Calling up ............................................ 357
Deleting ............................................... 358
Downloading (from mobile phone) ....... 357
Importing ............................................ 358
Importing (o verview) ............................ 357
Information .......................................... 356
Making a call ...................................... .358
Na me form at ...................................... .357
Options ................................................ 358
St oring ................................................ 358
Controller Operating ............................................ 301
Con venience closing ................................. 88
Con venience opening ................................ 87
Coolant (engine) Check le vel .......................................... 41 5
No tes .................................................. 485
Cooling see Climate control
Co pyright ...................................................29
Cornering light ........................................ .138
Cross Traf fic Alert .................................. .253 Crosswind Assist
Function/no tes ................................... 209
Cruise control .......................................... 216
Ac tivating ............................................ .218
Buttons ................................................ 218
Calling up a speed .............................. .218
Deactivating ......................................... 218
Fu nction ............................................... 216
Re quirements ...................................... 218
Selecting .............................................. 218
Setting a speed .................................... 218
St oring a speed .................................... 218
Sy stem limitations ...............................2 16
Cup holder Rear .................................................... .126
Cup holder in the centre console
In stalling/removing ............................ .125
ins talling/ removing (auto matic
transmission) ....................................... 12 5 D
Damage de tection (pa rked vehicle) .......202
Dashboard see Cockpit 568
Index 

Ad
aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .545
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .545
0099 AdBlue sy stem fault Engine
st art not possible ................................ 524
0099 AdBlue sy stem fault Perf.
re duced in XXX km See Owner's
Manual ................................................ 524
0099 AdBlue sy stem fault Perf.
re duced: XXX mph No start in XXX
miles .................................................... 524
0099 AdBlue sy stem fault See Own‐
er's Manual ........................................ .523
00B2Ad d 1 litre engine oil when next
re fuelling ............................................. 522
Apply brake todeselect Park (P)
position ...............................................5 26
Apply brake toselect R ....................... 528 00ADAT
TENTION ASSIST inoperative ...512
00AD ATTENTION ASSIS T:Take a
break! .................................................. 508
0049Au tomatic driving lights inoper‐
ative .................................................... 543
Au xilia rybattery malfunction .............. 526
0044Before starting the engine, turn
th esteering wheel. .............................. 528
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 506
Blind Spot Assist inope rative ............... 507
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...5 10
Brake immediately ............................... 492
Cannot start engine See Owner's
Manual ................................................ .518
00AF Changekey bat teries .................. 535
004DCheck brake fluid le vel................ 497
Check brake pads See Owner's Man‐
ual ...................................................... .505 00B2Che
ckeng. oil le v.when next
re fuelling ............................................. 522
00CAChe cktrailer hitch lo ck(white
display message) .................................5 37
Check tyre pressures then restart
Ru n Flat Indicator ................................ 533
0077Check tyre(s) ............................... 531
003AClean the fuel filter ...................... 516
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .527
00AC Coolant Stop vehicle Switch
engine off ............................................. 51 8
Cruise cont rol and Limiter inope ra‐
tive ....................................................... 513
Cruise cont rol inope rative .................... 513
Cruise cont rol off ................................ .513
0025 currently una vailable See Own‐
er's Manual ........................................ .498
00E5cur rently una vailable See Own‐
er's Manual ........................................ .492 Index
571