
Display messages
Possible causes/consequences and M
MSolutions #
Ifth e engine does not start, consult a qualified specialist workshop.
#
48 V battery See Owner's
Manual *T
he 48 V sy stem is malfunctioning. Con venience functions may be restricted. #
Consult a qualified specialist workshop immediatel y.
8
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel. Engine oil
Display messages
Possible causes/consequences and M MSolutions
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 507

Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil level Reduce oil
level *D
isplay message only for cer tain engines:
The engine oil le vel is too high.
* NO
TEEngine dama gecaused bydriving with excess engine oil #
Avoid long journe yswith excess engine oil. #
Consult a qualified specialist workshop immediately and ha vethe engine oil siphoned off.
4 Engine oil level Stop vehi-
cle Switch engine off *D
isplay message only for cer tain engines:
The engine oil le vel is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
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. #
Switch off the engine. #
Add 1 l engine oil. #
Check the engine oil le vel.
To p up engine oil (→ page 405).
No tes on engine oil (→ page471). 508
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The engine oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil pressure #
Avoid driving with insuf ficient engine oil pressure. #
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. #
Consult a qualified specialist workshop.
4 Add 1 litre engine oil when
next refuelling *D
isplay message only for cer tain engines:
The engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
When next refuelling, add 1 litre of engine oil.
To p up engine oil (→ page 405).
No tes on engine oil (→ page471). Displ
aymessa ges and warning/indicator lamps 509

Display messages
Possible causes/consequences and M
MSolutions
4 Check eng. oil lev. when
next refuelling *T
he engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Check the engine oil le vel when next refuelling.
To p up the engine oil (→ page 405).
No tes on engine oil (→ page471). Exhaus
tga s af tertre atment Display messages
Possible causes/consequences and M MSolutions
Ø Refill AdBlue See Owner’s
Manual *
The AdBlue ®
leve l has fallen below there ser verange. #
Top up AdBlue ®
immediately (→ page 179).
Ø *
The AdBlue ®
tank is em pty. Yo u can no lon gerst art the engine. #
Top up at least 4.5 l of AdBlue ®
(→ page 179). 51 0
Displaymessa ges and warning/indicator lamps

Ac
tive Lane Keeping Assist .................... 250
Ac tivating/deactivating ...................... .252
Fu nction .............................................. 250
Sy stem limitations ...............................2 50
Ac tive Parking Assist .............................. 232
Cross Traf fic Alert ................................ 24 2
Drive AwayAssi st................................ 24 2
Exiting a pa rking space ...................... .235
Fu nction .............................................. 232
Manoeuvring assi stance ...................... 24 3
Pa rking ................................................ 233
Sy stem limitations ...............................2 32
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 208
Display ................................................ 208
Fu nction .............................................. 208
Ac tive Steering Assist ............................ .211
Ac tivating/deactivating ...................... .213
Ac tive Emergency Stop Assist .............. 214
Ac tive Lane Change Assi st................... 213
Displ ays in the instrument display .......2 15
Fu nction ............................................... 211
Sy stem limitations ...............................2 11Ad
aptive brake lights .............................. 201
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist Plus
Fu nction .............................................. 13 3
Switching on/off ................................. 13 4
Ad Blue ®
.................................................... 470
Ad ditives .............................................. 470
Capacity .............................................. 470
Fill le vel .............................................. .265
No tes ................................................... 178
Purity ................................................... 470
Ra nge .................................................. 265
To pping up ...........................................1 79
Ad ditional door lo ck.................................. 75
Ad ditional value range
Setting display content ........................ 263
Ad diti ves.................................................. 471
Ad Blue ®
............................................... 470
Engine oil ............................................. 471
Fu el ..................................................... 468 Ad
diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Burmes ter®
high-end 3D sur round
sound sy stem ...................................... 399
Burmes ter®
sur round sound sy stem ... 398
Ad justing the bass, mid- range and
treble
Burmes ter®
high-end 3D sur round
sound sy stem ...................................... 399
Ad justing the mid- range, treble and
bass
Burmes ter®
high-end 3D sur round
sound sy stem ...................................... 399
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ... 398 546
Index

Ad
aptive Highbeam Assist Plus inop‐
erative ................................................ .530
¯ AdBlue sy stem fault Engine
st art not possible ................................ .512
¯ AdBlue sy stem fault Perf.
re duced in XXX km See Owner's
Manual .................................................5 11
¯ AdBlue sy stem fault Perf.
re duced: XXX mph No start in XXX
miles .................................................... 511
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... 511
4 Add 1 litre engine oil when next
re fuelling ............................................. 509
Air conditioning Malfunction See
Owner's Manual .................................. 526
Apply brake todeselect Park (P)
position ................................................ 513
App lybrake toselect R ........................ 514
À ATTENTION ASSIST inoperative ... 498ÀAT
TENTION ASSIS T:Take a
break! .................................................. 495
bAu tomatic driving lights inoper‐
ative .................................................... 529
Au xilia rybattery malfunction ...............514
Beginning eme rgency stop .................. 490
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 501
Blind Spot Assist inope rative ............... 494
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 97
Cann otstart engine See Owner's
Manual ................................................ 505
ÁChan gekey bat teries .................. 520
JCheck brake fluid le vel................ 483
Check brake pads See Owner's Man‐
ual ...................................................... .493
4Che ckeng. oil le v.when next
re fuelling .............................................. 51 0ï
Check trailer hit chlock (white
display message) ................................ .525
Che cktyre pressu resth en restart
Ru n Flat Indicator ................................. 519
h Check tyre(s) .............................. .516
! Clean the fuel filter .................... .503
?Coolant Stop vehicle Switch
engine off ............................................ 505
Cruise contro l and Limiter inope ra‐
tive ...................................................... 500
Cruise control inope rative ................... 500
Cruise control off ................................ 500
!cu rrently unavailable See Own‐
er's Manual ........................................ .485
÷cur rently una vailable See Own‐
er's Manual .......................................... 479
5 Engine oil le vel cannot be
measured ............................................ 507
4Engine oil le velRe duce oil le vel...5 08 556
Index

4Engine oil le
velSt op vehicle
Switch engine off ................................ 508
4Engine oil pressure Stop Switch
off engine ............................................ 509
6Example: Left windowbag mal‐
function Consult workshop ................. 487
Fa ult Drive at max. 80 km/h ...............497
6 Front left malfunction Consult
wo rkshop (Example) ............................4 91
_ Front left seat backrest not
loc ked (Example) .................................5 22
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 89
Fr ont-passenger airbag enabled See
Owner's Manual ..................................4 88
b Hazard warning lamps mal‐
functioning .......................................... 529
&inoperative Bat tery low .............. .527
& inope rative Refuel vehicle ........... 527
&inoperative See Owner's Man. ....527 !
inope rative See Owner's Man‐
ual ....................................................... 486
÷inoperati veSee Owner's Man‐
ual ....................................................... 486
Tinoperati veSee Owner's Man‐
ual ....................................................... 483
GInoperati ve.................................. 490
bIntelli gent Light Sy stem inoper‐
ative ....................................................5 28
ÁKe y not de tected (red displ ay
messa ge).............................................5 19
Á Key not de tected (white dis‐
pl ay messa ge).....................................5 20
bLeft dipped beam (Example) ....... 528
6Left wind owbag malfunction
Consult workshop (Example) ............... 487
Let fresh air into theve hicle interior!
Air conditioning malf. Visit workshop .. 526
Limiter inoperative .............................. 500
Limiter passive .................................... 501 ¢
Lowe ring .................................... 498
bMalfunction See Owner's Man‐
ual ....................................................... 529
ðMaximum speed exceeded ..........5 01
Mercedes me connect Services limi‐
te d See Owner's Manual .....................490
Mo tor can be star ted again .................5 05
N permanently active Risk of vehicle
ro lling .................................................. .513
ç Off............................................... 499
ëOff ............................................... 496
Only select Park (P) when vehicle is
st ationary ............................................ .514
ï Operation only possible in
transmission position N ....................... 522
ïOperation only possible in
transmission position P ....................... 522
!Pa rking brake See Owner's
Manual ................................................ 480 Index
557

Electronic
Stability Prog ram
see ESP ®
(Electronic Stability Prog ram)
Emer gency
Fire extinguisher ................................. .420
Fir st-aid kit (so ftsided) ........................ 419
Overview of the help functions .............. 16
Re moving thewa rning triangle ............ .419
Saf etyve st ........................................... 41 8
Setting up thewa rning triangle ............ 419
Emer gency braking ................................. 188
Emer gency braking
see BAS (Brake Assi stSystem)
Emer gency call sy stem
see Mercedes-Benz emer gency call sy stem
Emer gency engine start .......................... 437
Emer gency key
Inserting/removing ............................... 73
Locking a door ....................................... 79
Un locking a door .................................. .79
Emer gency operation mode
St arting theve hicle .............................. 161
Emer gency spare wheel .........................4 59
No tes .................................................. 459 Re
moving ............................................ 460
ENERGIZI NGcomfort
Overview of programs .......................... 310
St arting the program ............................3 11
Engine ECO start/ stop function ......................1 65
Engine number ................................... .463
St arting (Digital Vehicle Keyst icke r) .... 16 0
St arting (eme rgency operation
mode) .................................................. 161
St arting (mobile phone) ...................... .160
St arting (Remo teOnline) ..................... 16 2
St arting (s tart/s top button) ................ 15 9
St arting assis tance .............................. 430
Switching off (s tart/s top button) .........1 81
Engine bonnet Function (active bonnet) ...................... 401
Opening/closing ................................. 402
Re setting (active bonnet) ..................... 401
Engine data Displaying ............................................ 17 0
Engine electronics Notes ................................................... 461
Engine number ........................................4 63Engine oil
................................................. 405
Ad ditives .............................................. 471
Capacity .............................................. .471
Checking the oil le vel using the oil
dipstick ............................................... 404
Checking the oil le vel using the on-
board computer ................................... 405
MB-Fr eigabe or MB-Appr oval .............. .471
Quality ................................................. 471
To pping up ...........................................4 05
Entering characters
Fu nction/no tes ................................... 296
On theto uchpad .................................. 297
Using the controller ............................. 297
EQ Boost ECO start/ stop function (operation) ....1 65
Glide mode .......................................... 174
Operating saf ety .................................... 21
Qualified specialist workshop ................25
ERA-GLONASS test mode
St arting/ending .................................. 364
ESC (Elect ronic Stability Control)
see ESP ®
(Electronic Stability Prog ram) Index
561