
Display messages
Possible causes/consequences and M
MSolutions
Active Brake Assist Func-
tions limited See Owner's
Manual *
Ve hicles with Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS is malfunctioning.
Ve hicles without the Driving Assistance Package: Active Brake Assi stis malfunctioning. #
Consult a qualified specialist workshop.
PRE-SAFE inoperative See
Owner's Manual *
PRE‑SAFE ®
functions are malfunctioning. #
Consult a qualified specialist workshop.
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R soiling of the sensors
R heavy rain
R extended driving on inter-urban roads without moving traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable.
Once the cause of the problem is no longer present, driving sy stems and driving saf ety sy stems are available again.
If th e display message does not disappear: #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Clean all senso rs . #
Restart the engine. Display messages and
warning/indicator lamps 435 

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 357).
No tes on engine oil (→ page416).
4
Engine oil level Stop vehi-
cle Switch engine off *D
isplay message only with 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. #
Check the engine oil le vel.
To p up the engine oil (→ page 357).
No tes on engine oil (→ page416). 454
Displaymessa ges and warning/indicator lamps 

Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil level Reduce oil
level *D
isplay message only with 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 veengine oil siphoned off.
4
Add 1 litre engine oil when
next refuelling *D
isplay message only with 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. #
Check the engine oil le vel when next refuelling.
To p up the engine oil (→ page 357).
No tes on engine oil (→ page416). Displ
aymessa ges and warning/indicator lamps 455 

Display messages
Possible causes/consequences and M
MSolutions
4 Engine oil pressure Stop
Switch off engine *D
isplay message only with cer tain engines:
The engine oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil pressure #
Avoid long journe yswith 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.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor is inter rupte d or the oil le vel sensor is faulty.
The engine oil le vel has dropped tothe minimum le vel. #
Consult a qualified specialist workshop.
Ø Refill AdBlue See Owner’s
Manual *
The AdBlue ®
leve l has fallen below there ser verange. #
Refill Ad Blue ®
immediately . 456
Display messages and warning/indicator lamps 

1,
2, 3 ...
12 V so cket
see Soc ket (12 V)
230 V so cket
see Soc ket (230 V)
360° Camera ........................................... 204
Assigning as a favo urite ...................... .207
Care .................................................... 363
Fu nction .............................................. 204
Selecting a view .................................. 206 A
A/C function Activating/deactivating (control
panel) .................................................. 13 0
Ac tivating/deactivating (multimedia
sy stem) ................................................ 13 0
ABS (Anti-lock Braking Sy stem) ............ .170
Ac celeration
see Kickdown
Ac cess data
Editing ................................................ .322
Setting ................................................. 320 Ac
oustic locking verification signal
Swit ching on/off .................................. .59
Ac tive Blind Spot Assi st......................... 222
Ac tivating/deactivating ...................... .224
Brake application ................................. 222
Fu nction/no tes ................................... 222
Sy stem limits ....................................... 222
Tr ailer operation .................................. 222
Ac tive bonn et(pedestrian pr otection) .. 353
Operation ............................................ 353
Re setting ............................................. 353
Ac tive Brake Assi st.................................. 175
Fu nction/no tes .................................... 175
Setting ................................................. 17 9
Ac tive Eme rgency Stop Assist ...............192
Ac tive Lane Change Assi st...................... 191
Ac tive Lane Keeping Assist .................... 224
Ac tivating/deactivating ...................... .226
Fu nction .............................................. 224
Sensitivity (function/no tes) ................. 227
Setting the sensitivity .......................... 227
Sy stem limits ....................................... 224
Tr ailer operation .................................. 224 Ac
tive light function ................................ 11 7
Ad aptive brake lights ..............................180
Ad aptive cruise control
see Dis tance Pilot DISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist Plus
Ac tivating/deactivating ...................... .120
Fu nction ............................................... 11 9
Ad Blue ®
.................................................... 41 5
Ad ditives .............................................. 41 5
Filling capacity ..................................... 416
No tes ................................................... 157
Purity ................................................... 41 5
Ad ditional door lo ck.................................. 62
Ad diti ves................................................... 416
Ad Blue ®
............................................... 41 5
Engine oil ............................................. 416
Fu el ...................................................... 414
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel Index
497 

DIRECT SELECT le
ver............................... 15 0
Fu nction .............................................. 15 0
DIRECT SELECT selector le ver
Engaging drive position ....................... 15 2
Engaging pa rkposition automatically .. 15 2
Engaging reve rsege ar ........................ .152
Selecting park position ........................ 15 2
Shifting toneutral ................................ 15 2
Display Care .................................................... 365
Display (multimedia sy stem)
Settings .............................................. .266
Display (on-board comp uter).................. 237
Display message .................................... .423
Calling up (on-boa rdcompu ter) ........... 423
No tes .................................................. 423
Display messages ? ................................................... 450
C ................................................... 476
M ................................................... 476
N ................................................... 477
¯ .................................................... 449Ac
tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........445
Ac tive Blind Spot Assi stinope rative ....445
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 445
Ac tive bonnet malfunction See Own‐
er's Manual .......................................... 475
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 434
Ac tive Brake Assi stFunctions limited
See Owner's Manual ........................... 435
Ac tive Lane Keeping Assist Camera
view restricted See Owner's Manual ...444
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........443
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 443
b Active Light Sy stem inoperative ..478 Ad
aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual ................................................ 480
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .479
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .479
4Ad d 1 litre engine oil when next
re fuelling ............................................. 455
Air conditioning Malfunction See
Owner's Manual ................................... 471
App lybrake todeselect Park (P)
position ...............................................4 67
App lybrake toselect R ........................ 471
À ATTENTION ASSIST inoperative ...440
À ATTENTION ASSIS T:Take a
break! .................................................. 440
b AUTO lights inope rative ............... 479
Au xilia rybattery malfunction ...............470 Index
505 

_Before
starting the engine, turn
th esteering wheel. .............................. 472
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ......................444
Blind Spot Assi stinope rative ............... 445
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...4 45
Brake immediate ly............................... 433
ÂChange key bat teries .................. 464
ØCheck AdBlue See Owne r’s
Manual ................................................ 457
JCheck brake fluid le vel................ 433
4Check eng. oil le v.when next
re fuelling ............................................. 454
jChe cktrailer hitch lo ck............... 467
hCheck tyre(s) ............................... 460
!Clean the fuel filter ...................... 457
Clutch overheated Avoid pulling away
fo r XX:XX mins ..................................... 470
É Compressor is cooling ................442?
Coolant Stop vehicle Switch
engine off ............................................ 451
Cruise contro l and Limiter inope ra‐
tive ...................................................... 449
Cruise cont rol inope rative ................... 449
Cruise cont rol off ................................ 449
! currently una vailable See Own‐
er's Manual ........................................ .425
÷cur rently una vailable See Own‐
er's Manual ........................................ .426
Depress clutch ful lyto start engine .....4 70
Dis tance Pilot available again ..............447
Dis tance Pilot cur rently una vailable
See Owner's Manual ...........................448
Dis tance Pilot inope rative ................... 448
È .................................................... 449
Ø Eng.start not possible in XXX
mi ........................................................ 458
ØEng. start not possible ................ 458 5Engine oil le
vel cannot be
measured ............................................ 456
4Engine oil le velRe duce oil le vel...4 55
4Engine oil le velSt op vehicle
Switch engine off ................................ 454
4Engine oil pressure Stop Switch
off engine ............................................ 456
6Example: Front left malfunction
Consult workshop ...............................4 37
b Example: Left dipped beam ........478
6 Example: Left windowbag mal‐
function Consult workshop ................. 437
Example: Parking Pilot Parking can‐
celled ................................................ .446
_Example: Rear left seat back‐
re st not lo cked .................................... 477
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 38
Fr ont-passenger airbag enabled See
Owner's Manual ..................................4 39506
Index 

Emer
gency key
Locking a door ....................................... 67
Un locking a door .................................. .67
Emer gency key element
Inserting/removing ............................... 60
Emer gency operation mode
St arting vehicle ................................... 14 2
Emer gency spare wheel
No tes .................................................. 406
Re moving ............................................ 407
Emer gency spare wheel
see Spare wheel
see Wheel change
Energy consu mption
Ke y ........................................................ 59
Engine ECO start/ stop function ......................1 46
Engine number ..................................... 41 0
St arting (eme rgency operation
mode) .................................................. 14 2
St arting (mobile phone) ...................... .141
St arting (s tart/s top button) .................1 41
St arting assis tance .............................. 377
Switching off (s tart/s top button) ........ 16 0Engine bonnet
Function (active bonnet) ...................... 353
Opening/closing ................................. 354
Re setting (active bonnet) .................... 353
Engine data Displaying ............................................ 14 9
Engine electronics Notes .................................................. 408
Engine number ......................................... 41 0
Engine oil ................................................ .357
Ad ditives .............................................. 416
Checking the oil le vel using the oil
dipstick ............................................... 356
Checking the oil le vel using the on-
board computer ................................... 356
Filling capacity .....................................4 17
MB-F reigabe or MB-Appr oval .............. .417
To pping up ...........................................3 57
Entering characters
Fu nction/no tes ................................... 264
On theto uchpad ................................ .265
Using the controller ............................. 265
ERA-GLONASS test mode
St arting/ending .................................. .319 ESC (Electronic
Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
(Electronic Stability Prog ram) ...... 17 0
Crosswind Assist .................................. 174
Fu nction/no tes ................................... 17 0
Switching on/off .................................. 174
Tr ailer stabilisation .............................. .174
EU type appr oval number ....................... 41 0
Exterior lighting Care .................................................... 363
Exterior lighting see Lights F
Fa tigue warning
see ATTENTION ASSIST
Fa ult message
see Displ aymessa ge
Favo urites
Ad ding .................................................2 62
Calling up ............................................ 262
Deleting ............................................... 263
Moving ................................................ 263 Index
511