
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics 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 due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. #
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. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop. 61 4
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! Re d indicator lamp, elect ric
parking brake applied
!
Ye llow elect ric pa rking
brake indicator lamp is mal‐
functioning The
red elect ric pa rking brake indicator lamp flashes or is lit. The yellow indicator lamp is also lit if the electric parking
brake malfunctions.
* #
Obser vethe messages on the multifunction displa y.
6
Re stra int sy stem warning
lamp The
redre stra int sy stem warning lamp is lit while the engine is running.
*The restra int sy stem is faulty (/ page 34). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may
not deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. Display messages and
warning/indicator lamps 61 5

Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function The
red dis tancewarning lamp lights up while theve hicle is in motion.
*T he dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 216).
ä Suspension warning lamp The
yellow AIR BODY CONTROL warning lamp is on.
The yellow DYNA MIC BODY CONTROL warning lamp is on.
*T here is a fault in the AIR BODY CONTROL.
There is a fault in theDY NA MIC BODY CONTROL. #
Notethe messages on the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 617

1,
2, 3 ...
4MATIC ..................................................... 19 3
Fu nction .............................................. 19 3
12 V battery
see Battery (vehicle)
12 V so cket
see Soc ket (12 V)
48 V on-board electrical sy stem
Operating saf ety .................................... 21
230 V soc ket
see Soc ket (230 V)
360° Camera ........................................... 256
Fu nction .............................................. 256
Opening the camera co ver (r eve rsing
camera) .............................................. .260
Selecting a view .................................. 259
Setting favo urites ................................ 260
Swit ching automatic operation
on/off (r eversing camera) .................. .259 A
A/C function Activating/deactivating (multimedia
sy stem) ................................................ 161
Switching on/off (control panel) .......... 161
ABS (Anti-lock Braking Sy stem) ............ .210
Ac celeration
see Kickdown
Ac cess data
Setting (Blue tooth®
) ............................ 443
Ac cident and breakdown manage‐
ment
Mercedes me connect ........................ .437
Ac oustic locking verification signal
Ac tivating/deactivating ......................... 75
Ac tivating/deactivating automatic
vo lume adjustment
Ad vanced sound sy stem ......................4 73
Burmes ter®
sur round sound sy stem ....4 71
Ac tive Blind Spot Assi st.......................... 270
Ac tivating/deactivating ...................... .273
Brake application ................................. 272
Fu nction .............................................. 270Sy
stem limitations ...............................2 70
Tr ailer operation .................................. 272
Ac tive bonn et(pedestrian pr otection) ...4 75
Operation ............................................ 475
Re setting ............................................. 475
Ac tive Brake Assi st
Fu nction/no tes .................................... 216
Setting ................................................. 221
Ac tive Di stance Assist DISTRO NIC........ 228
Ac tive Emergency Stop Assist .............2 38
Ac tive Lane Change Assi st.................. 236
Calling up a speed ............................... 230
Displa ysinthe instrument display .......2 38
Fu nction .............................................. 228
Increasing/decreasing speed .............. 230
Re quirements: .................................... .230
Ro ute-based speed adap tation ........... .233
Selecting ............................................. 230
St eering wheel buttons ....................... 230
St oring a speed ................................... 230
Switching off/deactivating .................. 230
Switching on/activating ......................2 30
Sy stem limitations ...............................2 28
Ac tive Eme rgency Stop Assist ...............238 624
Index

Ac
tive headlamps .................................... 14 4
Ac tive Lane Change Assi st..................... 236
Ac tivating/deactivating ...................... .238
Fu nction .............................................. 236
Ac tive Lane Keeping Assist .................... 273
Ac tivating/deactivating ...................... .275
Ac tivating/deactivating thewa rning .... 275
Fu nction .............................................. 273
Setting the sensitivity .......................... 275
Sy stem limits ....................................... 273
Tr ailer operation .................................. 273
Ac tive Parking Assist .............................. 260
Cross Traf fic Alert ............................... 265
Drive AwayAssi st................................ 264
Exiting a pa rking space ...................... .263
Fu nction .............................................. 260
Manoeuvring assi stance ...................... 266
Pa rking ................................................ 261
Sy stem limitations ...............................2 60
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 232
Display ................................................ 232
Fu nction .............................................. 232 Ac
tive Steering Assist ............................ .234
Ac tivating/deactivating ...................... .236
Ac tive Emergency Stop Assist .............2 38
Ac tive Lane Change Assi st.................. 236
Displa ysinthe instrument display .......2 38
Fu nction .............................................. 234
Sy stem limitations ...............................2 34
Ad aptive brake lights .............................. 222
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction .............................................. 14 6
Switching on/off ................................. 147
Ad aptive Highbeam Assist Plus
Fu nction ............................................... 147
Switching on/off ................................. 14 9
Ad Blue ®
.................................................... 544
Ad ditives .............................................5 44
Capacity .............................................. 545
Fill le vel .............................................. .288
No tes ................................................... 197
Purity ................................................... 544Ra
nge ................................................. .288
To pping up ...........................................1 97
Ad ditional door lo ck.................................. 78
Ad ditional value range
Setting display content ........................ 287
Ad diti ves.................................................. 545
Ad Blue ®
............................................... 544
Engine oil ............................................. 545
Fu el ..................................................... 543
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
Adva nced sound sy stem ......................4 73
Burmes ter®
sur round sound sy stem ....4 72
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ....4 72 Index
625

Au
tomatic front passen ger front air‐
bag deacti vation sy stem
see Automatic front passenger front
airbag shutoff
Au tomatic front passen ger front air‐
bag shu toff .......................................... 43, 45
Fu nction of the automatic front
passenger front airbag deactivation
sy stem ................................................... 43
PA SSENGER AIR BAG indicator lamp .... .45
Au tomatic mir rorfo lding function
Ac tivating/deactivating ...................... .157
Au tomatic seat adjustment
Setting ................................................. 109
Au tomatic transmission
DIRECT SELECT le ver ........................... 188
Drive program display .......................... 187
Drive programs .................................... 186
DY NA MIC SELECT switch .................... 186
Engaging drive position ....................... 19 0
Engaging neutral .................................. 19 0
Engaging pa rkposition ........................ 19 0
Engaging reve rsege ar ........................ .190
Kickdown ............................................. 19 2Manual
gear changing .......................... 191
St eering wheel gearshift paddles ........ .191
Tr ansmission position display .............. 188
Tr ansmission positions ........................ 188
Axle load Perm issible .......................................... 539
Tr ailer operation .................................. 553 B
Bag hook .................................................. 12 6
Ball ne ck
Extending/r etra cting ........................... 276
BA S (Brake Assist Sy stem) .................... .210
Battery Charging (Remo teOnline) .................... 175
Ke y ........................................................ 76
Re mo tecontrol (s tationary heater) ...... 16 8
Battery see Battery (vehicle)
Battery (vehicle) ...................................... 507
Charging .............................................. 506
Charging (Remo teOnline) .................... 175
No tes .................................................. 502 No
tes (s tarting assis tance and
ch arging) ............................................ .504
Re placing .............................................5 07
St arting assis tance .............................. 506
Belt see Seat belt
Bic ycle rack
Tr ailer operation .................................. 279
Blind Spot Assi st..................................... 270
Ac tivating/deactivating ...................... .273
Fu nction .............................................. 270
Sy stem limitations ...............................2 70
Blo wer
see Climate control
BlueTEC see AdBlue ®
Blue tooth ®
............................................... 355
Information .......................................... 355
Setting up an Internet connection ....... 443
Switching on/off ................................. 355
Bonnet Resetting (active bonnet) ..................... 475628
Index

Boot lid
see Tailgate
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid
No tes ................................................... 547
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 216
Brakes ABS (Anti-lock Braking Sy stem) ........... 210
Ac tive Brake Assi st.............................. 216
Ad aptive brake lights .......................... .222
BA S (Brake Assi stSystem) ...................2 10
Driving tips ........................................... 176
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 216
HOLD function .................................... .240
Limi ted braking ef fect (salt-trea ted
ro ads) .................................................. 176
New/replaced brakepads/brake
discs .................................................... 176
Ru nning-in no tes ..................................1 76Braking assistance
see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 16
To w- starting ........................................ .512
To wing away ........................................ 508
Tr ansporting theve hicle ....................... 51 0
Wheel change ...................................... 530
Breakdown see Flat tyre
Bu rm ester ®
sur round sound sy stem .....4 71
Ad justing the balance/fader ................4 72
Ad justing the sound focus ................... 472
Ad justing treble, mid-range and bass
settings ................................................ 471
Au tomatic volume adjustment ............ .471
Calling up the sound menu .................. 471
Information ..........................................4 71
Selecting the sound profile .................. 472
Buttons Steering wheel .................................... 284 C
Call list Deleting ............................................... 422
Making a call ....................................... 421
Overview ..............................................4 21
Selecting options ................................. 421
Selecting options for suggestions ........ 422
Calling up the sound menu
Adva nced sound sy stem ......................4 72
Burmes ter®
sur round sound sy stem ....4 71
Calls .......................................................... 416
Ac cepting ............................................. 416
Ac tivating functions du ring a call ......... 417
Calls with se veral participants ............ .417
Declining .............................................. 416
Ending a call ........................................ 416
Incoming call during an existing call .... 417
Making .................................................4 16
Mercedes me ...................................... 434
Camera see 360° Camera
see Reversing camera
Car key
see Key Index
629

Display messages
¯ - - - km/h .................................... 577
ç - - - km/h .................................... 576
È - - - km/h .................................... 578
# 12V battery See Owner's Man‐
ual ....................................................... 580
#48 V battery See Owner's Man‐
ual ....................................................... 582
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........574
Ac tive Blind Spot Assi stinope rative .....574
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ .574
Ac tive bonnet malfunction See Own‐
er's Manual ......................................... 602
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 566
Ac tive Brake Assi stFunctions limited
See Owner's Manual ............................ 567 Ac
tive Dis tance Assi stavailable
again .................................................... 577
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........576
Ac tive Dis tance Assi stinope rative ....... 576
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........572
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 573
b Active Light Sy stem inoperative .. 607
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual ......................................... 569
Ac tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops ......................................... 572
Ac tive Steering Assist cur rently
una vailable See Owner's Manual .........571
Ac tive Steering Assist inoperative ........571 Ad
aptive Highbeam Assist Camera
view restricted See Owner's Manual ... 607
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........607
Ad aptive Highbeam Assist inopera‐
tive ...................................................... 607
Ad aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual ................................................ 608
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .608
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .608
¯ AdBlue sy stem fault Emer. op.:
max. XXX mphSt art not poss. in XXX
miles .................................................. .589
¯ AdBlue sy stem fault Emer‐
ge ncy op. in XXX km See Owner's
Manual ................................................ 588 634
Index