
R
The lane markings are worn, dark or co vered.
R The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
R The lane markings change quickl y,e.g. lanes
branch off, cross one ano ther or mer ge.
R The road is very nar row and winding.
Ve hicles with Driving Assistance pac kage or
Driving Assistance Plus pa ckage: Active Lane
Ke eping Assist uses radar sensors tomonitor
se veral areas around theve hicle. If thera dar
sensors in there ar bumper are dirty or co vered
with sn ow,th e sy stem may be impaired or may
not function. If an obs tacle in the lane in which
yo u are driving has been de tected, no lane-cor‐
re cting brake application occu rs.
Ac tivating Active Lane Keeping Assist &
WARNING Risk of accident despi te
Ac tive Lane Keeping Assist warning
A lane-cor recting brake application cannot
al wa ys bring theve hicle back into the origi‐
nal lane. #
Alw aysst eer, brake or accelera teyour‐
self, especially if Active Lane Keeping
Assist warnsyo u or makes a lane-cor‐
re cting brake application. &
WARNING Risk of accident despi teinter‐
ve ntion of Active Lane Keeping Assist
Ac tive Lane Keeping Assist does not de tect
traf fic conditions or road users. In very rare
cases, the sy stem may make an inappropri‐
ate brake application, e.g. af ter intentional ly
driving over a solid lane marking.
The brake application can be inter rupte d at
any time if yousteer slightly in the opposite
direction. #
Alw ays make sure that there is suf fi‐
cient di stance tothe side forot her traf‐
fi c or obs tacles. &
WARNING Risk of accident despi teLane
Ke eping Assist
Lane Keeping Assist cann otalw ays clearly
de tect lane markings. In su
chcases, Lane Keeping Assist can:
R give an unnecessary warning
R not give a warning #
Alw ays pay particular attention tothe
traf fic situation and keep within the
lane, especially if Active Lane Keeping
Assist alerts you. Re
quirement:
The driving speed is at least 60 km/h. 246
Driving and pa rking

Obser
vethefo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right).
It is only permissible tofit a di fferent wheel
size in theeve nt of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels.
R Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit. R
Vehicles with a tyre pressure monitoring
sy stem: Allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7 °C, use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated in an appropriate label
in the driver's field of vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear. R
When replacing with tyres that do not
fe ature run-flat characteristics: Vehicles
with MOExtended tyres are not equipped
with a TIREFIT kit at thefa ctor y.Equip the
ve hicle with a TIREFIT kit af terre placing with
tyres that do not feature run-flat characteris‐
tics, e.g. winter tyres.
Fo r more information on wheels and tyres, con‐
ta ct a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page410)
R Tyre pressure table (→ page411)
R Notes on the emer gency spa rewheel
(→ page 427) Note
s on inter changing wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions 420
Wheels and tyres

ÂKe
y not de tected (red displ ay
messa ge).............................................4 87
 Key not de tected (white displ ay
messa ge).............................................4 86
Let fresh air into theve hicle interior!
Air conditioning malf. Visit workshop .. 494
Limiter inoperative .............................. 470
Limiter passive .................................... 469
bMalfunction See Owner's Man‐
ual ....................................................... 500
ÉMalfunction See Owner's Man‐
ual ....................................................... 463
max. speed 22 mph............................. 465
ðMaximum speed exceeded ..........4 70
N permanently active Risk of vehicle
ro lling .................................................. 490
ëOff .............................................. .468
Only select Park (P) when vehicle is
st ationary ............................................ 490 !Pa
rking brake See Owner's
Manual ................................................ 452
Pa rking Pilot and PARKTRONIC inop‐
erative See Owner's Manual ................471
Pa rking Pilot Manoeuvring assis‐
ta nce limited See Owner's Manual ......471
 Place theke y in the mar ked
space See Owner's Manual ................. 487
Please reduce speed ...........................4 65
ÉPlease reduce speed ...................4 64
PRE-SAFE impulse side inoperative
See Owner's Manual ........................... 457
PRE-SAFE inoperative See Owner's
Manual ................................................ 456
Ra dar sensors dirty See Owner's
Manual ................................................ 457
hRe ctify tyre pressure ................... 482
ØRe fill Ad Blue Eng. start not pos‐
sible .................................................... .478 Ø
Refill Ad Blue No start in XXX mi
............................................................ .480
ØRe fill Ad Blue See Owne r’s Man‐
ual .......................................................4 78
! Release parking brake .................451
¸ Replace air cleaner ......................479
, Replace key See Owner's Man‐
ual ...................................................... .486
ÂRe placekey ................................ .485
8Re servefuel le vel........................ 479
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 458
Re versing not poss. Consult work‐
shop ....................................................4 91
Risk of vehicle rolling Driver door
open and transmission not in P ...........490
#See Owner's Manual ....................474
Speed limit (winter tyres) XXX mph..... 470
# Start engine See Owner's Man‐
ual ...................................................... .480 528
Index

ÐSt
eering malfunction Drive
carefully Visit workshop ......................4 94
Ð Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 495
ÐSt eering malfunction See Own‐
er's Manual ......................................... 493
ÐSt eering malfunction Stop
immediately See Owner's Manual .......495
St eering Pilot cur rently una vailable
See Owner's Manual ...........................469
St eering Pilot inoperative .................... 469
St op vehicle Lea veengine running
Wa itTransmission cooling ...................491
# Stop vehicle Lea veengine run‐
ning ..................................................... 475
# Stop vehicle See Owner's Man‐
ual ........................................................ 474
É Stop vehicle Vehicle too low ........ 464
bSwitch off lights .......................... 500
bSwitch on headlamps .................. 500To
shift out of P or N,depress brake
and start engine .................................. 490
To p up coolant See Owner ’sManual ....472
¥ Top up washer fluid .................... .498
Tr af fic Sign Assi stCamera view
re stricted See Owner's Manual ........... 466
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ......................470
Tr af fic Sign Assi stinope rative .............. 471
j Trailer coupling extending… ......... 488
Tr ansmission Malfunction Stop ............ 491
!Tu rnon the ignition torelease
th e parking brake ................................ 450
Ty re press. monitor cur rently una vail‐
able .................................................... .483
Ty re press. monitor inoperative ...........484
Ty re press. monitor inoperative No
wheel sensors .................................... .484
Ty re pressure Check tyres ...................481
Ty re(s) ove rheated ...............................4 84Ty
re(s) ove rheated Reduce speed ........ 485
dVe hicle is operational Switch
off the ignition before exiting .............. .491
É Vehicle rising Please wait............ 462
ÉVe hiclerising ...............................4 62
hWa rning tyre defect .....................483
hWheel sensor(s) missing ............. 484
Wi thout changing gear, consult work‐
shop ....................................................4 90
Dist ance control
see Dis tance Pilot DISTRONIC
Di stance Pil otDISTRONIC ...................... 202
Ac tivating ............................................ 205
Ac tivation conditions ........................... 205
Calling up a speed ............................... 205
Deactivating ........................................ 205
Fu nction .............................................. 202
Le ver ................................................... 205
Selecting ............................................. 205
Setting a speed ................................... 205
St oring a speed ................................... 205
Sy stem limits ....................................... 202 Index
529

Distance
recorder .................................. .259
DISTRO NIC
see Dis tance Pilot DISTRONIC
Door Additional door lock .............................. 68
Locking (emer gency key) ...................... .72
Opening (from inside) ............................68
Un locking (emer gency key) .................... 72
Un locking (from inside) ........................ .68
Door see Locking/unlocking
Door cont rol panel .................................... .16
Drive Away Assist .................................... 236
DRIVE PIL OT............................................. 209
Fu nction .............................................. 209
Drive position Selecting .............................................. 173
Drive prog ram display ............................. 16 9
Drive prog rams ........................................ 16 8
Driver's seat see Seat Driving abroad
Symmetrical dipped beam .................. .131
Driving light see Automatic driving lights
Driving saf ety sy stem ............................ .188
ABS (Anti-lock Braking Sy stem) ........... 189
Ac tive Brake Assi st.............................. 194
Ad aptive brake lights .......................... .199
BA S (Brake Assi stSystem) .................. 189
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 19 3
ESP ®
(Electronic Stability Prog ram)
Crosswind Assist ................................. 19 3
ESP ®
(Electronic Stability Prog ram)
trailer stabilisation .............................. .193
Overview ............................................. 188
Ra dar sensors .....................................1 88
Re sponsibility ...................................... 188
Driving saf ety sy stem
see ESP ®
(Elect ronic Stability Prog ram)
Driving sy stem
DY NA MIC BODY CONTROL .................. 214
Driving sy stem
see 360° Camera see
Active Blind Spot Assi st
see Active Lane Keeping Assist
see AIR BODY CONTROL
see ATTENTION ASSIST
see Blind Spot Assist
see Cruise control
see Dis tance Pilot DISTRONIC
see DRIVE PIL OT
see Driving saf ety sy stem
see HOLD function
see Limiter
see Parking Assist PARKTRONIC
see Parking Pilot
see Remo teParking Pilot
see Reversing camera
see Speed Limit Pilot
see Steering Pilot
see Traf fic Sign Assi st
Driving tips Driving abroad (symmetrical dipped
beam) .................................................. 131
Gene ral driving tips ............................ .164
Ru nning-in no tes ..................................1 64
Dr ow siness de tection
see ATTENTION ASSIST 530
Index