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Ad
justing the front seat electrically 1
Head restra int height
2 Seat backrest inclination
3 Seat height
4 Seat cushion length
5 Seat cushion inclination
6 Seat fore -and-aft position #
Save the settings with the memory function
(/ page 105). Ad
justing the 4-w aylumbar support 1
Higher
2 Softer
3 Lower
4 Firmer #
Using buttons 1to4 , adjust the conto ur
of the backrest individually tosuit your bac k. Head
restra ints Ad
justing the front seat head restra ints man‐
ually &
WARNING Risk of inju rydue toadjusting
ve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations in particular:
R Ifyo u adjust the driver's seat, the head
re stra ints, thesteering wheel or the mir‐
ro r while theve hicle is in motion.
R Ifyo ufast enyour seat belt while theve hi‐
cle is in motion. #
Before starting the drive sy stem: adjust
th e driver's seat, the head restra ints,
th esteering wheel and the mir ror and
fast enyour seat belt. 98
Seats and stowing
Page 198 of 453

If
th eve hicle is braked sharply from speeds
abo ve50 km/h, the brake lamps flash rapidly.
This pr ovides traf fic tr ave lling behind you with an
eve n more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica‐
tion, the hazard warning lights switch on once
th eve hicle is stationar y.When you pull away
again, the hazard warning lights will switch off
automatically at appr oximately 10km/h. Yo u
can also switch off the hazard warning lights
using the hazard warning button. AT
TENTION ASSI ST Fu
nction of ATTENTION ASSI ST
AT TENTION ASSIST assists you on long, mon oto‐
nous journe ys, e.g. on mo torw ays and trunk
ro ads. If ATTENTION ASSIST de tects indicators
of fatigue or increasing lapses in concentration
on the part of the driver, it suggests taking a
brea k.
AT TENTION ASSIST is only an aid. It cannot
alw ays de tect fatigue or lapses in concentration
in time. The sy stem is not a substitute for a well- re
sted and attentive driver. On long journe ys,
ta ke regular breaks in good time that allow for
adequate recuperation.
Yo u can choose between two settings:
R Standard: normal sy stem sensitivity.
R Sensitive: higher system sensitivity. The
driver is warned earlier and the attention
le ve l de tected byATTENTION ASSIST is adap‐
te d according ly.
If dr owsiness or increasing lapses in concentra‐
tion are de tected, theATTENTION ASSIST: Take
a break! warning appears in the Instrument Dis‐
pla y.Yo u can ackn owledge the message and
tak e a break where necessar y.Ifyo u do not take
a break and ATTENTION ASSIST continues to
de tect increasing lapses in concentration, you
will be warned again af ter a minimum of
15 minutes. Yo
u can ha vethefo llowing status information for
AT TENTION ASSIST displa yed in the assis tance
menu of the on-board computer:
R The length of the journey since the last
break.
R The attention le vel de term ined byATTENTION
ASSIS T.
If AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended messageappears.
If a warning is given in the Instrument Displa y,
th e multimedia sy stem of fers to sear chfor a rest
area. You can select a rest area and start naviga‐ Driving and parking
19 5
Page 234 of 453

Problems with
Parking Assist PARKTRONIC Example:
vehicles with 360° Camera
When rear segments 1or all-round segments
2 light up red and theé symbol appears in
th e multifunction displa y,Pa rking Assist
PA RKTRONIC may ha vebeen deactivated due to
signal inter fere nce. Start theve hicle again and
ch eck if Parking Assist PARKTRONIC is working
at a dif fere nt location. If a
warning tone also sounds for appro ximately
two seconds everytime theve hicle is star ted, it
may be due toone of thefo llowing causes:
R The sensors are dirty: cleanthe sensors
and obser vethe no tes on care of vehicle
parts (/ page 307).
R Parking Assist PARKTRONIC has been
deactivated due toa malfunction: restart
th eve hicle. If the problem persists, consult a
qu alified specialist workshop.
Fu nction of the passive side impact pr otec‐
tion
Pa ssive side impact pr otection is an additional
Pa rking Assist PARKTRONIC function which
wa rnsth e driver about obs tacles at the side of
th eve hicle. A warning is issued when obs tacles
are de tected between the front and rear de tec‐
tion range. In order for an object on the side to
be de tected, the sensors in the front and rear
bumper must firs t de tect the object while you
are driving past it.
During the parking procedure or manoeuvring,
objects are de tected as theve hicle drives past.
If yo usteer in the direction of a de tected obs ta‐cle and
there is a risk of a lateral collision, a
wa rning is issued and the segments light up in
colour in the displa y.
The segment colour changes depending on the
dis tance tothe de tected obs tacle:
R Yello w: appr oximately 30 - 60 cm
R Red:less than appr oximately 30 cm
In order for lateral front or rear segments tobe
displa yed, theve hicle must firs t tr ave l a dis tance
of at least half of theve hicle length. Once the
ve hicle has tr avelled the length of theve hicle, all
of the lateral front and rear segments can be dis‐
pla yed. Driving and parking
231
Page 448 of 453

St
oring..................................................3 36
TIREFIT kit.............................................. 313
Ty re pressure (N otes)............................ 329
Ty re pressure monitoring sy stem
(function)............................................... 331
Ty re pressure table................................ 330
Un usual handling characteristic s.......... 328 U
Un locking
see Locking/unlocking
Un locking setting ........................................ 71
Up dates
Impor tant sy stem updates....................2 64
USB port Front stow age compartment................ .108 V
Ve hicle
Ad ditional door loc k................................ 73
Collision de tection (pa rking).................. 186
Cor rect use............................................. 28
Data acquisition...................................... 29
Data storage............................................ 29 Diagnostics connection........................... 26
Equipment...............................................19
Implied
warrant y..................................... 29
Locking (automatically). ...........................76
Locking/unlocking (emergency key)....... 77
Locking/unlocking (from inside ).............. 74
Locking/unlocking (KEYLESS-GO)...........75
Lo we ring................................................ 341
Medical aids............................................ 28
QR code rescue card............................... 29
Qualifi ed specialist workshop.................. 27
Ra ising.................................................. 337
REA CHregulation.................................... 28
Re gistration............................................. 28
St arting (eme rgency operation mode).. .152
St arting (s tart/s top button).................. 15 2
SV HC (subs tances of very high con‐
cern)........................................................ 28
Switching off (s tart/s top button)...........1 81
To wing.................................................. .246
Ve ntilating (co nvenience opening)........... 85
Ve hicle camera
Information............................................ 187
Ve hicle data
Displ aying (DYNAMIC SELECT).............. .161 Ro
of load............................................... 351
Ve hicle height........................................3 50
Ve hicle length........................................3 50
Ve hicle width.........................................3 50
Wheelbase............................................. 350
Ve hicle dimensions ................................... 350
Ve hicle identification number
see VIN
Ve hicle identification plate
EU general operating pe rmit number... .346
Pa int code............................................. 346
Pe rm issible axle load............................ .346
Pe rm issible gross mass........................ .346
VIN........................................................ 346
Ve hicle key
see Key
Ve hicle maintenance
see ASS YST PLUS
Ve hicle sensors
Information............................................ 187
Ve hicle soc ket
Indicator lamps...................................... 17 0 Index
445