Traction (definition ). ...................... 307
Tread wear .................................... .3 01
Uniform Tire Quality Grading
Standard s. ..................................... 301
Uniform Tire Quality Grading
Standard s( definition) .................... 306
Wea ri ndicator (definition) ............. 307
Whee lr im (definition) .................... 306
see Flat tire
Top Tether ............................................ 57
Tow-starting
Emergency engine starting ............ 284
Important safety notes .................. 281
Installing the towing ey e. ............... 282
Removing the towing ey e. ............. .2 82
Towing at railer
ESP ®
(Electroni cS tability Pro-
gram) ............................................... 67
Towing away
Important safety guidelines ........... 281
Installing the towing ey e. ............... 282
Notes for 4MATIC vehicles ............ 284
Removing the towing ey e. ............. .2 82
Transporting the vehicle ................ 283
With both axle sont he ground ....... 283
With front axle raised ..................... 282
Towing eye ......................................... 270
Traffic reports
see also Digita lO perator's Man-
ua l. ................................................ .2 29
Transmission
see Automatic transmission
Transmission position display
(DIRECT SELEC Tl ever) ..................... .1 30
Transporting the vehicle .................. 283
Trim pieces (cleaning instruc-
tions) ................................................. .2 67
Trip computer (on-board com-
puter) ................................................. .1 80
Trip odometer
Calling up ....................................... 180
Resetting (on-board computer) ...... 181
Trunk
Emergency release .......................... 81
Emergency release button .............. .8 1
Important safety notes .................... 78 Opening (automaticall yf rom out-
side) ................................................ .7 9
Opening (from outside the vehi-
cle, HANDS-F REE ACCESS) ... ...........
79
Opening automaticall yf rom
inside ............................................... 80
Opening/closing (manually from
outside) ............................................ 78
Trunk lid
Display message ........................... .2 15
Opening dimensions ..................... .3 20
Trunk load (maximum) ..................... .3 20
Turn signals
Display message ............................ 202
Replacing bulbs (front) ................... 106
Switching on/off ........................... 101
Two-way radio
Frequencies ................................... 313
Installatio n. .................................... 313
Transmissio no utput (maximum ). ... 313
Type identification plate
see Vehicle identification plate
U Unlocking
Emergency unlocking ....................... 77
From insid et he vehicle (central
unlocking button) ............................ .7 6
Upshif ti ndicator (on-boar dc om-
puter, Mercedes-AMG vehicles) ...... .1 88
USB devices
Connecting to the Medi aI nter-
face ............................................... 236
V
Vanity mirror (in the sun visor) ....... .2 44
Vehicle
Correct use ...................................... 28
Data acquisition ............................... 29
Display message ............................ 213
Equipment ....................................... 25
Individua ls ettings .......................... 186
Limited Warranty ............................ .2 9
Loading .......................................... 298
Locking (in an emergency) ............... 77
Locking (SmartKey) .......................... 7020
Index
SmartKey
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could: R
open the doors, thus endangering other
people or road users. R
get out and disrupt traffic. R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake. R
shifting the automatic transmission out of
park position PR
Start the engine.
There is ar isk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
G WARNING
If you attach heavy or large object stot he
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a
risk of an accident.
Do not attach any heavy or large object stot he
SmartKey. Remove any bulky key rings before
insertin gt he SmartKey into the ignition lock.
! Keep the SmartKey away from stron gm ag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey: R
with electronic devices, e.g. am obile phone
or another SmartKey. R
with metallic objects, e.g. coins or metal foil. R
inside metallic objects, e.g. am etal case
Vehicles with KEYLESS-GO star tf unction: do
not keep the SmartKey in the trunk .O therwise, the SmartKey may not be detected, e.g. when
startin gt he engine using the Start/Stop button.
SmartKey functions
C
7 To lock the vehicle D
T To open the trunk lid
Changing th es ettings of th el ocking
system You can chang et he settings of th el ockin gs ys-
tem. This mean st ha to nl yt he driver' sd oor and
th ef uel fille rf lap are unlocked when th ev ehicle
is unlocked. This is useful if you frequently travel
on your own. X
To change th es etting: pres sa nd hold the
6 and 7 buttons simultaneousl yf or
approximately six seconds until th eb attery
indicator lamp flashes twice ( Y
page 73).
If th es ettin goft he lockin gs ystem is changed
within th es ignal range of th ev ehicle ,p ressing
the 7 or 6 button:R
locks or R
unlock st he vehicle
The SmartKey no wf unction sasf ollows:X
To unlock: pres st he 6 butto no nc e.X
To unlock centrally: pres st he 6 button
twice. X
To lock centrally: pres st he 7 button.
The KEYLESS-GO function is changed as fol-
lows: X
To unlock th ed ri ver's door: touch th ei nner
surface of th ed oor handle on th ed river's
door. X
To unlock centrally: touch th ei nner surface
of th ed oor handle on th ef ront-pa ssenger
door or th er ear door.X
To lock centrally: touch th eo uter sensor
surface on on eoft he door handles.X
To restor et he factor ys ettings: pres sa nd
hold the 6 and 7 buttons simultane-
ously for approximately six seconds until the
battery check lamp flashes twice
( Y
page 73).
Mechanica lk ey
General notes
If th ev ehicle can no longer be locke do r
unlocked wit ht he SmartKey or KEYLESS-GO,
use th em echanical key.
If you use th em echanical ke yt ou nlock and
open th ed river' sd oor or th et ru nk lid, th ea nti-
theft alarm system will be triggered ( Y
page 68). Ther ea re several ways to tur no ff th ea larm:X
To deactivat et he alarm with th ek ey: press
the 6 or 7 butto nont he key.
or X
Inser tt he SmartKey int ot he ignition lock.
or X
To deactivat et he alarm with KEYLESS-GO:
pres st he Start/Sto pb utto nint he ignition
lock. The SmartKey must be in th ev ehicle.
or X
Loc koru nlock th ev ehicle usin gK EY LESS-
GO. The SmartKey must be outside th ev ehi-
cle.
If you unlock th ev ehicle usin gt he mechanical
key, th ef uel fille rf lap will no tbeu nlocked auto-
matically. X
To unlock th ef ue lf ille rf lap: insert the
SmartKey int ot he ignition lock.
Removing th em echanica lk ey
X
Push release catch C in th ed irection of the
arrow and at th es ame tim er emove mechan-
ical key D from th eS ma rtKey.
For further informatio na bout:R
Unlockin gt he driver' sd oor ( Y
page 77)R
Unlockin gt he trunk ( Y
page 81)R
Lockin gt he vehicle ( Y
page 77)
Insertin gt he mechanica lk eyX
Push mechanical key D completely int ot he
SmartKey until it engages and release
catch C is back in its basic position.72
SmartKey
Opening and closing
X
Press the lockin gb utton on the driver’s door
( Y
page 76).X
Check whether the lockin gk nobs on the
front-passenger door and the rear doors are
still visible. Press down the lockin gk nobs by
hand, if necessary. X
Close the driver's door. X
Take the mechanical key out of the SmartKey
( Y
page 72).X
Insert the mechanical key into the lock of the
driver's door as far as it will go.
X
Turn the mechanical key clockwise as far as it
will go to position G .X
Turn the mechanical key back and remove it. X
Make sure that the doors and the trunk lid are
locked. X
Insert mechanical key into the SmartKey
( Y
page 72).
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-theft
alarm system is not armed.
Trunk
Important safety notes
G WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion .T here is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open. G WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is ar isk of injury, particu-
larly in the event of sudden braking or as ud-
den change in direction.
Always store object ssot hat they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
( Y
page 320).
You should preferably place luggage or loads in
the trunk .O bserve the loading guidelines
( Y
page 237).
Do not leave the SmartKey in the trunk .Y ou
could otherwise lock yourself out.
The trunk lid can be: R
opened and closed manually from outside R
opened automatically from outside R
opened automatically from inside R
released with the emergenc yr elease from the
inside
Opening/closing from outside
Opening
X
Press the 6 button on the SmartKey. X
Pull handle C . X
Raise the trunk lid.78
Trunk
Opening and closing