
RThe tires maywearexc essively and/or
une venly, which may greatlyimpair tire
traction.
RThe driving characteristics, as well as
st eering and braking, may be greatly
impaired.
#Comply with there commended tire
pressure and check the tire pressure of
all tires including the spare wheel regu‐
larly:
Rat least once a month
Rwhen the load changes
Rbefore embarking on a longe r journey
Rif operating conditionschange, e.g. off-
ro ad driving
#Ad just the tire pressure as necessar y.
Driving withtire pressure that is too high or too
low can:
RSho rten the service life of the tires.
RCause increased tire damage.
RAd versely af fect handling characteristics and
th us dr iving saf ety, e.g. due to hydroplaning.
&
WARNING Risk of an accident due to
insuf ficient tire pressure
Ti re s with pressure that is too low can over‐
heat and bur stas a result.
In addition, they also suf fer from excessive
and/or ir regular wear, which can significantly
impair the braking properties and the han‐
dling characteristics.
#Av oid excessively low tire pressures in
all the tires, including the spare wheel.
Tire pressure which is too low can cause:
RTire defects as a result of overheating
RImpaired handling characteristics
RIrre gular wear
RIncreased fuel consum ption
&
WARNING Risk of accident from exces‐
sive tire pressure
Ti re s with excessively high pressure can
burs t because they are damaged more easily
by highw ayfill, pot holes etc.
In addition, they also suf fer from ir regular
we ar, which can significantly impair the brak‐
ing properties and the handling characteris‐
tics.
#Av oid excessively high tire pressures in
all the tires, including the spare wheel.
Excessively high tire pressure can result in:
RIncreased braking dis tance
RImpaired handling characteristics
RIrre gular wear
RImpaired driving com fort
RSusceptibility todamage
362
Wheels and tires

and one-half times aswell on the go vernment
te st track as a tire graded 100.
The relative per form ance of tires depends upon
th e actual conditions of their use, ho wever,and
may depart significantly from the norm due to
va riations in driving habits, service practices and
dif fere nces in road characteristics and climate
conditions.
Tr action grade
&
DANG ER Risk of accident due toinade‐
qu ate traction
The traction grade assigned tothis tire is
based on stra ight-ahead braking traction
te sts, and does not include either accelera‐
tion, cornering, hydroplaning or peak traction
ch aracteristics.
#Alw ays adapt your drivin gst yle and
drive at a speed tosuit the pr evailing
traf fic and weather conditions.
* NO
TEDama getothe driv etra in from
wheelspin
#Av oid wheelspin.
The traction grades – from highest tolowest –
are AA, A,B and C. Those grades represent the
tire's ability tostop on wet pa vement as meas‐
ured under controlled conditions on specified
go vernment test sur faces made of asphalt and
concr ete.
Te mp erature grade
&
WARNING Risk of accident from tire
ove rheating and tire failure
The temp erature grade forth is tire is es tab‐
lished for a tire that is proper ly inflated and
not overloaded. Excessive speed, underinfla‐
tion, or excessive loading, either separately
or in combination, can cause excessive heat
build-up and possible tire failure.
#Obser vethere commended tire pres‐
sure s and regularly check the tire pres‐
sure of all tires including the spare
wheel.
#Ad just the tire pressure as necessar y.
Thetemp erature grades are A (the highest), B
and C. They represent the tire's resis tance tothe
ge neration of heat and its ability todissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel. Sus‐
ta ined high temp erature can cause the material
of the tire todegenerate and reduce tire life, and
exc essive temp erature can lead tosudden tire
fa ilure. Grade C cor responds toa le vel of per‐
fo rm ance which all passenger car tires must
meet under therequ irements of the US Depart‐
ment of Transpor tation.
DO T,Tire Identification Number (TIN)
US tire regulations stipulate that eve rytire man‐
ufactu rer or retreader must imprint a TIN in or
on the side wall of each tire produced.
Wheels and tires 37
3

#Allow the engine tocool down before
adding antifreeze.
#Make surethat no antifreeze spills out
next tothefiller opening.
#Thoroughly clean off any antifreeze
from component parts before starting
th eve hicle.
* NO
TEDama gecaused byincor rect cool‐
ant
#Only add coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction.
Fu rther information on coolant:
RIn the Mercedes-Benz Specifications for
Operating Fluids 310.1, e.g. online at
http://be vo.mercedes-benz.com.
RAt aqu alified specialist workshop.
* NO
TEOverheating at high outside tem‐
peratures
If an inappro priate coolant is used, the
engine cooling sy stem is not suf ficiently pro‐
te cted against overheating and cor rosion at
high outside temp eratures.
#Alw ays use coolant appr ovedby
Mercedes-Benz.
#Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1.
Ha ve the coolant regularly changed at a qualified
specialist workshop.
The proportion of cor rosion inhibitor/antifreeze
concentrate in the engine cooling sy stem should
be:
RA minimum of 50% (antifreeze pr otection
down toappr oximately -35 °F (-37 °C)).
RA maximum of 55% (antifreeze pr otection
down to-49 °F (-45 °C)). Coolant
filling capacity
Capacity
Model Capacity
All models 12.7 US qt (12.0 l)
Note s on windshield washer fluid
Obser vethe no tes on operating fluids
(→page 394).
& WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Wi ndshield washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem.
#Make sure that no windshield washer
concentrate spills out next tothefiller
opening.
398 Tech nical da ta

Glovecompa rtment
Locking/unlo cking .............................. 103
H
Handbrake see Electric parking brake
Handling characteristics (unusual) ....... 360
HANDS-FREE ACCESS ................................ 68
HANDS-FREE ACCESS
see Opening theta ilgate using your foot
Hazard warning lights ............................ .125
Head restra int ............................................ 87
Fr ont (adjusting manually) ..................... 87
Fr ont (luxury head restra int) .................. 88
Re ar (lo wering from the front) ............... 89
Re ar passenger compartment
(adjusting) ............................................ .89
Re ar passenger compartment
(removing/ins talling) ............................ .89
Head-up Display Adjusting brightness (on-board com‐
pu ter) .................................................. 225 Ad
justing display elements (on-board
compu ter) ............................................ 225
Ad justing the position (on-board
computer) ............................................ 225
Fu nction .............................................. 225
Menu (on-board compu ter) .................. 225
Using the memory function ................. 100
Head-up Display see Menu (on-board computer)
Head-up Display menu see On-board computer
Headliner (care) .......................................3 38
Heating see Climate control
High beam
Ac ti
vating/deactivating .......................1 24
High-beam flasher ................................... 124
High-beam headlamps Adaptive Highbeam Assist .................. .126
High-pressure cleaning equipment
(care) ........................................................ 334
Hill start assist ........................................ 185 HOLD function
......................................... 186
Ac tivating/deactivating .......................1 86
Fu nction/no tes ................................... 186
Hood Function (active hood) .........................3 27
Opening/closing ................................. 327
Re setting (active hood) ........................ 327
Hotspot Setting up (Wi-Fi) ................................. 250
I
Identification plate Engine .................................................3 92
Re frigerant .......................................... 399
Ve hicle ................................................ 392
Ignition Switching on (s tart/s top button) .........1 43
Ignition key
see SmartK ey
Immobilizer ................................................ 80
Indicator lamp see Warning/indicator lamps
Index 483

Fastening ............................................... 36
Pr otection ............................................. .33
Seat co ver (Care) .....................................3 38
Seat heater Switching on/off ................................... 92
Seat ventilation
Switching on/off ................................... 93
Selecting a gear
see Shifting gears
Selecting a POI see De stination ent ry
Selecto r lever
see DIRECT SELECT le ver
Sensors (Care) ......................................... 336
Service Menu (on-board computer) .................. 219
Service see ASS YST PLUS
Service center see Qualified specialist workshop
Service inter val display
see AS SYST PLUS Setting a speed
see Cruise contro l
Setting summer time ..............................248
Setting the da teform at .......................... 248
Setting the distance unit ........................ 252
Setting the map scale
see Map
Shifting gears .......................................... 153
Gearshift recommendation .................. 154
Manual ................................................ 153
Short text messages
see Text message s
Side airbag .................................................3 8
Side impact pr otection ............................ 191
Side windo ws............................................. 71
Child saf etyloc kin there ar
passenger compartment ...................... .55
Closing .................. ................................
71
C
losin g with the SmartK ey.................... 73
Con venience closing feature ................ .72
Con venience opening ............................ 72
Opening .................................................7 1
Opening with the SmartK ey................... 72Problem .................................................7
3
Ro ller sunblind ...................................... 70
Size designation (tires) ...........................375
Skid chains
see Snow chains
Sliding sun roof .......................................... 75
Au tomatic functions .............................. 77
Closing .................................................. 75
Closing withth e SmartK ey.................... 73
Opening .................................................7 5
Opening with the SmartK ey................... 72
Problem .................................................7 8
Ra in closing function ............................ .77
SmartK ey................................................... 56
Fe atures ................................................ 56
Ke yring attachment .............................. 58
Mechanical key ...................................... 58
Overvie w...................................... ........
.56
Pa ni
c alarm ............................................ 57
Problem .................................................5 9
Un locking setting .................................. .57
Smartphone Cooling or heating theve hicle inte‐
ri or ...................................................... 144
494
Index

Vehicle identification number
see VIN
Ve hicle identification plate
Pa int code .......................................... .392
VIN ...................................................... 392
Ve hicle identification plate
see Model type
Ve hicle interior
Cooling or heating (smart phone) .........144
Ve hicle key
see SmartK ey
Ve hicle maintenance
see ASS YST PLUS
Ve hicle operation
Outside the USA or Canada .................. .21
Ve hicle position
Tr ansmitting ........................................ 248
Ve hicle tool kit
To wing eye .......................................... 355
Ve ntilating
Con venience opening ............................ 72
Ve ntilation
see Climate cont rol Ve
nts
see Air vents
Vi deo mode ............................................... 311
Ac tivating ............................................ 309
Ac tivating/deactivating full-screen
mode .................................................... 311
Overview ..............................................3 10
Settings ................................................ 311
VIN ............................................................ 392
Identification plate .............................. 392
Seat ..................................................... 392
Wi ndshield ........................................... 392
Vi sibility
Defrosting the windo ws....................... 139
Wi ndshield hea ter ................................ 141
Vo ice command types (Voice Control
Sy stem) .................................................... 228
Vo ice Control Sy stem .............................. 227
Application-specif ic
voic
e commands
............................................................ .228
Au dible help functions .........................2 29
Entering numbe rs................................ 229
Global voice commands ...................... 228
Impr oving speech quality .................... 229 Language setting ................................
.229
Media pla yervo ice commands ............ 235
Message voice commands .................. 236
Multifunction steering wheel (operat‐
ing) ...................................................... 227
Na vigation voice commands ................ 231
Operable functions .............................. 228
Operating saf ety .................................. 22 7
Ra dio voice commands ...................... .234
Switch voice commands ...................... 229
Te lephone voice controls .................... .233
Te xt message voice commands .......... .236
Ty pes of voice commands .................. .228
Ve hicle voice commands .................... .237
Vo ice prom pting .................................. 228
Vo ice control sy
stem
see Voic
e Cont rol Sy stem
W
Wa rning lamp
see Warning/indicator lamps
Wa rning sy stem
see ATA (anti-theft alarm sy stem)
Index 501

DOT,Tire Identification Number (TIN)
.............................................................3 73
Flat tire ................................................ 340
Inter changing ...................................... 382
Load ind ex........................................... 375
Load-bearing capacity ......................... 375
Maximum tire load ...............................3 74
Maximum tire pressure ........................ 374
MOExtended tires ................................ 341
Mounting ............................................. 387
No ise .................................................. .360
No tes on mounting .............................. 380
Overview of tire labeling ......................3 72
Re moving ............................................ 387
Re placing ............................................ 380
Re starting the tire pressure monitor‐
ing sy stem .......................................... .367
Selection ............................................. 380
Snow chains ........................................ 361
Speed rating ........................................ 375
St oring ................................................ 383
Te mp erature grade .............................. 372
Ti re and Loading Info rmation placard .. 367
Ti re characteristics .............................. 375
Ti re
pressure (n
ote s) ............................3 61Ti
re pressure monitoring sy stem
(function) ............................................. 365
Ti re pressure table .............................. 363
Ti re Quality Grading ............................. 372
Ti re size designation ............................3 75
TIREFIT kit ...........................................3 42
Tr action grade .................................... .372
Tr ead wear grade ................................ .372
Un usual handling characteristics ........ 360
Wi -Fi
Overview ............................................. 249
Setting ................................................. 249
Setting up a hotspot ............................ 250
Setting up an Internet connection ....... 297
Wi ndow airbag ...........................................3 8
Wi ndow lif ter
see Side windo ws
Wi ndo ws
see Side windo ws
Wi ndo ws(Care) ...................................... .336
Wi ndshield
Defrosting ............................................ 136
Infrared reflective ................................ 135
Re placing the wiper blades .................. 130 Wi
ndshield heater .................................... 141
Wi ndshield heating
see Windshield hea ter
Wi ndshield washer fluid .........................3 98
No tes ........................ .......................... 398
Wi ndshield w
a sher sy stem
Re filling .............................................. .332
Wi ndshield wipers
Re placing the wiper blades .................. 130
Switching on/off ................................. 129
Wi nter operation
Snow chains ........................................ 361
Wi nter tires
Setting the permanent speed limit ...... 177
Wi per blades
Ca re .................................................... 336
Changing ............................................. 130
Wire lesscharging
Fu nction/no tes ................................... 120
Mobile phone ....................................... 122
Wire lessvehicle co mponents
Declaration of con form ity ...................... 23
Index 503