#
Immedia tely rinse su rfaces that come in
con tact wi thDEF when filling with water
or remo veDEF wi tha damp clo thand
cold water.
If DEF has already cr ystallized, clean using a
spon geand cold water. If
yo u open the DEF tank, small amounts of
ammonia vapor may be released. Do not inhale
any ammonia vapor that may be released. Fill the
DEF tank only in well-ventilated areas.
DEF consum ption and filling capacity
DEF consum ption
Like fuel consum ption, DEF consum ption is highly
dependent upon driving style and operating con‐
ditions. DEF consum ption is usually within a
ra nge of 0 and 10% of the fuel consum ption. If
necessar y,DEF mu stbe refilled in acco rdance
with the instructions when there fill message is
displa yed in the instrument clus ter.This may also
be necessary between the scheduled mainte‐
nance.
To tal capacity of DEF tank Ve
hicl eT otal capacity
All model s5 .8gal (22 liters ) Exhau
stgas af tertre atment
The vehicle must be operated with DEF if the
ex haust gas af tertre atment sy stem is tofunction
cor rectl y.
If yo u operate theve hicle without DEF or with
emissions-rele vant malfunctions, the legal MOT
appr oval is in validated. The vehicle could be pro‐
hibited from public road use byan of ficial ordi‐
nance.
It may be improper or punishable in some coun‐
tries tooperate a vehicle that uses no DEF or one
th at does not comply with the specifications of
th ese operating instructions.
Engine management monitors theex haust gas
af te rtre atment components for compliance with
emissions la wsand regulations. If you attem ptto
operate theve hicle without DEF, with diluted DEF
or with a dif fere nt reducing agent, this will be
de tected bythe engine management sy stem.
Other emissions- releva nt malfunctions, e.g.
me tering malfunctions or sensor er rors, are also
de tected and log ged. The engine management sy
stem subsequently
pr eve nts the engine being restar ted af ter issuing
a wa rning message.
Therefore add DEF tank regular lyduring vehicle
operation or, at the latest, af terre ceiving thefirst
wa rning message via the instrument clus ter. Engine oil
Note
s on engine oil
Obser vethe no tes on operating fluids
(/ page 340). *
NO
TEEngine damage caused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters other
th an those which meet the specifica‐
tions necessary forth e prescribed
service inter vals. #
Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil changed af terthe
prescribed inter vals. Mercedes-Benz
recommends having the oil
ch anged at a qualified specialist workshop.
Fu rther information on engine oil and oil filter:
R inthe MB Specifications for operating fluidsat
http://be vo.mercedes-benz.com (by entering
th e designation)
R at a qualified specialist workshop 344
Tech nical da ta
Quality and capacity of engine oil
%
The containers of
theva rious engine oils are
mar ked with theAC EA (Association of Euro‐
pean Automotive Manufacturers) and/or API
(America Petroleum Institu te) classifications.
Only use appr oved engine oils that cor re‐
spond tothe MB Specifications for operating
fl uids and the prescribed ACEA and/or API
classi fications named bel ow. Engine oils of
ot her grades are not permissible and can
re sult in the loss of the New Vehicle Limited
Wa rrant y.The use of other engine oils not
appr ovedfo r diesel engines can dama gethe
diesel particulate filter (DPF).
MB- Freigabe orMB-App roval Gasoline engine MB-F
reigabe orMB-
Appr oval
M2 74 229.5Diesel engine
sMB-Freigabe orMB-
Appr oval
OM642/OM65 1228.51,229.3 1,
229.5 1,229.52* *
Re commended for lo west possible fuel con‐
sum ption (lo westSA E viscosity class in ea ch
case; obser vepossible restrictions of the
appr ovedSA E viscosity classes).
To achie vethe lo west possible fuel consum ption,
it is recommended touse the engine oil specifica‐
tions mar ked in theta ble forth e lo west SAE vis‐
cosity class. Obser veany possible restrictions of
th e appr ovedSA E viscosity classes.
If th e engine oils lis ted in theta ble are not availa‐
ble, you may add a maximum 1.1 US qt (1.0 liter)
of thefo llowing engine oils once only:
R Vehicles with a gasoline engine: MB-Frei‐
ga be or MB-Appr oval 229.3 or ACEA A3/B4
R Vehicles with a diesel engine: MB-Freigabe
or MB-Appr oval 228.5, 229.3 or 229.5
Multig rade engine oils of the prescribed SAE clas‐
si fication (viscosity) may be used all year round,
ta king the outside temp erature into account. Vi
scosity of the engine oil
* NO
TEEngine damage due toincor rect
SA E classi fication (viscosity) of the
engine oil If
th eSA E classi fication (viscosity) of the
engine oil added is not suitable for prolonged
low outside temp eratures, it may cause
engine damage.
The temp erature readings of theSA E classi fi‐
cation are al ways based on fresh oil. Engine
oil ages when driving as a result of soot and
fuel residue. The characteristics of engine oil
de teriorate significantly at low outside tem‐
peratures. #
Use an engine oil of the appropriate SAE
classi fication at low outside temp era‐
tures. #
Use oil for all-year-round operation. The
temp erature readings of theSA E classi fica‐
tion are al ways based on fresh oil. The temp era‐
ture characteristics of the engine oil, especially at
low outside temp eratures, can de teriorate signifi‐
cantly due toaging when driving.
Therefore, Mercedes-Benz recommends that you
ch ange the engine oil before thest art of the cold
season. Only use an appr oved engine oil in the
prescribed SAE classi fication forth is purpose. The viscosity indicates
theflow characteristics of
a fluid. With rega rd toengine oil, a high viscosity
is synonymous with thick liquid and a low viscos‐
ity with thin liquid. Depending on the outside
te mp eratures, select the engine oil according to
th eSA E classi fication (viscosity). The table sho ws
th eSA E classi fications tobe used. The low tem‐
perature characteristics of engine oils can de teri‐
orate significantly during operation due toaging
and soot and fuel acc retion, forex ample. A regu‐
lar oil change with an appr oved engine oil in the
appropriate SAE classi fication is therefore
stro ngly recommended. Te
ch nical da ta345
Ad
ditive
* NO
TEEngine damage due touse of addi‐
tives in the engine oil The use of additional additives in
the engine
oil can damage the engine. #
Do not use any additional additives in
the engine oil. Miscibility of engine oil
The benefits of high-quality engine oils are
re
duced bymixing oil.
We recommend that you on lyuse engine oil of
th e same grade and SAE classi fication as the oil
fi lled at the last oil change. If, in exceptional
cases, engine oil of the type in the engine is not
av ailable, use ano ther appr oved mineral or syn‐
th etic engine oil.
Ve hicles with a diesel engine: ifth e grade is
not available, you may also refill with engine oils
acco rding toMB-F reigabe or MB-Appr oval 228.5,
229.3 or 229.5. The refill qu antity is then limited
to maximum 1.1 US qt (1.0 liter).
Yo u must then ha vean oil change car ried out at
th e earliest possible opportunit y.
Ve hicles with a gasoline engine: ifth e grade is
not available, you may refill with engine oils
acco rding toMB-F reigabe or MB-Appr oval 229.3
or AC EA A3/B4. The refill qu antity is then limited
to maximum 1.1 US qt (1.0 liter).
Yo u must then ha vean oil change car ried out at
th e earliest possible opportunit y.
Engine oils are di fferentiated according to:
R Engine oil brand
R Grade (MB-F reigabe or MB-Appr oval)
R SAE classi fication (viscosity)
Oil change inter val
The on-board computer automatically sho ws the
date of the next oil change as an event messa ge
on the displa y.
Mercedes-Benz recommends having the oil
ch anged at a qualified specialist workshop. Engine oil capacities Engine
Engine oil
M2 74 Approx. 11.1 qt
(10.5 liters)
OM642 Approx.13 .2 qt
(12.5 li ters)
OM651 (rear wheel
drive) Appr
ox.12 .2 qt
(1 1. 5 liters) Information on oil consum
ption
Depending on the driving style, theve hicle con‐
sumes a maximum of 1.1 US qt (1.0 liter) of
engine oil per 620 miles (1000 km).
In thefo llowing cases, oil consum ption may also
exc eed this limit:
R The vehicle is ne w.
R You use theve hicle mostly under arduous
conditions.
R You drive frequent lyat a high engine speed.
Re gular maintenance is a prerequisite forfa vo ra‐
ble consum ption figures. You can only assess the
oil consum ption af ter a long journe y.Check the
oil le vel in the engine regularly, e.g. weekly or
eve rytime youre fuel. Note
s on brake fluid Obser
vethe no tes on operating fluids
(/ page 340). &
WARNING Risk of an accident due to
va por poc kets form ing in the brake sys‐
tem
The brake fluid con stant lyabsorbs moisture
from the air. This lo wersthe boiling point of
th e brake fluid. If the boiling point is too lo w,
va por poc kets may form inthe brake sy stem
when the brakes are applied hard.
This causes the braking ef fect to be impaired. #
Have the brake fluid rene we d at the
specified inter vals. *
NO
TEDama getopaint, plastic or rubber
by brake fluid There is a
risk of damage toproperty if brake
fl uid comes into con tact wi thpaint, plastic or
ru bber. 346
Tech nical da ta
#
Make sure that no windshield washer
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windshield washer fluid Uns
uitable windshield washer fluid may dam‐
age the plastic sur face of theex terior lighting. #
Only use windshield washer fluid which
is also suitable for use on plast ic surfa‐
ces, e.g. MB SummerFit or MB Winter‐
Fit. *
NO
TEBlocked spr aynozzles caused by
mixing windshield washer fluids #
Do not mix MB SummerFit and MB Win‐
te rFit with other windshield washer flu‐
ids. Do not use distilled or de-ionized
water.Other‐
wise, thefill le vel sensor may give a false reading.
Information on the windshield washer fluid
Re commended windshield washer fluid:
R abovefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit
Mixing ratio
Fo rth e cor rect mixing ratio, referto the informa‐
tion on the anti-freeze container.
Mix thewa sher fluid with windshield washer fluid
all year round.
Fi lling capacities
Wi ndshield washer sy stem
Wa sher fluid
5.8 qt (5.5 l) Re
frigerant Note
s onrefrigerant
Obser vethe no tes on operating fluids
(/ page 340).
% Yo
ur vehicle's climate contro l system can be
fi lled with R‑134a refrigerant. The refrigerant
R‑134a contains fluorinated greenhouse gas.
If yo ur vehicle is filled with R‑134a refrigerant, the
fo llowing information applies: *
NO
TEDama gecaused byincor rect refrig‐
erant If
th e incor rect refrigerant is used, this can
damage the climate cont rol sy stem. #
Use only R‑134a refrigerant or thePAG
oil appr ovedfo ryo ur vehicle by
Mercedes-Benz. #
The appr ovedPA G oil may not be mixed
with any other PAG oil that is not
appr ovedfo r R‑134a refrigerant. Maintenance
work, such as adding refrigerant or
re placing components, may be car ried out only
by aqu alified specialist workshop. All the applica‐
ble regulations relating tothis and theSA E J639
st andard must be adhered to.
All workon the climate cont rol sy stem should
alw ays be car ried out at a qualified specialist
wo rkshop. Example:
refrigerant warning label
1 Warning symbols
2 Refrigerant capacity
3 Applicable standards
4 PAG oil part number
5 Refrigerant type
Wa rning symbols 1referto thefo llowing:
R Potential dangers
R The per form ance of main tenance workat a
qu alified specialist workshop Ve
hicle data Information on
vehicle dimensions The
following section con tains impor tant tech ni‐
cal da taforyo ur vehicle. Your vehicle documents
contain fur ther vehicle-specific and equipment-
dependent tech nical da tasuch as vehicle dimen‐
sions and weights. 348
Tech nical da ta
Display messages
Possible causes/consequences and 0050 0050Solutions
00B3
Engine Oil Level Cannot
Be Measured *T
he electrical connection tothe oil le vel sensor has been inter rup‐
te d or the oil le vel sensor is faulty. #
Visit a qualified specialist workshop.
00B2
Engine Oil Pressure Stop
Switch Off Engine *D
isplay message for cer tain engines only:
The engine oil pressu reistoo lo w.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil pressure #
Avoid driving with insuf ficient engine oil pressure. #
Stop in a safe location immediately. Do not continue driving. #
Consult a qualified specialist workshop.
00B2
Check Engine Oil Level
(Add 1 Liter) *T
he engine oil le vel has fallen tothe minimum le vel.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Che ckthe engine oil le vel at the next fuel stop.
Re fill engine oil (/ page 281).
Obser vethe no tes on engine oil (/ page 344).
00B2 Engine Oil Reduce Oil
Level *D
isplay message for cer tain engines only:
The engine oil le vel is too high.
* NO
TEEngine damage caused bydriving with excess engine
oil #
Avoid long journe yswith excess engine oil. #
Visit a qualified specialist workshop immediately and ha vethe
engine oil suctioned off.
00B2
Engine Oil Level Low
Stop Vehicle Turn
Engine Off *D
isplay message for cer tain engines only:
The engine oil le vel is too lo w.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Stop in a safe location immediately. Do not continue driving. #
Switch off the engine. #
Check the engine oil le vel.
Ad d engine oil (/ page 281).
Obser vethe no tes on engine oil (/ page 344). Display messages and
warning and indicator lamps 365
Display messages
Possible causes/consequences and 0050 0050Solutions
00B2
Check Engine Oil At
Next Refueling *T
he engine oil le vel has fallen tothe minimum le vel.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Che ckthe engine oil le vel at the next fuel stop.
To p up engine oil (/ page 281).
Obser vethe no tes on engine oil (/ page 344).
003D Stop Vehicle Leave
Engine Running *T
he battery's charge leve l is too lo w. #
Stop in a safe location immediately. Do not continue driving! #
Let the engine run. #
Do not continue driving until the display message goes out.
003D
Stop Vehicle See Opera-
tor's Manual *T
he battery is no longer being charge d and has reached an exces‐
sively low battery charge leve l.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop in a safe location immediately. Do not continue driving. #
Switch off the engine. #
Consult a qualified specialist workshop.
003D
12 V Battery See Opera-
tor's Manual *T
he engine is off and the battery charge leve l is too lo w. #
Switch off electrical consumers that are not required. #
Let the engine runfo r a few minutes or drive an extended dis‐
ta nce.
The battery is charge d.
003D
See Operator's Manual *T
he battery is no longer being charge d.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop in a safe location immediately and switch off the engine. #
Consult a qualified specialist workshop.
00AC
Coolant Too Hot Stop
Vehicle Turn Engine Off *T
he coolant is too hot. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. 366
Display messages and warning and indicator lamps
1,
2, 3 ...
3-zone automatic climate control
(operating unit) .................................... .101
12 V so cket
see Soc ket (12 V)
11 5 V soc ket
see Soc ket (1 15 V)
360° Camera ........................................ 15 9
Care ................................................ .288
Fu nction ........................................... 15 9
Selecting a view ................................ 161
Switching au tomatic operation
on/off (rear view camera) ................. 161A
ABS (Anti-lock Braking Sy stem) .......... 14 6
Ac celeration
see Using kickdown
Ac cess data
Setting (Blue tooth®
) .........................2 55
Ac oustic locking verification signal
Ac tivating/deactivating ...................... 47
Ac tivating/deactivating the HOLD
function ................................................. 15 5
Ac tive Brake Assi st.............................. 14 9
Fu nction/no tes ................................ 14 9
Setting .............................................. 15 0
Ac tive Di stance Assist DISTRO NIC..... 15 2
Calling up a speed ............................ 15 3
Fu nction ........................................... 15 2
Increasing/decreasing speed ........... 15 3
Re quirements .................................. .153
St eering wheel buttons ..................... 15 3
St oring a speed ................................ 15 3
Switching off/deacti vating ............... 15 3
Switching on/activating ................... 15 3
Sy stem limitations ............................1 52
Ac tive Lane Keeping Assist .................167
Fu nction ........................................... 167
Sy stem limitations ............................1 67
Tr ailer operation .............................. .167
Ac tive Parking Assist
Maneuvering assis tance ................... 161
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive Highbeam Assist
Fu nction ............................................. 86
Switching on/o ff................................ 86
Ad d-on equipment .................................. 22 Ad
d-on equipment guidelines ............... 22
Ad ditional turn signal light (all-
wheel drive vehicles) ............................. 92
Ad diti ve ................................................. 344
DEF .......................................... 136, 343
Engine oil ......................................... 344
Ad diti ves
Fu el .................................................. 341
Ad diti ves (DEF)
see DEF
Ad diti ves (engine oil)
see Additive
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
ADR (working speed control) Adjusting .......................................... 16 9
Fu nction ........................................... 16 8
Switching on/off .............................. 16 9
Af ter-sales service center
see ASS YST PLUS
Air nozzles see Air vents
Air vents ........................................1 04,105
adjusting (front) ................................ 104
Ad justing (roof) ................................. 105
Re ar passenger compartment .......... 105
Airbag ...................................................... 35
Ac tivation ........................................... 32
Fr ont airbag (driver, front
passenger) ......................................... 35
Ins tallation locations .......................... 35
Overview ............................................ 35
Pr otection impaired ............................36
Pr otection pr ovided ............................ 35
Side airbag ........................................ .35
Wi ndow cur tain airbag ........................ 35
Alarm sy stem
see ATA (Anti-Theft Alarm sy stem)
Alertness assistant see ATTENTION ASSIST
All-wheel drive Engaging ...........................................1 25
Engaging/disengaging ..................... .125
LO Wrange ........................................ 12 6
No tes ................................................ 124
Alternative route
see Route Index
387
Direction indicator
see Indicator
Display (care) ........................................ 290
Display (MBUX multimedia sy stem)
Settings ............................................ 209
Display (multimedia sy stem) .............. 200
Home screen .................................... 19 9
No tes ................................................ 19 8
Operating ......................................... 200
Setting acoustic operating feed‐
back .................................................2 00
Display (on-board comp uter)............... 17 7
Display message .................................. 355
Calling up (on-board co mputer) ........ 355
No tes ............................................... 355
Display messages 00AC ............................................... 364
00B2 - - -mph................................... 361
003D 12V Battery See Operator's
Manual .............................................3 66
0099 Additive Sy stem Fault Emer‐
ge ncy Op.: XXX mph See Opera‐
to r's Manual .................................... .369
0099 Additive Sy stem Fault See
Operator's Manual ...........................368
0099 Additive Sy stem Fault Starts
until Emerg. Op.: XXX See Opera‐
to r's Manual .................................... .368
Û ATTENTION ASSIST Inopera‐
tive ................................................... 364
Û ATTENTION ASSIS T:Take a
Break! ............................................... 364
0049 AutoLamp Function Inopera‐
tive .................................................. .375
004D Check Brake Fluid Le vel.......... 358
00AC Check Coolant Le vel See
Opera tor's Manual ............................ 367
00B2 Check Engine Oil AtNext
Re fueling .......................................... 366
00B2 CheckEngine Oil Le vel (Add
1 Liter) ............................................ .365
003A CheckFuel Filter ..................... 364
0049 Check Left Low Beam (e xam‐
ple) .................................................. .376
0077 Check Tire s ............................. 37000B2
Check Washer Fluid ................. 371
00AC Coolant Too Hot Stop Vehicle
Tu rn Engine Off ................................ 366
00CE Currently Un available Cam‐
era Dirty .......................................... .362
0025 Currently Un available See
Operator's Manual ...........................360
00E5 Currently Un available See
Operator's Manual ...........................360
00AF Don't Forget Your Key............ .370
00B3 Engine Oil Le vel Cann otBe
Measured ......................................... 365
00B2 Engine Oil Le vel Low Stop
Ve hicle Turn Engine Off .................... 365
00B2 Engine Oil Pressure Stop
Switch Off Engine ............................. 365
00B2 Engine Oil Reduce Oil Le vel.... .3 65
0075 Front Left Malfunction
Service Required (e xample).............. 356
00D4 Fuel Le vel Low ........................ 364
0024 Incline TooSt eep See Opera‐
to r's Manual ..................................... 357
003B Inoperative Battery Low ..........372
003B Inoperative Refuel Vehicle .......3 72
0025 Inoperative See Operator's
Manual .............................................3 60
00E5 Inoperative See Operator's
Manual ............................................. 359
007A Inoperative See Operator's
Manual ............................................. 359
003B Inoperative See Operator ’s
Manual ............................................. 372
00AF KeyNot De tected (red dis‐
pl ay messa ge)...................................3 71
00AF KeyNot De tected (white dis‐
pl ay messa ge)...................................3 71
0075 Left Side Cur tain Airbag Mal‐
function Service Required (e xam‐
ple) .................................................. .356
0049 Malfunction See Operator ’s
Manual ............................................. 375
ð Maximum Speed Exceeded ..... 361
00AF Obtain a New Key.................... 371 392
Index