
Re
ctifying problems with the hot- water auxili‐
ary hea ter
FA IL00A3 00A3 appea rson there mo tecontrol dis‐
play
Po ssible cause:
R Signal transmission between transmitter and
receiver is malfunctioning. #
Change your position in relation totheve hi‐
cle, moving closer if necessar y.
FA IL appea rson there mo tecontrol display
Po ssible cause:
R The star ter battery is not suf ficiently charge d. #
Charge thest ar ter batter y.
Po ssible cause:
R The fuel tank is not filled up tothere ser ve
le ve l. #
Refuel at the nearest filling station.
FA IL appea rson there mo tecontrol dis‐
play 0099 0099
Po ssible cause:
R The auxiliary heating has malfunctioned. #
Have the auxiliary heating checked at a quali‐
fi ed specialist workshop. Au
xiliary warm-air heater Fu
nction of the auxiliary warm-air heater
Obse rveth e no tes on auxiliary heating
(/ page 126).
The air-intake opening forth e auxiliary warm-air
hea ter is located on the inner side of the left
front seat base. The warm-air outlet is on there ar
side of the left front seat.
The auxiliary warm-air hea ter supplements the
climate control sy stem of your vehicle and has an
auxiliary heating function.
The stationary heater will swit choff automatically
when the engine is switched off or when the set
heating duration has elapsed.
The immediate heating mode of the auxiliary
heating supports the climate cont rol sy stem
when the engine is running and the outside tem‐
perature is lo w. Yo
u ha vethefo llowing options for operating the
auxiliary heating:
R The swit chclock in thestow age compartment
below the cent reconsole
R The switch clock on the lo wer centre console
R Remo tecontrol
Yo u can use the switch clock toset up tothree
departure times for pre-entry clima tecontrol.
Au xiliary warm-air heater switch clo ckove r‐
vi ew
Use the switch clock toconfigu rethefo llowing
settings:
R Swit ching immediate heating mode on/off
R Setting up tothre e preselection times
R Setting the operating duration within a range
of 10 to120 minutes or tocontinuous ope ra‐
tion
R Adjusting the heating le vel (preselec tedte m‐
perature). 1
Program column on the display
0059 Selects preselection memory number
1–3
Mon–Sun, sets da ys
2 Menu bar on the display
0084 Switches immediate heating mode
on/o ff
0045 Setsthe preselection periods
0045 Setsthe da y,time and operating du ra‐
tion
00D1 Setsthe heating le vel
3 Displ aysection for time, heating le vel and
operating duration on the display
00D5 Continuous operation on 13 0
Climate cont rol

00D1
Heating le vel set
4 Selects an option in program column 1or
on menu bar 2(forwards)
Increases values
5 Confirms a selection or setting
6 Status bar
0084 Heating mode on
7 Activates the switch clock
Cancels or term inates the settings in a menu
8 Selects an option in program column 1or
on menu bar 2(backwards)
Re duces values
Operating the switch clock (auxiliary warm-
air heater)
Ac tivating the switch clock
The switch clo ckwill swit chtostandby mode
af te rte n seconds. The displ aywill go off.
Sa ved settings will not be lost when the switch
clock switches tostandby mode. #
Press and hold the00D0 button until menu
bar 2and the time are shown on the dis‐
pla y.
Setting the da y,time and ope rating duration
When you swit ch the auxiliary heating on forthe
fi rs t time af ter a malfunction, set the day and
time.
% Yo
u can find fur ther information on malfunc‐
tions under "Problems with the auxiliary
wa rm-air hea ter". #
Activate the switch cloc k. #
Press the00CF or00DB button until the0045
symbol flashes on menu bar 2.#
Press the0076 button.
The selected day will flash in prog ram column
1. #
Press the00CF or00DB button toselect the
desired da y. #
Press the0076 button.
The selected day will be stored.
The hour value on the clock will flash. #
Set the hour and minute value on the clock to
cor respond with the day and confirm using
th e0076 button.
The time will be stored. Program column 1
will not be shown and the operating duration
will flash on display section 3.The operating duration set is
the default setting
fo r immediate heating mode. You can set the
operating duration within a range of 10to
12 0 minutes or tocontinuous ope ration. #
Press the00CF or00DB button toset the
minute value or the00D5 symbol toselect
continuous operation. #
Press the0076 button.
The operating duration will be stored and the
time will be shown on displ aysection 3.
Setting the heating le vel
Yo u can set the heating le velto between 10and
30.
The heating le vel cor responds toa preselected
te mp erature forth eve hicle interior. This is a
guide value and, depending on the ambient tem‐
perature, may dif fer from the actual vehicle inte‐
ri or temp erature. #
Activate the switch cloc k. #
Press the00CF or00DB button until the00D1
symbol flashes on menu bar 2. #
Press the0076 button.
The heating le vel will flash on display section
3. #
Press the00CF or00DB button toset the
desired heating le vel. #
Press the0076 button.
Immediate heating mode #
Toswitch on: activatethe switch cloc k. #
Press the00CF or00DB button until the0084
symbol flashes on menu bar 2. #
Press the0076 button.
The 0084 symbol will be shown on display
section 3and the operating duration will
fl ash. #
Set the operating duration.
The temp erature le vel will be shown on dis‐
play section 3. #
Toswitch off: pressthe00CF or00DB button
until the0084 symbol flashes on menu bar
2. #
Press the0076 button.
The 0084 symbol will not be shown on display
section 3.
The auxiliary heating will continue torunfor
appr oximately thre e minutes and will then
switch off automaticall y. Climate cont
rol131

#
Turn battery co ver2 anticlockwise using a
suita ble object, e.g. a coin, and remo veit. #
Check the seal on battery co ver2 for dam‐
age and replace it if necessar y. #
Remo vebattery 3. #
Insert a new battery 3into the battery com‐
partment with the positive term inal facing
up wa rds.
Use a lint-free clo thtodo so. #
Position battery co ver2 sothat mark 1on
th era ised area points between two recesses
4. #
Turn the battery co ver clockwise as far as it
will go. #
Check all the functions of there mo tecontrol.
Re ctifying problems with the auxiliary warm-
air heater
The display section of the switch clock sho ws
th e message Err.
Po ssible cause:
R The fuel le vel in the fuel tank is too lo w.
The auxiliary heating switches off automati‐
call y. #
Refuel theve hicle. #
Start the auxiliary heating se veral times until
th e fuel lines are full.
Po ssible cause:
R A malfunction has occur red.
The auxiliary heating switches off automati‐
call y. #
Have the auxiliary heating checked at a quali‐
fi ed specialist workshop. The message
iniappears on the display sec‐
tion of the switch clock or the clock is flash‐
ing.
Po ssible cause:
R The on-board electrical sy stem voltage has
been inter rupte d. All sa ved settings ha ve
been dele ted.
Au tomatic hardware de tection is cur rently
acti ve. #
When automatic hardware de tection is com‐
ple te, set the da y,time, operating du ration
and preselection pe riod (/ page131).
The indicator lamp on the remo tecontrol
flashes redra pidl y.
Po ssible cause:
R The remo tecontrol battery is dis charge d.
Data transmission is not possible. #
Replace there mo tecontrol battery
(/ page 133).
The indicator lamp on there mo tecontrol
flashes red and green in rapid succession.
Po ssible cause:
R There is no connection between there mo te
control and there ceiver in theve hicle. #
Change your position in relation totheve hi‐
cle, e.g. hold there mo tecontrol higher or
mo veitto the side. #
Movecloser.
If yo u cannot make a connection and the auxiliary
heating is switched on, you can swit choff the
auxiliary heating only via the switch clock in the
ve hicle.
Po ssible cause:
R The remo tecontrol is not synchronised. #
Have there mo tecontrol synchronised at a
qu alified specialist workshop.
The indicator lamp on there mo tecontrol
slo wly flashes red and green alternatel y.
Po ssible cause:
R The remo tecontrol is not synchronised. #
Have there mo tecontrol synchronised at a
qu alified specialist workshop. 134
Climate cont rol

Driving
Ke
y positions &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in part icular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf fic.
R operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. &
DANG ER Risk of death caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vethe engine or, if present,
th e auxiliary heating running in an
enclosed space wi thout suf ficient venti‐
lation. &
WARNING Risk offire due toflammable
material in the engine compartment or
th eex haust sy stem
Flammable materials may ignite. #
Therefore, check regularly that there are
no flammable materials in the engine
compartment or on theex haust sy stem. 005A
Inserting/ removing thekey
0047 Switching on the po wer supp ly
0048 Switching on the ignition
0049 Start the engine
% If
th eke y does not belong totheve hicle, it
can still be turned in the ignition loc k.How‐
eve r,th e ignition will not be switched on. The
engine cann otbe star ted. #
Insert theke y into the ignition lock in position
005A and turn it tothe desired position. Ru
nning-in no tes Pr
otect the engine during thefirs t1, 500 km by:
R driving at varying road and engine speeds.
R shift tothe next highest gear at theve ry lat‐
est when the needle reaches the last third
before there d area in there v counter.
R avoiding stre ss on theve hicle such as driving
at full thro ttle.
R not shi fting manually toa lo werge ar to brake.
R afte r1, 500 km, gradually increasing the
engine speed and accelerating theve hicle up
to full speed.
R vehicles with automatic transmission: not
depressing the accelerator pedal be yond the
pressure point (kickdown).
This also applies if the engine or parts of the driv‐
et ra in ha vebeen replaced.
Also obser vethefo llowing running-in no tes:
R Afterth eve hicle has been delivered or af ter
re pairs, the sensor sy stem of some driving
sy stems and driving saf ety sy stems adjusts
itself automatically af terth eve hicle has been
driven a cer tain dis tance. Full sy stem ef fec‐
tiveness is not reached until the end of this
te ach-in process.
R New and replaced brakepads, brake disks and
tyres only reach their optimal braking ef fect
and traction af ter appro ximately 10 0 km. 13 6
Driving and pa rking

Un
tilthen, compensate forth ere duced brak‐
ing ef fect by applying greater pressure tothe
brake pedal. Driving tips
Note
s on driving &
WARNING Risk of accident due to
objects in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal.
This jeopardises the operating and road
saf ety of theve hicle. #
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll. #
Ensure floor mats and carpets cannot
slip and pr ovide suf ficient room forthe
pedals. #
Do not lay multiple floor mats or carpets
on top of one ano ther. &
WARNING Risk of accident due toincor‐
re ct foot we ar
Incor rect foot we ar includes, forex ample:
R shoes with plat form soles
R shoes with high heels
R slippers
There is a risk of an accident. #
Alwayswe ar suitable foot we ar so that
yo u can operate the pedals safely. &
WARNING Risk of accident when ignition
switched off due tosteering wheel lock‐
ing
If yo u swit choff the ignition when theve hicle
is stationar y,yo u can no lon gerst eer the
ve hicle. #
Before theve hicle begins toroll, switch
on the ignition todeactivate steering
wheel locking. &
WARNING Risk of accident if the ignition
is switched off while driving
If yo u swit choff the ignition while driving,
saf ety functions are restricted or no longer
av ailable. This may af
fect the po werst eering sy stem
and the brake forc e boosting, forex ample.
Yo u will need touse considerably more force
to steer and brake, forex ample. #
Do not swit choff the ignition while driv‐
ing. &
DANG ER Risk of death caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vethe engine or, if present,
th e auxiliary heating running in an
enclosed space wi thout suf ficient venti‐
lation. &
WARNING Risk of skidding and of an
accident due toshifting down on slippery
ro ad sur faces
If yo u shift down on slippery road sur faces to
inc rease the engine braking ef fect, the drive
wheels may lose traction. #
Do not shift down on slippery road sur‐
fa ces toinc rease the engine braking
ef fect. &
DANG ER Risk of fata l injury due topoi‐
sonous exhaust gases
If th eta ilpipe is bloc ked or suf ficient ventila‐
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter theve hi‐
cle. This is the case when theve hicle
becomes stuck in sn ow,fo rex ample. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. #
Open a window on the side of theve hi‐
cle facing away from the wind toensure
an adequate supply of fresh air. *
NO
TEDama getothe driv etra in and
engine when pulling away #
Do not warm upthe engine while the
ve hicle is stationar y.Pull away immedi‐
atel y. Driving and pa
rking 137

Au
tomatic transmission DIRECT SELECT le
ver Fu
nction of the DIRECT SELECT le ver &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in part icular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf fic.
R operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. &
WARNING Risk of accident due toincor‐
re ct gearshifting
If th e engine speed is higher than the idle
speed and you engage the transmission posi‐
tion 005Bor005E, theve hicle may accelerate
sharply. #
Ifyo u engage the transmission position
005B or005E when theve hicle is at a stand‐
st ill, alw ays depress the brake pedal
fi rm lyand do not accelerate at the
same time. Ve
hicles with 7-speed automatic transmis‐
sion: &
WARNING Risk of accident due tothe
ve hicle rolling away
When the engine is switched off, the auto‐
matic transmission shifts into neutral position
005C. #
Always shift topark position 005Dbefore
switching off the engine. #
Secure against rolling away with the
parking brake. *
NO
TETransmission damage due toshift‐
ing at high engine speed or when the
ve hicle is rolling Yo
u can damage the automatic transmission
if yo u shift from 005Bto005E , from 005Eto005B or
directly to005D when the engine speed is too
high or theve hicle is rolling. #
Only change the transmission position
when theve hicle is stationar y. Depending on
the transmission, the automatic
transmission switches totransmission position
005D (9-speed au tomatic transmission) or005C (7-
speed automatic transmission) when switching
off the engine. The po wer transmission between
th e engine and transmission is inter rupte d in
transmission position 005C. Inthis case, shift the
automatic transmission totransmission position
005D before switching off the engine when theve hi‐
cle is stationar y.Obser vethe messages on the
multifunction displa y.App lythe parking brake to
pr eve nttheve hicle from rolling away.
Yo u use the DIRECT SELECT le verto switch the
transmission position. The cur rent transmission
position appears in the multifunction display
(/ page 182). 005D
Park position
005E Reversege ar
005C Neut ral
005B Drive position 14 2
Driving and pa rking

R
The ignition is switched off.
R The front left-hand door is open.
% Do not
get ba ckinto theve hicle during the
re fuelling process. Otherwise, electros tatic
ch arge could build up again.
Obser vethe no tes on operating fluids
(/ page 269). #
Open fuel filler flap 1. #
Turn fuel filler cap 2anti-clockwise and
re mo veit. #
Close all vehicle doors topreve nt fuel
va pours from entering theve hicle interior. #
Comple tely slide thefiller neck of the pump
nozzle into theta nk, hook in place and refuel. #
Fillthe fuel tank only until the pump nozzle
switches off. #
Replace fuel filler cap 2and turn it clock‐
wise.
Yo u will hear a click when the fuel filler cap is
closed full y. #
Open the front left-hand door. #
Close fuel filler flap 1.
% Ve
hicles with a diesel engine and incor‐
re ct fuelling pr otector against refuelling
with petrol: thefiller neck is designed for
re fuelling at diesel filling pumps for
passenger vehicles.
% Ve
hicles with a diesel engine without an
incor rect fuelling pr otector: refuelling pre‐
fe rred at diesel filling pumps for passenger
ve hicles. Ho wever,yo u can also refuel at a
diesel filling pump for lor ries.
% If
th e fuel tank has been run comple tely dr y,
to p up with at least 5 l of fuel. Before starting th
e engine again: switch on the ignition three
or four times.
% Ve
hicles that can use a mixture of fuels can
be recognised bythest icke r "Ethanol up to
E85!" on the fuel filler flap. Ad
Blue ® Note
s onAdBlue ®
Ad Blue ®
is a wate r-soluble fluid forth eex haust
ga s af tertre atment of diesel engines. In order for
th eex haust gas af tertre atment tofunction prop‐
er ly, only use AdBlue ®
in accordance with
ISO 222 41 .
Ad Blue ®
has thefo llowing properties:
R non-t oxic
R colourless and odourless
R non-flammable
If yo u open theAd Blue ®
tank, small amounts of
ammonia vapour may be released. Fill the
Ad Blue ®
tank only in well-ventilated areas.
Do not let AdBlue ®
come into contact wi thskin,
ey es or clo thes. Keep AdBlue ®
aw ay from chil‐
dren.
Do not ingest AdBlue ®
. If AdBlue ®
is swallo wed,
immediately rinse your mouth out thoroughly.
Drink plenty of water.Seek medical attention at
once.
Obser vethe no tes on the operating fluid AdBlue ®
(/ page 272).
Ad Blue ®
av ailability:
R AdBlue ®
can be topped up at a qualified spe‐
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
R AdBlue ®
is available at numerous filling sta‐
tions via AdBlue ®
filling pumps.
R Alternatively, AdBlue ®
is available at qualified
specialist workshops, e.g. a Mercedes-Benz
Service Centre, and at numerous filling sta‐
tions as an AdBlue ®
re fill canis ter or AdBlue ®
re fill bottle.
% Ensure
the connection between there fill con‐
ta iner and vehicle filler neck does not drip. 14 8
Driving and pa rking

Calling up
theAd Blue ®
ra nge and AdBlue ®
fill
le ve l display
On-board computer:
4 Service 5
AdBlue
Ad Blue ®
freezes at a temp erature of appr ox‐
imately -11 °C. The vehicle is equipped with an
Ad Blue ®
preheating sy stem at thefa ctor y.This
means that winter operation is also ensured for
te mp eratures below -11 °C. If youto p up AdBlue ®
at temp eratures below -11 °C, theAd Blue ®
level
in the instrument clus ter may not be displa yed
cor rectl y.Ifth eAd Blue ®
is frozen, drive for at
least 20 minutes and then park theve hicle for a
minimum of 30 seconds, so that the le vel is cor‐
re ctly displa yed. In extreme winter conditions,
th e time needed todetect the amount topped up
may be considerably longer. Park theve hicle in a
wa rm garage tospeed up this process. #
Call up the menu.
The multifunction display will show the
Ad Blue ®
leve l.
To pping up AdBlue ®
* NOTEEngine damage due toAd Blue ®
being in the fuel #
AdBlue ®
must not be used tofill th e fuel
ta nk. #
Only use AdBlue ®
to fill th eAd Blue ®
ta nk. #
Do not overfill theAd Blue ®
tank. *
NO
TEContamination of theve hicle inte‐
ri or due toAd Blue ®
lea kage #
Afterto pping up, carefully close the
Ad Blue ®
re fill conta iner. #
Avoid car rying AdBlue ®
re fill conta iners
permanently in theve hicle. *
NOTEOver filling theAd Blue ®
tank due to
th eve hicle standing at an angle The
AdBlue ®
tank can only be filled as inten‐
ded when theve hicle is par ked on a le vel sur‐
fa ce. This way,va riations in thefilling amount
are avoided.
When filling there ser voir when theve hicle is
st anding at an angle, there is a risk of overfill‐
ing. This may damage exhaust gas af tertre at‐
ment components. #
Park theve hicle on a le vel sur face tofill
th eAd Blue ®
tank. Re
quirements
R The auxiliary heating is switched off.
R The ignition is switched off.
R The front left-hand door is open.
The following messages that appear in succes‐
sion in the multifunction display indicate that you
need torefill th eAd Blue ®
tank:
R Refill AdBlue See Owner's Manual
The AdBlue ®
tank has dropped tothere ser ve
le ve l.
R Refill AdBlue Emer. oper. in XXX km See Own-
er's Manual
The low AdBlue ®
leve l will result in limited
per form ance af terth ere maining dis tance dis‐
pl ay ed has been driven. Top up AdBlue ®
as
qu ickly as possible.
R Emergency operation: 20 km/h No start in
XXX km See Operating Instructions
The vehicle speed is limited toappr oximately
20 km/h. You will on lybe able todrive the
ve hicle the dis tance shown. Subsequently, it
will no longer be possible tostart the engine.
R Refill AdBlue Engine start not possible
The vehicle can no longer be star ted.
Yo u can also ha vetheAd Blue ®
fill le vel and the
Ad Blue ®
ra nge displ ayed (/ page149).
Opening theAd Blue ®
filler cap #
Open the front door on the left-hand side and
fo ld out filler flap 1. #
Close all vehicle doors topreve nt ammonia
va pours from entering theve hicle interior. #
Turn blue AdBlue ®
filler cap 2anti-clockwise
and remo veit.
Fu elfiller cap 3forth e fuel remains closed. Driving and parking
14 9