2017 MERCEDES-BENZ E-CLASS CABRIOLET lock

#
Pull the ball neck in the direction of the
ar row until it en gage s audibly in a vertical
position.
Indicator lamp 1inthe ball neck release
switch goes out.
If th e ball neck is not securely loc ked in
place, theCheck trailer hitch lock display
message appears in the multifunction dis‐
pla y. #
Remo vethe co ver from the ball head and
st ore it in a safe place.
Make sure that the ball of the ball neck is clean.
Check that it is either greased or dr y (grease
free), depending on the instructions forthe
traile r.
Fo lding the ball neck in wards #
Pull release switch 2until the ball neck
unloc ks.
The ball neck folds up under there ar
bumper.
Indicator lamp 1flashes. #
Press the ball neck in the direction of the
ar row until it en gage s audibly behind the
bumper.
Indicator lamp 1goes out and the message
in the multifunction display disappears.
Obser vethe information on the displa ysinthe
instrument clus ter:
R Warning and indicator lamps (→ page 463)
R Display messages (→ page419) Cou
pling up/uncoupling a trailer &
WARNING Risk of inju ryfrom theve hicle
le ve l being changed
Ve hicles with le vel control sy stem: the
ve hicle le vel may be changed unin tentional ly,
e.g. by ot her persons. You may become trap‐
ped if you couple up or uncouple a trailer
while theve hicle le vel is changing. In addi‐
tion, other people could become trapped if
th eir limbs are between theve hicle body and
th e tyres or underneath theve hicle.
When coupling up or uncoupling a trailer,
make sure that: #
The doors or tailgate are not opened or
closed. #
Do not initiate the le vel control sy stem
and do not operate theDY NA MIC
SELECT switch. #
The vehicle is not loc ked or unloc ked. Re
quirements:
R The ball neck must be fully extended and
engaged in the securely loc ked position. 220
Driving and parking

Tr
ailers with a 7-pin plug can be connec tedto
th eve hicle with thefo llowing adap ters:
R adap ter plug
R adapt er cable
The trailer will only be cor rectly de tected bythe
ve hicle if thefo llowing conditions are me t:
R the trailer is connected cor rectl y.
R the trailer lighting sy stem is in working order.
The operation of thefo llowing sy stems depends
on the trailer being connected cor rectly:
R Active Lane Keeping Assist
R ESP ®
R Parking Assist PARKTRONIC
R Parking Pilot
R Blind Spot Assist or Active Blind Spot Assi stCoupling up a trailer
* NO
TEDama getothe battery due tofull
dischar ge Charging
the trailer battery using the po wer
supply of the trailer can damage the batter y. #
Do not use the po wer supp lyto charge
th e trailer batter y. #
Remo vethe co ver from the ball head and
st ore it in a safe place (→ page102). #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. #
Open the soc ket co ver. #
Insert the plug connector with lug 1into
groo ve3 onthe soc ket. #
Turn bayonet coupling 2clockwise tothe
st op. #
Let the co ver engage. #
Secure the cable tothe trailer with cable ties
(if you are using an adap ter cable). #
Make sure that cable is alw ays slack for ease
of mo vement when cornering. #
Push the combination switch upwards and
down wards and check whe ther the cor re‐
sponding turn signal light on the trailer is
fl ashing.
A display message may appear in the multifunc‐
tion display even if the trailer has been connec‐
te d cor rectly:
R LEDs ha vebeen ins talled on the trailer light‐
ing sy stem
R the cur rent has fallen below the trailer light‐
ing sy stem's minimum cur rent (50 mA) Driving and pa
rking 221

#
Select Generate security key .
A connection will be es tablished with the
newly crea ted security key. #
Tosave a security key:select Save.
When a new security key is sa ved, all existing
Wi -Fi connections are then disconnected. If
th eWi -Fi connections are being re-es tab‐
lished, the new security key must be en tere d. Au
thorising a COMAND Touch device Re
quirements:
R The COMAND Touch App is ins talled on the
ex tern al device (e.g. tablet) which is tobe
used as a Rear Seat En tertainment Sy stem
unit.
R Wi-Fi is acti vated (→ page 260) and the mul‐
timedia sy stem is confi gured as a Wi-Fi Hot‐
spot (→ page 261).
Multimedia sy stem:
, System .
COMAND Touch
Connecting a new device #
Select Authorise a new device. #
Select Connect new device.
A security key is displa yed. #
Ente rth e security key in theex tern al device.
The Please start COMAND Touch on your
device and follow the instructions. The App
is available in the App Store. message
appears.
Selecting an already connected device #
Select Authorise a new device.
The devices already connec ted are displa yed. #
Select Continue using connected devices.
The Please start COMAND Touch on your
device and follow the instructions. The App
is available in the App Store. message
appears. Ac
tivating/deactivating the COMAND Touch
ch ild saf ety lock Multimedia sy
stem:
, System .
COMAND Touch
Child saf ety lock #
Switch Parental control onO or off ª.
The content displa yed on theex tern al device
can on lybe set on the multimedia sy stem. Sy
stem language Note
s onthe sy stem language
This function allo wsyouto determ ine the lan‐
guage forth e menu displa ysand the navigation
announcements. The selected language af fects
th ech aracters available for entr y.The navigation
announcements are not available in all lan‐
guages. If a language is not available, the naviga‐
tion announcements will be in Engl ish.
Setting the sy stem language
Multimedia sy stem:
, System .
Language #
Set the language. 262
Multimedia sy stem

R
Con firm thege neral term s and conditions.
R The o symbol indicates that a Mercedes-
Benz App can be used via voice control. #
Call up the Mercedes-Benz App
(→ page 315).
The basic me nuforth e App is displa yed. #
Touse voice control: select oLanguage. #
Say your question or command.
% Voice control is not available in all countries
and languages. We
b br owser Calling up a
website
Multimedia sy stem:
, Con-
nect .
z Browser .
z Enter URL #
Ente ring a web address #
Tofinish entry and call up a website:
select ¬.
% Websites cann otbe shown while theve hicle
is in motion. Overview of
thewe b br ows er 1
URL ent ry
2 Web page, back
3 Web page, forw ards
4 Torefresh/s top
5 Options
6 Toclose the br owser Calling up
thewe b br owser options
Multimedia sy stem:
, Con-
nect .
z Browser .
Z Options
The following functions are available:
R Bookmarks
R Zoom
R Browser settings
R Delete browser data #
Select an option. #
Chan gethe settings.
Calling up thewe b br owser settings
Multimedia sy stem:
, Con-
nect .
z Browser .
Z Options .
Bro
wser settings
The following functions are available:
R Block popups
R Enable Javascript
R Enable cookies 316
Multimedia sy stem

Opening/closing
the bonnet &
WARNING Risk of accident due todriv‐
ing with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up
when theve hicle is in motion and block your
vie w. #
Never unlock the engine bonn etwhen
driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the engine
bonn et
When opening or closing the engine bonn et,
it may suddenly drop into the end position.
There is a risk of injury for an yone in the
engine bonn et's range of mo vement. #
Only open or close the engine bonn et
when there are no persons in the
engine bonn et's range of mo vement. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING Risk of inju rydue tomoving
parts
Cer tain components in the engine compart‐
ment may continue tomo veor suddenly
mo veagain even af terth e ignition has been
switched off, e.g. the cooler fan.
Ma kesure of thefo llowing before per form ing
ta sks in the engine compartmen t: #
Switch the ignition off. #
Neverto uch the danger zone sur round‐
ing moving co mponent parts, e.g. the
ro tation area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of inju ryfrom touching
co mp onent parts under voltage
The ignition sy stem and the fuel injection
sy stem workunder high voltage. If youto uch
co mp onent parts which are under voltage,
yo u could recei vean electric shoc k. #
Neverto uch co mponents of the ignition
sy stem or the fuel injection sy stem
when the ignition is switched on. &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine, Maintenance and care
347

#
Follow the instructions in the service
inter val display rega rding the oil
ch ange. *
NO
TEDama gecaused bytopping up too
much engine oil To
pping up too much engine oil can cause
damage tothe engine or the catalytic con‐
ve rter. #
Have excess engine oil remo ved at a
qu alified specialist workshop. #
Turn cap 1anti-clockwise and remo veit. #
Top up the engine oil. #
Replace cap 1and turn it clockwise as far
as it will go. #
Check the oil le vel again (→ page 349). Checking
the coolant le vel &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine,
th era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: &
WARNING Danger of bu rns from hot
coolant
The engine cooling sy stem is pressurised,
particularly when the engine is warm. If you
open the cap, you could be scalded byhot
coolant spr aying out. #
Let the mo tor cool down before opening
th e cap. #
When opening the cap, wearglove s and
pr otective eyew ear. Maintenance and care
351

#
Slowly turn the cap half a turn toallow
pressure toescape. #
Park theve hicle on a flat sur face. #
Check the coolant temp erature display in the
instrument clus ter.
The coolant temp erature must be below
70 °C. #
Slowly turn cap 1anti-clockwise torelie ve
ov erpressure. #
Continue turning cap 1anti-clockwise and
re mo veit.
The coolant le vel is cor rect:
R Ifth e engine is cold, up tomar ker bar 2
R Ifth e engine is warm, up to1.5 cm over
mar ker bar 2 #
If necessar y,top up with coolant that has
been appr ovedby Mercedes-Benz.
R Further information on coolant (→ page414) To
pping up the windsc reen washer sy stem &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine,
th era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen 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. 352
Maintenance and care

#
Drive tothe nearest qualified specialist work‐
shop and ha vethe tyre, tyre sealant bottle
and filling hose replaced there. Batte
ry(vehicle) Note
s onthe12 V battery &
WARNING Risk of an accident due to
wo rkcar ried out incor rectly on the bat‐
te ry
Wo rkcar ried out incor rectly on the battery
can, forex ample, lead toa short circuit. This
can lead tofunction restrictions in saf ety-re l‐
eva nt sy stems, e.g. the lighting sy stem, ABS
(anti-lock braking sy stem) or ESP ®
(Elec‐
tronic Stability Prog ram). The operating
saf ety of your vehicle may be restricted.
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
R when braking
R intheeve nt of ab rupt steering manoeu‐
vres and/or when theve hicle's speed is
not adap tedto thero ad conditions #
Intheeve nt of a sho rtcircuit or a simi‐
lar incident, contact a qualified special‐
ist workshop immediately. #
Do not continue driving. #
Alw ays ha vewo rkon the battery car ried
out at a qualified specialist workshop. R
Further information on ABS (→ page167)
R Further information on ESP ®
(→ page 168)
Fo r saf etyre asons, Mercedes-Benz recommends
th at you on lyuse bat teries which ha vebeen tes‐
te d and appr oved foryo ur vehicle byMercedes-
Benz. These batteries pr ovide inc reased impact
pr otection toprev ent vehicle occupants from
suf fering acid bu rns should the battery be dam‐
aged in theev ent of an accident. All
vehicles except vehicles with a lithium-
ion battery &
WARNING Risk ofexplosion due toelec‐
tros tatic charge
Electros tatic charge can cause spa rks which
may ignite the highly flammable gas mixture
in the batter y. #
Todischar geany electros tatic charge
th at may ha vebuilt up, touch the me tal
ve hicle body before handling the bat‐
te ry. The highly
flammable gas mixture is created
while the battery is charging and during starting
assis tance. &
WARNING Danger of chemical burns
from the battery acid
Battery acid is caustic. #
Avoid contact with the skin, eyes or
clo thing. #
Do not lean overth e batter y. Breakdown assis
tance 371