2016 MERCEDES-BENZ GLC COUPE Owners Manual

Coupling up a trailer
X Apply the electric parking brake manually.
X Shift the transmission to position P.
X Position the trailer on a level surface behind
the vehicle.
X Couple up the trailer.
X Establish the electrical connection between
the vehicle and the trailer.
X Check that the trailer lighting system is work-
ing.
X Push the combination switch upwards and
downwards and check whether the corre-
sponding turn signal indicator on the trailer is
flashing.
A connected trailer is only detected when the
electrical connection is established correctly
and the lighting system is working properly. The
function of other systems also depends on this, for example:
R ESP ®
R PARKTRONIC
R Active Parking Assist
R Active Blind Spot Assist
R Active Lane Keeping Assist Uncoupling a trailer
G
WARNING
If you uncouple a trailer with an engaged over- run brake, you could trap your hand between
the vehicle and the trailer drawbar. This poses a risk of injury.
Do not uncouple a trailer with an engaged
overrun brake. G
WARNING
Vehicles with level control:
If you disconnect the trailer cable, the vehicle is lowered. This can cause you or others to
become trapped between the vehicle body
and tyres, or underneath the vehicle. This
poses a risk of injury.
Make sure that no-one is in the immediate
vicinity of the wheel arch or underneath the
vehicle when disconnecting the trailer cable. !
Do not disconnect a trailer with an engaged
overrun brake. Otherwise, your vehicle could
be damaged by the rebounding of the overrun
brake.
! Remove the adapter cable before folding in
the ball coupling. You could otherwise dam-
age the rear bumper and the adapter cable.
X Apply the electric parking brake manually.
X Shift the transmission to position P.
X Switch off the engine.
X Secure the vehicle and trailer against rolling
away.
X Remove the trailer cable and uncouple the
trailer. Trailer power supply
! Accessories with a maximum power con-
sumption of 180 W can be connected to the
permanent power supply.
The trailer battery may not be charged from
the power supply.
When it leaves the factory, your vehicle's trailer
socket is equipped with a permanent power
supply and a power supply that is switched on
via the ignition lock.
The permanent power supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin 10.
The trailer's permanent power supply is
switched off in the event of low on-board voltage
and after six hours at the latest.
You can find more information about installing
the trailer electrics at a qualified specialist work- shop.
To activate the switched power supply:
X Turn the key to position 2in the ignition lock
(Y page 144).
or
X Press the Start/Stop button twice on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 144).222
Towing a trailerDriving and parking

To deactivate the switched power supply:
X Turn the key to position 0in the ignition lock
(Y page 144).
or
X Press the Start/Stop button once on vehicles
with KEYLESS-GO or the KEYLESS-GO start
function (Y page 144). Failure check for LEDs
If LED lamps are fitted in the trailer, a malfunc-
tion message may appear in the multifunction
display even if there is no fault. The reason for
the error message may be that the current has
fallen below the minimum of 50 mA.
To ensure reliable operation of the failure indi-
cator, each LED chain in the trailer lighting must
be guaranteed a minimum current of 50 mA. Trailer with 7-pin connector
General notes Trailer with 7-pin connector:
you can connect
to the 13-pin socket on the ball coupling using
an adapter or, if necessary, an adapter cable.
Both can be obtained at a qualified specialist
workshop. Fitting the adapter !
Make sure that there is sufficient cable play
so that the cable cannot become detached
when cornering.
! Remove the adapter cable before folding in
the ball coupling. You could otherwise dam-
age the rear bumper and the adapter cable. X
Open the socket cover.
X Insert the connector with lug :into groove
= on the socket.
X Turn bayonet connection ;clockwise to the
stop.
X Let the cover engage.
X If you are using an adapter cable, secure the
cable to the trailer with cable ties. Towing a trailer
223Driving and parking Z

Problems with trailer towing
Problem
Possible causes/consequences and
M
MSolutions The ball coupling has
been swivelled in but
does not reach the
securely locked position. R
The indicator lamp in the switch flashes.
R The Trailer coupling Check lock Trailer coupling Check lock message appears on the
multifunction display.
X Initiate a new swivelling procedure.
If the ball coupling does not reach the securely locked position as a
result: X Start the engine.
or
X Pull and hold the switch during the whole swivelling procedure.
If the unlocked ball coupling does not reach the securely locked posi- tion even after several attempts:
X Make sure that there is sufficient ground clearance before continu-
ing the journey.
X Consult a qualified specialist workshop.
As long as the message Trailer Trailercoupling
coupling Check
Checklock
lockis shown on
the multifunction display, no trailer should be attached. Unlocking using the
switch on the tailgate:
The ball coupling does
not swivel out even
though:
R the vehicle is station-
ary
R no trailer cable is con-
nected
R the switch was briefly
pulled The on-board voltage is too low.
X Start the engine.
If the ball coupling still does not unlock:
X Consult a qualified specialist workshop. 224
Towing a trailerDriving and parking

Problem
Possible causes/consequences and
M
MSolutions Unlocking using the
switch on the driver's
door:
The ball coupling does
not swivel out even
though:
R the vehicle is station-
ary
R no trailer cable is con-
nected The on-board voltage is too low.
X Engage parking position P.
X Switch on the power supply.
or X Start the engine.
If the ball coupling still does not unlock: X Consult a qualified specialist workshop. The ball coupling does
not swivel out or in. The
indicator lamp in the
switch is flashing perma-
nently. The Trailer Trailer
coupling Check lock
coupling Check lock
message appears on the
multifunction display. There is a malfunction in the release electronics.
X When the ball coupling is swivelled in: pull and hold the switch
on the tailgate until the ball coupling vertically engages in a securely locked position and then engages again under the bumper.
X When the ball coupling is swivelled out: pull and hold the switch
on the tailgate until the ball coupling engages under the bumper.
If the ball coupling still does not unlock: X Consult a qualified specialist workshop. Bicycle rack
General notes
Trailer tow hitch (example with additional
guide pin)
Depending on the bicycle rack's design, you can transport up to four bicycles on it:
R When attached by clamping onto the ball cou-
pling :, the maximum payload is 75 kg. You
can transport up to three bicycles.
R When attached to the ball coupling :and
also the guide pin ;, the maximum payload is
100 kg. You can transport up to four bicycles.
The payload is calculated from the weight of the
bicycle rack and the load of the bicycle rack. To transport bicycles with a total weight
between 75 kg and 100 kg, use only bicycle
racks with additional support on the guide
pin
;. Important safety notes
G
WARNING
The bicycle rack can detach from the vehicle if
you
R exceed the permissible payload of the
trailer tow hitch
R use the bicycle rack incorrectly
R attach the bicycle rack to the ball coupling
beneath the ball head
There is a risk of an accident.
For your safety and that of other road users,
observe the following:
R Always observe the permissible payload of
the trailer tow hitch.
R Use the bicycle rack only to transport bicy-
cles. Bicycle rack
225Driving and parking
Z

R
Always attach the bicycle rack correctly by
clamping onto the ball head and, if possible,
to the guide pin on the ball coupling as well.
R To transport four bicycles, always use bicy-
cle racks with additional support on the ball
coupling's guide pin.
R Use only bicycle racks approved by
Mercedes-Benz.
R Always comply with the bicycle rack's oper-
ating manual.
! Using unsuitable bicycle racks or using
them incorrectly can cause damage to and
fractures in the trailer tow hitch.
Use only bicycle racks approved by
Mercedes-Benz. Bicycle racks cause your vehicle's driving char-
acteristics to change. The vehicle
R is heavier
R is restricted in its acceleration and gradient-
climbing capability
R has an increased braking distance
This can impair the vehicle's handling charac-
teristics. Adapt your driving style accordingly.
Maintain a safe distance and drive carefully.
When using bicycle racks, set the tyre pressure on the rear axle of the vehicle for the maximum
load. Further information on tyre pressure can
be found on the tyre pressure table
(Y page 359). Loading instructions
The greater the distance between the load's centre of gravity and the ball head, the higher the load exerted on the trailer tow hitch.
Therefore, observe the following notes:
R Attach heavy bicycles as close as possible to the vehicle.
R Always distribute the load on the bicycle rack as symmetrically as possible to the vehicle longi-
tudinal axis.
Before loading the bicycle rack, Mercedes-Benz advises you to remove all add-on parts from the
bicycles, e.g. bicycle baskets, child seats or batteries. This will allow you to improve the aerody-
namic resistance and the bicycle rack's centre of gravity.
Always secure bicycles against slipping and check that they are firmly seated at regular intervals.
Do not use tarpaulins or other covers. This could impair the driving characteristics and rear visibility. The aerodynamic resistance would also rise, and so would the load exerted on the trailer tow hitchas a result. 226
Bicycle rackDriving an
d parking

Load distribution on the bicycle rack
: Height between the centre of gravity and the ball coupling
; Distance to the rear between the centre of gravity and the ball coupling
= Centre of gravity is located on the central axis of the vehicle
When loading the bicycle rack, comply with the following notes: Number of bicycles Total weight of bicy-
cle rack and load Max. distance
:
: Max. distance
;
; 3 up to 75 kg 420 mm 300 mm
4
5 up to 100 kg
5 420 mm 400 mm
5
When transporting four bicycles or a total weight between 75 kg and 100 kg, use only bicycle racks with
additional support on the guide pin of the trailer tow hitch. Bicycle rack
227Driving and parking Z

Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions relevant to safety. The operating
safety of your vehicle may be impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
If the operating safety of your vehicle is
impaired, park the vehicle safely as soon as pos- sible. Contact a qualified specialist workshop.
The on-board computer shows only messages or warnings from certain systems on the multi-
function display. You should therefore make
sure your vehicle is operating safely at all times.
For an overview, see the instrument cluster illus-
tration (Y page 34).
HYBRID vehicles: make sure that you read the
separate Owner's Manual. Otherwise, you may
fail to recognise dangers. Displays and operation
Instrument cluster lighting
The lighting on the instrument cluster, on the
displays and the controls in the vehicle interior
can be adjusted using brightness control
knob :.
X Turn brightness control knob :up or down.
If you turn the light switch (Y page 115) to the
T, ÃorL position, the brightness
will depend upon the brightness of the ambi-
ent light.
i The light sensor on the instrument cluster
automatically controls the brightness of the
multifunction display.
In daylight, the displays on the instrument
cluster are lit. A dimming function is not pos-
sible in daylight. Speedometer with segments
The speedometer is divided into segments
depending on the vehicle's equipment.
The segments in the speedometer indicate
which speed range is available.
R Cruise control enabled (Y page 174):
The segments light up from the stored speed to the end of the scale or to a permanently set
speed limitation.
R Variable SPEEDTRONIC enabled
(Y page 176):
The segments light up from the start of the
scale to the selected speed limitation.
R DISTRONIC PLUS enabled (Y page 178):
One or two segments in the stored speed
range light up.
R DISTRONIC PLUS detects a vehicle in front
moving more slowly than the stored speed: 228
Displays and operationOn-board computer and displays

The segments between the speed of the vehi-
cle in front and the stored speed light up. Rev counter
! Do not drive in the overrevving range. Doing
so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the measured air temperature
and not the road surface temperature.
The outside temperature display is in the multi-
function display (Y page 230).
Changes in the outside temperature are dis-
played after a short delay. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature gauge is in the lower
section of the rev counter (Y page 34).
At high outside temperatures and when driving
in mountainous terrain, the coolant temperature
may rise to the end of the scale.
Under normal operating conditions and with the correct coolant level, the coolant temperature
may rise to 120 †. Operating the on-board computer
:
Multifunction display
; Right control panel
= Left control panel
X To activate the on-board computer: switch
on the power supply.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel.
Left control panel ò R
Opens the menu list 9
: Press briefly:
R Scrolls through lists
R Selects a menu or function
R In the Radio Radio orMedia
Media menu:
opens the track or station list and
selects a station, an audio track or a video scene
R In the Telephone Telephone menu: switches
to the phone book and selects a
name or a telephone number 9
: Press and hold:
R
Scrolls quickly through all lists
R In the Radio Radio orMedia
Media menu:
selects a station, audio track or
video scene using rapid scrolling
R In the Telephone Telephone menu: starts
rapid scrolling if the phone book is open Displays and operation
229On-board computer and displays Z