2013 MERCEDES-BENZ GL-Class Owner's Manual

Permissible trailer loads and drawbar
loads
Weight specifications Maximump
ermissible gross vehicle
weight rating
The gross trailer weight is calculated by
adding the weight of the trailer to the weight
of the load and equipment on the trailer.
Permissible gross weight :7,500 lb
(3,402 kg).
Permissible noseweight
The maximum permissible trailer drawbar
noseweight is the maximum weight with
which the trailer drawbar can be loaded:
600 lbs (272 kg).
Limit for Mercedes-Benz-approved trailer
couplings.
Loading atrailer R
When loading the trailer, make sure that
neithe rthe permissible gross weight of the
trailer nor the gross vehicle weight is
exceeded. The permissible gross vehicle
weight is indicated on the identification
plate on the B-pillar on the driver's side of
the vehicle.
You can find the maximum permissible
values on the type plates of your vehicle
and the trailer. When calculating how much
weight the vehicle and trailer may carry,
pay attention to the respective lowest
values.
R The trailer drawbarl oad on the ball coupling
must be added to the rear axle load to avoid
exceeding the permissible gross axle
weight. The permissible gross vehicle
weight is indicated on the identification
plate on the B-pillar on the driver's side of
the vehicle.
i Mercedes-Benz recommends atrailer
load where the trailer drawbar noseweight
accounts for 8% to 15% of the trailer's
permissible gross weight. i
The weight of additional accessories,
passengers, and cargo reduces the
permissible trailer load and drawbar load
for yourv ehicle.
Checking the vehicle and trailer weight R
To chec kthat the weights of the towing
vehicle and the trailer comply with the
maximum permissible values, have the
vehicle/trailer combination (including the
driver, passengers, and cargo with a fully
laden trailer) weighed on a calibrated
weighbridge.
R Check the gross axle weight rating of the
front and rear axles, the gross weight of the
trailer and trailer drawbarl oad. Removing the ball coupling
X Remove the spring cotter.
X Remove the bolt from the ball coupling
recess.
X Remove the ball coupling from the ball
coupling recess.
X Clean the ball coupling if it is dirty.
Information on cleaning and care of the trailer
tow hitch can be found at (Y page 376). Storing the ball coupling
G
WARNING
Do not carry the ball coupling in the vehicle
interior if it is not secured.
Otherwise, you and others could be injured by
the ball coupling being thrown around if you:
R brake sharply
R change direction suddenly
R are involved in an accident Towing
atrailer
263Driving an d parking Z

Trailer power supply
! You can connect accessorie swith a
maximum power consumption of 240 Wto
the permanent powe rsupply.
You must no tcharge a trailer battery using
the power supply.
The trailer socket of your vehicle is equipped
at the factory with apermanen tpower supply.
The permanent power supply is supplied via
trailer socket pin 4.
The trailer's permanent power supply is
switched off in the event of low vehicle supply
voltage and after six hours at the latest.
Aq ualified specialist workshop can provide
more information about installing the trailer
electrics. 264
Towing
atrailerDriving an d parking

Useful information
............................266
Important safety notes ....................266
Displays and operation ....................267
Menus and submenus ......................270
Display messages ............................. 286
Warning and indicator lamps in the
instrument cluster ............................320 265On-board computer and displays

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 28).Important safety notes
G
WARNING
If you operate information systems and
communication equipment integrated in the
vehicle while driving, you will be distracted
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate the equipment when the traffic
situatio npermits .Ifyou are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the
equipment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or
malfunctioned, you may not recognize
function restrictions in systems 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
immediately.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the multifunction display
.You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y page 33).266
Important safety notesOn-board computer and displays

Displays and operation
Instrument cluster
Instrument cluster: miles
0002
Speedometer with segments (Y page 268)
0003 Fuel gauge
0021 Tachometer (Y page 268)
0020 Coolant temperature ( Ypage 267)
001E Multifunction display (Y page 269)
001F Instrumen tcluster lighting (Y page 267) Instrument cluster lighting
The lighting in the instrumen tcluster, in the
displays and the controls in the vehicle
interior can be adjusted using the brightness
control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Y page 33).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to 0006,0016or
000D, the brightness is dependent upon
the brightness of the ambien tlight.
i The light sensor in the instrumen tcluster
automatically controls the brightness of
the multifunction display. In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away fro mthe engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the Displays and operation
267On-board computer and displays
Z

vehicle and do not stand near the vehicle until
the engine has cooled down.
! Adisplay message is shown if the coolant
temperature is too high.
If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolan ttemperature gauge is in the
instrument cluster on the right-hand side
(Y page 33).
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protec tthe
engine when the red band is reached. Outside temperature display
You should pay special attention to road
conditions when temperatures are around
freezing point.
The outside temperature display is in the
multifunction display (Y page 269).
Changes in the outside temperature are
displayed after a short delay. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 195):
The segments light up from the stored
speed to the maximum speed.
R DISTRONIC PLUS activated (Y page 198):One or two segments in the set speed
range light up.
R DISTRONIC PLUS detectsav ehicle in front:
The segments between the speed of the
vehicle in fron tand the stored speed light
up. Operating the on-board computer
Overview 0002
Multifunctio ndisplay
0003 Switches on the Voice Control System;
see the separate operating instructions
0021 Right control panel
0020 Left control panel
001E Back button
X To activat ethe on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. 268
Displays and operationOn-board computer and displays

Left control panel
0002
0005 R
Calls up the menu and menu bar 0003
0004
Press briefly:
R
Scrolls in lists
R Selects a submenu or function
R In the Audio menu: selects a
stored station, an audio track or
a video scene
R In the Tel (telephone) menu:
switches to the phone book and
selects a name or telephone
number 0003
0004
Press and hold:
R
In the Audio menu: selects the
previous/nex tstation or selects
an audio track or a video scene
using rapid scrolling
R In the Tel (Telephone) menu:
starts rapid scrolling if the phone
book is open 000B R
Confirms a selection/display
message
R In the Tel (telephone) menu:
switches to the telephone book
and starts dialing the selected
number
R In the Audio menu: stops the
station search function at the
desired station Right control panel
000D R
Rejects or ends a call
R Exits phone book/redial
memory 0004 R
Makes or accepts a call
R Switches to the redial memory 0009
000A R
Adjusts the volume 0006 R
Mute Back button
0007
Press briefly:
R Back
R Switches off the Voice Control
System; see the separate
operating instructions
R Hides display messages/calls
up the last Trip menu function
used
R Exits the telephone book/redial
memory 0007
Press and hold:
R Calls up the standard display in
the Trip menu
Multifunction display
0002
Time
0003 Permanent display: outside temperature
or speed (Y page 278)
0021 Text field
0020 Menu bar Displays and operation
269On-boardcompu ter and displays Z

001E
Drive program (Y page 169)
001F Transmission positio n(Ypage 169)
X To show menu bar 0020:press the 0002
or 0005 button on the steering wheel.
Menu bar 0020disappears after a few seconds.
Text field 0021shows the selected menu or
submenu as well as display messages.
i You can set the time using the audio
system or COMAND; see the separate
operating instructions.
The following messages may appear in the
multifunction display:
00090011000A Active Parking Assist
(Ypage 221)
CRUISE Cruise control (Y
page 195)
000BDSR DSR (Y
page 250)
0006 Off-road program (vehicles
without the ON&OFFROAD
package) (Y page 252)
0006 Off-road program (vehicles with
the ON&OFFROA Dpackage)
(Y page 252)
LOW RANGE LOW RANGE off-road gear
(Y
page 254)
0005 Adaptive Highbeam Assist
(Ypage 130)
0003 ATTENTION ASSIST
(Ypage 234)
0001 Lane Keeping Assist
(Ypage 239)
0001 Active Lane Keeping Assist
(Ypage 245)
0001 HOLD function (Y page 211)
0003 Distance warning function
(Ypage 68)
0003 PRE-SAFE®
Brake (Y page 73) Menus and submenus
Menu overview
Press the 0002or0005 button on the
steering wheel to call up the menu bar and
selec tamenu.
Operating the on-board computer
(Y page 268).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip menu (Y
page 270)
R Navi menu (navigatio
ninstructions)
(Y page 272)
R Audio menu (Y
page 273)
R Tel menu (telephone) (Y
page 274)
R DriveAssist menu (assistance)
(Y page 276)
R Service menu (Y
page 277)
R Settings menu (settings) (Y
page 278)
R ON&OFFROAD menu (Y
page 282)
R AMG menu in AMG vehicles (Y
page 282) Trip menu
Standard display X
Press and hold the 0007button on the
steering wheel until the Trip menu with
trip odometer 0002and odometer 0003is
shown. 270
Menus and submenusOn-board computer and displays