MERCEDES-BENZ GL-Class 2014 X166 Owner's Manual

Permissible trailer loads and drawbar
loads
Weight specifications Maximum permissible 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.
You will find installing dimensions and loads
under "Technical data" (Y page 456).
Permissible noseweight
You will find installing dimensions and loads
under "Technical data" (Y page 456).
Loading a trailer R
When loading the trailer, make sure that
neither the 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 drawbar load 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 a trailer
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 your vehicle. Checking the vehicle and trailer weight R
To check that 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 drawbar load. 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.
X Stow the ball coupling so that it cannot be
thrown around.
Observe the loading guidelines
(Y page 340) and the safety notes regarding
stowage spaces (Y page 341).
Information on cleaning and care of the trailer
tow hitch can be found at (Y page 381). 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 a trailer
269Driving and parking Z

Trailer power supply
! You can connect accessories with a
maximum power consumption of 240 Wto
the permanent power supply.
You must not charge a trailer battery using
the power supply.
The trailer socket of your vehicle is equipped
at the factory with a permanent power 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.
A qualified specialist workshop can provide
more information about installing the trailer
electrics. 270
Towing a trailerDriving an
d parking

Useful information
............................272
Important safety notes ....................272
Displays and operation ....................272
Menus and submenus ......................275
Display messages ............................. 290
Warning and indicator lamps in the
instrument cluster ............................324 271On-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
situation permits. If you 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). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, 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 Ã,Tor
L, the brightness is dependent upon
the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartment could expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! A display message is shown if the coolant
temperature is too high. 272
Displays and operationOn-board computer and displays

If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolant temperature 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 protect the
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 274).
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 201):
The segments light up from the stored
speed to the maximum speed.
R DISTRONIC PLUS activated (Y page 203):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light
up. Operating the on-board computer
Overview :
Multifunction display
; Switches on the Voice Control System;
see the separate operating instructions
= Right control panel
? Left control panel
A Back button
X To activate the 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. Displays and operation
273On-board computer and displays Z

Left control panel
=
; R
Calls up the menu and menu bar 9
:
Press briefly:
R
Scrolls in lists
R Selects a submenu or function
R In the Audio Audio menu: selects a
stored station, an audio track or
a video scene
R In the Tel Tel(telephone) menu:
switches to the phone book and
selects a name or telephone
number 9
:
Press and hold:
R
In the Audio Audio menu: selects the
previous/next station or selects
an audio track or a video scene
using rapid scrolling
R In the Tel Tel(Telephone) menu:
starts rapid scrolling if the phone
book is open a R
Confirms a selection/display
message
R In the Tel Tel(telephone) menu:
switches to the telephone book
and starts dialing the selected
number
R In the Audio Audio menu: stops the
station search function at the
desired station Right control panel
~ R
Rejects or ends a call
R Exits phone book/redial
memory 6 R
Makes or accepts a call
R Switches to the redial memory W
X R
Adjusts the volume 8 R
Mute Back button
%
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 Tripmenu function
used
R Exits the telephone book/redial
memory %
Press and hold:
R
Calls up the standard display in
the Trip Trip menu Multifunction display
:
Time
; Permanent display: outside temperature
or speed (Y page 283)
= Text field
? Menu bar 274
Displays and operationOn-board computer and displays

A
Drive program (Y page 173)
B Transmission position (Y page 173)
X To show menu bar ?:press the =
or ; button on the steering wheel.
Menu bar ?disappears after a few seconds.
Text field =shows 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:
XjY Active Parking Assist
(Y page 226)
CRUISE
CRUISE Cruise control (Y
page 201)
LOW LOW
RANGE RANGE LOW RANGE off-road gear
(Y
page 259)
_ Adaptive Highbeam Assist
(Ypage 134)
ë HOLD function ( Ypage 216) Menus and submenus
Menu overview
Press the =or; button on the
steering wheel to call up the menu bar and
select a menu.
Operating the on-board computer
(Y page 273).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip
Trip menu (Y page 275)
R Navi Navi menu (navigation instructions)
(Y page 277)
R Audio
Audio menu (Y page 278)
R Tel
Tel menu (telephone) (Y page 279)
R DriveAssist
DriveAssist menu (assistance)
(Y page 280)
R Serv
Serv menu (Y page 282)
R Sett
Sett menu (settings) (Y page 282) R
ON&OFFROAD
ON&OFFROAD menu (Ypage 286)
R AMG
AMG menu in AMG vehicles (Y page 287) Trip menu
Standard display X
Press and hold the %button on the
steering wheel until the Trip
Tripmenu with
trip odometer :and odometer ;is
shown.
Trip computer "From Start" or "From
Reset" Example: trip computer "From Start"
:
Distance
; Time
= Average speed
? Average fuel consumption
X Press the =or; button on the
steering wheel to select the Trip
Trip menu.
X Press 9or: to select From Start From Start
or From Reset
From Reset.
The values in the From Start
From Startsubmenu are
calculated from the start of a journey, while
the values in the From Reset From Resetsubmenu are
calculated from the last time the submenu
was reset (Y page 276).
The From Start From Start trip computer is
automatically reset when: Menus and submenus
275On-board computer and displays Z

R
the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 miles have been exceeded.
The From Reset
From Reset trip computer is
automatically reset if the value exceeds
9,999 hours or 99,999 miles.
ECO display Example: ECO display
The ECO display is not available for AMG
vehicles.
X Press the =or; button on the
steering wheel to select the Trip
Trip menu.
X Select ECO DISPLAY
ECO DISPLAY with9 or:.
If the ignition remains switched off for longer
than four hours, the ECO display will be
automatically reset.
For further information on the ECO display,
see (Y page 192).
Displaying the range and current fuel
consumption X
Press the =or; button on the
steering wheel to select the Trip
Trip menu.
X Press the 9or: button to select the
current fuel consumption (not for AMG
vehicles) and the approximate range.
The approximate range that can be covered
depends on the fuel level and your current driving style. If there is only a small amount
of fuel left in the fuel tank, the display shows
a vehicle being refueled
Cinstead of the
range.
Digital speedometer :
Shift recommendation (Y page 178)
; Digital speedometer
Gearshift recommendation :is not given on
AMG vehicles.
X Press the =or; button on the
steering wheel to select the Trip Tripmenu.
X Press the 9or: button to select the
digital speedometer.
Resetting values Example: resetting the trip computer "From Start"
X
Press the =or; button on the
steering wheel to select the Trip Tripmenu.
X Press the 9or: button to select the
function that you wish to reset.
X Press the abutton.
X Press the :button to select Yes
Yesand
press the abutton to confirm.
You can reset the values of the following
functions:
R Trip odometer
R "From Start" trip computer 276
Menus and submenusOn-board computer and displays

R
"From Reset" trip computer
R ECO display
i If you reset the values in the ECO display,
the values in the "From start" trip computer
are also reset. If you reset the values in the
"From start" trip computer, the values in
the ECO display are also reset. Navigation system menu
Displaying navigation instructions In the
Navi Navimenu, the multifunction display
shows navigation instructions.
For more information, see the separate
operating instructions.
X Switch on the audio system with Becker ®
MAP PILOT or COMAND; see the separate
operating instructions.
X Press the =or; button on the
steering wheel to select the Navi
Navi menu.
Route guidance not active :
Direction of travel
; Current road
Route guidance active No change of direction announced
:
Distance to the destination
; Distance to the next change of direction =
Current road
? "Follow the road's course" symbol
Change of direction announced without a
lane recommendation :
Road into which the change of direction
leads
; Distance to change of direction and visual
distance display
= Change-of-direction symbol
When a change of direction is announced, you
will see symbol =for the change of direction
and distance graphic ;. The distance
indicator shortens towards the top of the
display as you approach the point of the
announced change of direction.
Change of direction announced with a
lane recommendation :
Road into which the change of direction
leads
; Distance to change of direction and visual
distance display
= New lane during a change of direction
? Uninterrupted lane
A Lane recommendation
B Change-of-direction symbol
On multilane roads, the system can display
lane recommendation =for the next change
of direction. During the change of direction,
additional lanes may be displayed. Menus and submenus
277On-board computer and displays Z

Lane recommendations are only displayed if
the relevant data is available on the digital
map.
Other status indicators of the
navigation system R
O: you have reached the destination or an
intermediate destination.
R New Route...
New Route... orCalculating Route Calculating Route:
calculating a new route
R Off Map
Off Map orOff
Off Mapped
Mapped Road
Road: the vehicle
position is outside the area of the digital
map (off-map position).
R No Route No Route : no route could be calculated to
the selected destination. Audio menu
Selecting a radio station :
Waveband
; Station frequency with memory position
i Station ;is displayed with the station
frequency or station name. The memory
position is only displayed along with
station ;if this has been stored.
X Switch on COMAND and select Radio; see
the separate operating instructions.
X Press the =or; button on the
steering wheel to select the Audio
Audio menu.
X To select a stored station: briefly press
the 9 or: button. X
To select a station from the station
list: press and briefly hold the 9
or : button.
If no station list is received:
X To select a station using the station
search: press and briefly hold the 9
or : button.
i For information on switching waveband
and storing stations; see the separate
operating instructions.
i SIRIUS XM satellite radio functions like a
normal radio.
For more information on satellite radio
operation, see the separate operating
instructions.
Operating an audio player or audio
media Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
X
Switch on COMAND and activate audio
CD/DVD mode or MP3 mode; see the
separate operating instructions.
X Press the =or; button on the
steering wheel to select the Audio
Audio menu.
X To select the next/previous track:
briefly press the 9or: button.
X To select a track from the track list
(rapid scrolling): press and hold the
9 or: button until the desired track
has been reached :.
If you press and hold 9or:, the
rapid scrolling speed is increased. Not all
audio drives or data carriers support this
function. 278
Menus and submenusOn-board computer and displays