2015 MERCEDES-BENZ GL-Class stop start

of the towing vehicle, as the latter is equip-
ped with an anti-lock brake system. Doing
so will result in a loss of function of the
brake systems of both the vehicle and the
trailer.
X Make sure that the automatic transmission
is set to position P.
X Apply the vehicle's electric parking brake.
X Start the engine.
X Vehicles with the AIRMATIC package:
select highway level.
X Vehicles with ADS: set ADS toAUTOor
COMF.
X Switch off the engine.
X Close all doors and the tailgate.
X Couple up the trailer.
X Establish all electrical connections.
X Check that the trailer lighting system is
working.
i Vehicles with the AIRMATIC package:
with a trailer attached, the vehicle will
always remain at highway level. When cou-
pling up a trailer, please observe the fol-
lowing:
R Unless highway level has been set man-
ually, the vehicle is automatically low-
ered to highway level. This is the case if a
speed of 5 mph (8 km/h) is reached.
R High-speed level is not available.
These restrictions apply to all accessories
powered through a connection to the trailer power socket of your vehicle, e.g. a bicycle
carrier.
Observe the maximum permissible trailer
dimensions (width and length).
Most U.S. states and all Canadian provinces
require by law:
R Safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must be fastened to the vehicle's trailer cou-
pling, not to the bumper or the axle. Leave enough play in the chains to make
tight cornering possible.
R A separate brake system for certain types
of trailer.
R A safety switch for braked trailers. Check
the specific legal requirements applicable
to your state.
If the trailer detaches from the towing vehi- cle, the safety switch applies the trailer's
brakes. Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Make sure that your car/trailer
combination complies with the local regula-
tions: R in your place of residence
R in the location to which you are driving
The police and local authorities can provide
reliable information.
Observe the following when towing a trailer:
R To gain driving experience and to become
accustomed to the new handling charac-
teristics, you should practice the following
in a traffic-free location:
- cornering
- stopping
- backing up
R Before driving, check:
- trailer tow hitch
- safety switch for braked trailers
- safety chains
- electrical connections
- lights
- wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the trailer.
R If the trailer has electronically controlled
brakes, pull away carefully. Brake manually 268
Towing a trailerDriving and parking

Left control panel
0059
0065 R
Calls up the menu and menu bar 0063
0064 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 0063
0064 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 0076 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
0076 R
Rejects or ends a call
R Exits phone book/redial mem-
ory 0061 R
Makes or accepts a call
R Switches to the redial memory 0081
0082 R
Adjusts the volume 0063 R
Mute Back button
0038 Press briefly:
R Back
R Switches off the Voice Control
System; see the separate oper-
ating instructions
R Hides display messages/calls
up the last Trip Tripmenu function
used
R Exits the telephone book/redial
memory 0038 Press and hold:
R Calls up the standard display in
the Trip Trip menu Multifunction display
0043
Time
0044 Permanent display: outside temperature
or speed (Y page 285)
0087 Text field
0085 Menu bar 276
Displays and operationOn-board computer and displays

0083
Drive program (Y page 176)
0084 Transmission position (Y page 176)
X To show menu bar 0085:press the 0059
or 0065 button on the steering wheel.
Menu bar 0085disappears after a few seconds.
Text field 0087shows the selected menu or
submenu as well as display messages.
i You can set the time using the audio sys-
tem or COMAND; see the separate operat-
ing instructions.
The following messages may appear in the
multifunction display:
0097 Gearshift recommendation, when
shifting manually (Y page 181)
0095005D0096 Active Parking Assist
(Ypage 228)
CRUISE
CRUISE Cruise control (Y
page 203)
LOW
LOW
RANGE RANGE LOW RANGE off-road gear
(Y
page 261)
00CE Adaptive Highbeam Assist
(Ypage 134)
00A7 ECO start/stop function
(Ypage 171)
00D9 HOLD function (Y page 218) Menus and submenus
Menu overview
Press the 0059or0065 button on the steer-
ing wheel to call up the menu bar and select a
menu.
Operating the on-board computer
(Y page 275).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip Trip menu (Y page 277)
R Navi
Navi menu (navigation instructions)
(Y page 279)
R Audio
Audio menu (Y page 280)
R Tel
Tel menu (telephone) (Y page 281)R
DriveAssist
DriveAssist menu (assistance)
(Y page 283)
R Serv
Serv menu (Y page 284)
R Sett
Sett menu (settings) (Y page 285)
R ON&OFFROAD
ON&OFFROAD menu (Ypage 289)
R AMG
AMG menu in AMG vehicles (Y page 289) Trip menu
Standard display X
Press and hold the 0038button on the
steering wheel until the Trip
Tripmenu with
trip odometer 0043and odometer 0044is
shown.
Trip computer "From Start" or "From
Reset" Example: trip computer "From Start"
0043
Distance
0044 Time
0087 Average speed
0085 Average fuel consumption
X Press the 0059or0065 button on the steer-
ing wheel to select the Trip Tripmenu.
X Press 0063or0064 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 Menus and submenus
277On-board computer and displays Z

You will see one of the following display mes-
sages in the multifunction display:
R Phone READY
Phone READY or the name of the network
provider: the mobile phone has found a
network and is ready to receive.
R Phone No Service
Phone No Service: there is no network
available or the mobile phone is searching
for a network.
Accepting a call Example: incoming call
If someone calls you when you are in the Tel Tel
menu, a display message appears in the mul-
tifunction display.
X Press the 0061button on the steering
wheel to accept an incoming call.
You can accept a call even if you are not in the
Tel
Tel menu.
Rejecting or ending a call X
Press the 0076button on the steering
wheel.
You can end or reject a call even if you are not
in the Tel
Tel menu.
Dialing a number from the phone book X
Press the 0059or0065 button on the steer-
ing wheel to select the Tel Telmenu.
X Press the 0063,0064or0076 button to
switch to the phone book. X
Press the 0063or0064 button to select the
desired name.
or X To begin rapid scrolling: press and hold
the 0063 or0064 button for longer than
one second.
Rapid scrolling stops when you release the button or reach the end of the list.
X If only one telephone number is stored
for a name: press the0061or0076 button
to start dialing.
or
X If there is more than one number for a
particular name: press the0061or0076
button to display the numbers.
X Press the 0063or0064 button to select the
number you want to dial.
X Press the 0061or0076 button to start dial-
ing.
or
X To exit the telephone book: press the
0076 or0038 button.
Redialing The on-board computer saves the last names
or numbers dialed in the redial memory.
X Press the 0059or0065 button on the steer-
ing wheel to select the Tel Telmenu.
X Press the 0061button to switch to the
redial memory.
X Press the 0063or0064 button to select the
desired name or number.
X Press the 0061or0076 button to start dial-
ing.
or X To exit the redial memory: press the
0076 or0038 button. 282
Menus and submenusOn-board computer and displays

SETUP shows the drive program, the ESP
®
(Electronic Stability Program) mode and the
suspension tuning.
X Press 0059or0065 on the steering wheel
to select the AMG
AMGmenu.
X Press the 0063button repeatedly until
SETUP is displayed.
RACETIMER Displaying and starting RACETIMER
The RACETIMER is only intended for use on a
closed race circuit. Do not use the function on
public roads. 0043
Lap
0044 RACETIMER
You can start the RACETIMER when the
engine is running or if the SmartKey is in posi-
tion 2in the ignition lock.
X Press 0059or0065 on the steering wheel
to select the AMG
AMG menu.
X Press the 0063button repeatedly until the
RACETIMER is shown.
X To start: press the 0076button to start the
RACETIMER.
Displaying the intermediate time X
Press the 0059or0065 button to select
Interm. Time Interm. Time.
X Press 0076to confirm.
The intermediate time is displayed for five
seconds.
Starting a new lap 0043
RACETIMER
0044 Fastest lap time (best lap)
0087 Lap
X Press 0076to confirm New Lap New Lap.
i It is possible to store a maximum of six-
teen laps. The 16th lap can only be com-
pleted with Finish Lap
Finish Lap .
Stopping the RACETIMER X
Press the 0038button on the steering
wheel.
X Press 0076to confirm Yes
Yes .
The RACETIMER interrupts timing when you
stop the vehicle and turn the SmartKey to
position 1in the ignition lock. If you turn the
SmartKey to position 2or 3and then press
0076 to confirm Start Start, timing is continued.
Resetting the current lap
X Stop the RACETIMER.
X Press the 0059or0065 button to select
Reset Lap
Reset Lap .
X Press 0076to reset the lap time to "0". 290
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions PRE-SAFE
PRE-SAFE
Functions Cur‐ Functions Cur‐
rently rently
Limited
Limited See
See
Operator's Manual
Operator's Manual Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensor in the bumper is dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display mes-
sage disappears.
Adaptive Brake Assist is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Clean the bumpers (Y page 381).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 74). 300
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions PRE-SAFE
PRE-SAFE
Functions Cur‐ Functions Cur‐
rently rently
Limited
Limited See
See
Operator's Manual
Operator's Manual Vehicles with the Active Driving Assistance package:
PRE
‑SAFE ®
Brake is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display mes-
sage disappears.
PRE ‑SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Clean the sensors in the radiator trim and the bumper
(Y page 381).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 74). PRE-SAFE PRE-SAFE
Functions Limited Functions Limited
See See
Operator's
Operator's Man‐
Man‐
ual
ual Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is faulty. The distance warning function may also have
failed.
Vehicles with the Active Driving Assistance package:
PRE ‑SAFE ®
Brake is faulty. BAS PLUS or the distance warning
function may also have failed.
X Visit a qualified specialist workshop. 0075
Restraint Restraint
Sys.
Sys.Mal‐
Mal‐
function Service
function Service
Required Required The restraint system is faulty.
The
0075 warning lamp also lights up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig- gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about the restraint system, see
(Y page 44). Display
messages
301On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 003D
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
! Do not continue driving. The engine could otherwise overheat.
X Secure the vehicle against rolling away (Y page 190).
X Consult a qualified specialist workshop. Display
messages
309On-board computer and displays Z