2013 MERCEDES-BENZ GL-Class stop start

of the towing vehicle, as the latter is
equipped 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
coupling up a trailer, please observe the
following:
R Unless highway level has been set
manually, the vehicle is automatically
lowered to highway level. This is the case
if a speed of 5mph(8km/h) is reached.
R High-speed level is not available.
These restrictions apply to all accessories
powered through a connectio nto 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 Canadia nprovinces
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
coupling, not to the bumper or the axle. Leave enough play in the chains to make
tight cornering possible.
R As eparate brake system for certain types
of trailer.
R As afety switch for braked trailers. Check
the specific legal requirements applicable
to your state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes. Towing
atrailer
There are numerous legal requirements
concerning the towing of a trailer, e.g .speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
R To acquaint yourself with driving with a
trailer and with the resulting changes to
handling, you should practice cornering,
stopping and backing up in a traffic-free
location.
R Before driving, check:
-Trailer tow hitch
- Safety switch for braked trailers
- Safety chains
- Electrical connections
- Lights
- the wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer features electronically
controlled brakes, pull away the vehicle/
trailer combination carefully, manually
brake using the brake controller, and check
the brakes for correct function. Towing
atrailer
261Driving an d parking Z

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

X
Switch on the mobile phone (see the
separate operating instructions).
X Switch on COMAND (see the separate
operating instructions).
X Establish a Bluetooth ®
connection to
COMAND; see the separate operating
instructions.
X Press the 0002or0005 button on the
steering wheel to select the Tel menu.
You will see one of the following display
messages in the multifunction display:
R Phone READY or the name of the network
provider: the mobile phone has found a
network and is ready to receive.
R Telephone No Service : there is no
network available or the mobile phone is
searching for a network.
Accepting acall Example: incoming call
If someone calls you whe
nyou are in the
Tel menu, a display message appears in the
multifunction display.
X Press the 0004button on the steering
wheel to accept an incoming call.
You can accept a call even if you are not in
the Tel menu.
Rejecting or ending acall X
Press the 000Dbutton on the steering
wheel.
You can end or reject a call even if you are not
in the Tel menu. Dialing a number from the phone book X
Press the 0002or0005 button on the
steering wheel to select the Tel menu.
X Press the 0003,0004or000B button to
switch to the phone book.
X Press the 0003or0004 button to select the
desired name.
or
X To begin rapid scrolling: press and hold
the 0003 or0004 button for longer than
one second.
Rapid scrolling stops whe nyou release the
button or reach the end of the list.
X If only one telephone number is stored
for a name: press the0004or000B button
to start dialing.
or
X If there is more than one number for a
particular name: press the0004or000B
button to display the numbers.
X Press the 0003or0004 button to select the
number you want to dial.
X Press the 0004or000B button to start
dialing.
or
X To exit the telephone book: press the
000D or0007 button.
Redialing The on-board computer saves the last names
or numbers dialed in the redial memory.
X
Press the 0002or0005 button on the
steering wheel to select the Tel menu.
X Press the 0004button to switch to the
redial memory.
X Press the 0003or0004 button to select the
desired name or number.
X Press the 0004or000B button to start
dialing.
or
X To exit the redial memory: press the
000D or0007 button. Menus and submenus
275On-board computer and displays Z

Stopping the RACETIMER
X
Press the 0007button on the steering
wheel.
X Press 000Bto confirm 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
000B to confirm Start , timing is continued.
Resetting the current lap
X Stop the RACETIMER.
X Press the 0002or0005 button to select
Reset Lap .
X Press 000Bto reset the lap time to "0".
Deleting all laps If you switch off the engine, the RACETIMER
is reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If
you have stopped 16 laps, the current lap
does not have to be reset.
X Reset the current lap.
X Press 000Bto confirm Reset .
Reset Race Timer? appears in the
multifunction display.
X Press the 0004button to select Yes and
press the 000Bbutton to confirm.
All laps are deleted. Overall statistics
0002
RACETIMER overall evaluation
0003 Total time driven
0021 Average speed
0020 Distance covered
001E Maximum speed
This function is shown if you have stored at
least one lap and stopped the RACETIMER.
X Press the 0002or0005 button on the
steering wheel to select the AMG menu.
X Press the 0003button repeatedly until the
overall evaluation is shown.
Lap statistics 0002
Lap
0003 Lap time
0021 Average lap speed
0020 Lap length
001E Top speed during lap 284
Menus and submenusOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
PRE-SAFE
Functions
Currently Limited
See Operator's
Manual Vehicles without the Active Driving Assistance package: Adaptive
Brake Assis
tis 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
stations 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
message 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 183).
X Cleant he bumpers (Y page 375).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 72). 294
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
PRE-SAFE
Functions
Currently Limited
See 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 radiato rgrill and the bumper are dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations 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
message 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 183).
X Clean the sensors in the radiator grill and the bumper
(Y page 375).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 72). PRE-SAFE
Functions Limited
See Operator's
Manual 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. 001F
SRS Malfunction
Service Required There is a malfunction in the SRS (Supplemental Restraint
System).
The
001F warning lamp also lights up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered 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.
Further information on occupant safety (Y page 43). Display messages
295On-board computer and displays Z

Engine
Display messages Possible causes/consequences and
0001 Solutions
000F
Check Coolant
Level See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 369).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 000E The fan motor is faulty.
X
At coolant temperatures below 248 ‡ (120 †) drive to the
neares tqualified specialist workshop.
X Avoid subjecting the engin eto heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. 000E
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolant is too hot.
Aw
arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom 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 183).
X Waitu ntil the engine has cooled down.
X Make sure tha tthe 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 †).
Otherwise, 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 †). Display messages
303On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
Blind Spot Assist or Active Blind Spot Assist is temporarily
inoperative. Possible causes are:
R
the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the rada rsensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 0003indicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply, the display
message disappears.
Blind Spot Assist or Active Blind Spot 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 183).
X Clean the sensors (Y page 375).
X Restart the engine. Blind Spot Assist
Inoperative or
Active Blind Spot Assist Inoperative Blind Spot Assist or Active Blind Spot Assist is defective.
The yellow
0003indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Park Assist
Canceled The driver's door is open and the driver's seat belt has not been
fastened.
X
Repeat the parking process with the seat belt fastened and the
driver's door closed. You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
X
While steering intervention is active, make sure that the
multifunction steering wheel is not touched unintentionally. The vehicle has started to skid and ESP
®
has intervened.
X Use Active Parking Assist again later (Y page 221). Display messages
311On-board computer and displays Z