2013 MERCEDES-BENZ GLK-CLASS SUV brake light

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
vehicle, the safety switch applies the
trailer's brakes.
! Do not connect the trailer's
brake system
(if featured) to the hydraulic brake system
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.
i The vehicle's wiring harness features a
connection to the brake indicator lamp.
X Make sure that the automatic transmission
is set to position P.
X Apply the vehicle's parking brake.
X Close all doors and the tailgate.
X Couple up the trailer.
X Establish all electrical connections. Towing a trailer
There are numerous legal requirements
concerning the towing of a

trailer, e.g. speed
restrictions. Make sure that your car/trailer
combination complies with the local
regulations:
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 characteristics, you should practice the
following in a traffic-free location:
-
cornering
- stopping
- backing up
R Before driving, check:
-the trailer tow hitch
- the safety switch for braked trailers
- the safety chains
- electrical connections
- the lights
- the 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
using the brake controller and check
whether the brakes function correctly.
R Secure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
R When you couple up a trailer, check at
regular intervals that the load is firmly
secured. If the trailer is equipped with
trailer lights and brakes, check the trailer
to ensure that these are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when
driving without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
R If possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes. Then
increase the pressure on the brake pedal.
R If the automatic transmission continues to
shift back and forth between two gears Towing a trailer
211
Driving and parking Z

Text field 0043 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:
CRUISE Cruise control (
Y page 169)
00C5 Rear window wiper ( Y page 121)
00CE Adaptive Highbeam Assist
(Y page 114)
00AD ATTENTION ASSIST (Y page 197)
00A7 ECO start/stop function
(Y page 144)
00B0 Lane Keeping Assist (Y page 200) or
Active Lane Keeping Assist
( Y
page 205)
00D9 HOLD function ( Y page 179)
00C7 PRE-SAFE ®
Brake (Y page 69) Menus and submenus
Menu overview
Operating the on-board computer
(Y page 217).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip menu (Y page 219)
R Navi menu (navigation instructions)
(Y page 221)
R Audio menu (Y page 222)
R Tel menu (telephone) ( Y page 223)
R DriveAssist menu (assistance)
(Y page 224)
R Serv menu (Y page 226)
R Sett. menu (settings) (Y page 226)
The Audio, Navi and
Tel menus differ

slightly
in vehicles with an audio system and in
vehicles with COMAND. The examples given
in this Operator's Manual apply to vehicles
equipped with COMAND. Trip menu
Standard display X
Press and hold the 0038 button on the
steering wheel until the Trip menu with
trip odometer 0043 and odometer 0044 is
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 0059 or 0065 button on the
steering wheel to select the Trip menu.
X Press the 0063 or 0064 button to select
From Start or From Reset.
The values in the From Start submenu are
calculated from the start of a journey,
whereas the values in the From Reset
submenu are calculated from
the

last time the
submenu was reset ( Y page 220).
The From Start trip computer is
automatically reset if:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9999 miles have been exceeded. Menus and submenus
219
On-board computer and displays Z

X
Press the 0059 or 0065 button on the
steering wheel to select the Sett. menu.
X Press the 0064 or 0063 button to select the
Vehicle submenu.
X Press 0076 to confirm.
X Press the 0064 or 0063 button to
select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the 0037 symbol in the multifunction
display lights up red.
X Press the 0076 button to save the setting.
Activating/deactivating the radar sensor
system
X Press the 0059 or 0065 button on the
steering wheel to select the Sett. menu.
X Press the 0064 or 0063 button to
select the
Vehicle submenu.
X Press 0076 to confirm.
X Press the 0063 or 0064 button to select
Radar Sensor (See Oper. Manual):.
You will see the selected setting: Enabled
or Disabled.
X Press the 0076 button to save the setting.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 171)
R BAS PLUS (Y page 65)
R PRE-SAFE ®
Brake ( Y

page 69)
R Blind Spot Assist (Y page 198) or Active
Blind Spot Assist (Y page 202)
Convenience Activating/deactivating the EASY-
ENTRY/EXIT feature
G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel and the driver's seat, you
and other vehicle occupants – particularly
children – could become trapped. There is a
risk of injury. While the EASY-ENTRY/EXIT feature is
making adjustments, make sure that no one
has any body parts in the sweep of the seat
and the steering wheel.
If somebody becomes trapped:
R
press one of the memory function position
buttons, or
R move the switch for steering wheel
adjustment in the opposite direction

to that
in which the steering wheel is moving.
The adjustment process is stopped.
X Press the 0059 or 0065 button on the
steering wheel to select the Sett. menu.
X Press the 0064
or 0063
button to

select the
Convenience submenu.
X Press 0076 to confirm.
X Press the 0064 or 0063 button to
select the
Easy Entry/Exit function.
If the Easy Entry/Exit function is
activated, the vehicle steering wheel is
displayed in red in the multifunction
display.
X Press the 0076 button to save the setting.
Further information on the EASY-ENTRY/EXIT
feature ( Y page 102).
Switching the belt adjustment on/off
X Press the 0059 or 0065 button on the
steering wheel to select the Sett. menu.
X Press the 0064 or 0063 button to
select the
Convenience submenu.
X Press 0076 to confirm.
X Press the 0064 or 0063 button to
select the
Belt Adjustment function.
When the Belt Adjustment function is
activated, the vehicle seat belt is displayed
in red in the multifunction display.
X Press the 0076 button to save the setting.
For further information on belt adjustment,
see ( Y page 56). Menus and submenus
229
On-board computer and displays Z

Safety systems
Display messages Possible causes/consequences and
0050 Solutions002500E5
Currently
Unavailable See
Operator's Manual ABS (Anti-lock Braking System), ESP
®
(Electronic Stability
Program), BAS (Brake Assist), PRE-SAFE®
,
the HOLD function, hill
start assist and ESP ®
trailer stabilization are temporarily
unavailable.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 00E5, 00BB and 0025 warning lamps light up in
the instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
R self-diagnosis is not yet complete.
R the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP®


is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive on a suitable stretch of road, making slight
steering movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 00E5
Inoperative See
Operator's Manual ESP
®
, BAS, PRE-SAFE ®
, the HOLD function, hill start assist and
ESP ®
trailer stabilization are unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 00E5 and 00BB warning lamps light up in the
instrument cluster.
The self-diagnosis function might not be complete, for example.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. 232
Display messages
On-board computer and displays

Display messages Possible causes/consequences and
0050 SolutionsThe braking distance in an emergency braking situation can thus
increase.
If ESP
®
is not
operational, ESP®

is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive on a suitable stretch of road, making slight
steering movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. 007A0025
00E5
Inoperative See
Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, PRE-
SAFE ®
, the HOLD function, hill start assist and ESP ®
trailer
stabilization are unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 00E5, 00BB and 0025 warning lamps light up in
the instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP®


is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0049(USA
only)004D(Canada
only)
Release Parking
Brake You are driving with the parking brake applied. A warning tone also
sounds.
X
Release the parking brake. Display messages
233
On-board computer and displays Z

Display messages Possible causes/consequences and
0050 Solutions0027(USA
only)004D(Canada
only)
Check Brake Fluid
Level There is not enough brake fluid in the brake fluid reservoir.
In addition, the 0027 (USA only)/004D (Canada only) warning
lamp lights up in the instrument cluster and a warning tone
sounds.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic
conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 160).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0026
Check Brake Pad
Wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. 0053
mbrace Inoperative One or more main features of the mbrace system are
malfunctioning.
X
Have the mbrace system checked immediately at a qualified
specialist workshop. PRE-SAFE
Inoperative See
Operator's Manual
Important functions of PRE-SAFE
®
have failed. All other
occupant
safety systems, e.g. air bags, remain available.
X Visit a qualified specialist workshop immediately.234
Display messages
On-board computer and displays

Display messages Possible causes/consequences and
0050 SolutionsPRE-SAFE
Functions
Currently Limited
See Operator's
Manual
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 grill 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
stations or other sources of electromagnetic radiation.
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 160).
X Clean the sensors in the radiator grill and the bumper
(Y page 307).
X Restart the engine. PRE-SAFE
Functions Limited
See Operator's
Manual
PRE-SAFE
®
Brake is inoperative due to a malfunction. BAS PLUS
or the distance warning signal may also have failed.
X Visit a qualified specialist workshop. 0075
SRS Malfunction
Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The 0075 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.
For further information about SRS, see (Y page 41). Display messages
235
On-board computer and displays Z

Problem Possible causes/consequences and
0050 Solutions0025
The yellow ABS warning
lamp is lit while the
engine is running. ABS is temporarily unavailable. BAS, BAS PLUS, ESP
®
, EBD
(electronic brake force distribution), PRE-SAFE ®
,
PRE-SAFE ®
Brake, the HOLD function, hill start assist and
ESP ®
trailer stabilization are therefore also deactivated, for
example.
Possible causes are:
R Self-diagnosis is not yet complete.
R The on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP®

is unable to stabilize the vehicle.
There is a risk of an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.260
Warning and indicator lamps in the instrument cluster
On-board computer and displays