2015 MERCEDES-BENZ GLK-CLASS SUV air condition

Display messagesPossible causes/consequences and M Solutions
Park Assist InoperZ
ative
You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assist will become available again after approx -
imately ten minutes ( Y page 189).
X Pull over and stop the vehicle safely as soon as possible, p aying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed: X Visit a qualified specialist workshop.
PARKTRONIC is defective.
X Visit a qualified specialist workshop.
Park Assist FinZ
ished
The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
DISTRONIC PLUS OffDISTRONIC PLUS has been deactivated ( Y page 176). If it was
deactivated automatically, a warning tone also sounds.
DISTRONIC PLUS Now
Available
DISTRONIC PLUS is operational again after having been tempo-
rarily unavailable. You can now reactivate DISTRONIC PLUS
( Y page 176).
DISTRONIC PLUS CurZ
rently Unavailable
See Operator's ManZ
ual
DISTRONIC PLUS is temporarily inoperative. Possible cause s 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 the system is outside the operating temperature range.
R the on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears.
DISTRONIC PLUS is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, p aying
attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 168).
X Clean the sensors in the radiator grill and the bumper
(Y page 309).
X Restart the engine.
Display messages253
On-board computer and displays
Z

Tires
Display messagesPossible causes/consequences and M Solutions
Correct
Tire Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity ( Y page 339).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor ( Y page 342).
Check
Tires
The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may gre atly
impair tire traction.
R the driving characteristics, as well as steering and braki ng, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or b raking
maneuvers. Pay attention to the traffic conditions as y ou do so.
X Secure the vehicle against rolling away ( Y page 168).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Y page 314).
X Check the tire pressure ( Y page 339).
X If necessary, correct the tire pressure.
Display messages255
On-board computer and displays
Z

Safety systems
ProblemPossible causes/consequences and M Solutions
$ (USA only)
J (Canada only)
The red brake system
warning lamp comes on while the engine is run-
ning. A warning tone
also sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
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, p aying
attention to road and traffic conditions. Do not con tinue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 168).
X Do not add brake fluid. Adding more will not remedy the mal-
function.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display.
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunc -
tion. BAS (Brake Assist), BAS PLUS, ESP ®
(Electronic Stability
Program), PRE

ProblemPossible causes/consequences and M Solutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.The coolant level is too low.
If the coolant level is correct, the airflow to the eng ine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
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 168).
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 Check the coolant level and add coolant ( Y page 303). Observe
the warning notes.
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. drivin g in moun-
tainous terrain, and stop-and-go traffic.
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coo lant level may
be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can ca use 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 Observe the additional display messages in the multifunction
display.
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 168).
X Wait until the engine has cooled down.
Warning and indicator lamps in the instrument cluster269
On-board computer and displays
Z

Tires
ProblemPossible causes/consequences and M Solutions
h
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
GWARNING
With tire pressures which are too low, there is a risk of the fol-
lowing hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may gre atly
impair tire traction.
R the driving characteristics, as well as steering and braki ng, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or b raking
maneuvers. Pay attention to the traffic conditions as y ou do so.
X Secure the vehicle against rolling away ( Y page 168).
X Observe the additional display messages in the multifunction
display.
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Y page 314).
X Check the tire pressure ( Y page 339).
X If necessary, correct the tire pressure.
h
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit.The tire pressure monitor is faulty.
GWARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster271
On-board computer and displays
Z

Displaying service messages
XSwitch on the ignition.
X Press the = or ; button on the steer-
ing wheel to select the
Serv. menu.
X Press the 9 or : button to select the
ASSYST PLUS submenu and confirm by
pressing the a button.
The service due date appears in the multi-
function display.
Information about Service
Resetting the ASSYST PLUS service
interval display
! If the ASSYST PLUS service interval dis-
play has been inadvertently reset, this set-
ting can be corrected at a qualified special-
ist workshop.
Have service work carried out as described in the Maintenance Booklet. This may oth-
erwise lead to increased wear and damage
to the major assemblies or the vehicle.
A qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center, will reset
the ASSYST PLUS service interval display
after the service work has been carried out.
You can also obtain further information on
maintenance work, for example.
Special service requirements
The specified maintenance interval takes only the normal operation of the vehicle into
account. Under arduous operating conditions
or increased load on the vehicle, mainte-
nance work must be carried out more fre-
quently, for example:
R regular city driving with frequent intermedi-
ate stops
R if the vehicle is primarily used to travel
short distances R
use in mountainous terrain or on poor road
surfaces
R if the engine is often left idling for long peri-
ods
Under these or similar conditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must
be checked more often. Further information
can be obtained at a qualified specialist work- shop, e.g. an authorized Mercedes-Benz Cen-
ter.
Driving abroad
An extensive Mercedes-Benz Service network
is also available in other countries. You can
obtain further information from any author-
ized Mercedes-Benz Center.
Care
General notes
!
For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
! Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
Care305
Maintenance and care
Z

should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz.
Exterior care
Automatic car wash
GWARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R when towing the vehicle
R in the car wash
! Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts.
! Make sure that the automatic transmis-
sion is in position N when washing your
vehicle in a tow-through car wash. The vehi-
cle could be damaged if the transmission is
in another position.
! Make sure that:
R the side windows and the sliding sunroof
are fully closed.
R the ventilation/heating is switched off
(the OFF button has been pressed).
R the windshield wiper switch is in position
0 . Otherwise, the vehicle might be damaged.
You can wash the vehicle in an automatic car wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the wind-shield.
Washing by hand
In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in all coun-
tries concerned.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft sponge to clean.
X Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect- edly. There is a risk of an accident.
306Care
Maintenance and care

ieving an increased driving force (cutting
action).
For more information on driving with the
emergency spare wheel, see ( Y page 366).
Tire pressure
Tire pressure specifications
Operation with a trailer: the applicable
value for the rear tires is the maximum tire
pressure value stated in the table inside the
fuel filler flap.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about the tire pressure. You can also check the tire
pressure using the on-board computer.
GWARNING
Underinflated or overinflated tires pose the
following risks:
R the tires may burst, especially as the load
and vehicle speed increase.
R the tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
R the driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
R monthly, at least
R if the load changes
R before beginning a long journey
R under different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
The recommended tire pressures for the tires
mounted at the factory can be found on the
labels described here. 1.)
Tire and Loading Information placard
on the B-pillar on the driver's side of the vehi-
cle ( Y page 343).
The Tire and Loading Information placard con- tains the recommended tire pressures for
cold tires on a fully loaded vehicle and for the
maximum permissible vehicle speed.
iThe specifications given on the following
Tire and Loading Information placard are
examples. Tire pressure specifications are
vehicle-specific and may deviate from the
data shown here. The tire pressures appli-
cable to your vehicle can be found on the
Tire and Loading Information placard on
your vehicle.
:Recommended tire pressures
Option 2) Tire pressure table on the inside of
the fuel filler flap.
The tire pressure table contains the recom-
mended pressures for cold tires for various
operating conditions, i.e. differing load and
speed conditions.
iSpecifications shown in the examples of
tire pressure tables are for illustration pur-
poses only. Tire pressure specifications are
vehicle-specific and may deviate from the
data shown here. Tire pressure specifica-
tions applicable to your vehicle are located in your vehicle's tire pressure table.
336Tire pressure
Wheels and tires