2016 MERCEDES-BENZ GL brake light

Display messages
Possible causes/consequences and P Solutions
' (USA
only)
M (Canada
only)
Check brake fluid
level There is no t enough brak e flui d in th e brak e flui d reservoir . In
addition , th e ' (US A only) or M (Canada only) warnin g lamp
lights up in th e instrumen t cluster and a warnin g tone sounds.
G WARNIN G
The brakin g effec t may be impaired.
There is a ris k of an accident. X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions. Do no t continue drivin g
under any circumstances. X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Consult a qualified specialist workshop .X
Do no t add brak e fluid. This does no t correc t th e malfunction .
& Check brake pad
wea r The brak e pads/lining s hav e reached their wear limit.X
Visit a qualified specialist workshop .
S Inoperative On e or mor e main features of th e mbrace system are malfunc -
tioning. X
Hav e th e mbrace system checke d at a qualified specialist work-
shop.
PRE-SAFE Inopera‐
tiv e see Opera‐
tor's Manual Importan t function s of PRE-SAF E ®
hav e failed. Al l other occupant
safet y systems , e.g. air bags , remain available.X
Visit a qualified specialist workshop immediately. Display messages 29 7
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Radar Sensor s
Dirty See Opera‐
tor's Manual At leas t on e of th e following drivin g systems or drivin g safet y sys-
tems is temporarily restricted or inoperative: R
PRE-SAF E ®
Brake R
Active Lan e Keepin g Assis tR
Active Blind Spot Assis t
If th e rada r sensor system in fron t is dirty, Active Blind Spot Assis t
will no t perform a course-correcting brak e application .
Possibl e causes are: R
th e sensor s in th e radiato r trim and/o r in th e bumpers are dirtyR
th e function of th e drivin g system and/o r drivin g safet y system
is impaire d due to heav y rain or snow.
A warnin g tone also sounds.
Whe n th e causes state d abov e no longer apply, th e display mes -
sage disappears. Al l drivin g systems and drivin g safet y systems
are operative again .
If th e display message does no t disappear :X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Switc h of f th e engine.X
Clean th e sensor s in th e following location s ( Y
page 380):R
in th e radiato r trim R
in th e fron t bumper R
in th e rear bumper, particularl y in th e middle of th e rear
bumper X
Restart th e engine.
The display message disappears.
u Restraint sys . mal ‐
function Consul t
workshop The restrain t system is faulty.
The u warnin g lamp also lights up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th e event of an accident, may no t be
triggered .
There is an increase d ris k of injury.X
Visit a qualified specialist workshop .
Observ e th e additional information on restrain t systems
( Y
page 44) . Display messages 29 9
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
If these condition s are fulfilled , th e front-passenger seat can be
occupied again . Whether th e PASSENGER AI R BA G OF F indicato r
lamp remain s lit or goe s out depend s on how OCS classifie s th e
occupant .
If th e condition s are no t fulfilled , th e system is no t operating cor-
rectly. X
Visit a qualified specialist workshop immediately.
Lights
i Vehicles wit h LE D bulbs in th e ligh t clusters :
The display message fo r th e correspondin g lamp only appears when all of th e LEDs in th e
lamp hav e failed.
Display messages
Possible causes/consequences and P Solutions
I Check Lef t Corner ‐
ing Light or Check
Right Cornering
Light The lef t or right-hand cornering ligh t is defective.X
Visit a qualified specialist workshop .
I Check Lef t Low
Bea m or Check
Right Low Bea m The lef t or right-hand low-beam headlamp is defective. X
Chec k whether you are permitte d to replac e th e bulb yourself
( Y
page 136).
or X
Visit a qualified specialist workshop .
I Traile r right tai l
lam p The lef t or right-hand trailer tai l lamp is faulty.X
Consult th e manufacturer' s operating instructions.
I Traile r lef t indi‐
cator or Traile r
right indicator The lef t or right-hand trailer tur n signal lamp is defective.X
Consult th e manufacturer' s operating instructions.
I Traile r brake lam p The trailer brak e lamp is defective.X
Consult th e manufacturer' s operating instructions.Display messages 30 3
On-board computer and displays Z

Problem
Possible causes/consequences and P Solutions
I (USA only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
$
the yellow warning
lamp for the electric
parking brake lights up. X
Observe the additional display messages in the multifunction
display.
u
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning. The restraint system is faulty.
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
Observe the additional display messages in the multifunction
display. X
Drive on carefully. X
Have the restraint system checked immediately at a qualified
specialist workshop.
For further information about the restraint system, see
( Y
page 44).Warning and indicator lamps in the instrument cluster 333
On-board computer and displays Z

Do not remove the SmartKey from the
ignition lock. Do not open the driver's
door or front-passenger door when the
engine is switched off. Otherwise, the
automatic transmission selects park
position P automatically and locks the
wheels. You can prevent this by shifting
the automatic transmission to N before-
hand. R
Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position N :X
Make sure the vehicle is stationary and the
ignition is switched off. X
Turn the SmartKey to position 2 in the igni-
tion lock ( Y
page 165).
Use the SmartKey instead of the Start/
Stop button on vehicles with KEYLESS-GO. X
Depress and hold the brake pedal. X
Shift the automatic transmission to posi-
tion N .X
Release the brake pedal. X
Release the electric parking brake. X
Switch off the ignition and leave the Smart-
Key in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cl e
aning 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 inlets. 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
G WARNING
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.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following: R
tires R
door gaps, roof gaps, joints, etc. R
electrical components Care 377
Maintenance and care Z

R
battery R
connectors R
lights R
seals R
trim R
ventilation slots
Damaged seals or electrical components
can lead to leaks or failures.
Cleaning the paintwork
! Do not affix: R
stickers R
films R
magnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit a qualified spe-
cialist workshop. X
Remove dirt immediately, where possible,
while avoiding rubbing too hard. X
Soak insect remains with insect remover
and rinse off the treated areas afterwards. X
Soak bird droppings with water and rinse
off the treated areas afterwards. X
Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid. X
Use tar remover to remove tar stains. X
Use silicone remover to remove wax.
If water no longer forms "beads" on the paint
surface, use the paint care products recom-
mended and approved by Mercedes-Benz.
This is the case approximately every three to
five months, depending on the climate con-
ditions and the care product used.
If dirt has penetrated the paint surface or if
the paint has become dull, the paint cleaner
recommended and approved by Mercedes-
Benz should be used. Do not use these care products in the sun or
on the hood while the hood is hot. X
Use a suitable touch-up stick, e.g. MB
Touch-Up Stick, to repair slight damage to
the paintwork quickly and provisionally.
Matte finish care
! Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to
shine.
! The following may cause the paint to
become shiny and thus reduce the matte
effect: R
Vigorous rubbing with unsuitable mate-
rials. R
Frequent use of car washes. R
Washing the vehicle in direct sunlight.
! Never use paint cleaner, buffing or pol-
ishing products, or gloss preserver, e.g.
wax. These products are only suitable for
high-gloss surfaces. Their use on vehicles
with matte finish leads to considerable sur-
face damage (shiny, spotted areas).
Always have paintwork repairs carried out
at a qualified specialist workshop.
! Do not use wash programs with a hot wax
treatment under any circumstances.
Observe these notes if your vehicle has a
clear matte finish. This will help you to avoid
damage to the paintwork due to incorrect
treatment.
These notes also apply to light alloy wheels
with a clear matte finish.
i The vehicle should preferably be washed
by hand using a soft sponge, car shampoo
and plenty of water.
i Use only insect remover and car shampoo
from the range of recommended and
approved Mercedes-Benz care products.378
Care
Maintenance and care

Cleaning the vehicle parts
Cleaning the wheels
G WARNING
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.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! 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
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.
Cleaning the windows
G WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
! Do not use dry cloths, abrasive products,
solvents or cleaning agents containing sol-
vents to clean the inside of the windows. Do
not touch the insides of the windows with
hard objects, e.g. an ice scraper or ring.
There is otherwise a risk of damaging the
windows. ! Clean the water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals
and pollen may under certain circumstan-
ces prevent water from draining away. This
can lead to corrosion damage and damage
to electronic components. X
Clean the inside and outside of the win-
dows with a damp cloth and a cleaning
product that is recommended and
approved by Mercedes-Benz.
Cleaning wiper blades
G WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
! Do not pull the wiper blade. Otherwise,
the wiper blade could be damaged.
! Do not clean wiper blades too often and
do not rub them too hard. Otherwise, the
graphite coating could be damaged. This
could cause wiper noise.
! Hold the wiper arm securely when folding
back. The windshield could be damaged if
the wiper arm smacks against it suddenly. X
Fold the windshield wiper arms away from
the windshield. X
Carefully clean the wiper blades with a
damp cloth. X
Fold the windshield wiper arms back again
before switching on the ignition.
Cleaning the exterior lighting
! Only use cleaning agents or cleaning
cloths which are suitable for plastic light
lenses. Unsuitable cleaning agents or
cleaning cloths could scratch or damage
the plastic light lenses. Care 379
Maintenance and care Z

X
Clean the plast ic lenses of the exterior
lighting using a wet sponge and a mild
cleaning agent, e.g. Mercedes-Benz car
shampoo or cleaning cloths.
Cleaning the mirror turn signals
! On ly use cleaning agents or cleaning
cloths that are suitable for plast ic lenses.
Unsuit able cleaning agents or cleaning
cloths could scratch or damage the plastic
lenses of the mirror turn signals. X
Clean the plast ic lenses of the mirror turn
signals in the exterior mirror housing using
a wet sponge and mild cleaning agent, e.g.
Mercedes-Benz car shampoo or cleaning
cloths.
Cleaning the side running board
! Do not clean the aluminum inserts of the
side running board with alkaline or acidic
cleaners, such as wheel cleaner. Do not use
acid ic wheel cleaners to remove brake
dust. The aluminum inserts could other-
wise be damaged.
Cleaning the sensors
! If you clean the sensors with a power
washer, make sure that you keep a dis-
tance of at least 11.8 in (30 cm) between
the veh icle and the power washer nozzle.
In formation about the correct distance is
availab le from the equipment manufac-
turer. X
Clean sensors C of the driv ing systems
wit h water, car shampoo and a soft cloth.
Cleaning the rear view camera
! Do not clean the camera lens and the area
around the rear view camera with a power
washer.
X
Use clear water and a soft cloth to clean
camera lens C .
Cleaning the 360° camera
! Do not clean the camera lens and the area
around the 360° camera with a power
washer.360380
Care
Maintenance and care