brake fluid MERCEDES-BENZ GL 2016 Owners Manual

BAS PLUS (Brake Assist System
PLUS) .................................................... 69
Battery (SmartKey)
Checking .......................................... 85
Important safety notes .................... 85
Replacing ......................................... 85
Battery (vehicle)
Charging ........................................ 394
Display message ............................ 307
Important safety notes .................. 391
Jump starting ................................. 395
Overview ........................................ 391
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating ................. 282
Display message ............................ 314
Notes/function .............................. 244
Trailer towing ................................. 246
see Active Blind Spot Assist
BlueTEC
Adding DEF .................................... 186
BlueTEC (DEF) .................................... 450
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 297
Notes ............................................. 451
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Changing bulbs .............................. 139
Display message ............................ 304
Brakes
ABS .................................................. 68
Adaptive Brake Assist ...................... 72
BAS .................................................. 69
BAS PLUS ........................................ 69
Brake fluid (notes) ......................... 451
Display message ............................ 291
High-performance brake system .... 196
Important safety notes .................. 194
Maintenance .................................. 195
Parking brake ................................ 190
Riding tips ...................................... 194
Warning lamp ................................. 326 Breakdown
Where will I find...? ........................ 386
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 35
Bulbs
see Replacing bulbs
C California
Important notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Car
see Vehicle
Car key
see SmartKey
Care
360° camera ................................. 380
Car wash ........................................ 376
Carpets .......................................... 384
Display ........................................... 381
Exhaust pipe .................................. 381
Exterior lights ................................ 379
Gear or selector lever .................... 382
Interior ........................................... 381
Matte finish ................................... 378
Night View Assist Plus ................... 382
Notes ............................................. 375
Paint .............................................. 378
Plastic trim .................................... 382
Power washer ................................ 377
Rear view camera .......................... 380
Roof lining ...................................... 384
Seat belt ........................................ 383
Seat cover ..................................... 383
Sensors ......................................... 380
Side running board ........................ 380
Steering wheel ............................... 382
Trim pieces .................................... 382
Washing by hand ........................... 377
Wheels ........................................... 379
Windows ........................................ 379
Wiper blades .................................. 379
Wooden trim .................................. 3826
Index

Exit position (3rd row of seats) ...... 116
Folding down/up (third row of
seats) ............................................. 113
Folding the 2nd row of seats
forward electrically ........................ 117
Folding the 2nd row of seats
forward manually ........................... 115
Folding the rear bench seat for-
wards/back ................................... 344
Important safety notes .................. 109
Overview ........................................ 109
Seat heating problem .................... 120
Seat ventilation problem ................ 121
Storing settings (memory func-
tion) ............................................... 127
Switching seat heating on/off ....... 118
Switching seat ventilation on/off .. 120
Section
Sliding sunroof ............................... 102
Selector lever
Cleaning ......................................... 382
Sensors (cleaning instructions) ....... 380
Service menu (on-board com-
puter) .................................................. 283
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 451
Coolant (engine) ............................ 452
DEF special additives ..................... 450
Engine oil ....................................... 450
Fuel ................................................ 447
Important safety notes .................. 447
Refrigerant (air-conditioning sys-
tem) ............................................... 453
Washer fluid ................................... 453
Setting the air distribution ............... 156
Setting the airflow ............................ 156
Settings
Factory (on-board computer) ......... 286
On-board computer ....................... 283
SETUP (on-board computer) ............. 287
Side impact air bag ............................. 52
Side marker lamp (display mes-
sage) ................................................... 305
Side windows
Cleaning ......................................... 379 Convenience closing feature ............ 99
Convenience opening feature .......... 99
Hinged side windows ....................... 98
Important safety information ........... 97
Opening/ closing .............................. 98
Overvie w .......................................... 97
Problem (malfunction) ................... 102
Resetting ....................................... 100
Reversing feature ............................. 98
Sliding sunroof
Important safety notes .................. 102
Opening/closing ............................ 103
Problem (malfunction) ................... 106
Resetting ....................................... 104
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 85
Changing the programming ............. 84
Checking the battery ....................... 85
Convenience closing feature .......... 100
Convenience opening feature .......... 99
Display message ............................ 323
Door central locking/unlocking ....... 82
Important safety notes .................... 82
KEYLESS-GO start function .............. 84
Loss ................................................. 87
Mechanical key ................................ 84
Overview .......................................... 82
Positions (ignition lock) ................. 165
Problem (malfunction) ..................... 87
Starting the engine ........................ 167
Snow chains
Information .................................... 407
Snow drive program ....................... 255
Sockets
Center console .............................. 353
General notes ................................ 353
Luggage compartment ................... 354
Rear compartment ......................... 353
Special seat belt retractor .................. 61
Specialist workshop ............................ 29
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 277
In the Instrument cluster ................. 35
Segments ...................................... 27218
Index

You must open the service flap in the cargo
compartment before you can change the
bulbs in the brake lamp. X
To open: release service flap C at the top,
e.g. with a screwdriver, and swing it down-
ward in the direction of the arrow. X
Right side: remove the first-aid kit before-
hand and pull the parcel net down. X
To close: reinsert service flap C .
Brake lamp X
Switch off the lights. X
Open the cargo compartment. X
Open the service flap ( Y
page 138).X
Turn bulb holder C counter-clockwise and
remove it. X
Take bulb out of bulb holder C .X
Insert the new bulb into bulb holder C .X
Insert bulb holder C into the lamp and turn
it clockwise. X
Close the service flap ( Y
page 138).
Windshield wipers
Switching the windshield wipers
on/off
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when
the windshield is dry. If it is necessary to switch on the windshield
wipers in dry weather conditions, always
use washer fluid when operating the wind-
shield wipers.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washing the vehicle in an automatic
car wash.
! Intermittent wiping with rain sensor: due
to optical influences and the windshield
becoming dirty in dry weather conditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratch the
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather.
Combination switch
G
? Windshield wiper offH
b Intermittent wipe, low (rain sensor
set to low sensitivity) I
c Intermittent wipe, high (rain sensor
set to high sensitivity) J

Heavy and light loads
G WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately.
Drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
Wet roads If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You then have to depress the brake pedal
more firmly. Maintain a greater distance from
the vehicle in front.
After driving on a wet road or having the vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm up
the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue may form on the brake discs and
brake pads. This can result in a significantly
longer braking distance. R
Brake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so. R
Carefully depress the brake pedal and the
beginning and end of a journey. R
Maintain a greater distance to the vehicle
ahead.
Servicing the brakes
! If the red brake warning lamp lights up in
the instrument cluster and you hear a warn-
ing tone while the engine is running, the
brake fluid level may be too low. Observe
additional warning messages in the multi-
function display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. This work should be carried out at a
qualified specialist workshop.
! A function or performance test should
only be carried out on a 2-axle dynamom-
eter. If you are planning to have the vehicle
tested on such a dynamometer, contact an
authorized Mercedes-Benz Center to
obtain further information first. Otherwise,
you could damage the drive train or the
brake system.
! Because ESP ®
is an automatic system,
the engine and ignition must be switched
off (SmartKey in position 0 or 1 or Start/
Stop button in position 0 or 1 ) when the
electric parking brake is being tested on a
brake dynamometer (maximum
10 seconds).
Braking triggered automatically by ESP ®
may seriously damage the brake system.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop. Consult a qualified
specialist workshop to arrange this.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop. Driving tips 195
Driving and parking Z

If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals. To do
so, depress the brake pedal firmly when driv-
ing at a high speed. This improves the grip of
the brake pads.
You can find a description of Brake Assist
(BAS) on ( Y
page 69) or of BAS PLUS on
( Y
page 69).
Mercedes-Benz recommends that you only
have brake pads/linings installed on your
vehicle which have been approved for
Mercedes-Benz vehicles or which correspond
to an equivalent quality standard. Brake
pads/linings which have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle's operating safety.
Mercedes-Benz recommends that you only
use brake fluid that has been specially
approved for your vehicle by Mercedes-Benz,
or which corresponds to an equivalent quality
standard. Brake fluid which has not been
approved for Mercedes-Benz vehicles or
which is not of an equivalent quality could
affect your vehicle's operating safety.
High-performance brake system
(Mercedes-AMG vehicles)
The high-performance brake system is
designed for heavy loads. This may lead to
noise when braking. This will depend on: R
Speed R
Braking force R
Environmental conditions, such as temper-
ature and humidity
The wear of individual components of the
brake system, such as the brake pads/linings
or brake discs, depends on the individual driv-
ing style and operating conditions.
For this reason, it is impossible to state a
mileage that will be valid under all circum-
stances. An aggressive driving style will lead
to high wear. You can obtain further informa- tion about this from your authorized
Mercedes-Benz Center.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal. Keep this in mind, and adapt
your driving and braking accordingly during
this break-in period.
Excessive heavy braking results in corre-
spondingly high brake wear. Observe the
& brake wear warning lamp in the instru-
ment cluster and note any brake status mes-
sages in the multifunction display. Especially
for high performance driving, it is important to
maintain and have the brake system checked
regularly.
Driving on wet roads
Hydroplaning If water has accumulated to a certain depth
on the road surface, there is a danger of
hydroplaning occurring, even if: R
you drive at low speeds. R
the tires have adequate tread depth.
For this reason, in the event of heavy rain or in
conditions in which hydroplaning may occur,
you must drive in the following manner: R
lower your speed. R
avoid ruts. R
avoid sudden steering movements. R
brake carefully.
Driving on flooded roads
! Do not drive through flooded areas.
Check the depth of any water before driving
through it. Drive slowly through standing
water. Otherwise, water may enter the
vehicle interior or the engine compartment.
This can damage the electronic compo-
nents in the engine or the automatic trans-
mission. Water can also be drawn in by the196
Driving tips
Driving and parking

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

Safety systems Problem
Possible causes/consequences and P Solutions
' (USA only)
The red brake system
warning lamp comes on
while the engine is run-
ning.
A warning tone also
sounds. G WARNING
The brake boosting effect is malfunctioning and the braking char-
acteristics may be affected.
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 189).X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction
display.
There is not enough brake fluid in the brake fluid reservoir.
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 189).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.326
Warning and indicator lamps in the instrument cluster
On-board computer and displays

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

The engine oils are matched to the perform-
ance of Mercedes-Benz engines and service
intervals. You should therefore only use
engine oils and oil filters that are approved for
vehicles with maintenance systems.
For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Cen-
ter. Or visit the website
http://bevo.mercedes-benz.com.
The table shows which engine oils have been
approved for your vehicle.
Gasoline engines MB Approval
All models
229.5
Diesel engines MB Approval
GL 350 Blue-
TEC 4MATIC 228.51,
229.31,
229.51, 229.52
Mercedes-AMG vehicles: use only
SAE 0W-40 or SAE 5W-40 engine oils.
i MB approval is indicated on the oil con-
tainers.
Filling capacities
The following values refer to an oil change
including the oil filter.
Missing values were not available at time of
going to print.
Model Capacity
GL 350 Blue-
TEC 4MATIC 8.5 US qt (8.0 l)
GL 450
GL 450 4MATIC 7.4 US qt (7.0 l)
GL 550 4MATIC
9.0 US qt (8.5 l)
Mercedes ‑ AMG
vehicles Additives
! Do not use any additives in the engine oil.
This could damage the engine.
Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity,
this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE classification
(viscosity) suitable for the prevailing outside
temperatures. The table shows you which
SAE classifications are to be used. The low-
temperature characteristics of engine oils
can deteriorate significantly, e.g. as a result
of aging, soot and fuel deposits. It is therefore
strongly recommended that you carry out reg-
ular oil changes using an approved engine oil
with the appropriate SAE classification.
Brake fluid
G WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.Service products and filling capacities 451
Technical data Z

Comp ly wit h the important safety notes for
service products when han dlin g brake fluid
( Y
page 447).
The brake fluid change intervals can be found
in the Maintenance Booklet.
On ly use brake fluid appr oved by Mercedes-
Benz according to MB Approval 331.0.
In formation about approved brake fluid can
be obtained at any qualif ied specialist work-
shop or on the In ternet at
http:/ /be vo.mercedes-benz.co m.
i Have the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Coolant
Important safety notes
G WARNING
If antifreeze comes into contact with hot com-
ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. Make sure that antifreeze is not spilled
next to the filler neck. Thoroughly clean the
antifreeze from components before starting
the engine.
! Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
Further information on coolants can be
found in the Mercedes-Benz Specifications
for Service Products, MB BeVo 310.1, e.g.
on the Internet at
http://bevo.mercedes-benz.com. Or con-
tact a qualified specialist workshop.
! Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating. i Have the coolant regularly replaced at a
qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Comply with the important safety precautions
for service products when handling coolant
( Y
page 447).
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks: R
corrosion protection R
antifreeze protection R
raising the boiling point
If the coolant has antifreeze protection down
to -35 ‡( -37 †), the boiling point of the cool-
ant during operation is approximately 266 ‡
(130 †).
The antifreeze/corrosion inhibitor concentra
-
tio n in the engine cooling system should: R
be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †). R
not exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Other wise, heat
will not be dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accord-
ance with MB Specifications for Service Prod-
ucts 310.1.
i When the vehicle is first delivered, it is fil-
led with a coolant mixture that ensures
adequate antifreeze and corrosion protec-
tion.
i The coolant is checked with every main-
tenance interval at a qualified specialist
workshop.452
Service products and filling capacities
Technical data