brake fluid MERCEDES-BENZ GLS SUV 2019 Owners Manual

#
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. #
Remo vecap 1bytheta b. #
Top up thewa sher fluid.
R Further information about thewa sher fluid
(/ page 605) Ke
eping the air-water duct free #
Keep the area between the bonn etand the
windscreen free of deposits, e.g. ice, sn ow
and lea ves. Cleaning and care
Information on
washing theve hicle in a car
wa sh &
WARNING Risk of an accident due to
re duced braking po wer af terwa shing the
ve hicle
Braking ef ficiency is reduced af terwa shing
th eve hicle. #
Afterth eve hicle has been washed,
brake carefully while paying attention to
th e traf fic conditions until braking
po we r has been fully restored. *
NO
TEDama gedue tounsuitable car
wa sh #
Before driving into a car wash make
sure that the car wash is suitable for
th eve hicle dimensions. #
Ensure there is suf ficient ground clear‐
ance between the underbody and the
guide rails of the car wash. #
Ensure that the clearance width of the
car wash, in particular the width of the
guide rails, is suf ficient. To
avo id damage to yourvehicle when using a
car wash, ensure thefo llowing beforehand:
R Active Dis tance Assi stDISTRONIC and the
HOLD function are deactivated.
R the 360° Camera or there ve rsing camera is
switched off.
R the side windo wsand sliding sun roof are
comple tely closed.
R the outside mir rors are folded in.
R the blo werfo rth eve ntilation/heating is
switched off. 538
Maintenance and care

Note
s on paint work/matt finish paint workcare Obser
vethefo llowing information: Cleaning and car
eA voiding paintwork damage and inter fere nce tothe
dr iver assistance sy stems
Pa intwork R
Insect remains: soak with insect remo ver and rinse off the
trea ted areas af terw ards.
R Bird droppings: soak with water and rinse off af terw ards.
R Tree resin, oils, fuels and greases: remo veby rubbing gen‐
tly wi tha clo thsoaked in petroleum ether or lighter fluid.
R Coolant and brake fluid: remo vewith a damp clo thand
clean water.
R Tarst ains: use tarre mo ver.
R Wax: use silicone remo ver. R
Do not attach sticke rs,fi lms or similar materials. Only
ha ve film attached tothe bumper at a qualified specialist
wo rkshop.
R Remo vedirt immediately, where possible. 542
Maintenance and care

Operating
fluids include thefo llowing:
R fuels
R DeNOx agent AdBlue ®
forex haust gas af ter‐
treatment
R lubri cants
R coolant
R brake fluid
R windsc reen washer fluid
R climate cont rol sy stem refrigerant
Only use products app rove dby Mercedes-Benz.
Damage caused bythe use of products that ha ve
not been appr oved is not co veredby the
Mercedes-Benz warranty or goodwill gestures.
Yo u can identify operating fluids appr ovedby
Mercedes-Benz bythefo llowing insc ript ions on
th e conta iner:
R MB- Freigabe (e.g. MB-Fr eigabe 229.51 )
R MB-Appr oval (e.g. MB-App rova l 229.51) Fu
rther information on appr oved operating fluids
is available at thefo llowing locations:
R inthe Mercedes-Benz Specifications for
Operating Fluids byentering the designation
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo App
R at a qualified specialist workshop &
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. #
Fire, naked flames, smoking and crea‐
tion of spar ksmust be avoided. #
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fuelling theve hicle. &
WARNING Risk of inju ryfrom fuels
Fu els are poisonous and hazardous to your
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed du ring
th ere fuelling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediately rinse fuel off your skin with
soap and water. #
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. #
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. #
Change immediately out of clo thing that
has come into con tact wi thfuel. 598
Tech nical da ta

#
Do not al terth e engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil rene we d at regular
inter vals. Mercedes-Benz
recommends that you ha vethe
oil change car ried out at a qualified specialist
wo rkshop.
Only Mercedes-Benz appr oved engine oils may
be used in Mercedes-Benz engines.
Fu rther information on engine oil and oil filters is
av ailable at thefo llowing locations:
R inthe Mercedes-Benz Specifications for
Operating Fluids byentering the designation
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop
Pet rol engines: for cer tain countries, dif fere nt
engine oils can be used in conjunction wi th
re duced maintenance inter vals. %
Further information on dif fere nt engine oils
can be ob tained at a qualified specialist
wo rkshop.
Quality and capacity of engine oil
MB-F reigabe or MB-Appr oval Pe
trol engine sM B-Freigabe or MB-
Appr oval
GLS 450 4MATIC 229.5 1,229.52,
229.6 1,229.71
All other models 229.52, 229.61 MB-F
reigabe or MB-Appr oval Diesel engine
sMB-Freigabe or MB-
Appr oval
All models 229.52, 229.61 If
th e engine oils lis ted in theta ble are not avail‐
able, you may add a maximum of 1.0 litr e ofthe
fo llowing engine oils once only:
R petrol engines: -
MB- Freigabe or MB-Appr oval 229.3 or
AC EA A3/B3
R diesel engines:
- MB-F reigabe or MB-Appr oval 229.3,
229.5 or ACEA C3
The following values referto an oil change,
including the oil filter.
Re placement amount Mode
lR eplacement
amount
GLS 580 4MATIC 9.5 litres
All other models 9.0 litres Note
s on brake fluid Obser
vethe no tes on operating fluids
(/ page 597). Te
ch nical da ta603

&
WARNING Risk of an accident due to
va pour poc kets form ing in the brake sys‐
tem
The brake fluid constantly absorbs moisture
from the air. This lo wersthe boiling point of
th e brake fluid. If the boiling point is too lo w,
va pour poc kets may form inthe brake sys‐
te m when the brakes are applied hard.
This impairs the braking ef fect. #
Have the brake fluid rene we d at the
specified inter vals. Ha
ve the brake fluid regularly replaced at a
qu alified specialist workshop.
Only use brake fluid appr ovedby Mercedes-Benz
according toMB-F reigabe or MB-Appr oval 33 1.0.
Yo u can obtain fur ther information on brake fluid
in thefo llowing places:
R inthe Mercedes-Benz Specifications for
Operating Fluids
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo App
R at a qualified specialist workshop Coolant
Note
s on coolant
Obser vethe no tes on operating fluids
(/ page 597). &
WARNING Risk offire ‑ and inju ryfrom
antifreeze
If antifreeze comes into contact with hot
component parts in the engine compart‐
ment, it may ignite. #
Allow the engine tocool down before
yo uto p up the antif reeze. #
Make sure that no antifreeze spills out
next tothefiller opening. #
Thoroughly clean the antif reeze from
component parts before starting the
ve hicle. *
NO
TEDama gecaused byincor rect cool‐
ant #
Only add coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction.
Information on coolant is available at thefo l‐
lowing locations:
R inthe Mercedes-Benz Specification for
Operating Fluids 310.1
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop *
NO
TEOverheating at high outside tem‐
peratures If an inapp
ropriate coolant is used, the
engine cooling sy stem is not suf ficiently pro‐
te cted against overheating and cor rosion at
high outside temp eratures. #
Alw ays use coolant appr ovedby
Mercedes-Benz. 604
Tech nical da ta

Display messages
Possible causes/consequences and M
MSolutions
If it is still not possible torelease the electric parking brake: #
Do not continue driving under any circums tances. Consult a qualified specialist workshop.
J
Check brake fluid level *T
here is insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Do not top up the brake fluid. #
Consult a qualified specialist workshop.
Check brake pads See
Owner's Manual *T
he brake pads ha vereached thewe ar limit. &
WARNING Risk of accident due torestricted braking po wer
When the brake pads ha vereached their wear limit, the braking po wer may be restricted. Display messages and
warning/indicator lamps 619

Saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
J Brake sy stem warning lamp
(yellow) The
yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and continue todrive carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, please obse rve it. #
Consult a qualified specialist workshop.
J Brake sy stem warning lamp
(red) The
red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in emergency braking situations. 666
Display messa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop in a safe location immediately. Do not continue driving! #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. Display messages and
warning/indicator lamps 667

Blo
wer
see Climate control
BlueTEC see AdBlue ®
Blue tooth ®
................................................ 391
Information .......................................... 390
Setting up an Internet connection ....... 488
Switching on/off ................................. 391
Boot lid see Tailgate
Brac ket
MBUX rear tablet ................................ .521
Brake Assi stSystem
see BAS (Brake Assi stSystem)
Brake fluid Notes .................................................. 603
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 235
Brakes ABS (Anti-lock Braking Sy stem) ........... 229
Ac tive Brake Assi st.............................. 235
Ad aptive brake lights .......................... .241 BA
S (Brake Assi stSystem) .................. 229
Driving tips .......................................... 19 3
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 235
HOLD function .....................................2 60
Limi ted braking ef fect (salt-trea ted
ro ads) .................................................. 19 3
New/replaced brakepads/brake
discs .................................................... 19 3
Ru nning-in no tes ..................................1 93
Braking assi stance
see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 18
To w- starting ........................................ 566
To wing away ........................................ 563
Tr ansporting theve hicle ......................5 64
Wheel change ...................................... 584
Breakdown see Flat tyre
Bu rm ester ®
high-end 3D sur round
sound sy stem
Ad justing the balance/fader ................5 18
Ad justing the sound optimisation ........ 51 8Ad
justing treble, mid-range and bass
settings ................................................ 51 8
Au tomatic volume adjustment ............ .518
Calling up the sound menu .................. 51 8
Information ..........................................5 17
Selecting the sound profile .................. 519
Burmes ter®
sur round sound sy stem .....5 16
Ad justing the balance/fader ................5 17
Ad justing the sound focus .................... 517
Ad justing treble, mid-range and bass
settings ................................................ 516
Au tomatic volume adjustment ............ .517
Calling up the sound menu .................. 516
Information .......................................... 516
Selecting the sound profile .................. 517
Buttons Steering wheel .................................... 320 C
Call list Deleting ............................................... 466
Making a call ....................................... 465
Overview ............................................. 465
Selecting options ................................ 465
Selecting options for suggestions ........ 465 684
Index

¯Ad
Blue system fault Perf.
re duced in XXX miles See Owner's
Manual ................................................ 646
¯ AdBlue sy stem fault Perf.
re duced: XXX km/h Nostart in XXX
km ...................................................... .646
¯ AdBlue sy stem fault See Own‐
er's Manual ........................................ .646
4Ad d 1 litre engine oil when next
re fuelling ............................................. 642
Anti-theft alarm sy stem Malfunction ... 660
Apply brake todeselect Park (P)
position ...............................................6 47
App lybrake toselect R ........................ 648
À ATTENTION ASSIST inoperative ... 625
ÀAT TENTION ASSIS T:Take a
break! .................................................. 625
bAu tomatic driving lights inoper‐
ative .................................................... 663
Au xilia rybattery malfunction ..............649Beginning eme
rgency stop .................. 628
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 630
Blind Spot Assist inope rative ............... 630
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...6 30
Cannot start engine See Owner's
Manual ................................................ 639
ÁChan gekey bat teries .................. 655
JCheck brake fluid le vel................ .619
Check brake pads See Owner's Man‐
ual ........................................................ 61 9
ï Check trailer hit chlock (white
display message) ................................ .657
Check tyre pressures then restart
Ru n Flat Indicator ................................ 651
hCheck tyre(s) ............................... 652
!Clean the fuel filter ...................... 640
Á Compressor is cooling ................ 629?Coolant
Stop vehicle Switch
engine off ............................................ 637
Cruise contro l and Limiter inope ra‐
tive ...................................................... 635
Cruise control inope rative ................... 635
Cruise control off ................................ 635
_Cur rently una vailable Camera
view restricted ..................................... 633
çCu rrently unavailable Radar
sensors dirty .......................................6 32
!cur rently una vailable See Own‐
er's Manual .......................................... 612
÷ currently una vailable See Own‐
er's Manual .......................................... 61 3
Drive sy stem Malfunction Stop
Switch engine off ................................. 641
Drive sy stem Malfunction Visit work‐
shop ..................................................... 641
5 Engine oil le vel cannot be
measured ............................................ 644690
Index