ad blue MERCEDES-BENZ GL-Class 2016 X166 Owner's Manual

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without written permission from Daimler AG.
Vehicle manufacturer
Daimler AG
Mercedesstraße 137
70327 Stuttgart
Germany
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In this Operator's Manual you will find the fol-
lowing symbols:
GWARNING
Warning notes make you aware of dangers
which could pose a threat to your health or
life, or to the health and life of others.
HEnvironmental note
Environmental notes provide you with infor-
mation on environmentally aware actions or
disposal.
!Notes on material damage alert you to
dangers that could lead to damage to your
vehicle.
iPractical tips or further information that
could be helpful to you. X
This symbol indicates an instruction
that must be followed.
X Several of these symbols in succes-
sion indicate an instruction with sev-
eral steps.
(Y
page) This symbol tells you where you can
find more information about a topic.
YY This symbol indicates a warning or an
instruction that is continued on the
next page.
Dis‐
play
This text indicates a message in the
multifunction/COMAND/Audio dis-
play.
As at 16.09.2014

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
CaliforniaImportant 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 .................................. 382
6Index

Problems with the seat heating
ProblemPossible causes/consequences andMSolutions
The seat heating has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many electrical con-
sumers are switched on.
XSwitch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 165).
XTo switch on: press button:repeatedly
until the desired ventilation level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
ventilation may switch off.
iYou can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (
Ypage 99). The seat ven-
tilation of the driver's seat automatically
switches to the highest level.
120Seats
Seats, steering wheel and mirrors

XTo switch on:turn the light switch to T.
The green Tindicator lamp in the instru-
ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures the
corresponding side of the vehicle is illumina-
ted.
XTo switch on the standing lamps: the
SmartKey is not in the ignition lock or it is in
position 0.
XTurn the light switch to W(left-hand side
of the vehicle) or X(right-hand side of
the vehicle).
Vehicles towing a trailer: both the right and
left standing lamps (tail lamps) are always
illuminated on the trailer.
Combination switch
Turn signal
:High-beam headlamps
;Turn signal, right
=High-beam flasher
?Turn signal, left
XTo indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
XTo indicate: press the combination switch
beyond the pressure point in the direction
of arrow ;or?.
High-beam headlamps
XTo switch on manually: turn the Smart-
Key to position 2in the ignition lock or start
the engine.
XVehicles without Adaptive Highbeam
Assist: turn the light switch to Lor
Ã.
XVehicles with Adaptive Highbeam Assist:
turn the light switch to L.
XPress the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the high-beam head-
lamps are only switched on when it is dark
and the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the high-beam
headlamps are switched on.
XTo deactivate: move the combination
switch back to its normal position.
The blue Kindicator lamp in the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active, it
automatically controls activation of the high-
beam headlamps (
Ypage 134).
High-beam flasher
XTo switch on: turn the SmartKey in the
ignition lock to position 1or 2, or start the
engine.
XPull the combination switch in the direction of arrow =.
132Exterior lighting
Lights and windshield wiper s

DEF (BlueTECvehicles only )
Important notes on us e
To function properly, BlueTE Cexhaus tgas
aftertreatmen tmus tbe operated wit hth e
reducing agen tDEF. Addin gDE Fis on eof th e
task sperformed durin gmaintenance .Under
normal operatin gconditions, atank of DE F
last suntil th enext servic edue date.
Whe nth esupply of DE Fis almost used up, th e
Check
AdditiveSeeOperator' sManual
message is shown in th emultifunction dis -
play.
If you drive th evehicle faste rthan 10 mph
(16 km/h), th eCheck
AdditiveSeeOper‐
ator's Manualmessage goe sout after
approximately on eminute.
Whe nth esupply of DE Fis down to areserv e
of approximately 1gal (3. 8l) th eRefill
DEF See Operator' sManualmessage is
shown in th emultifunction display.
Whe nth eDE Fsupply drops to aminimum ,th e
Remaining Starts :16
message is shown
in th emultifunction display.
If th eRefill DEF No Start in XXX Xkm
message is shown in th emultifunction dis -
play, you can still drive th evehicle over th e
distanc eshown .If DE Fis no trefilled ,you will
subsequently be unable to startth eengine.
If th eRefill DEF Eng .Start Not Poss.
message appears in th emultifunction display
and th eengin edoe sno tstart ,you mus tadd
DEF.
XAd dat leas t 1gal (3.8 l)of DEF.
XSwitch on the ignition for at least 60 sec-
onds.
XStart the engine.
iHave the DEF tank refilled at a qualified
specialist workshop.
Use the special DEF refill bottle when adding
DEF between maintenance intervals. Contact
an authorized Mercedes-Benz Center with
any questions or, if necessary, contact Road-
side Assistance (
Ypage 26). If the outside temperature is below 12 ‡
(Ò11 †) it may be difficult to top up. If DEF is
frozen and there is an active warning indica-
tor, it may not be possible to add DEF. Park
the vehicle in a warmer place, e.g. in a garage,
until DEF has become fluid again. It will then
be possible to add DEF again. Alternatively,
have the DEF tank refilled at a qualified spe-
cialist workshop.
Further information about BlueTEC exhaust
gas aftertreatment and DEF is available at any
authorized Mercedes-Benz Center.
Important safety notes
DEF is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
Rnot poisonous
Rcolorless and odorless
Rnot flammable
When you open the DEF container, small
amounts of ammonia vapor may be released.
Ammonia vapors have a pungent odor and are
particularly irritating to the skin, to mucous
membranes and to the eyes. You may expe-
rience a burning sensation in your eyes, nose
and throat. Coughing and watering of the
eyes are possible.
Do not inhale ammonia vapors. Fill the DEF
tank only in well-ventilated areas.
DEF must not come into contact with your
skin, eyes or clothing and must not be swal-
lowed. Keep DEF away from children.
If you or other persons come into contact with
DEF, observe the following:
RRinse DEF from your skin immediately with
soap and water.
RIf DEF comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
RIf DEF has been swallowed, rinse your
mouth out immediately. Drink plenty of
186Refueling
Driving and parking

water. Seek medical assistance without
delay.
RChange out of clothing contaminated with
DEF immediately.
!Only use DEF in accordance with
ISO 22241. Do not mix any additives with
DEF, and do not dilute DEF with water. This
may destroy the BlueTEC exhaust gas after-
treatment system.
!The vehicle must be parked on level
ground to fill the DEF tank. The DEF tank
can only be filled as intended with the vehi-
cle parked on a level surface. This avoids
false level readings. Filling the tank is not
permitted if the vehicle is not parked on a
level surface. There is a danger of overfill-
ing, which could result in damage to com-
ponents of the BlueTEC exhaust gas after-
treatment.
!Rinse surfaces that have come into con-
tact with DEF immediately with water or
remove DEF using a damp cloth and cold
water. If the DEF has already crystallized,
use a sponge and cold water to clean it. DEF
residues crystallize after time and contam-
inate the affected surfaces.
!DEF is not a fuel additive and must not be
added to the fuel tank. If DEF is added to
the fuel tank, this can lead to engine dam-
age.
For further information on DEF, see
(
Ypage 450).
Opening the DEF filler cap
The fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the SmartKey or with KEYLESS-GO.
XSwitch the ignition off.
XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
XTurn blue DEF fuel filler cap ;counter-
clockwise and remove it.
DEF filler cap ;is secured with a plastic
strip.
DEF refill canisters
!Do not tighten the disposable hose with
too much force. The disposable hose may
otherwise be destroyed.
XUnscrew the cap from the opening on top of
DEF refill canister ;.
XPlace disposable hose :on the opening of
DEF refill canister ;and screw it on clock-
wise until hand-tight.
Refueling187
Driving and parking
Z

When driving on steep gradients, the
engine oil level must be sufficiently high to
ensure a correct oil supply in the vehicle.
XDEF tank (BlueTEC vehicles):check the
level and add if necessary (
Ypage 186).
XTire-changing tool kit: check that the jack
is working and make sure you have the lug
wrench, a robust tow cable and a folding
spade in the vehicle.
XWheels and tires: check the tire tread
depth and tire pressure.
XCheck for damage and remove any foreign
objects, e.g. small stones, from the
wheels/tires.
XReplace any missing valve caps.
XReplace dented or damaged wheels.
XRims: dented or bent rims can result in a
loss of tire pressure and damage the tire
bead. Before driving off-road, check the
wheels and replace them if necessary.
Checklist after driving off-road
!If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Driving over rough terrain places greater
demands on your vehicle than driving on nor-
mal roads. After driving off-road, check the
vehicle. This allows you to detect damage
promptly and reduce the risk of an accident to
yourself and other road users.
XVehicles with the ON&OFFROAD pack-
age: activate the on-road program
(
Ypage 258).
XDeactivate the LOW RANGE off-road gear
(
Ypage 259).
XDeactivate DSR (Ypage 257).
XLower the vehicle level again to a level suit- able to the road conditions, e.g. to the high-
way level.
XClean the headlamps and rear lights and
check for damage.
XClean the front and rear license plates.
XClean the wheels and tires with a water jetand remove any foreign objects.
XClean the wheels, wheel housings and the
vehicle underside with a water jet; check
for any foreign objects and damage.
XCheck whether twigs or other parts of
plants have become trapped. These
increase the risk of fire and can damage
fuel pipes, brake hoses or the rubber bel-
lows of the axle joints and propeller shafts.
XAfter the trip, examine without fail the
entire undercarriage, wheels, tires, brakes,
bodywork structure, steering, chassis and
exhaust system for damage.
XAfter driving for extended periods across
sand, mud, gravel, water or in similarly dirty
conditions, have the brake discs, wheels,
brake pads/linings and axle joints checked
and cleaned.
XIf you detect strong vibrations after off-road travel, check for foreign objects in the
wheels and drive train and remove them if
necessary. Foreign objects can disturb the
balance and cause vibrations.
Driving on sand
Observe the following rules when driving on
sand:
RVehicles with the ON&OFFROAD pack-
age: select off-road program 1
(
Ypage 258).
RSelect a higher vehicle level.
RAvoid high engine speeds.
RUse the left-hand steering wheel paddle
shifter to shift to a lower gear appropriate
to the terrain.
200Driving tips
Driving and parking

to traffic conditions and operate the equip-
ment when the vehicle is stationary.
When telephoning, you must observe the
legal requirements for the country in which
you are currently driving.
XSwitch on the mobile phone (see the man-
ufacturer’s operating instructions).
XSwitch on COMAND (see the separate
operating instructions).
XEstablish a Bluetooth®connection to
COMAND, see the separate operating
instructions.
XPress the =or; button on the steer-
ing wheel to select the Tel
menu.
You will see one of the following display mes-
sages in the multifunction display:
RTelephone READYor the name of the net-
work provider: the mobile phone has found
a network and is ready to receive.
RTelephone No service: there is no net-
work available or the mobile phone is
searching for a network.
Accepting a call
XPress the 6button on the steering
wheel to accept an incoming call.
If someone calls you when you are in the Tel
menu, a display message appears in the mul-
tifunction display.
You can accept a call even if you are not in the
Tel
menu.
Rejecting or ending a call
You can end or reject a call even if you are not
in the Tel
menu.
XPress the ~button on the steering
wheel to reject or end a call.
Selecting an entry from the telephone
book
XPress the =or; button on the steer-
ing wheel to select the Tel
menu.
XPress the9,:ora button to
switch to the phone book.
XAuthorize access to the phone book on the
phone.
XPress the 9or: button to select the
desired name.
or
XTo start rapid scrolling: press and hold
the 9 or: button for longer than
one second.
Rapid scrolling stops when you release the
button or reach the end of the list.
XIf only one telephone number is stored
for a name: press the6ora button
to start dialing.
or
XIf there is more than one number for a
particular name: press the6ora
button to display the numbers.
XPress the 9or: button to select the
number you want to dial.
XPress the 6ora button to start dial-
ing.
or
XTo exit the telephone book: press the
~ or% button.
Redialing
The on-board computer saves the last names
or numbers dialed in the redial memory.
XPress the =or; button on the steer-
ing wheel to select the Tel
menu.
XPress the6button to switch to the
redial memory.
XPress the 9or: button to select the
desired name or number.
280Menus and submenus
On-board computer and displays

XPressato confirm.
The Reset All Settings?
message
appears.
XPress the :or9 button to select No
orYes.
XPress ato confirm the selection.
If you select Yes
, the multifunction display
shows a confirmation message.
For safety reasons, the Daytime Running
Lightsfunction in theLightssubmenu is
only reset if the vehicle is stationary.
ON&OFFROAD menu
XPress the =or; button on the steer-
ing wheel to select the ON&OFFROAD
menu.
You can set the current settings to appear in
the ON&OFFROAD
menu:
ROn-road program (Ypage 254)
ROff-road program (Ypage 258)
AMG menu (Mercedes-AMG vehicles)
AMG displays
:Digital speedometer
;Gear indicator
=Upshift indicator
?Engine oil temperature
ACoolant temperature
BTransmission fluid temperature
XPress the =or; button on the steer-
ing wheel to select the AMG
menu.
Upshift indicator: upshift indicatorUP
=
indicates that the engine has reached the
overrevving range when in the manual drive
program.
Engine/transmission oil temperature:
when the engine and transmission are at nor-
mal operating temperature, oil tempera-
ture ?and Bare displayed in white in the
multifunction display.
If the multifunction display shows oil temper-
ature ?orB in blue, the engine or the
transmission are not yet at normal operating
temperature. Avoid driving at full engine out-
put during this time.
SETUP
:Drive program C/S/M
;ESP®mode (ON/OFF)
=Suspension setting COMFORT/SPORT/
SPORT+
SETUP displays the following information/
functions:
Rthe digital speedometer
Rthe gear indicator
Rthe drive program
Rthe ESP®(Electronic Stability Program)
mode
Rthe suspension setting
XPress the =or; button on the steer-
ing wheel to select the AMG
menu.
XPress the9button repeatedly until
SETUP is displayed.
Menus and submenus287
On-board computer and displays
Z

XTurn the SmartKey to position2in the igni-
tion lock.
XTo switch on the cooling function: press
and hold button =until the blue indicator
lamp on the button lights up.
XTo switch on the heating function: press
and hold button =until the red indicator
lamp on the button lights up.
XTo switch off the function: press and hold
button =until the indicator lamp on the
button goes out.
When the heating function is used, the metal
insert of the cup holder is heated. Once a cer-
tain temperature is reached, residual heat
indicator lamp ;lights up. This means that
the metal insert of the cup holder is hot. For
this reason, you must not reach into the cup
holder metal insert.
Do not use hard or sharp objects to clean the
cup holder. Use only a soft cloth to clean it.
Cup holder in the rear seat armrest
!Do not sit on or support your body weight
on the rear seat armrest when it is folded
down, as you could otherwise damage it.
XFold down the rear seat armrest.
Cup holder :is located in the rear seat
armrest.
Cup holder in the third row of seats
:Cup holder
The cup holders are located in the side trim on
the left and right-hand sides.
Sun visors
Overview
GWARNING
If the mirror cover of the vanity mirror is folded
up when the vehicle is in motion, you could be
blinded by incident light. There is a risk of an
accident.
Always keep the mirror cover folded down
while driving.
:Mirror light
;Bracket
=Retaining clip, e.g. for a car park ticket
?Vanity mirror
AMirror cover
350Features
Stowage and features