oil cap MERCEDES-BENZ GL-Class 2014 X166 Owner's Manual

Symmetrical low beam
..................128
Tire ruts ......................................... 199
Towing a trailer .............................. 264
Traveling uphill ............................... 200
Wet road surface ........................... 194
DSR (Downhill Speed Regulation)
Display message ............................ 312
Function/notes ............................. 256
DVD audio
Operating (on-board computer) .....278
DVD video
Operating (on-board computer) .....279 E
EASY-ENTRY feature Activating/deactivating .................285
Function/notes ............................. 121
EASY-EXIT feature
Crash-responsive ........................... 122
Function/notes ............................. 121
Switching on/off ........................... 285
EBD (electronic brake force
distribution)
Display message ............................ 293
Function/notes ................................ 74
ECO display
Function/notes ............................. 192
On-board computer .......................276
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency release
Driver's door .................................... 88
Vehicle ............................................. 88
Emergency spare wheel
General notes ................................ 439
Important safety notes ..................439
Removing ....................................... 440
Storage location ............................ 440
Technical data ............................... 441
Emergency Tensioning Devices
Function .......................................... .59
Safety guideline s............................. 43
Emergency unlocking
Tailgate ............................................ 93
Emissions control
Service and warranty information ....24 Engine
Check Engine warning lamp ........... 333
Display message ............................ 306
Engine number ...................... 444, 445
Irregular running ............................ 172
Jump-starting ................................. 395
Starting problems ..........................172
Starting the engine with the
SmartKey ....................................... 169
Starting with KEYLESS-GO .............170
Switching off .................................. 189
Tow-starting (vehicle) ..................... 400
Engine electronics
Problem (malfunction) ...................172
Engine jump starting
see Jump starting (engine)
Engine oil
Adding ........................................... 372
Additives ........................................ 450
Checking the oil level ..................... 371
Checking the oil level using the
dipstick .......................................... 371
Display message ............................ 308
Filling capacity ............................... 449
Notes about oil grades ................... 449
Notes on oil level/consumption ....371
Temperature (on-board computer) .287
Viscosity ........................................ 450
ESP ®
(Electronic Stability
Program) 4ETS ................................................ 72
AMG menu (on-board computer) ...287
Characteristics ................................. 73
Deactivating/activating ...................73
Display message ............................ 291
Function/notes ................................ 72
General notes .................................. 72
Important safety information ...........72
Trailer stabilization ........................... 74
Warning lamp ................................. 329
Exhaust check ................................... 192
Exhaust pipe (cleaning instructions) 381
Exterior lighting see Lights
Exterior mirrors
Adjusting ....................................... 122
Dipping (automatic) .......................12310
Index

Switching air-recirculation mode
on/off
................................................. 161T
Tachometer ........................................ 273
Tailgate Display message ............................ 321
Emergency unlocking .......................93
Important safety notes ....................89
Limiting the opening angle ...............92
Opening/closing (automatically
from inside) ...................................... 92
Opening/closing (automatically
from outside) ................................... 90
Opening/closing (from outside) .......90
Opening dimensions ......................453
Power closing .................................. 88
Tail lamps
Display message ............................ 304
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 33
Technical data
Capacities ...................................... 445
Emergency spare wheel .................441
Information .................................... 444
Tires/wheels ................................. 432
Trailer loads ................................... 457
Vehicle data ................................... 453
TELEAID
Call priority .................................... 359
Downloading destinations
(COMAND) ..................................... 359
Downloading routes .......................363
Emergency call .............................. 356
Geo fencing ................................... 363
Locating a stolen vehicle ...............362
MB info call button ........................358
Remote vehicle locking ..................361
Roadside Assistance button ..........358
Search & Send ............................... 360
Self-test ......................................... 356
Speed alert .................................... 363
System .......................................... 356
Triggering the vehicle alarm ........... 364 Vehicle remote malfunction
diagnosis
....................................... 362
Vehicle remote unlocking ..............361
Tele Aid
General notes ................................ 355
Telephone
Accepting a call ............................. 279
Display message ............................ 322
Menu (on-board computer) ............279
Number from the phone book ....... .280
Redialing ........................................ 280
Rejecting/ending a call .................279
Temperature
Coolant .......................................... 272
Coolant (on-board computer) ......... 287
Engine oil (on-board computer) ...... 287
Outside temperature ..................... .273
Setting (climate control) ................157
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........77
Immobilizer ...................................... 77
Through-loading ................................ 343
Time see separate operating instructions
Timing (RACETIMER) .........................287
TIREFIT kit .......................................... 388
Tire pressure Calling up (on-board computer) .....412
Checking manually ........................411
Display message ............................ 318
Important safety notes ..................412
Maximum ....................................... 410
Notes ............................................. 409
Not reached (TIREFIT) ....................390
Reached (TIREFIT) ..........................390
Recommended ............................... 408
Tire pressure loss warning
system General notes ................................ 411
Important safety notes ..................411
Restarting ...................................... 412
Tire pressure monitoring system
Checking the tire pressure
electronically ................................. 414
Function/notes ............................. 412
General notes ................................ 412
Important safety notes ..................413
Restarting ...................................... 415 Index
19

R
Always keep the engine running and in gear
when driving on a downhill gradient.
Activate DSR (Y page 256).
R Always keep the doors, tailgate, windows
and sliding sunroof closed while driving.
R Adapt your speed to the terrain. The
rougher, steeper or more ruts on the
terrain, the slower your speed should be.
R Drive slowly and at an even speed through
the water. Ensure that a bow wave does not
form as you drive.
R Drive with extreme care on unfamiliar off-
road routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
R Look out for obstacles, such as rocks,
holes, tree stumps and furrows.
R Check the depth of water before fording
rivers and streams.
R When fording, do not stop and do not
switch off the engine.
R On sand, drive quickly to overcome the
rolling resistance. Otherwise the vehicle's
wheels could become stuck in loose
ground.
R Do not jump with the vehicle as this will
interrupt the vehicle's propulsion.
R Always keep the engine running and in gear
when driving on a slope.
R Do not shift the automatic transmission to
transmission position N.
i Do not use the HOLD function when
driving off-road, on steep uphill or downhill
gradients or on slippery or loose surfaces.
The HOLD function cannot hold the vehicle
on such surfaces.
Checklist before driving off-road !
If the engine oil warning lamp lights up
while the vehicle is in motion, stop the
vehicle in a safe place as soon as possible.
Check the engine oil level. The engine oil
warning lamp warning must not be ignored.
Continuing the journey while the symbol is
displayed could lead to engine damage. X
Engine oil level: check the engine oil level
and add oil if necessary.
When driving on steep gradients, the
engine oil level must be sufficiently high to
ensure a correct oil supply in the vehicle.
X DEF tank (BlueTEC vehicles): check the
level and top up if necessary (Y page 186).
X Tire-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.
X Wheels and tires: check the tire tread
depth and tire pressure.
X Check for damage and remove any foreign
objects, e.g. small stones, from the
wheels/tires.
X Replace any missing valve caps.
X Replace dented or damaged wheels.
X Rims: dented or bent rims can result in a
loss of tire pressure and damage the tire
bead. Therefore, check your rims before
driving off-road and replace them as
required.
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
workshop.
X Vehicles with the ON&OFFROAD
package: activate the on-road program
(Y page 258).
X Deactivate the LOW RANGE off-road gear
(Y page 259).
X Deactivate DSR ( Ypage 256).
X Vehicles with the AIRMATIC package:
lower the vehicle to a ride height suitable
for the road conditions, e.g. to the
highway/high-speed level.
X Clean the headlamps and rear lights and
check for damage.
X Clean the front and rear license plates.
X Clean the wheels/tires with a water jet and
remove any foreign objects. 198
Driving tipsDriving an
d parking

Display messages Possible causes/consequences and
M
MSolutions 4
Check Engine Oil Check Engine Oil
At Next Refueling At Next Refueling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
X
Check the oil level when next refueling, at the latest
(Y page 371).
X If necessary, add engine oil ( Ypage 372).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 4
Check Engine Oil Check Engine Oil
Level Level
(Add
(Add1
1 quart)
quart) AMG vehicles: the engine oil level is too low.
X
Check the oil level when next refueling, at the latest
(Y page 371).
X If necessary, add engine oil ( Ypage 372).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 8
Fuel Level Low Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. C There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station without fail. 8
Gas Cap Loose Gas Cap Loose The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. 308
Display
messagesOn-board computer and displays

Example: engine oil cap
X
Turn cap :counter-clockwise and remove
it.
X Add engine oil.
If the oil level is at or below the MIN mark
on the oil dipstick, add 1.1 US qt (1.0 l) of
engine oil.
X Replace cap :on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X Check the oil level again with the oil
dipstick (Y page 371).
Further information on engine oil
(Y page 449). Additional service products
Checking coolant level G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
X
Park the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 167).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 167).
X Check the coolant temperature gauge in
the multifunction display.
The coolant temperature must be below
158 ‡ (70 †).
X Turn the SmartKey to position
0(Y page 167) in the ignition lock.
X Slowly turn cap :half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar
= in the filler neck when cold, there is
enough coolant in coolant expansion
tank ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar =in the filler
neck when warm, there is enough coolant
in expansion tank ;. Engine compartment
373Maintenance and care Z

X
Remove the cap from valve Con the faulty
tire.
X Screw filler hose Donto valve C.
X Insert connector ?into a 12 V socket in
your vehicle.
Observe the notes on sockets
(Y page 352).
X Turn the SmartKey to position 1in the
ignition lock (Y page 167).
X Press on/off switch =on the tire inflation
compressor to I.
The tire inflation compressor is switched
on. The tire is inflated.
i First, tire sealant is pumped into the tire.
The pressure can briefly rise to
approximately 500 kPa (5 bar/73 psi).
Do not switch off the tire inflation
compressor during this phase.
X Allow the tire inflation compressor to run
for five minutes. The tire should then have
attained a pressure of at least 180 kPa
(1.8 bar/26 psi).
If a tire pressure of 180 kP a(1 .8 ba r/26 psi)
has been attained after five minutes:
(Y page 390).
If a tire pressure of 180 kPa (1.8 ba r/26 psi)
has not been attained after five minutes:
(Y page 390).
i If tire sealant leaks out, allow it to dry. It
can then be removed like a layer of film.
If your clothes are soiled with tire sealant,
have them cleaned with perchloroethylene
at a dry cleaner as soon as possible. Tire pressure not reached If a pressure of 180 kPa
(1.8 ba r/26 psi) has
not been attained after five minutes:
X Switch off the tire inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tire.
X Very slowly drive forwards or reverse
approximately 30 ft (10 m).
X Pump up the tire again.
After a maximum of five minutes the tire
pressure must be at least 180 kPa (1.8 bar/
26 psi). G
WARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a tire
pressure that is too low can significantly
impair the vehicle's braking and driving
characteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached G
WARNING
A tire temporarily sealed with tire sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed
the specified maximum speed with a tire that
has been repaired using tire sealant.
! Residue from the tire sealant may come
out of the filler hose after use. This could
cause stains.
Therefore, place the filler hose in the plastic
bag which contained the TIREFIT kit. H
Environmental note
Have the used tire sealant bottle disposed of
professionally, e.g. at a qualified specialist
workshop. 390
Flat tireBreakdown assistance

Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall
of the tire. This specifies the load-bearing
capacity more precisely.
Curb weight
The weight of a vehicle with standard
equipment including the maximum capacity
of fuel, oil and coolant. It also includes the air-
conditioning system and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage.
Maximum load rating
The maximum tire load is the maximum
permissible weight in kilograms or lbs for
which a tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire.
Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
This is pressure inside the tire applying an
outward force to each square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold. Cold tire pressure
The tires are cold:
R
if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has been driven for less than
1 mile (1.6 km).
Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the curb weight and the weight of
the accessories.
TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall, and thus identify
the purchasers. The TIN is made up of the
manufacturer's identity code, tire size, tire
type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire. 426
All about wheels and tiresWheels and tires

VIN
X
Open the front right-hand door.
X Open cover :in the direction of the arrow
and remove it.
You will see the VIN.
The VIN can also be found in the following
locations:
R on the lower edge of the windshield
(Y page 444)
R on the vehicle identification plate
(Y page 444) Engine number
:
Emission control information plate,
including the certification of both federal
and Californian emissions standards
; Engine number (stamped into the
crankcase)
= VIN (on the lower edge of the windshield) Service products and filling
capacities
Important safety notes
G
WARNING
Service products may be poisonous and
hazardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children. H
Environmental note
Dispose of service products in an
environmentally responsible manner.
Service products include the following:
R Fuels
R Exhaust gas aftertreatment additives, e.g.
DEF
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant
Comply with all valid regulations with respect
to handling, storing, and disposing of service
fluids.
Components and service products must be
matched. You should therefore only use
products that have been tested and approved
by Mercedes-Benz.
Information on tested and approved products
can be obtained at an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved
by Mercedes-Benz by the following
inscription on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51) Service products and filling capacities
445Technical data Z

!
Do not use the following:
R marine diesel
R heating oil
R bio-diesel
R vegetable oil
R gasoline
R paraffin
R kerosene
Do not mix such fuels with diesel fuel and
do not use any special additives. This can
otherwise lead to engine damage.
! Vehicles with diesel particle filters: in
countries outside the EU, only use low
sulfur Euro diesel with a sulfur content of
under 50 ppm. Otherwise, the emission
control system could be damaged.
! Vehicles without a diesel particle
filter: in countries where only diesel fuel
with a high sulfur content is available, you
will need to carry out your vehicle's oil
change at shorter intervals. Further
information on oil change intervals can be
obtained at a qualified specialist workshop.
You will usually find information about the fuel
grade on the pump. If you cannot find the
label on the pump, ask the staff for
assistance.
Information on refueling (Y page 183).
Bio-diesel – FAME (fatty acid methyl ester)
Mercedes-Benz USA approves the use of bio-
diesel B5 for all BlueTEC diesel engines. The
concentration of bio-diesel in the ULSD may
not exceed 5% by volume.
Pure bio-diesel and diesel fuel with a higher
percentage of bio-diesel, such as B20, can
damage the engine and the fuel system. For
this reason, they are not approved.
For more information, consult the gas station
staff. The bio-diesel B5 label on the gasoline
pump must clearly state that the standard for
ULSD has been fulfilled. If the label is not
clear, do not refuel the vehicle. Do not refuel your vehicle with fuels unless
they have been approved by Mercedes-Benz.
Information on refueling (Y
page 183).
Low outside temperatures
i Diesel fuel with improved cold flow
properties is available during the winter
months. Further information about fuel
properties can be obtained from oil
companies, e.g. at gas stations. DEF
Important safety notes Comply with the important safety notes for
service products when handling DEF
(Y
page 445).
DEF is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
R not poisonous
R colorless and odorless
R not 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
experience 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.
Low outside temperatures DEF freezes at a temperature of
approximately 12 ‡ (-11 †). The vehicle is
delivered from the factory equipped with a
DEF preheating system. Winter operation can
thus be guaranteed even at temperatures
below 12 ‡ (-11 †).448
Service products and filling capacitiesTechnical data

Additives
!
Only use DEF in accordance with ISO
22241. Do not use additives with DEF and
do not dilute DEF with water. This may
destroy the BlueTEC exhaust gas
aftertreatment system.
Purity !
Impurities in DEF (e.g. due to other
service products, cleaning agents or dust)
lead to:
R increased emission values
R damage to the catalytic converter
R engine damage
R malfunctions in the BlueTEC exhaust gas
aftertreatment system
Assuring the purity of DEF is particularly
important with respect to avoiding
malfunctions in the BlueTEC exhaust gas
aftertreatment system.
If DEF is pumped out of the DEF tank, e.g.
during repair work, it must not be returned to
the tank. The purity of the fluid can no longer
be guaranteed.
Filling capacities Model Total capacity
GL 350 BlueTEC 4MATI
C
8.2 US gal
(31.2 l) Engine oil
General notes !
Never use engine oil or an oil filter of a
specification other than is necessary to
fulfill the prescribed service intervals. Do
not change the engine oil or oil filter in
order to achieve longer replacement
intervals than those prescribed. You could
otherwise cause engine damage or damage
to the exhaust gas aftertreatment. Follow the instructions in the service
interval display regarding the oil change.
Otherwise, you may damage the engine and
the exhaust gas aftertreatment.
When handling engine oil, observe the
important safety notes on service products
(Y page 445).
The engine oils are matched to the
performance 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
Center. Or visit the website
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle. Model Engine
model MB
Approval GL 450 4MATIC
GL 550 4MATIC
278 229.5
AMG vehicles
157 229.5
GL 350 BlueTEC
4MATIC
642 228.51,
229.31,
229.51 i
MB approval is indicated on the oil
containers.
Filling capacities The following values refer to an oil change
including the oil filter.Service products and filling capacities
449Technical data Z