2014 MERCEDES-BENZ GL tire size

Warning lamp ................................. 337
Warning message..........................414
Tires
Aspect ratio (definition).................426
Average weight of the vehicle
occupants (definition)....................425
Bar (definition)...............................424
Changing a wheel..........................427
Characteristics..............................424
Checking ........................................ 405
Definition of terms.........................424
Direction of rotation......................428
Display message............................318
Distribution of the vehicle
occupants (definition)....................427
DOT, Tire Identification Number
(TIN) ...............................................424
DOT (Department of
Transportation) (definition)............425
GAWR (Gross Axle Weight Rating)
(definition).....................................425
GTW (Gross Trailer Weight)
(definition).....................................425
GVW (Gross Vehicle Weight)
(definition).....................................425
GVWR (Gross Vehicle Weight
Rating) (definition).........................425
Important safety notes..................404
Increased vehicle weight due to
optional equipment (definition)......425
Kilopascal (kPa) (definition)...........425
Labeling (overview)........................421
Load bearing index (definition)......426
Load index.....................................423
Load index (definition)...................426
M+S tires.......................................406
Maximum loaded vehicle weight
(definition).....................................425
Maximum load on a tire (definition) 426
Maximum permissible tire
pressure (definition) ....................... 426
Maximum tire load.........................423
Maximum tire load (definition).......426
MOExtended tires..........................406
Optional equipment weight
(definition).....................................426
PSI (pounds per square inch)
(definition).....................................426
Replacing.......................................427
Service life.....................................406
Sidewall (definition).......................426
Speed rating (definition)................425
Storing...........................................428
Structure and characteristics
(definition).....................................424
Temperature..................................420
TIN (Tire Identification Number)
(definition).....................................426
Tire bead (definition)......................426
Tire pressure (definition)................426
Tire pressures (recommended)......425
Tire size (data)...............................432
Tire size designation, load-bearing
capacity, speed rating .................... 421
Tire tread.......................................405
Tire tread (definition).....................426
Total load limit (definition).............427
Traction.........................................420
Traction (definition).......................427
Tread wear.....................................420
TWR (permissible trailer drawbar
noseweight) (definition).................427
Uniform Tire Quality Grading
Standards......................................419
Uniform Tire Quality Grading
Standards (definition)....................425
Unladen weight (definition)............426
Wear indicator (definition).............427
Wheel and tire combination...........435
Wheel rim (definition)....................425
see Flat tire
Tool
see Vehicle tool kit
Top Tether............................................64
Towing
Important safety guidelines...........397
Installing the towing eye................398
Removing the towing eye...............399
Towing a trailer
Active Parking Assist.....................230
Axle load, permissible....................457
Cleaning the trailer tow hitch ......... 381
Coupling up a trailer......................266
Decoupling a trailer.......................268
Driving tips....................................264
ESP®(Electronic Stability Program).74
20Index

Vehicle emergency locking................88
Vehicle identification number
see VIN
Vehicle identification plate..............444
Vehicle level
AMG adaptive sport suspension
system...........................................221
Vehicle level (display message).......310
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit..................................386
Video
Operating the DVD ......................... 279
VIN......................................................444
W
Warning and indicator lamps
ABS ................................................ 327
Brakes...........................................326
Check Engine.................................333
Coolant..........................................334
Distance warning...........................336
DISTRONIC PLUS...........................336
ESP®..............................................329
ESP®OFF ....................................... 330
Overview..........................................34
PASSENGER AIRBAG OFF................49
Reserve fuel...................................333
Seat belt........................................324
SRS ................................................ 332
Tire pressure monitor....................337
Warranty..............................................24
Washer fluid
Display message............................322
Wheel and tire combination
see Tires
Wheel bolt tightening torque...........432
Wheel chock......................................428
Wheels
Changing a wheel..........................427
Checking ........................................ 405
Cleaning ......................................... 379
Cleaning (warning).........................428
Emergency spare wheel.................439
Important safety notes..................404
Interchanging/changing................427
Mounting a new wheel...................431
Mounting a wheel..........................428
Overview........................................404
Removing a wheel..........................431
Storing...........................................428
Tightening torque ........................... 432
Wheel size/tire size.......................432
Window curtain air bag
Display message............................300
Operation .........................................48
Windows
see Side windows
Windshield
Defrosting......................................159
Infrared reflective..........................367
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid.......................374
Notes.............................................451
Windshield wipers
Problem (malfunction)...................143
Rear window wiper........................141
Replacing the wiper blades............141
Switching on/off...........................140
Winter driving
Slippery road surfaces...................196
Snow chains..................................407
Winter operation
General notes................................406
Overview........................................406
Radiator cover...............................371
Snow drive program ....................... 255
Winter tires
M+S tires.......................................406
Wiper blades
Cleaning ......................................... 379
Important safety notes..................141
Replacing.......................................141
Replacing (rear window)................142
Replacing (windshield)...................141
Wooden trim (cleaning instructions)382
Workshop
see Qualified specialist workshop
Z
ZONE function
Switching on/off...........................159
22Index

If the pressure loss warning message
appears in the multifunction display:
RObserve the instructions in the display
messages (Ypage 318).
RCheck the tire for damage.
RIf driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
In addition to the vehicle load, the driving
distance possible depends upon:
RSpeed
RRoad condition
ROutside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving
conditions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).
iWhen replacing one or all tires, make sure
that you use only tires:
Rof the size specified for the vehicle and
Rmarked "MOExtended"
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a
standard tire may be used as a temporary
measure. Make sure that you use the
proper size and type (summer or winter
tire).
iVehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit may be obtained from a
qualified specialist workshop.
Important safety notes
GWARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when
cornering, accelerating quickly and when
braking. There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
Ryou hear banging noises.
Rthe vehicle starts to shake.
Ryou see smoke and smell rubber.
RESP®is intervening constantly.
Rthere are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The
defective tire must be replaced in every case.
TIREFIT kit
Important safety notes
TIREFIT is a tire sealant.
You can use TIREFIT to seal punctures of up
to 0.16 in (4 mm), particularly those in the tire
tread. You can use TIREFIT at outside
temperatures down to

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
iRead the information on qualified
specialist workshops: (Ypage 28).
Important safety notes
GWARNING
If wheels and tires of the wrong size are used,
the wheel brakes or suspension components
may be damaged. There is a risk of an
accident.
Always replace wheels and tires with those
that fulfill the specifications of the original
part.
When replacing wheels, make sure to use the
correct:
Rdesignation
Rmodel
When replacing tires, make sure to use the
correct:
Rdesignation
Rmanufacturer
Rmodel
GWARNING
A flat tire severely impairs the driving,
steering and braking characteristics of the
vehicle. There is a risk of accident.
Tires without run-flat characteristics:
Rdo not drive with a flat tire.
Rimmediately replace the flat tire with your
emergency spare wheel or spare wheel, or
consult a qualified specialist workshop.
Tires with run-flat characteristics:
Rpay attention to the information and
warning notices on MOExtended tires (tires
with run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benz or that are not
being used correctly can impair operating
safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist
workshop and inquire about:
Rsuitability
Rlegal stipulations
Rfactory recommendations
Information on the dimensions and types of
wheels and tires for your vehicle can be found
in the "Wheel/tire combinations" section
(Ypage 432).
Information on air pressure for the tires on
your vehicle can be found:
Ron the vehicle's Tire and Loading
Information placard on the B-pillar
(Ypage 415)
Ron the tire pressure label on the fuel filler
flap (Ypage 184)
Rin the "Tire pressure" section
Operation
Information on driving
If the vehicle is heavily loaded, check the tire
pressures and correct them if necessary.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicate that
the wheels or tires are damaged. If you
suspect that a tire is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to check the wheels and tires for
damage. Hidden tire damage could also be
causing the unusual handling characteristics.
If you find no signs of damage, have the tires
404Operation
Wheels and tires

Only winter tires bearing theMsnowflake
symbol in addition to the M+S marking
provide the best possible grip in wintry road
conditions.
Only these tires will allow driving safety
systems such as ABS and ESP®to function
optimally in winter. These tires have been
developed specifically for driving in snow.
Use M+S tires of the same make and tread on
all wheels to maintain safe handling
characteristics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
Once the winter tires are mounted:
XCheck the tire pressures (Ypage 411).
XRestart the tire pressure monitor
(Ypage 412).
XVehicles for Canada:restart the tire
pressure loss warning system
(Ypage 412).
For more information on driving with the
emergency spare wheel, see (Ypage 439).
Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralways install snow chains in pairs to the
rear wheels.
!You must drive at raised vehicle level
(height 1) if snow chains have been
installed. The vehicle may otherwise be
damaged.
!Vehicles with Adaptive Damping
System (ADS):do not use the sports mode
if you have installed snow chains. The
vehicle may otherwise be damaged.
!On some tire sizes there is not enough
space for snow chains. To avoid damage to
the vehicle or tires, observe the "Wheel and
tire combinations" section under "Tires and
wheels".
For safety reasons, Mercedes-Benz
recommends that you only use snow chains
that have been specially approved for your
vehicle by Mercedes-Benz, or are of a
corresponding standard of quality.
If you intend to mount snow chains, please
bear the following points in mind:
ROnly use snow chains when driving on
roads completely covered by snow.
Remove the snow chains as soon as
possible when you come to a road that is
not snow-covered.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
RLocal regulations may restrict the use of
snow chains. Observe the appropriate
regulations if you wish to mount snow
chains.
RSnow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (Ypage 432).
iYou may wish to deactivate ESP®
(Ypage 73) when pulling away with snow
chains installed. You can thereby allow the
wheels to spin in a controlled manner,
achieving an increased driving force
(cutting action).
For more information on driving with the
emergency spare wheel, see (Ypage 439).
Winter operation407
Wheels and tires
Z

The tire pressure table contains the
recommended pressures for cold tires for
various operating conditions, i.e. differing
load and speed conditions.
Example: tire pressure table with tire dimensions
If a tire size precedes a tire pressure, the tire
pressure information following is only valid
for that tire size. The load conditions "partially
laden" and "fully laden" are defined in the
table for different numbers of occupants and
amounts of luggage. The actual number of
seats may differ.
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g.
R18. The rim diameter is part of the tire size
and can be found on the tire sidewall
(Ypage 421).
If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset
to the higher values:
Rif you want to drive with an increased load
and/or
Rif you want to drive at higher road speeds
iThe tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may have a negative
effect on driving comfort.
If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and
a sudden loss of pressure.
For more information, contact a qualified
specialist workshop.
Important notes on tire pressure
GWARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident.
RCheck the tire for foreign objects.
RCheck whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage,
contact a qualified specialist workshop.
GWARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and
malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire
pressure monitors keep the tire valve open.
This can also result in tire pressure loss. There
is a risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about
the tire pressure. On vehicles equipped with
the electronic tire pressure monitoring
system, the tire pressure can be checked
using the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is
dependent on the driving speed and the load.
Tire pressure409
Wheels and tires
Z

Example: current tire pressure display
For information on the message display, refer
to the "Checking the tire pressure
electronically" section (Ypage 414).
Important safety notes
GWARNING
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the pressure
recommended by the vehicle manufacturer
on the Tire and Loading Information placard
on the driver's door B-pillar or the tire
pressure label on the inside of the fuel filler
flap. If your vehicle has tires of a different size
than the size indicated on the Tire and Loading
Information placard or the tire pressure label,
you should determine the proper tire pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle's
handling and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the
driver's responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate if the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the warning lamp will
flash for approximately a minute and then
remain continuously illuminated. This
sequence will be repeated every time the
vehicle is started as long as the malfunction
exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Ypage 408). Note that the correct tire
pressure for the current operating situation
must first be taught-in to the tire pressure
monitor. If there is a substantial loss of
pressure, the warning threshold for the
warning message is aligned to the reference
values taught-in. Restart the tire pressure
monitor after adjusting the pressure of the
cold tires (Ypage 415). The current
pressures are saved as new reference values.
As a result, a warning message will appear if
the tire pressure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Ypage 408).
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
Tire pressure413
Wheels and tires
Z

Two instruction labels on your vehicle show
the maximum possible load.
(1) The Tire and Loading Information placard
is on the B-pillar on the driver's side. The
Tire and Loading Information placard
shows the maximum permissible number
of occupants and the maximum
permissible vehicle load. It also contains
details of the tire sizes and
corresponding pressures for tires
mounted at the factory.
(2) The vehicle identification plate is on the
B-pillar on the driver's side. The vehicle
identification plate informs you of the
gross vehicle weight rating. It is made up
of the vehicle weight, all vehicle
occupants, the fuel and the cargo. You
can also find information about the
maximum gross axle weight rating on the
front and rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried
by one axle (front or rear axle). Never
exceed the maximum load or the
maximum gross axle weight rating for the
front or rear axle.
CB-pillar, driver's side
Maximum permissible gross vehicle
weight rating
XSpecification for maximum gross vehicle
weightCis listed in the Tire and Loading
Information placard: "The combined weight
of occupants and cargo should never
exceed XXX kilograms or XXX lbs."
The gross weight of all vehicle occupants,
load and luggage must not exceed the
specified value.
iThe specifications shown on the Tire and
Loading Information placard in the
illustration are examples. The maximum
permissible gross vehicle weight rating is
vehicle-specific and may differ from that in
the illustration. You can find the valid
maximum permissible gross vehicle weight
rating for your vehicle on the Tire and
Loading Information placard.
Number of seats
Maximum number of seatsCindicates the
maximum number of occupants allowed to
416Loading the vehicle
Wheels and tires