air conditioning MERCEDES-BENZ GL-Class 2014 X166 Owner's Manual

1, 2, 3 ...
115 V socket ...................................... 353
12 V socket see Sockets
360° camera
Cleaning .........................................3 80
Function/notes ............................. 235
4ETS (Electronic Traction System) ....72
4MATIC (permanent four-wheel
drive) .................................................. 256A
ABS (Anti-lock Braking System) Display message ............................ 291
Function/notes ................................ 67
Important safety notes ....................67
Warning lamp ................................. 327
Activating/deactivating cooling
with air dehumidification .................155
Active Blind Spot Assist Activating/deactivating (on-
board computer) ............................ 281
Display message ............................ 314
Function/informatio n.................... 247
Trailer towing ................................. 250
Active Curve System
Display message ............................ 311
Function/notes ............................. 218
Active Driving Assistance package .247
Active Lane Keeping Assist Activating/deactivating (on-
board computer) ............................ 282
Display message ............................ 313
Function/informatio n.................... 251
Trailer towing ................................. 253
Active light function .........................133
Active Parking Assist Display message ............................ 314
Exiting a parking space ..................229
Function/notes ............................. 226
Important safety notes ..................226
Parking .......................................... 228
Towing a trailer .............................. 230
ADAPTIVE BRAKE ................................. 75 Adaptive Brake Assist
Display message ............................ 298
Function/notes ................................ 71
Adaptive Highbeam Assist
Display message ............................ 306
Function/notes ............................. 134
Switching on/off ........................... 134
Additives (engine oil) ........................450
ADS (Adaptive Damping System) Function/notes ............................. 217
Air bags
Display message ............................ 301
Front air bag (driver, front
passenger) ....................................... 46
Important safety notes ....................44
Knee bag .......................................... 47
PASSENGER AIR BAG OFF
indicator lamp .................................. 49
Safety guidelines ............................. 43
Side impact air bag ..........................47
Window curtain air bag ....................48
Air-conditioning system
see Climate control
Air filter (display message) ..............309
AIR FLOW ........................................... 157
AIRMATIC package ADS (Adaptive Damping System) ...217
Function/notes ............................. 217
Level control .................................. 218
Air vents
Glove box ...................................... .163
Important safety notes ..................162
Rear ............................................... 163
Setting ........................................... 162
Setting the center air vents ...........162
Setting the side air vents ...............163
Alarm
ATA (Anti-Theft Alarm system) .........77
Switching off (ATA) ..........................77
Switching the function on/off
(ATA) ................................................ 77
Alarm system
see ATA (Anti-Theft Alarm system)
Ambient lighting
Setting the brightness (on-board
computer) ...................................... 283
Setting the color (on-board
computer) ...................................... 2834
Index

Power closing feature
.........................88
Power washers .................................. 377
Power windows see Side windows
PRE-SAFE ®
(anticipatory occupant
protection) Display message ............................ 297
Operation ........................................ .54
PRE-SAFE ®
Brake
Activating/deactivating .................281
Display message ............................ 299
Function/notes ................................ 75
Warning lamp ................................. 336
Program selector button ..................177
Protection of the environment General notes .................................. 23
Pulling away
Trailer ............................................ 170
Pulling away (automatic
transmission) ..................................... 170 Q
Qualified specialist workshop ...........28 R
RACETIMER (on-board computer) ....287
Radar sensor system Activating/deactivating .................285
Display message ............................ 312
Radiator cover ................................... 371
Radio Selecting a station .........................278
see separate operating instructions
Radio-controlled devices (installing) 367
Radio-wave reception/
transmission in the vehicle
Declaration of conformity ................27
Reading lamp ..................................... 135
Rear compartment Exit/entry position (3rd row of
seats) ............................................ .113
Setting the air vents ......................163
Rear fog lamp
Switching on/off ........................... 130Rear seats
Adjusting ....................................... 111
Display message ............................ 322
Rear view camera
Cleaning instructions .....................380
Function/notes ............................. 230
Switching on/off ........................... 231
Rear-view mirror
Anti-glare (manual) ........................122
Dipping (automatic) .......................123
Rear window defroster
Problem (malfunction) ...................161
Switching on/off ........................... 160
Rear window wiper
Replacing the wiper blade .............. 142
Switching on/off ........................... 141
Refrigerant (air-conditioning
system)
Important safety notes ..................452
Refueling
Fuel gauge ....................................... 33
Important safety notes ..................182
Refueling proces s.......................... 183
see Fuel
Remote control
Programming (garage door opener) 364
Replacing bulbs
Important safety notes ..................137
Overview of bulb type s.................. 138
Removing/replacing the cover
(front wheel arch) .......................... 138
Reporting safety defects ....................29
Reserve (fuel tank) see Fuel
Reserve fuel
Display message ............................ 308
Warning lamp ................................. 333
see Fuel
Residual heat (climate control) ........161
Restraint system see SRS (Supplemental Restraint
System)
Reversing feature
Panorama sliding sunroo f................ 99
Roller sunblinds ............................. 100
Side windows ................................... 9416
Index

Sliding sunroof
................................. 99
Tailgate ............................................ 89
Reversing lamps (display message) 305
Roadside Assistance (breakdown) ....25
Roller sunblind Panorama roof with power tilt/
sliding pane l.................................. 100
Rear side windows .........................351
Roof carrier ........................................ 348
Roof lining and carpets (cleaning
guidelines) ......................................... 383
Roof load (maximum) ........................453
Route (navigation) see Route guidance (navigation)
Route guidance (navigation) ............277 S
Safety Child restraint systems ....................60
Occupant Classification System
(OCS) ............................................... 49
Safety system
see Driving safety systems
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................57
Adjusting the height ......................... 58
Belt force limiters ............................ 59
Cleaning ......................................... 383
Correct usage .................................. 55
Emergency Tensioning Devices ....... .59
Fastening ......................................... 57
Important safety guidelines .............55
Releasing ......................................... 58
Safety guidelines ............................. 43
Switching belt adjustment on/off
(on-board computer) ......................285
Warning lamp ................................. 324
Warning lamp (function) ................... 58
Seats
Adjusting (electrically) ...................108
Adjusting the head restraint ..........108
Cleaning the cover .........................383
Correct driver's seat position ........106
Entry position (3rd row of seats) ....113
Exit position (3rd row of seats) ......114 Folding down/up (third row of
seats) ............................................
.111
Folding the 2nd row of seats
forward electrically ........................115
Folding the 2nd row of seats
forward manually ........................... 113
Folding the rear bench seat
forwards/back ............................... 344
Important safety notes ..................107
Overview ........................................ 107
Seat heating problem ....................118
Seat ventilation problem ................119
Storing settings (memory function) 125
Switching seat heating on/off .......116
Switching seat ventilation on/off ..118
Selector lever
Cleaning ......................................... 382
Sensors (cleaning instructions) .......380
Service menu (on-board computer) .282
Service products Brake fluid ..................................... 450
Coolant (engine) ............................ 450
DEF special additives .....................448
Engine oil ....................................... 449
Fuel ................................................ 446
Important safety notes ..................445
Refrigerant (air-conditioning
system) .......................................... 452
Washer fluid .................................. .451
Settings
Factory (on-board computer) .........286
On-board computer .......................282
Setting the air distribution ...............158
Setting the airflow ............................158
SETUP (on-board computer) .............287
Side impact air bag .............................47
Side marker lamp (display
message) ............................................ 305
Side windows Cleaning ......................................... 379
Convenience closing feature ............95
Convenience opening feature ..........95
Hinged side windows .......................94
Important safety information ...........93
Opening/closing .............................. 94
Overview .......................................... 93
Problem (malfunction) .....................98
Resetting ......................................... 96 Index
17

pedestrians cannot be gaged accurately by
looking at a screen.
It may be the case that objects are highlighted
as well as pedestrians.
Fogged up or dirty windshield If the windshield in front of the camera is
fogged up or dirty on the inside or outside, the
Night View Assist Plus display is affected.
X To defrost: check the automatic air
conditioning settings (Y page 160)and fold
down the camera cover (Y page 381).
X To defrost the inside of the windshield:
fold down the camera cover (Y page 381)
and clean the windshield (Y page 379).242
Driving systemsDriving an
d parking

R
Secure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
R If you couple up a trailer, regularly check
that the cargo is securely fastened and
make sure that the trailer lamps and (if
applicable) the trailer brakes are
functioning correctly.
R Bear in mind that the handling will be less
stable when towing a trailer than when
driving without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
R If possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes. Then
increase the pressure on the brake pedal.
R If the automatic transmission repeatedly
shifts between gears on uphill or downhill
gradients, shift to a lower gear using the
left-hand steering wheel paddle shifter.
A lower gear and lower speed reduce the
risk of engine failure.
R When driving downhill, shift to a lower gear
to utilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases
dramatically while the air-conditioning
system is switched on, switch off the air-
conditioning system.
Coolant heat can additionally be dissipated
by opening the windows and by setting the
blower fan and the interior temperature to
maximum.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination. Due to the length of your vehicle/trailer
combination, you will have to travel an
additional distance beyond the vehicle you
are overtaking before returning to the
previous lane. Decoupling a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun brake
is engaged. G
WARNING
Vehicles with level control:
The vehicle is lowered as soon as you
disconnect the trailer cable. This could result
in your limbs or those of other people that are
between the vehicle body and tires or
underneath the vehicle being trapped. There
is a risk of injury.
Make sure that nobody is in the immediate
vicinity of the wheel housings or under the
vehicle when you disconnect the trailer cable.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the
rebounding of the overrun brake.
X Make sure that the automatic transmission
is set to position P.
X Apply the vehicle's electric parking brake.
X Start the engine.
X Close all doors and the tailgate.
X Apply the trailer's parking brake.
X Detach the trailer cable and decouple the
trailer.
X Switch off the engine. 268
Towing a trailerDriving and parking

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