radiator MERCEDES-BENZ GL-Class 2015 X166 Owner's Manual

Fuse box under rear bench sea
t.... 404
Important safety notes .................. 402 G
Garage door opener Clearing the memory ..................... 368
General notes ................................ 365
Important safety notes .................. 366
Opening/closing the garage doo r..3 68
Programming (button in the rear-
view mirror) ................................... 366
Gear indicator (on-board com-
puter) ................................................. .289
Genuine parts ...................................... 24
Glove box .......................................... .343
GTW (Gross Trailer Weight) (defini-
tion) .................................................... 427 H
Handbrake see Parking brake
Hazard warning lamps ......................132
Headlamps Fogging up ..................................... 135
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 108
Adjusting (electrically) ................... 109
Adjusting (manually) ..................... .109
Adjusting (rear) .............................. 110
Installing/removing (rear) .............. 110
Luxury ............................................ 109
Heating
see Climate control
High-beam headlamps
Adaptive Highbeam Assist ............. 134
Changing bulbs .............................. 139
Display message ............................ 306
Switching on/off ........................... 132
Hill start assist .................................. 171
HOLD function Deactivating ................................... 219
Display message ............................ 315
Function/notes ............................ .218 Hood
Closing .......................................... .373
Display message ............................ 324
Important safety notes .................. 372
Opening ......................................... 372
Horn ...................................................... 34
Hydroplaning ..................................... 198 I
Ignition lock see Key positions
Immobilizer .......................................... 78
Indicator lamps see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 373
Inspection see ASSYST PLUS
Instrument cluster
Overview .......................................... 35
Warning and indicator lamps ........... 36
Instrument cluster lighting .............. 274
Interior lighting Automatic control .......................... 136
Delayed switch-off (on-board
computer) ...................................... 287
Emergency lighting ........................ 137
Manual control ............................... 136
Overview ........................................ 135
Reading lamp ................................. 135
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 286
Setting the color of the ambient
lighting (on-board computer) ......... 286 J
Jack Storage location ............................ 388
Using ............................................. 431
Jump starting (engine) ......................397 12
Index

P
Paint code number ............................446
Paintwork (cleaning instructions) ... 379
Panic alarm .......................................... 44
Panorama roof with power tilt/
sliding panel
Important safety notes .................... 99
Opening/closing ............................ 101
Opening/closing the roller sun-
blind ............................................... 102
Problem (malfunction) ................... 103
Resetting ....................................... 102
Parking
Important safety notes .................. 190
Parking brake ................................ 192
Position of exterior mirror, front-
passenger side ............................... 124
Rear view camera .......................... 232
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 228
see Exterior mirrors
see PARKTRONIC
Parking assistance
see PARKTRONIC
Parking brake
Display message ............................ 296
Electric parking brake .................... 192
Warning lamp ................................. 334
Parking lamps
Switching on/off ........................... 130
PARKTRONIC
Deactivating/activating ................. 227
Driving system ............................... 225
Function/notes ............................ .225
Important safety notes .................. 225
Problem (malfunction) ................... 228
Range of the sensors ..................... 225
Trailer towing ................................. 227
Warning displa y............................. 226
PASSENGER AIR BAG OFF
Indicator lamp .................................. 45
Problems (malfunction) .................. 303
Pets in the vehicle ............................... 67
Plastic trim (cleaning instruc-
tions) .................................................. 384 Power closing feature
......................... 90
Power washers .................................. 379
Power windows see Side windows
PRE-SAFE ®
(anticipatory occupant
protection) Display message ............................ 299
Operation ......................................... 60
PRE-SAFE ®
Brake
Activating/deactivating ................. 284
Display message ............................ 301
Function/note s................................ 76
Warning lamp ................................. 338
Program selector button .................. 180
Protection of the environment General notes .................................. 24
Pulling away
Trailer ............................................ 171
Pulling away (automatic transmis-
sion) .................................................... 170 Q
Qualified specialist workshop ........... 29 R
RACETIMER (on-board computer) .... 290
Radar sensor system Activating/deactivating ................. 287
Display message ............................ 315
Radiator cover ................................... 373
Radio Selecting a station ......................... 280
see separate operating instructions
Radio-controlled devices (instal-
ling) ..................................................... 369
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 28
Reading lamp ..................................... 135
Rear compartment Exit/entry position (3rd row of
seats) ............................................. 112
Setting the air vents ...................... 163
Rear fog lamp
Switching on/of f........................... 130 16
Index

Interchanging/changing ................ 429
Mounting a new wheel ................... 433
Mounting a wheel .......................... 430
Overview ........................................ 406
Removing a wheel .......................... 433
Storing ........................................... 430
Tightening torque ........................... 434
Wheel size/tire size ....................... 434
Window curtain air bag
Display message ............................ 302
Operation ......................................... 53
Windows
see Side windows
Windshield
Defrosting ...................................... 159
Infrared reflective .......................... 369
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 376
Notes ............................................. 453
Windshield wipers
Problem (malfunction) ................... 143
Rear window wipe r........................ 141
Replacing the wiper blades ............ 141
Switching on/of f........................... 140
Winter driving
Slippery road surfaces ................... 198
Snow chains .................................. 409
Winter operation
General notes ................................ 408
Overview ........................................ 408
Radiator cover ............................... 373
Snow drive program ....................... 256
Winter tires
M+S tire s....................................... 408
Wiper blades
Cleaning ......................................... 381
Important safety notes .................. 141
Replacing ....................................... 141
Replacing (rear window )................ 142
Replacing (windshield) ................... 141
Wooden trim (cleaning instruc-
tions) .................................................. 384
Workshop see Qualified specialist workshop Z
ZONE function Switching on/of f........................... 159 Index
23

Do not shift down for additional engine brak-
ing on a slippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a quali-
fied specialist workshop at the onset of win-
ter.
Drive particularly carefully on slippery road
surfaces. Avoid sudden acceleration, steering and braking maneuvers. Do not use the cruise
control or DISTRONIC PLUS.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
Vehicles with the ON&OFFROAD package:
if driving in snow or with snow chains, select
the snow program (Y page 256) with the off-
road program selector wheel in the center
console.
i Vehicles with a diesel engine:
do not
cover the radiator, e.g. with a protective
cover. The measuring function of the
onboard diagnosis system may otherwise
provide inaccurate values. Some of these
values are required by law and must there-
fore always be accurate.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay. Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges. You
should pay special attention to road condi-
tions when temperatures are around the
freezing point.
For more information on driving with snow
chains, see (Y page 409).
For more information on driving with summer
tires, see (Y page 408).
Observe the notes in the "Winter operation"
section (Y page 408). Off-road driving
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle. G
WARNING
If the vehicle level is high, the vehicle center of gravity is raised. This could cause the vehicleto tip over more easily on uphill or downhill
gradients. There is a risk of an accident.
Select the lowest possible vehicle level.
When driving off-road, sand, mud and water,
possibly mixed with oil, for example, could get
into the brakes. This could result in a reduced braking effect or in total brake failure and also
in increased wear and tear. The braking char- acteristics change depending on the materialingressing the brakes. Clean the brakes after
driving off-road. If you detect a reduced brak- ing effect or grinding noises, have the brake
system checked in a qualified specialist work-shop as soon as possible. Adapt your driving
style to the different braking characteristics. Driving
tips
199Driving an d parking Z

The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, e.g. a high-
way.
R the system recognizes solid lane markings.
The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend. Active Driving Assistance package
General notes The Active Driving Assistance package con-
sists of DISTRONIC PLUS (Y
page 206), Active
Blind Spot Assist (Y page 249) and Active
Lane Keeping Assist (Y page 252).
Active Blind Spot Assist General notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your vehi-
cle which are behind the driver. A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lanes, you will also receive a visual and audible collision
warning. If a risk of lateral collision is detec-
ted, corrective braking may help you avoid a
collision. Before a course-correcting brake
application, Active Blind Spot Assist evalu-
ates the space in the direction of travel and at
the sides of the vehicle. For this, Active Blind
Spot Assist uses radar sensors which are
pointed in the direction of travel.
Active Blind Spot Assist supports you from a
speed of approximately 20 mph (30 km/h).
Important safety notes
Active Blind Spot Assist is only an aid. It may
fail to detect some vehicles and is no substi-
tute for attentive driving. G
WARNING
Active Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Active Blind Spot Assist may nei-
ther give warnings nor intervene in such sit-
uations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
i USA only: This device has been approved
by the FCC as a "Vehicular Radar System". The radar sensor is intended for use in an
automotive radar system only. Removal,
tampering, or altering of the device will void
any warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
i Canada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful inter- ference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper with, alter, or use
in any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
Radar sensors
The Active Blind Spot Assist radar sensors are integrated into the front and rear bumpers
and behind a cover in the radiator trim. Make sure that the bumpers and the cover in the
radiator grill are free of dirt, ice or slush. The Driving systems
249Driving and parking Z

Display messages
Possible causes/consequences and
0050
0050Solutions PRE-SAFE
PRE-SAFE
Functions Cur‐ Functions Cur‐
rently rently
Limited
Limited See
See
Operator's Manual
Operator's Manual Vehicles with the Active Driving Assistance package:
PRE
‑SAFE ®
Brake is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display mes-
sage disappears.
PRE ‑SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Clean the sensors in the radiator trim and the bumper
(Y page 381).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 74). PRE-SAFE PRE-SAFE
Functions Limited Functions Limited
See See
Operator's
Operator's Man‐
Man‐
ual
ual Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is faulty. The distance warning function may also have
failed.
Vehicles with the Active Driving Assistance package:
PRE ‑SAFE ®
Brake is faulty. BAS PLUS or the distance warning
function may also have failed.
X Visit a qualified specialist workshop. 0075
Restraint Restraint
Sys.
Sys.Mal‐
Mal‐
function Service
function Service
Required Required The restraint system is faulty.
The
0075 warning lamp also lights up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig- gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about the restraint system, see
(Y page 44). Display
messages
301On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 003D
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
! Do not continue driving. The engine could otherwise overheat.
X Secure the vehicle against rolling away (Y page 190).
X Consult a qualified specialist workshop. Display
messages
309On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions DISTRONIC
DISTRONIC
PLUS
PLUSCur‐
Cur‐
rently
rently Unavailable
Unavailable
See
See Operator's
Operator's Man‐
Man‐
ual
ual DISTRONIC PLUS is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears.
DISTRONIC is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Clean the sensors in the radiator trim and the bumper
(Y page 381).
X Restart the engine. DISTRONIC PLUS DISTRONIC PLUS
Inoperative Inoperative DISTRONIC PLUS is defective.
BAS PLUS (Brake Assist PLUS) and PRE-SAFE
®
Brake may be
inoperative as well.
A warning tone also sounds.
X Visit a qualified specialist workshop. DISTRONIC DISTRONIC
PLUS
PLUSSus‐
Sus‐
pended
pended You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal. DISTRONIC PLUS
DISTRONIC PLUS
- - - mph - - - mph An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS
(Y page 206). 318
Display
messagesOn-board computer and displays

Problem
Possible causes/consequences and
0050
0050Solutions 00AC
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
If the coolant level is correct, the airflow to the engine radiator may be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 375).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
below 248 ‡(120 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. 00AC
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury. Warning and indicator lamps in the instrument cluster
337On-board computer and displays Z

Problem
Possible causes/consequences and
0050
0050Solutions X
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 190).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 375).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. Driving systems
Problem
Possible causes/consequences and
0050 0050Solutions 00BA
The red distance warn-
ing function warning
lamp comes on while
the vehicle is moving. A
warning tone also
sounds. You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on DISTRONIC PLUS (Y page 206).
Further information on PRE‑ SAFE®
Brake (Y page 76).
Further information on the distance warning function (Y page 70).338
Warning and indicator lamps in the instrument clusterOn-board computer and displays