engine coolant MERCEDES-BENZ GL-Class 2015 X166 Owner's Manual

Combination switch
.......................... 131
Consumption statistics (on-board
computer) .......................................... 277
Convenience closing feature .............. 97
Convenience opening feature ............ 97
Coolant (engine) Checking the level ........................ .375
Display message ............................ 308
Filling capacity ............................... 453
Important safety notes .................. 452
Temperature (on-board com-
puter) ............................................. 289
Temperature gauge ........................ 274
Warning lamp ................................. 336
Cooling
see Climate control
Copyright ............................................. 31
Cornering light function Display message ............................ 305
Function/notes ............................ .133
Crash-responsive emergency light-
ing ....................................................... 137
Crosswind Assist ................................. 75
Crosswind driving assistance ............ 75
Cruise control Activating ....................................... 204
Activation conditions ..................... 204
Cruise control lever ....................... 204
Deactivating ................................... 205
Display message ............................ 319
Driving system ............................... 203
Function/notes ............................ .203
Important safety notes .................. 204
Storing and maintaining current
speed ............................................. 204
Cup holder
Center console .............................. 351
Important safety notes .................. 350
Rear compartment ......................... 352
Temperature controlled ................. 351
Third row of seats .......................... 352
Customer Assistance Center
(CAC) ..................................................... 29
Customer Relations Department ....... 29 D
Data see Technical data
Daytime running lamps
Display message ............................ 307
Function/notes ............................ .128
Switching on/off (on-board com-
puter) ............................................. 285
Declarations of conformity ................. 28
DEF Adding .......................................... .188
Display message ............................ 311
Filling capacity ............................... 451
Important safety notes .................. 450
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 286
Interior lighting .............................. 287
Diagnostics connection ......................28
Diesel .................................................. 449
Differential lock (display mes-
sage) .................................................. .314
Digital speedometer ......................... 278
DIRECT SELECT lever Automatic transmission ................. 176
Display messages
ASSYST PLUS ................................ 376
Calling up (on-board computer) ..... 292
Driving systems ............................ .312
Engine ............................................ 308
General notes ................................ 292
Hiding (on-board computer) ........... 292
KEYLESS-GO .................................. 326
Lights ............................................. 305
Safety systems .............................. 293
SmartKey ....................................... 325
Tires ............................................... 320
Vehicle .......................................... .323
Distance recorder
see Odometer
see Trip odometer
Distance warning (warning lamp) .... 338
Distance warning function Activating/deactivating ................. 283
Function/notes ................................ 70
Warning lamp ................................. 338 8
Index

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 ........................... 112
Folding the rear bench seat for-
wards/back ................................... 346
Important safety notes .................. 107
Overview ........................................ 107
Seat heating problem .................... 118
Seat ventilation problem ................ 119
Storing settings (memory func-
tion) ............................................... 124
Switching seat heating on/off ....... 116
Switching seat ventilation on/off .. 118
Selector lever
Cleaning ......................................... 384
Sensors (cleaning instructions) ....... 381
Service menu (on-board com-
puter) ................................................. .284
Service products Brake fluid ..................................... 452
Coolant (engine) ............................ 452
DEF special additives ..................... 450
Engine oil ....................................... 451
Fuel ................................................ 448
Important safety notes .................. 447
Refrigerant (air-conditioning sys-
tem) ............................................... 454
Washer fluid ................................... 453
Settings
Factory (on-board computer) ......... 289
On-board computer ....................... 285
Setting the air distribution ...............158
Setting the airflow ............................ 158
SETUP (on-board computer) ............. 289
Side impact air bag .............................52
Side marker lamp (display mes-
sage) ................................................... 307
Side windows Cleaning ......................................... 381
Convenience closing feature ............ 97
Convenience opening feature ..........97 Hinged side window
s....................... 96
Important safety information ........... 95
Opening/closing .............................. 96
Overview .......................................... 95
Problem (malfunction) ..................... 99
Resetting ......................................... 98
Sliding sunroof
Important safety notes .................... 99
Opening/closing ............................ 100
Problem (malfunction) ................... 103
Resetting ....................................... 100
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 85
Changing the programming ............. 83
Checking the battery ....................... 85
Convenience closing feature ............ 98
Convenience opening feature .......... 97
Display message ............................ 325
Door central locking/unlocking ....... 82
Important safety notes .................... 82
Loss ................................................. 87
Mechanical key ................................ 84
Overview .......................................... 82
Positions (ignition lock) ................. 167
Problem (malfunction) ..................... 87
Starting the engine ........................ 170
Snow chains
Information .................................... 409
Snow drive program ....................... 256
Sockets
Center console .............................. 355
General notes ................................ 354
Luggage compartment ................... 355
Rear compartment ......................... 355
Specialist workshop ............................ 29
Special seat belt retractor .................. 61
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 278
In the Instrument cluster ................. 35
Segments ...................................... 275
Selecting the unit of measure-
ment .............................................. 285
see Instrument cluster 18
Index

Telephone
Accepting a call ............................. 282
Display message ............................ 325
Menu (on-board computer) ............ 281
Number from the phone book ........ 282
Redialing ........................................ 282
Rejecting/ending a call ................. 282
Temperature
Coolant .......................................... 274
Coolant (on-board computer) ......... 289
Engine oil (on-board computer) ...... 289
Outside temperature ...................... 275
Setting (climate control) ................ 157
Theft deterrent systems
ATA (Anti-Theft Alarm system )......... 78
Immobilizer ...................................... 78
Through-loading ................................ 345
Time see separate operating instructions
Timing (RACETIMER) ......................... 290
TIREFIT kit .......................................... 390
Tire pressure Calling up (on-board computer) ..... 414
Checking manually ........................ 413
Display message ............................ 320
Important safety notes .................. 414
Maximum ....................................... 412
Notes ............................................. 411
Not reached (TIREFIT) .................... 392
Reached (TIREFIT) .......................... 392
Recommended ............................... 410
Tire pressure loss warning sys-
tem
General notes ................................ 413
Important safety notes .................. 413
Restarting ...................................... 414
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 416
Function/note s............................. 414
General notes ................................ 414
Important safety notes .................. 415
Radio type approval for the tire
pressure monitor ........................... 417
Restarting ...................................... 417
Warning lamp ................................. 339
Warning message .......................... 416 Tires
Aspect ratio (definition) ................. 428
Average weight of the vehicle
occupants (definition) .................... 427
Bar (definition) ............................... 426
Changing a whee l.......................... 429
Characteristics .............................. 426
Checking ........................................ 407
Curb weight (definition) ................. 428
Definition of terms ......................... 426
Direction of rotation ...................... 429
Display message ............................ 320
Distribution of the vehicle occu-
pants (definition) ............................ 429
DOT, Tire Identification Number
(TIN) ............................................... 426
DOT (Department of Transporta-
tion) (definition) ............................. 427
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 427
GTW (Gross Trailer Weight) (defi-
nition) ............................................ 427
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 427
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 427
Important safety notes .................. 406
Increased vehicle weight due to
optional equipment (definition) ...... 427
Kilopascal (kPa) (definition) ........... 427
Labeling (overview) ........................ 423
Load bearing index (definition) ...... 428
Load index ..................................... 425
Load index (definition) ................... 427
M+S tire s....................................... 408
Maximum loaded vehicle weight
(definition) ..................................... 427
Maximum load on a tire (defini-
tion) ............................................... 428
Maximum permissible tire pres-
sure (definition) ............................. 428
Maximum tire load ......................... 425
Maximum tire load (definition) ....... 428
MOExtended tire s.......................... 408
Optional equipment weight (defi-
nition) ............................................ 428
PSI (pounds per square inch) (def-
inition) ........................................... 428 20
Index

Turn signals
Display message ............................ 305
Switching on/off ........................... 131
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 428
Type identification plate see Vehicle identification plate U
Unlocking Emergency unlocking ....................... 90
From inside the vehicle (central
unlocking button) ............................. 89 V
Vanity mirror (in the sun visor) ........ 352
Vehicle Correct use ...................................... 29
Data acquisition ............................... 30
Display message ............................ 323
Equipment ....................................... 25
Individual settings .......................... 285
Limited Warranty ............................. 30
Loading .......................................... 418
Locking (in an emergency) ............... 90
Locking (SmartKey) .......................... 82
Lowering ........................................ 434
Maintenance .................................... 26
Parking for a long period ................ 193
Pulling away ................................... 170
Raising ........................................... 431
Reporting problems ......................... 29
Securing from rolling away ............ 430
Towing away .................................. 399
Transporting .................................. 401
Unlocking (in an emergency) ........... 90
Unlocking (SmartKey) ...................... 82
Vehicle data ................................... 455
Vehicle battery
see Battery (vehicle)
Vehicle data ....................................... 455
Vehicle data (off-road driving) Approach/departure angle ............ 457
Fording depth ................................ 456
Maximum gradient climbing abil-
ity .................................................. 457 Vehicle dimensions
........................... 455
Vehicle emergency locking ................ 90
Vehicle identification number see VIN
Vehicle identification plate .............. 446
Vehicle level AMG adaptive sport suspension
system ........................................... 224
Vehicle level (display message) ....... 312
Vehicle maintenance see ASSYST PLUS
Vehicle tool kit .................................. 388
Video Operating the DVD ........................ .281
VIN ...................................................... 446 W
Warning and indicator lamps ABS ................................................ 329
Brakes .......................................... .328
Check Engine ................................. 335
Coolant .......................................... 336
Distance warning ........................... 338
DISTRONIC PLUS ........................... 338
ESP ®
.............................................. 331
ESP ®
OFF ....................................... 332
Overview .......................................... 36
PASSENGER AIR BAG OFF .............. .45
Reserve fuel .................................. .335
Restraint system ............................ 334
Seat belt ........................................ 327
Tire pressure monitor .................... 339
Warranty .............................................. 25
Washer fluid Display message ............................ 325
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 434
Wheel chock ...................................... 430
Wheels Changing a wheel .......................... 429
Checking ........................................ 407
Cleaning ......................................... 380
Cleaning (warning) ......................... 430
Emergency spare wheel ................. 440
Important safety notes .................. 406 22
Index

Warning and indicator lamps
Function Page
0043
0058
Low-beam head-
lamps 129
0044
0060
Parking lamps 130
0087
00E5
ESP® 331
0085
0057
High-beam head-
lamps 132
0083
Electric parking brake (red) 334
0049
(USA only) 0024
(Canada only) 0084
0024
Electric parking brake
(yellow) 334
006B
00BA
Distance warning 338
006C
003E003D
Turn signals 131
006D
0077
Tire pressure monitor 339 Function Page
006E
0075
Restraint system 44
006F
00E9
Seat belt 327
0070
0028
Diesel engine: pre-
glow 170
0071
00AC
Coolant 336
0072
005E
Rear fog lamp 130
0073
00B9
Check Engine 335
0074
00B6
Reserve fuel 335
0075
00BB
ESP®
OFF 331
0076
0025
ABS 329
0077
Brakes 328
0027
(USA only) 004D
(Canada only) 36
Instrument clusterAt a glance

Problems with the engine
Problem
Possible causes/consequences and
0050
0050Solutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go out.
X Try to start the engine again (Y page 169). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 397).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Vehicles with a gaso-
line engine:
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 375). Observe the warning
notes as you do so and add coolant if necessary. Driving
175Driving and parking Z

using the brake controller and check
whether the brakes function correctly.
R Secure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
R When you couple up a trailer, check at reg-
ular intervals that the load is firmly secured.If the trailer is equipped with trailer lights
and brakes, check the trailer to ensure that
these are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv- ing 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, do not brake suddenly, but
instead depress the brake pedal moder-
ately at first so that the trailer can activate its 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 dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
opening the windows and switching the ventilation blower and the interior temper-
ature to the highest level.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of the vehicle/trailer
combination, you require additional road
space in relation to the vehicle you are
overtaking before you can change back to
the original 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 discon-
nect the trailer cable. This could result in your limbs or those of other people that are
between the vehicle body and tires or under-
neath 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 rebound- ing 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. Towing a trailer
269Driving and parking Z

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment 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.
i Read the information on qualified special-
ist workshops (Y page 29). Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle while driving, you will be distracted from
traffic conditions. You could also lose control of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all times. Otherwise, a vehicle that is not oper-
ating safely may cause an accident.
For an overview, see the instrument panel
illustration (Y
page 35). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using the brightness con-
trol knob.
The brightness control knob is located on the bottom left of the instrument cluster
(Y page 35).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to 0058,0060or
0058, the brightness is dependent upon
the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! A display message is shown if the coolant
temperature is too high.
If the coolant temperature is over 248 ‡
(120 †), do not continue driving. The
engine will otherwise be damaged. 274
Displays and operationOn-board computer and displays

The coolant temperature gauge is in the
instrument cluster on the right-hand side
(Y page 35).
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 248 ‡ (120 †). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the temperature measured
and does not record the road temperature.
The outside temperature display is in the mul- tifunction display (Y page 276).
Changes in the outside temperature are dis-
played after a short delay. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 203):
The segments light up from the stored
speed to the maximum speed.
R DISTRONIC PLUS activated (Y page 206):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light
up. Operating the on-board computer
Overview 0043
Multifunction display
0044 Switches on the Voice Control System;
see the separate operating instructions
0087 Right control panel
0085 Left control panel
0083 Back button
X To activate the on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. Displays and operation
275On-board computer and displays Z

Restoring the factory settings
X
Press the 0059or0065 button on the steer-
ing wheel to select the Sett.
Sett.menu.
X Press the 0064or0063 button to select the
Factory Setting
Factory Setting submenu.
X Press 0076to confirm.
The Reset All Settings?
Reset All Settings? message
appears.
X Press the 0064or0063 button to select No
No
or Yes
Yes.
X Press 0076to confirm the selection.
If you select Yes
Yes, the multifunction display
shows a confirmation message.
For safety reasons, the Daytime Running
Daytime Running
Lights
Lights function in the Lights
Lightssubmenu is
only reset if the vehicle is stationary. ON&OFFROAD menu
Example: multifunction display
X Press the 0059or0065 button on the steer-
ing wheel to select the ON&OFFROAD
ON&OFFROADmenu.
You can set the current settings to appear in
the ON&OFFROAD ON&OFFROAD menu:
R On-road program (Y page 255)
R Off-road program (Y page 259) AMG menu in AMG vehicles
AMG displays 0043
Digital speedometer
0044 Gear indicator
0087 Upshift indicator
0085 Engine oil temperature
0083 Coolant temperature
0084 Transmission fluid temperature
X Press 0059or0065 on the steering wheel
to select the AMG
AMGmenu.
Upshift indicator UP
UP0087 indicates that the
engine has reached the overrevving range
when in the manual gearshift program.
Upshift indicator UP UP0087 fades out other mes-
sages until you have shifted up.
If the engine oil temperature is below 176 ‡
(80 †), oil temperature 0085is shown in blue.
Avoid driving at full engine output during this time.
If the transmission fluid temperature is below
122 ‡(50 †), oil temperature 0084is shown in
blue. Avoid driving at full engine output during
this time.
SETUP 0043
Drive program (C C/SS/MM)
0044 ESP ®
mode (ON ON/OFFOFF)
0087 Suspension tuning (COMFORT COMFORT/SPORT SPORT/
SPORT+
SPORT+ ) Menus and submenus
289On-board computer and displays Z