2019 MERCEDES-BENZ GLS SUV fuel cap

Important safety notes .................. 378
Removing ....................................... 379
Storage location ............................ 379
Stowing .......................................... 379
Emergency Tensioning Devices
Activation .........................................56
Emergency unlocking
Tailgat e ............................................ 88
Emissions control
Service and warranty information .... 28
Engine
Check Engine warning lamp .......... .282
Display message ............................ 258
ECO start/stop function ................ 144
Engine number ............................... 384
Irregular running ............................ 146
Jump-starting ................................. 343
Starting (important safety notes) ... 141
Starting problems .......................... 146
Starting the engine with the
SmartKey ....................................... 142
Starting via smartphone ................ 142
Starting with KEYLESS-GO ............. 142
Switching off .................................. 158
Tow-starting (vehicle) ..................... 349
Engine electronics
Problem (malfunction) ................... 146
Engine oil
Adding .......................................... .323
Additives ........................................ 387
Checking the oil level ..................... 322
Checking the oil level using the
dipstick .......................................... 323
Display message ............................ 260
Filling capacity ............................... 387
Notes about oil grades ................... 386
Notes on oil level/consumption .... 322
Temperature (on-board computer, Mercedes-AMG vehicles) .............. .242
Engine switch-off
see ECO start/stop function
Entering an address
see also Digital Operator's Man-
ual ................................................. .287
ESP ®
(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 243
Characteristics ................................. 70 Deactivating/activating ................... 71
Display message ............................ 246
Function/notes ................................ 69
General notes .................................. 69
Important safety information ........... 70
Warning lamp ................................. 279
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 70
Exhaust check ................................... 161
Exhaust pipe (cleaning instruc-
tions) ................................................. .331
Exterior lighting
see Lights
Exterior mirrors
Adjusting ....................................... 110
Dipping (automatic) ....................... 112
Folding in when locking (on-boardcomputer) ...................................... 242
Folding in/out (automatically) ....... 111
Folding in/out (electrically) ........... 111
Out of position (troubleshooting) ... 111
Setting ........................................... 111
Storing settings (memory func-
tion) ............................................... 113
Storing the parking position .......... 112
Eyeglasses compartment ................. 297 F
Favorites Overview ........................................ 289
Filler cap
see Refueling
Flat tire
MOExtended tire s.......................... 336
Preparing the vehicle ..................... 335
TIREFIT kit ...................................... 337
see Emergency spare wheel
Floormats ........................................... 319
Fog lamps (extended range) ............. 118
Folding the rear bench seat for-
wards/back ....................................... 298
Fording
Off-road ......................................... 165
On flooded roads ........................... 165
Frequencies
Mobile phone ................................. 382
Two-way radio ................................ 382 Index
11

Fuel
Additives ........................................ 386
Consumption statistics .................. 233
Displaying the current consump-
tion ................................................ 234
Displaying the range ...................... 234
Driving tips .................................... 161
Fuel gauge ...................................... .37
Grade (gasoline) ............................ 385
Important safety notes .................. 385
Problem (malfunction) .................. .157
Refueling ........................................ 155
Tank content/reserve fuel ............. 385
Fuel filler flap
Opening ......................................... 156
Fuel level
Calling up the range (on-board
computer) ...................................... 234
Fuel tank
Capacity ........................................ 385
Problem (malfunction) ................... 157
Fuses
Allocation chart ............................ .349
Before changing ............................ .349
Dashboard fuse box ....................... 350
Fuse box in the engine compart-
ment .............................................. 350
Fuse box under rear bench sea t.... 350
Important safety notes .................. 349 G
Garage door opener Clearing the memory ..................... 319
General notes ................................ 316
Important safety notes .................. 316
Opening/closing the garage doo r..3 19
Problems when programming ....... .318
Programming (button in the rear-
view mirror) ................................... 317
Synchronizing the rolling code ....... 317
Gear indicator (on-board com-
puter, Mercedes-AMG vehicles) ....... 242
Genuine parts ...................................... 27
Glove box .......................................... .296
Google™ Local Search
see also Digital Operator's Man-
ual ................................................. .287 GTW (Gross Trailer Weight) (defini-
tion) .................................................... 371 H
Hazard warning lamps ......................117
Head restraints
Adjusting ......................................... 99
Adjusting (electrically) ................... 100
Adjusting (manually) ........................ 99
Adjusting (rear) .............................. 100
Installing/removing (rear) .............. 100
Luxury ............................................ 100
Headlamps
Fogging up ..................................... 119
see Automatic headlamp mode
Heating
see Climate control
High beam flasher .............................116
High-beam headlamps
Adaptive Highbeam Assist ............. 118
Display message ............................ 257
Replacing bulbs ............................ .121
Switching on/off ........................... 116
Highway mode ................................... 118
Hill start assist .................................. 143
HOLD function
Deactivating ................................... 184
Display message ............................ 264
Function/notes ............................ .183
Home address
see also Digital Operator's Man-
ual ................................................. .287
Hood
Closing .......................................... .322
Display message ............................ 272
Important safety notes .................. 321
Opening ......................................... 321
Horn ...................................................... 36
Hydroplaning ..................................... 165 I
Ignition lock see Key positions
Immobilizer .......................................... 7512
Index

Tailgate
Display message ............................ 271
Emergency unlocking ....................... 88
Important safety notes .................... 84
Limiting the opening angle ............... 88
Opening dimensions ...................... 389
Opening/closing (automatically
from inside) ...................................... 87
Opening/closing (automatically
from outside) ................................... 86
Opening/closing (from outside) ....... 85
Power closing .................................. 84
Tank
see Fuel tank
Tank content
Fuel gaug e....................................... 37
Technical data
Capacities ...................................... 384
Drawbar load (maximum) ............... 392
Information .................................... 382
Tires/wheels ................................. 377
Trailer load s................................... 392
Vehicle data ................................... 389
Telephone
Accepting a call (multifunction
steering wheel) .............................. 237
Authorizing a mobile phone (con-
necting) ......................................... 291
Authorizing a mobile phone via the device manager (connecting) ......... 292
Connecting a mobile phone
(device manager )........................... 292
Connecting a mobile phone (gen-
eral information) ............................ 291
Display message ............................ 272
Menu (on-board computer) ............ 237
Number from the phone book ........ 237
Redialing ........................................ 237
Rejecting/ending a call ................. 237
see also Digital Operator's Man-
ua l.................................................. 287
Temperature
Coolant (display in the instrument
cluster) .......................................... 231
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 242
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 242 Outside temperature ...................... 230
Setting (climate control
)................ 132
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 242
Through-loading feature ................... 298
Timing (RACETIMER) ......................... 243
Tire pressure
Calling up (on-board computer) ..... 359
Checking manually ........................ 358
Display message ............................ 268
Maximum ....................................... 358
Not reached (TIREFIT) .................... 339
Note s............................................. 357
Reached (TIREFIT) .......................... 339
Recommended ............................... 355
Tire pressure loss warning system
General notes ................................ 358
Important safety notes .................. 359
Restarting ...................................... 359
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 361
Function/note s............................. 359
General notes ................................ 359
Important safety notes .................. 360
Radio type approval for the tire
pressure monitor ........................... 362
Restarting ...................................... 362
Warning lamp ................................. 286
Warning message .......................... 361
Tire pressure table ............................ 356
TIREFIT kit
Important safety notes .................. 337
Storage location ............................ 335
Tire pressure not reached .............. 339
Tire pressure reached .................... 339
Using ............................................. 338
Tires
Aspect ratio (definition) ................. 372
Average weight of the vehicle
occupants (definition) .................... 370
Bar (definition) ............................... 370
Changing a whee l.......................... 372
Characteristics .............................. 370
Checking ........................................ 352
Curb weight (definition) ................. 371
Definition of terms ......................... 370
Direction of rotation ...................... 373 Index
21

G
WARNING
Fuels are toxic and harmful to health. There is a risk of injury.
You must avoid fuels coming into contact with
skin, eyes and clothes or being swallowed.
Do not inhale the fuel vapors. Keep children
away from fuels.
Keep doors and windows closed during the
refueling process.
If you or others come into contact with fuel,
observe the following points:
R Immediately rinse the fuel off your skin with
soap and water.
R If you get fuel into your eyes, immediately
rinse your eyes throughly with clean water.
Seek medical attention immediately.
R Seek medical attention immediately if fuel
has been swallowed. Do not induce vomit-
ing.
R Immediately change out of clothing which
has come into contact with fuel. G
WARNING
Electrostatic charging can lead to the creation
of sparks and ignite fuel vapor. There is a risk of fire and explosion.
Touch the metallic body of the vehicle before
you open the fuel filler cap or handle the pump nozzle. Any possible electrostatic charge
present will in this way be depleted.
Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition if you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system. Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. Notify a qualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
! Overfilling the fuel tank could damage the
fuel system. !
Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel can.
The fuel lines and/or the fuel injection system could otherwise be blocked by particles fromthe fuel can.
Do not get into the vehicle again during the refu-
eling process. Otherwise, electrostatic charge
could build up again.
If you overfill the fuel tank, fuel could spray out
when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
(Y page 385). Refueling
General information Pay attention to the important safety notes
(Y
page 155).
The fuel filler flap is unlocked or locked auto-
matically when you unlock or lock the vehicle
with the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed
00B6 in the instrument cluster. The arrow next
to the filling pump indicates the side of the vehi- cle.
Opening the fuel filler flap 0043
To open the fuel filler flap
0044 To insert the fuel filler cap
0087 Instruction label for fuel type to be refueled
0085 Tire pressure table 156
RefuelingDriving and parking

X
Switch off the engine.
X Remove the SmartKey from the ignition lock.
or, on vehicles with KEYLESS ‑GO:
X Open the driver's door.
The vehicle electronics will now be in key
position 0092. This is the same as the SmartKey
having been removed.
The driver’s door can be closed again.
X Press the fuel filler flap in the direction of
arrow 0043.
The fuel filler flap swings up.
X Turn the fuel filler cap counter-clockwise and
remove it.
X Insert the fuel filler cap into the holder
bracket on the inside of filler flap 0044.
X Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and refuel.
X Only fill the tank until the pump nozzle
switches off. Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may leak
out.
Closing the fuel filler flap X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X Close the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle.
If you are driving with the fuel filler cap open, the
00B6 reserve fuel warning lamp flashes. A mes-
sage appears in the multifunction display
(Y page 260).
In addition, the 00B9Check Engine warning
lamp may light up (Y page 282). Problems with fuel and the fuel tank
Problem
Possible causes/consequences and
0050 0050Solutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
Risk of explosion or fire. X Apply the electric parking brake.
X Switch off the engine.
X Remove the SmartKey from the ignition lock.
or, on vehicles with KEYLESS ‑GO:
X Open the driver's door.
The vehicle electronics will now be in key position 0092. This is the
same as the SmartKey having been removed.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap cannot
be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 77). The SmartKey battery is discharged or nearly discharged.
X Unlock the vehicle using the mechanical key (Y page 79). The fuel filler flap is unlocked, but the opening mechanism is jammed.
X Consult a qualified specialist workshop. Refueling
157Driving and parking Z

R
Take care when turning on an uphill or down-
hill slope or when driving across a slope. The
vehicle could otherwise tip over.
R Always keep the doors, the tailgate, the side
windows and the sliding sunroof closed while the vehicle is in motion.
R Do not shift the automatic transmission to
position 005C.
R Observe the notes on off-road fording
(Y page 165).
i Information about retrofitting special all-ter-
rain tires is available from any qualified spe-
cialist workshop.
i Do not use the HOLD function when driving
off-road, on steep uphill or downhill gradients
or on slippery or loose surfaces. The HOLD
function cannot hold the vehicle on such sur- faces.
Checklist before driving off-road !
If the engine oil warning lamp lights up while
the vehicle is in motion, stop the vehicle in a
safe place as soon as possible. Check the
engine oil level. The engine oil warning lamp
warning must not be ignored. Continuing the
journey while the symbol is displayed could
lead to engine damage.
X Engine oil level: check the engine oil level
and add engine oil if necessary.
When you drive on steep gradients, the engine
oil level must be sufficiently high to ensure
that oil is supplied correctly in the vehicle.
X Tire-changing tool kit: check that the jack is
working and make sure you have the lug
wrench, a robust tow cable and a folding
spade in the vehicle.
X Wheels and tires: check the tread depth and
pressure of the tires.
X Check for damage and remove any foreign
objects, e.g. small stones, from the wheels/
tires.
X Replace any missing valve caps.
X Replace dented or damaged wheels.
X Rims: dented or bent rims can result in a loss
of tire pressure and damage the tire bead.
Before driving off-road, check the wheels and
replace them if necessary. Checklist after driving off-road !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Driving over rough terrain places greater
demands on your vehicle than driving on normal
roads. After driving off-road, check the vehicle.
This allows you to detect damage promptly and reduce the risk of an accident to yourself and
other road users.
X If the Offroad orOffroad Plus drive program
is selected: select the Individual,Sport,
Comfort orSlippery drive program
(Y page 147).
X Deactivate the LOW RANGE off-road gear
(Y page 218).
X Deactivate DSR (Y page 215).
X Lower the vehicle level again to a level suita-
ble to the road conditions, e.g. to the normal
level.
X Clean the headlamps and rear lights and
check for damage.
X Clean the front and rear license plates.
X Clean the wheels and tires with a water jet
and remove any foreign objects.
X Clean the wheels, wheel housings and the
vehicle underside with a water jet; check for
any foreign objects and damage.
X Check whether twigs or other parts of plants
have become trapped. These increase the risk of fire and can damage fuel pipes, brake
hoses or the rubber bellows of the axle joints
and propeller shafts.
X After the trip, examine without fail the entire
undercarriage, wheels, tires, brakes, body-
work structure, steering, chassis and exhaust
system for damage.
X After driving for extended periods across
sand, mud, gravel, water or in similarly dirty
conditions, have the brake discs, wheels,
brake pads/linings and axle joints checked
and cleaned.
X If you detect strong vibrations after off-road
travel, check for foreign objects in the wheels
and drive train and remove them if necessary.
Foreign objects can disturb the balance and
cause vibrations. 168
Driving tipsDriving and parking

Display messages
Possible causes/consequences and
0050
0050Solutions 00A8 There is only a very small amount of fuel in the fuel tank.
X Refuel at the nearest gas station without fail. 00B6
Gas Cap Loose Gas Cap Loose The fuel filler cap is not closed correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. Driving systems
Display messages
Possible causes/consequences and
0050 0050Solutions 00AD
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
a lack of concentration on the part of the driver. A warning tone also
sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest. 00AD
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop. 00C4
Drive More Slowly Drive More Slowly You cannot change the vehicle level.
Possible causes are:
R You are driving too fast for the selected vehicle level
R You are driving too fast with a trailer or the trailer-coupling socket is
being used, e.g. for a bicycle rack
X Drive more slowly and then select the desired vehicle level again.
R Vehicles with the Off-Road Engineering package (Y page 180)
R Vehicles with the AIRMATIC package (Y page 187)
X Observe the notes on towing a trailer (Y page 222).00C4
Compressor Is Cool‐ Compressor Is Cool‐
ing ing You have selected a higher vehicle level. The compressor first needs
to cool down because of frequent level changes.
X Drive in a manner appropriate for the current vehicle level.
X Make sure that there is sufficient ground clearance.
X Allow the compressor to cool down.
When the compressor has cooled down, the display message dis-
appears. The vehicle then continues rising to the selected level. Display
messages
261On-board computer and displays Z

Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00B6
0051
The yellow reserve fuel warning lamp flashes while the vehicle is in motion.
In addition, the 00B9Check Engine warning lamp may light up.
The fuel filler cap is not closed correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler cap.
X If the fuel filler cap is closed: visit a qualified specialist workshop.00AC
0051
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gage is at the start of the scale.
The temperature sensor for the coolant temperature gage is malfunctioning.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 158).
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
283On-board computer and displays Z