clock MERCEDES-BENZ GLS SUV 2016 User Guide

X
Start the engine.
X Close the doors and tailgate.
X Secure the trailer against rolling away.
X Remove the trailer cable and decouple the
trailer.
X Switch off the engine. Trailer power supply
! You can connect accessories with a power
rating of up to 180 W to the permanent power
supply and with a power rating of up to 180 W to the power supply that is switched on via the ignition lock.
The trailer battery may not be charged from
the power supply.
When it leaves the factory, your vehicle's trailer
socket is equipped with a permanent power
supply and a power supply that is switched on
via the ignition lock.
The permanent power supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin 10.
The trailer's permanent power supply is
switched off in the event of low vehicle supply
voltage and after six hours at the latest.
You can find more information about fitting the
trailer electrics at a qualified specialist work-
shop.
X To switch the connected power supply on
or off: turn the key to position 2or0respec-
tively (Y page 148). Failure check for LEDs
If LED lamps are fitted in the trailer, a malfunc-
tion message may appear in the multifunction
display even if there is no fault. The reason for
the error message may be that the current has
fallen below the minimum of 50 mA. To ensure reliable indication of the failure, each
LED chain in the trailer lighting must be guaran-
teed a minimum current of 50 mA. Trailer with 7-pin connector
General notes Trailer with 7-pin connector:
you can connect
to the 13-pin socket on the ball coupling using
an adapter or, if necessary, an adapter cable.
Both can be obtained at a qualified specialist
workshop.
Fitting the adapter !
Make sure that there is sufficient cable play
so that the cable cannot become detached
when cornering.
! Remove the adapter cable before folding in
the ball coupling. You could otherwise dam-
age the rear bumper and the adapter cable. X
Open the socket cover.
X Insert the plug connector with lug :into
groove =on the socket.
X Turn bayonet connection ;clockwise to the
stop.
X Let the cover engage.
X If you are using an adapter cable, secure the
cable to the trailer with cable ties. 238
Towing a trailerDriving and parking

Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions 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.
If the operating safety of your vehicle is
impaired, park the vehicle safely as soon as pos-
sible. Contact a qualified specialist workshop.
The on-board computer shows only messages or warnings from certain systems on the multi-
function display. You should therefore make
sure your vehicle is operating safely at all times.
For an overview, see the instrument cluster illus-
tration (Y page 35). Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the dis-
plays and the controls in the vehicle interior can be adjusted using the brightness control 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
anti-clockwise.
If you turn the light switch to Ã,Tor
L, 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. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 180):
The segments light up from the stored speed to the maximum speed.
R Variable speed limiter is activated
(Y page 182):
The segments light up from the start of the
scale to the selected speed limitation.
R Distance Pilot DISTRONIC is activated
(Y page 184):
One or two segments in the stored speed
range light up.
R Distance Pilot DISTRONIC detects a vehicle in
front moving more slowly than the stored
speed:
The segments between the speed of the vehi- cle in front and the stored speed light up. Rev counter
! Do not drive in the overrevving range. Doing
so will damage the engine.
The red band in the rev counter 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 condi-
tions when temperatures are around freezing
point. Displays and operation
241On-board computer and displays Z

The following cause engine failure or damage
to the exhaust system:
R Use of engine oils and oil filters that have
not been expressly approved for the service
system
R Replacement of engine oil and oil filter after
the replacement interval specified by the
service system has expired
R Use of engine oil additives
! Do not add too much oil. Topping up with too
much engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off. Example: engine oil filler cap
X Turn cap :anti-clockwise and remove it.
X Top up the engine oil.
If the oil level is at or below the MIN mark on
the oil dipstick, top up with 1.0 lof engine oil.
X Replace cap :on the filler neck and turn
clockwise.
Make sure that the cap locks securely into
place.
X Check the oil level again with the oil dipstick
(Y page 334).
Further information on engine oil (Y page 385).Other service products
Important safety notes G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is a risk of injury when accessing the
engine compartment. As far as possible, allow the engine to cool
down and only touch the components descri-
bed in the following. G
WARNING
The cooling system is pressurised, particu-
larly when the engine is warm. If you open the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Open
the cap slowly to release the pressure. G
WARNING
If windscreen washer concentrate comes into contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler neck.
Checking the coolant level X
Park the vehicle on a level surface.
Check the coolant level only if the vehicle is
on a level surface and the engine has cooled
down.
X Turn the key to position 2in the ignition lock
(Y page 148).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 150).
X Check the coolant temperature gauge in the
multifunction display.
The coolant temperature must be below
70 †. Engine compartment
335Maintenance and care Z

X
Turn the key to position 0in the ignition lock
(Y page 148).
X On vehicles with KEYLESS-GO, press the
Start/Stop button (Y page 150).
X Press the Start/Stop button (Y page 150).
X Slowly turn cap :half a turn anti-clockwise
and allow excess pressure to escape.
X Turn cap :further anti-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.
If the coolant level is approximately 1.5 cm
above marker bar =in the filler neck when
warm, there is enough coolant in coolant
expansion tank ;.
X If necessary, top up with coolant that has
been tested and approved by Mercedes-Benz.
X Replace cap :and turn it clockwise as far as
it will go.
Further information on coolant (Y page 386).
Topping up the windscreen washer sys- tem/headlamp cleaning system Example: washer fluid reservoir
X To open: pull cap:upwards by the tab.
X Top up with the premixed washer fluid.
X To close: press cap :onto the filler neck
until it engages.
If the washer fluid level drops below the recom- mended minimum of 1 litre, a message appears in the multifunction display prompting you to
top up the washer fluid (Y page 289).
Further information on windscreen washer fluid
(Y page 387). ASSYST PLUS
Service message
The ASSYST PLUS service interval display
informs you of the next service due date.
Information on the type of service and service
intervals (see the separate Service Booklet).
You can obtain further information from a
Mercedes-Benz Service Centre.
i The ASSYST PLUS service interval display
does not show any information on the engine oil level. Observe the notes on the engine oil
level (Y page 334).
The multifunction display shows a service mes-
sage for a few seconds, e.g.:
R Service A in .. days Service A in .. days
R Service A due
Service A due
R Service A overdue by .. days
Service A overdue by .. days
Depending on the operating conditions of the
vehicle, the remaining time or distance until the
next service due date is displayed.
The letter indicates which service is due. A A
stands for a minor service and B
Bfor a major ser-
vice. A number or another letter may be dis-
played after the letter.
Only for certain countries: the position after the letter A
A or B
Bindicates any necessary additional
maintenance work to be performed. If you notify
a qualified specialist workshop of this display,
you will receive a statement on the associated
costs.
The ASSYST PLUS service interval display does
not take into account any periods of time during which the battery is disconnected.
Maintaining the time-dependent service sched-
ule:
X Note down the service due date displayed in
the multifunction display before disconnect-
ing the battery.
or
X After reconnecting the battery, subtract the
battery disconnection periods from the ser-
vice date shown on the display. Hiding service messages
X Press the %ora button on the steering
wheel. 336
ASSYST PLUSMaintenance and care

occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle. In such cases, have the battery disconnected ata qualified specialist workshop. You can also
charge the battery with a charger recommended
by Mercedes-Benz. For more information,
please contact a qualified specialist workshop.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a lengthy period. Consult a qualified specialist workshop
if you wish to leave your vehicle parked up for a
long period of time.
When you park the vehicle, remove the key if you do not require any electrical consumers. The
vehicle will then use very little energy, thus con- serving battery power.
If the power supply has been interrupted, e.g. if the battery was discharged, you will have to:
R set the clock (see the Digital Owner's Manual)
On vehicles with a multimedia system and
navigation system, the clock is set automati-
cally.
R reset the function for folding the exterior mir-
rors in/out automatically, by folding the mir-
rors out once (Y page 117). Charging the 12 V battery
G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, naked flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of injury. Avoid contact with the skin, eyes or clothing.
Do not breathe in any battery gases. Do not lean over the battery. Keep the batteries out
of the reach of children. Immediately rinse off
battery acid thoroughly with plenty of clean
water and seek medical attention at once. G
WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maximum
charging voltage of 14.8 V.
! Only charge the battery using the jump-start
connection point.
The jump-starting connection point is in the
engine compartment (Y page 354).
X Open the bonnet.
X Connect the battery charger to the positive
terminal and earth point in the same order as
when connecting the donor battery in the
jump-starting procedure (Y page 354).
Keep away from fire and naked flames. Do not
lean over the battery. Never charge the battery
if it is still fitted to the vehicle, unless you are
using a battery charger that has been tested and approved by Mercedes-Benz. A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. This device
permits charging of the battery while it is instal-
led. Contact a Mercedes-Benz Service Centre
for information and availability. Read the battery charger's operating instructions before charg-
ing the battery.
If the indicator/warning lamps do not light up at
low temperatures, it is very likely that the dis-
charged battery has frozen. In this case you may
neither jump-start the vehicle nor charge the
battery. The service life of a battery that has
been thawed may be reduced. The starting char-
acteristics may be impaired, especially at low
temperatures. Have the thawed battery
checked at a qualified specialist workshop. Battery (vehicle)
353Breakdown assistance Z

tance a distance so that the tow rope does
not sag.
R Do not use steel cables or chains to tow
your vehicle. You could otherwise damage
the vehicle.
! Do not use the trailer tow hitch for recovery
or towing. Do not use the towing eye for
recovery. This could damage the vehicle. If in doubt, have the vehicle recovered using a
crane.
! When towing, pull away slowly and
smoothly. Pull the towed vehicle as straight as possible and not at an acute angle. If the trac-
tive power is too high, the vehicles could be
damaged.
When towing, it is preferable to use a rigid tow- ing bar as opposed to a tow rope. A rigid towing
bar helps to keep the tractive power low.
! To tow vehicles with KEYLESS-GO, use the
key instead of the Start/Stop button. The
automatic transmission may otherwise
switch to position Pwhen you open the driv-
er's or front-passenger door which could
damage the transmission.
! Vehicles with differential locks: make sure
the differential locks are in automatic mode.
When towing, the differential locks must not
be switched on. The transmission may other- wise be damaged.
! You may tow the vehicle for a maximum of
50km. A towing speed of 50 km/h must not
be exceeded.
For towing distances over 50 km, the entire
vehicle must be lifted up and transported.
Observe the legal requirements for the relevant countries when towing.
It is better to have the vehicle transported than
to have it towed.
If the vehicle has suffered transmission damage, have it transported on a transporter or trailer.
The automatic transmission must be in position
N when the vehicle is being towed.
The battery must be connected and charged.
Otherwise, you:
R cannot turn the key to position 2in the igni-
tion lock
R cannot release the electric parking brake
R cannot shift the automatic transmission to
position N Deactivate the automatic locking feature before
towing the vehicle (Y page 253). You could oth-
erwise be locked out when pushing or towing
the vehicle.
Deactivate tow-away protection before the vehi-
cle is towed away (Y page 79). Fitting/removing the towing eye
Fitting the towing eye The mountings for the removable towing eyes
are located in the bumpers. They are at the front and rear behind covers :;.
X Remove the towing eye from the vehicle tool
kit (Y page 345).
X To open the cover at the front: press the
mark on cover :inwards in the direction of
the arrow.
X To open the cover at the rear: insert a flat,
blunt object into the cutout and lever
cover ;out of the bumper.
X Take cover :or; off the opening.
X Screw in the towing eye clockwise as far as it
will go and tighten it.
Removing the towing eye X
Loosen the towing eye and unscrew it.
X Position cover :or; in the bumper and
press the cover on until it engages.
X Place the towing eye in the vehicle tool kit. Towing away and tow-starting
357Breakdown assistance Z

Removing the emergency spare wheel
X Lift the luggage compartment floor upwards
(Y page 319).
X Vehicles with a lockable luggage compart-
ment floor: remove the stowage tray.
X Release the Velcro fastener (Y page 345).
X Remove the warning triangle and jack.
X Turn emergency spare wheel retainer :anti-
clockwise and remove it.
X Remove stowage well ;.
X Remove "Minispare" emergency spare wheel
=.
Vehicles with a "Minispare" emergency spare wheel bag Observe the instructions and safety notes in the
"Fitting a wheel" section (Y page 370).
On vehicles with a Bang & Olufsen sound sys-
tem, the "Minispare" emergency spare wheel is
packed in an emergency spare wheel bag. The
emergency spare wheel bag is secured to the
lashing eyelets in the luggage compartment. Removing the emergency spare wheel
X Detach fastening straps ;.
X Unhook retaining spring hooks :and =of
fastening straps ;from the lasing eyelets.
X Remove the emergency spare wheel bag with
the "Minispare" emergency spare wheel.
X Open the emergency spare wheel bag and
remove the "Minispare" emergency spare
wheel.
Stowing the emergency spare wheel
X Place the "Minispare" emergency spare wheel
into the emergency spare wheel bag and
close the emergency spare wheel bag.
X Place the emergency spare wheel bag with
the "Minispare" emergency spare wheel into
the luggage compartment with the carrying
strap at the back.
X Hook retaining spring hooks :and =of
fastening straps ;into the lasing eyelets.
X Tighten fastening straps ;.
Mercedes-AMG vehicles with a collaps-
ible emergency spare wheel under the
luggage compartment floor !
Only place the collapsible emergency spare
wheel in the vehicle when it is dry. Otherwise,
moisture may get into the vehicle.
Observe the instructions and safety notes in the
"Fitting a wheel" section (Y page 370).
The collapsible emergency spare wheel can be
found in the stowage well under the luggage
compartment floor. 376
Emergency spare wheelWheels and ty
res

Removing the emergency spare wheel
X Lift the luggage compartment floor upwards
(Y page 319).
X Unscrew retaining screw ;anti-clockwise.
X Remove collapsible emergency spare
wheel :from the spare wheel well.
Inflating the collapsible emergency spare wheel (Y page 377).
Take the following steps to stow a used collaps-
ible emergency spare wheel. Otherwise, it will
not fit in the spare wheel well. Mercedes-Benz
recommends that you have this work performed
at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre.
Stowing the emergency spare wheel
X Unscrew the valve cap from the valve.
X If possible, unscrew the valve insert from the
valve and release the air.
i Fully deflating the tyre may take a few
minutes.
X Screw the valve insert back into the valve.
X Screw the valve cap back on.
X Lay collapsible emergency spare wheel :in
the emergency spare wheel well.
X Screw in retaining screw ;clockwise in the
collapsible emergency wheel to the stop.
X Swing the luggage compartment floor down
(Y page 319).
Mercedes-AMG vehicles with a collaps-
ible emergency spare wheel in the
emergency spare wheel bag Observe the instructions and safety notes in the
"Fitting a wheel" section (Y page 370).
On Mercedes-AMG vehicles with a Bang & Oluf-
sen sound system, the collapsible emergency
spare wheel is packed in an emergency spare
wheel bag. The emergency spare wheel bag is
secured to the lashing eyelets in the luggage
compartment. Removing the emergency spare wheel
X Unhook retaining spring hooks :of fasten-
ing strap ;from the lashing eyelets.
X Remove the emergency spare wheel bag with
the collapsible emergency spare wheel.
X Open the emergency spare wheel bag and
remove the collapsible emergency spare
wheel.
Inflating the collapsible emergency spare wheel (Y page 377).
Stowing the emergency spare wheel
X Place the collapsible emergency spare wheel
into the emergency spare wheel bag and
close the emergency spare wheel bag.
X Place the emergency spare wheel bag with
the collapsible emergency spare wheel into
the luggage compartment with the carrying
strap at the back.
X Hook retaining spring hooks :of fastening
strap ;into the lashing eyelets.
X Tighten fastening strap ;. Inflating the collapsible emergency
spare wheel (Mercedes-AMG GLS 63)
! Inflate the collapsible emergency spare
wheel using the tyre inflation compressor
before lowering the vehicle. The wheel rim
could otherwise be damaged.
! Do not operate the tyre inflation compres-
sor for longer than eight minutes at a time
without a break. It may otherwise overheat.
The tyre inflation compressor can be oper-
ated again once it has cooled down.
Comply with the manufacturer's safety instruc-
tions on the tyre inflation compressor label and
on the tyre sealant bottle. Emergency spare wheel
377Wheels and tyres Z