2016 MERCEDES-BENZ GLS SUV ECU

Towing the vehicle with both axles on
the ground
The automatic transmission automatically shifts to position Pwhen you open the driver's or front-
passenger door or when you remove the key
from the ignition lock.
In order to ensure that the automatic transmis-
sion stays in position Nwhen towing away the
vehicle, you must observe the following points:
X Make sure that the vehicle is stationary.
X Turn the key to position 2in the ignition lock.
X Depress the brake pedal and keep it
depressed.
X Shift the automatic transmission to position
N.
X Leave the key in position 2in the ignition lock.
X Release the brake pedal.
X Release the electric parking brake.
X Switch on the hazard warning lamps
(Y page 122).
In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch
as usual. In this case, only the turn signals for
the desired direction flash. When you reset the
combination switch, the hazard warning lamps
start flashing again. Transporting the vehicle
4MATIC vehicles/vehicles with auto-
matic transmission !
When the vehicle is loaded for transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport vehicle is not permitted. The drive train may
otherwise be damaged.
All vehicles !
You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transport. X Turn the key to position 2in the ignition lock.
X Shift the automatic transmission to position
N.
As soon as the vehicle is loaded: X Secure the vehicle against rolling away by
applying the electric parking brake.
X Shift the automatic transmission to position
P.
X Turn the key to position 0in the ignition lock
and remove it.
X Secure the vehicle. Information for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged.
Vehicles with 4MATIC may either be towed away
with both axles on the ground or be loaded up
and transported.
If the vehicle has transmission damage or dam- age to the front or rear axle, have it transportedon a transporter or trailer.
In the event of damage to the electrical sys-
tem: if the battery is defective, the automatic
transmission will be locked in position P. To shift
the automatic transmission to position N, you
must provide power to the vehicle's on-board
electrical system in the same way as when jump- starting (Y page 354).
Have the vehicle transported on a transporter or trailer. 358
Towing away and tow-startingBreakdown assistance

The wear patterns on the front and rear tyres
differ depending on the operating conditions.
Interchange the wheels before a clear wear pat-
tern has formed on the tyres. Front tyres typi-
cally wear more on the shoulders, while rear
tyres wear more in the centre.
On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 5,000 to 10,000 km depending on the
degree of tyre wear. Ensure that the direction of
rotation is maintained.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time a wheel is
interchanged. Check the tyre pressure and, if
necessary, restart the tyre pressure loss warn-
ing system or the tyre pressure monitor
(Y page 366). Direction of rotation
Tyres with a specified direction of rotation have additional benefits, e.g. if there is a risk of aqua- planing. These advantages can only be gained if
the tyres are fitted corresponding to the direc-
tion of rotation.
An arrow on the sidewall of the tyre indicates its correct direction of rotation. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the tyres
against oil, grease, petrol and diesel. Fitting a wheel
Preparing the vehicle X
Vehicles with an emergency spare wheel:
when fitting the emergency spare wheel in the
event of a flat tyre, observe the additional
notes on vehicle preparation under "Flat tyre"
(Y page 346).
X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the electric parking brake manually.
X Move the front wheels to the straight-ahead
position.
X Vehicles with automatic transmission:
shift the transmission to position
P.X
Vehicles with the AIRMATIC package:
make sure that the normal vehicle level is
selected (Y page 198).
X Vehicles with the Off-Road Engineering
package:
make sure that the normal level is
selected (Y page 192).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove the
key from the ignition lock.
X Vehicles with KEYLESS-GO: open the driv-
er's door.
The on-board electronics now have status 0.
This is the same as the key having been
removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 148).
X If included in the vehicle equipment, remove
the tyre-change tool kit from the vehicle.
X Safeguard the vehicle against rolling away.
i Apart from certain country-specific varia-
tions, vehicles are not equipped with a tyre-
change tool kit. For information on which
tools are required to perform a wheel change
on your vehicle, consult a Mercedes-Benz
Service Centre.
Necessary tyre-changing tools may include,
for example:
R jack
R wheel chock
R wheel wrench
Securing the vehicle against rolling
away If your vehicle is equipped with a wheel chock, it
can be found in the tyre-change tool kit
(Y page 345). 370
Changing a wheelWheels and tyres

The folding wheel chock is an additional secur-
ing measure to safeguard the vehicle from roll-
ing away, for example when changing a wheel.
X Fold both plates upwards :.
X Fold out lower plate ;.
X Insert the lugs on the lower plate fully into the
openings in base plate =.X
Place chocks or other suitable items under
the front and rear of the wheel that is diago-
nally opposite the wheel you wish to change.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle.
! Mercedes-AMG vehicles with
"Minispare" emergency spare wheel: only
use the "Minispare" emergency spare wheel
on the rear axle. If you fit the "Minispare"
emergency spare wheel to the front axle, the
braking system could be damaged.
If a tyre on the front axle is damaged, an
undamaged wheel on the rear axle must be
replaced first with the "Minispare" emergency spare wheel. The damaged wheel on the front
axle can then be replaced by the undamaged
wheel from the rear axle.
You must observe the instruction label on the "Minispare" emergency spare wheel. Observe the following when raising the vehi-
cle:
R only use the vehicle-specific jack that has
been tested and approved by Mercedes-Benz
to raise the vehicle. If the jack is used incor-
rectly, it could tip over while the vehicle is
raised.
R the jack is designed only to raise and hold the
vehicle for a short time while a wheel is being
changed. It is not permissible to use it to per- form maintenance work under the vehicle.
R avoid changing the wheel on uphill and down-
hill slopes.
R before raising the vehicle, safeguard it from
rolling away by applying the parking brake and
positioning wheel chocks. Do not release theparking brake while the vehicle is raised.
R the jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a large,
flat load-bearing underlay must be used. On a
slippery surface, a non-slip underlay must be
used, e.g. rubber mats.
R do not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack will not
be able to achieve its load-bearing capacity
due to the restricted height.
R make sure that the distance between the
underside of the tyres and the ground does
not exceed 3 cm.
R do not place your hands or feet under the
raised vehicle.
R do not lie under the vehicle.
R do not start the engine when the vehicle is
raised.
R do not open or close a door or the tailgate
while the vehicle is raised.
R make sure that no persons are present in the
vehicle when the vehicle is raised. Changing a wheel
371Wheels and tyres 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