transmission MERCEDES-BENZ GL 2014 Service Manual

ThePark Assist active Select RPark Assist active Select R
ObserveObservesurroundingssurroundingsmessage appears in
the multifunction display.
As soon as the parking procedure is
complete, thePark Assist switched offPark Assist switched off
message appears and a warning tone sounds.
Active Parking Assist no longer supports you
with steering interventions. When Active
Parking Assist is finished, you must steer
again yourself. PARKTRONIC is still available.
Parking tips:
RThe way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the
position and shape of the vehicles parked
in front and behind it and the conditions of
the location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enough into it. In
some cases, it may also lead you across or
onto the curb. If necessary, you should
cancel the parking procedure with Active
Parking Assist.
RYou can also select preselect transmission
positionD. The vehicle redirects and does
not drive as far into the parking space.
Should the gear change occur too soon to
achieve a sensible parking position, the
parking procedure will be aborted.
Exiting a parking space
In order that Active Parking Assist can
support you when you exit the parking space:
Ryou need to have parked using Active
Parking Assist.
Rthe border of the parking space must be
high enough at the front and the rear. A
curb stone is too small, for example.
Rthe border of the parking space must not
be too wide, as the position of the vehicle
must not exceed an angle of 45° to the
starting position as it is maneuvered into
the parking space.
Ra maneuvering distance of at least 3.3 ft
(1.0 m) must be available.
XStart the engine.
XSwitch on the turn signal in the direction
you are pulling away.
XShift the transmission to positionDorR.
TheStart Park Assist? Yes: OK No:Start Park Assist? Yes: OK No:
8message appears in the multifunction
display.
XTo cancel the procedure:press the
8button on the multifunction steering
wheel or pull away.
or
XTo exit a parking space using Active
Parking Assist:press thevbutton on
the multifunction steering wheel.
ThePark Assist active AcceleratePark Assist active Accelerate
and brake Observe surroundingsand brake Observe surroundings
message appears in the multifunction
display.
XLet go of the multifunction steering wheel.
XReverse the vehicle or drive forwards, being
ready to brake at all times. Do not exceed
a maximum speed of approximately
6 mph (10 km/h) when exiting a parking
space. Otherwise Active Parking Assist will
be canceled.
XStop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
XShift the transmission to positionDorRas
required while the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
iYou will achieve the best results by
waiting for the steering procedure to
complete before pulling away.
If you back up after activation, the steering
wheel is moved to the straight-ahead
position.
XDrive forwards or back up the vehicle, being
ready to brake at all times.
XStop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
XDrive forwards and back up as prompted by
the PARKTRONIC warning displays, several
times if necessary.
Driving systems229
Driving and parking
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Once you have exited the parking space
completely, the steering wheel is moved to
the straight-ahead position. You hear a tone
and thePark Assist FinishedPark Assist Finishedmessage
appears in the multifunction display. You will
then have to steer and merge into traffic on
your own. PARKTRONIC is still available. You
can take over the steering, before the vehicle
has exited the parking space completely. This
is useful, for example when you recognize
that it is already possible to pull out of the
parking space.
Canceling Active Parking Assist
XStop the movement of the multifunction
steering wheel or steer yourself.
Active Parking Assist will be canceled at
once. ThePark Assist CanceledPark Assist Canceled
message appears in the multifunction
display.
or
XPress the PARKTRONIC button on the
center console (Ypage 224).
PARKTRONIC is switched off and Active
Parking Assist is immediately canceled.
ThePark Assist CanceledPark Assist Canceledmessage
appears in the multifunction display.
Active Parking Assist is canceled
automatically if:
Rthe electric parking brake is engaged
Rtransmission positionPis selected
Rparking using Active Parking Assist is no
longer possible
Ryou are driving faster than 6 mph
(10 km/h)
Ra wheel spins, ESP®intervenes or fails. The

parking. When maneuvering or parking, make
sure that there are no persons, animals or
objects in the area in which you are
maneuvering.
Under the following circumstances, the rear
view camera will not function, or will function
in a limited manner:
Rthe tailgate is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the camera is exposed to very bright light
Rif the area is lit by fluorescent light or LED
lighting (the display may flicker)
Rif there is a sudden change in temperature,
e.g. when driving into a heated garage in
winter
Rif the camera lens is dirty or obstructed
Rif the rear of your vehicle is damaged. In
this event, have the camera position and
setting checked at a qualified specialist
workshop
Activating/deactivating the rear view
camera
XTo activate:make sure that the SmartKey
is in position2in the ignition lock.
XMake sure that the function "show rear
view camera display" is selected in
COMAND.
XEngage reverse gear.
The area behind the vehicle is shown in the
COMAND display with guide lines.
XTo change the function mode for
vehicles with trailer tow hitch:using the
COMAND controller, select symbolCfor
the "Reverse parking" function or
symbolDfor "Coupling up a trailer" (see
the separate COMAND operating
instructions).
The symbol of the selected function is
highlighted.
To deactivate:the rear view camera is
deactivated if you:
Rshift the transmission to positionP
Rdrive 33 ft (10 m) forwards
Rshift the transmission fromRto another
position after 15 seconds
Rdrive forwards at a speed of over 5 mph
(10 km/h)
Displays in the COMAND display
The rear view camera may show a distorted
view of obstacles, show them incorrectly or
not at all. The rear view camera does not show
objects in the following positions:
Rvery close to the rear bumper
Runder the rear bumper
Rin the area immediately above the tailgate
handle
!Objects not at ground level may appear to
be further away than they actually are, e.g.:
Rthe bumper of a parked vehicle
Rthe drawbar of a trailer
Rthe ball coupling of a trailer tow hitch
Rthe rear section of an HGV
Ra slanted post
Use the guidelines only for orientation.
Approach objects no further than the
bottom-most guideline.
Driving systems231
Driving and parking
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RESP®is switched off.
Rthe transmission is not in positionD.
Ron vehicles with a trailer tow hitch, the
electrical connection to the trailer has been
correctly established.
Rthe off-road program is activated (vehicles
without the ON&OFFROAD package).
Roff-road program 1 or 2 is activated
(vehicles with the ON&OFFROAD package).
Rthe LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package).
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Active Lane Keeping Assist does not detect
traffic situations or road users. An
inappropriate brake application may be
interrupted at any time if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
A lane-correcting brake application is
interrupted automatically if:
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Rlane markings can no longer be recognized.
Switching on Active Lane Keeping Assist
XSwitch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardStandardorAdaptiveAdaptive(Ypage 282).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(Ypage 280) are shown in green. Lane
Keeping Assist is ready for use.
WhenStandardStandardis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, such
as ABS, BAS or ESP®.
WhenAdaptiveAdaptiveis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid
an obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
Towing a trailer
When you attach a trailer, make sure you have
correctly established the electrical
connection. This can be accomplished by
checking the trailer lighting.
On-road programs (vehicles with the
ON&OFFROAD package)
General notes
The on-road programs assist you during on-
road driving and the off-road programs when
driving off-road (Ypage 258).
The following program messages remain in
the multifunction display until the
corresponding vehicle level has been set. Up
to off-road level 2, you can hide the program
messages using the8orvbutton on
the multifunction steering wheel.
Driving systems253
Driving an d parking
Z

General notes
CLOW RANGE off-road gear button
DLOW RANGE off-road gear indicator lamp
HIGH RANGEPosition for all normal on-
road driving conditions
LOW RANGEOff-road position for
driving off-road and
fording
The transmission ratio
between the engine and
wheels is only
approximately one third of
that in the HIGH RANGE
road position. Drive torque
is thus proportionately
higher.
Do not use LOW RANGE:
Ron slippery road
surfaces, e.g. in the case
of slush
Ron snow or ice-covered
roads
Rif you have mounted
snow chains to your
vehicle
The LOW RANGE off-road gear assists you in
driving off-road and when fording. When LOW
RANGE is engaged, the engine’s performance
characteristics and the gearshifting
characteristics of the automatic transmission
are adapted for this purpose.
Further information about "Driving off-road"
(Ypage 197). You will find information about
driving safety systems in conjunction with
LOW RANGE in the "Safety" section
(Ypage 66).
From HIGH RANGE to LOW RANGE
!Only change from LOW RANGE to HIGH
RANGE if:
Rthe engine is running.
Rthe transmission is in positionN
Ryou are driving at a speed below
40 km/h
XPress LOW RANGE buttonC.
Indicator lampDflashes.
When the gear change is complete,
indicator lampDlights up. LOW RANGE
indicator appears in the multifunction
display and in the status indicator.
While indicator lampDis flashing, you can
cancel the gear change by pressing LOW
RANGE buttonCagain.
iYou cannot activate LOW RANGE if the
SPORT on-road program is activated. The
LOW RANGE Not in Drive ProgramLOW RANGE Not in Drive Program
SPORTSPORTmessage then appears in the
multifunction display.
From LOW RANGE to HIGH RANGE
!Only change from LOW RANGE to HIGH
RANGE if:
Rthe engine is running.
Rthe transmission is in positionN
Ryou are driving at a speed below
70 km/h
XPress LOW RANGE buttonC.
Indicator lampDflashes.
When the gear change is complete,
indicator lampDgoes out. In the
multifunction display, theLOW RANGE OffLOW RANGE Off
message appears and status indicator

Messages in the multifunction display
If a gear change process has not been successful, the following messages may be displayed
in the multifunction display:
Display messagesPossible causes/consequences andPPSolutions
LOW RANGE Max.LOW RANGE Max.
Speed 40 km/hSpeed 40 km/h
You have been driving faster than 40 km/h. Additionally, the
indicator lamp on the button in the center console blinks.
XDrive more slowly to carry out the gear change process.
LOWLOWRANGERANGEShiftShifttoto
Position N BrieflyPosition N Briefly
The transmission is in positionDand you are driving at below
40 km/h.
XShift the transmission toNto complete the gear change
process.
LOWLOWRANGERANGEShiftingShifting
Canceled PleaseCanceled Please
ReactivateReactivate
The gear change process was not carried out.
XEnsure that all gear change conditions are fulfilled and carry out
the gear change process again.
LOW RANGE StopLOW RANGE Stop
ApplyApplyParkingParkingBrakeBrake
A warning tone also sounds. The gear change process has not been
completed. LOW RANGE is in the neutral position. There is no
connection between the engine and the drive wheels.
!Do not drive any further. You could otherwise damage the
vehicle's drive train.
XStop the vehicle. Take into account the road and traffic
conditions when doing this.
XDepress the electric parking brake (Ypage 189).
XCarry out the gear change process again.
If the gear change process has been carried out, theLOWLOWRANGERANGE
Stop Apply Parking BrakeStop Apply Parking Brakemessage disappears.
ON&OFFROAD menu in the COMAND
display (vehicles with the
ON&OFFROAD package)
You can display some driving systems, driving
programs and additional information in the
COMAND display.
XMake sure that the SmartKey is in position
2in the ignition lock.
XMake sure that COMAND is activated, see
the separate COMAND operating
instructions.
XPress function buttonC.
The corresponding displays appear in the
COMAND display:
Rlevel control
Rsteering angle
Rvehicle's angle of inclination
262Driving systems
Driving and parking

of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a loss of function of
the brake systems of both the vehicle and
the trailer.
XMake sure that the automatic transmission
is set to positionP.
XApply the vehicle's electric parking brake.
XStart the engine.
XVehicles with the AIRMATIC package:
select highway level.
XVehicles with ADS:set ADS toAUTOor
COMF.
XSwitch off the engine.
XClose all doors and the tailgate.
XCouple up the trailer.
XEstablish all electrical connections.
XCheck that the trailer lighting system is
working.
iVehicles with the AIRMATIC package:
with a trailer attached, the vehicle will
always remain at highway level. When
coupling up a trailer, please observe the
following:
RUnless highway level has been set
manually, the vehicle is automatically
lowered to highway level. This is the case
if a speed of 5 mph(8km/h) is reached.
RHigh-speed level is not available.
These restrictions apply to all accessories
powered through a connection to the trailer
power socket of your vehicle, e.g. a bicycle
carrier.
Observe the maximum permissible trailer
dimensions (width and length).
Most U.S. states and all Canadian provinces
require by law:
RSafety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer
coupling, not to the bumper or the axle.
Leave enough play in the chains to make
tight cornering possible.
RA separate brake system for certain types
of trailer.
RA safety switch for braked trailers. Check
the specific legal requirements applicable
to your state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes.
Towing a trailer
There are numerous legal requirements
concerning the towing of a trailer, e.g. speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
RIn order to accumulate driving experience
and accustom yourself to the new handling
characteristics, practice the following at a
location where there is no traffic:
-Cornering
-Stopping
-Backing up
RBefore driving, check:
-the trailer tow hitch
-the safety switch for braked trailers
-the safety chains
-electrical connections
-the lights
-the wheels
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer has electronically controlled
brakes, pull away carefully. Brake manually
using the brake controller and check
whether the brakes function correctly.
Towing a trailer267
Driving an d parking
Z

RSecure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
RIf you couple up a trailer, regularly check
that the cargo is securely fastened and
make sure that the trailer lamps and (if
applicable) the trailer brakes are
functioning correctly.
RBear in mind that the handling will be less
stable when towing a trailer than when
driving without one. Avoid sudden steering
movements.
RThe 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.
RIf possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes. Then
increase the pressure on the brake pedal.
RIf 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.
RWhen 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.
RIf the coolant temperature increases
dramatically while the air-conditioning
system is switched on, switch off the air-
conditioning system.
Coolant heat can additionally be dissipated
by opening the windows and by setting the
blower fan and the interior temperature to
maximum.
RWhen overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination, you will have to travel an
additional distance beyond the vehicle you
are overtaking before returning to the
previous lane.
Decoupling a trailer
GWARNING
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.
GWARNING
Vehicles with level control:
The vehicle is lowered as soon as you
disconnect the trailer cable. This could result
in your limbs or those of other people that are
between the vehicle body and tires or
underneath 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
rebounding of the overrun brake.
XMake sure that the automatic transmission
is set to positionP.
XApply the vehicle's electric parking brake.
XStart the engine.
XClose all doors and the tailgate.
XApply the trailer's parking brake.
XDetach the trailer cable and decouple the
trailer.
XSwitch off the engine.
268Towing a trailer
Driving and parking

Display messagesPossible causes/consequences andPPSolutions
I(USA
only)$(Canada
only)
Please ReleasePlease Release
Parking BrakeParking Brake
The redI(USA only)/$(Canada only) indicator lamp
flashes and a warning tone sounds. A condition for automatic
release of the electric parking brake is not fulfilled (Ypage 189).
You are driving with the electric parking brake applied.
XRelease the electric parking brake manually.
The redI(USA only)/$(Canada only) indicator lamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Ypage 189).
I(USA
only)$(Canada
only)
Parking Brake SeeParking Brake See
Operator's ManualOperator's Manual
The yellow$warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
XSwitch the ignition off.
XPress the electric parking brake handle for at least ten seconds.
XShift the transmission toP.
XConsult a qualified specialist workshop.
The yellow$warning lamp and the redI(USA
only)/$(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
or
XRelease the electric parking brake automatically (Ypage 189).
If the electric parking brake still cannot be released:
XDo not drive on.
XConsult a qualified specialist workshop.
294Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
The redI(USA only)/$(Canada only) indicator lamp
flashes and the yellow$warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
To apply:
XSwitch off the ignition and turn it back on.
XApply the electric parking brake manually.
If the redI(USA only)/$(Canada only) indicator lamp
continues to flash:
XDo not drive on.
XSecure the vehicle against rolling away (Ypage 428).
XShift the transmission toP.
XTurn the front wheels towards the curb.
XConsult a qualified specialist workshop.
The yellow$warning lamp lights up. The redI(USA
only)/$(Canada only) indicator lamp flashes for about ten
seconds after the electric parking brake has been applied or
released. It then goes out or remains lit.
The electric parking brake is malfunctioning.
XSwitch off the ignition and turn it back on.
XApply the electric parking brake.
If it is not possible to engage the electric parking brake:
XShift the transmission toP.
XVisit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
XRelease the electric parking brake automatically (Ypage 189).
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
Displaymessages295
On-b oard computer and displays
Z