2012 MERCEDES-BENZ GLK SUV engine

To activate DISTRONIC PLUS, the following
conditions must be fulfilled:
R the engine must be running. It may take up
to two minutes of driving before DIS-
TRONIC PLUS is ready for use.
R the parking brake must be released.
R ESP ®
must be switched on, but not inter-
vening.
R the transmission must be in position D.
R the bonnet must be closed.
R the driver's door must be closed when you
shift from Pto Dor your seat belt must be
fastened.
R the front-passenger door and the rear
doors must be closed.
R the vehicle must not be skidding.
Activating while driving
When driving at speeds below 30 km/h, you
can only activate DISTRONIC PLUS if the vehi-
cle in front has been detected and is shown
in the multifunction display. If the vehicle in
front is no longer detected and displayed,
DISTRONIC PLUS switches off and you will
hear a tone.
X Briefly pull the cruise control lever towards
you ?, or press it up :or down A.
DISTRONIC PLUS is selected.
X Keep the cruise control lever pressed
up : or down Auntil the desired speed
is set.
X Remove your foot from the accelerator
pedal.
Your vehicle adapts its speed to that of the
vehicle in front, but only up to the desired
stored speed.
i If you do not fully release the accelerator
pedal, the DISTRONIC PLUS suspended
DISTRONIC PLUS suspended
message appears in the multifunction dis-
play. The set distance to a slower-moving
vehicle in front will then not be maintained.
You will be driving at the speed you deter-
mine by the position of the accelerator
pedal. Activating when driving towards a sta-
tionary vehicle
If the vehicle in front of you is stationary, you
can only activate DISTRONIC PLUS once your
vehicle is stationary as well.
X
Briefly pull the cruise control lever towards
you ?, or press it up :or down A.
DISTRONIC PLUS is selected.
i DISTRONIC PLUS can only be activated at
under 30 km/hi f a vehicle in front has been
detected. Therefore, the DISTRONIC PLUS
distance display in the instrument cluster
should be activated (Y page 236).
X Keep the cruise control lever pressed
up : or down Auntil the desired speed
is set.
i You can use the cruise control lever to set
the stored speed and the control on the
cruise control lever to set the specified
minimum distance (Y page 183).
Pulling away
X If the vehicle in front pulls away: remove
your foot from the brake pedal.
X Briefly pull the cruise control lever towards
you ?.
or
X Accelerate briefly.
Your vehicle pulls away and adapts its
speed to that of the vehicle in front.
Driving
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If DISTRONIC PLUS detects that the vehicle
in front has slowed down, it brakes your vehi-
cle. In this way, the distance you have selec-
ted is maintained.
If DISTRONIC PLUS detects that the vehicle
in front is driving faster, it accelerates your
vehicle, but only up to the speed you have
stored. 180
Driving systemsDriving and parking

DISTRONIC PLUS must also never be oper-
ated, activated or deactivated by a passenger
or from outside the vehicle.
DISTRONIC PLUS does not replace the park-
ing brake and must not be used for parking.
The DISTRONIC PLUS braking effect is can-
celled and the vehicle can start moving if:
R DISTRONIC PLUS is deactivated using the
cruise control lever.
R you accelerate.
R there is a malfunction in the system or an
interruption in the power supply, e.g. bat-
tery failure.
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
R the battery is disconnected.
If you wish to leave the vehicle or park it,
deactivate DISTRONIC PLUS and secure the
vehicle against rolling away.
If DISTRONIC PLUS detects that the vehicle
in front is stopping, it brakes your vehicle until
it is stationary.
Once your vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle
in front. The specified minimum distance is
set using the control on the cruise control
lever.
You will see a warning message in the multi-
function display if DISTRONIC PLUS is acti-
vated and:
R the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R the bonnet is opened.
Select Park (P)
Select Park (P) X
Shift the transmission to position Pto pre-
vent the vehicle from rolling away.
DISTRONIC PLUS is deactivated. The warn-
ing message in the multifunction display
disappears.
The horn will also sound at regular intervals if
DISTRONIC PLUS is activated and you:
R switch the engine off, open the driver's
door and take off your seat belt
R open the bonnet
The sounding of the horn alerts you to the fact
that the vehicle has been parked while DIS-
TRONIC PLUS is still activated. The sound
becomes louder if you attempt to lock the
vehicle. The vehicle is not locked until DIS-
TRONIC PLUS is deactivated.
i If the engine has been switched off, it
cannot be started again until DISTRONIC
PLUS has been deactivated.
If DISTRONIC PLUS is activated and a fault
occurs in the system or if there is a disruption
in the power supply, the Brake immedi‐ Brake immedi‐
ately
ately message is shown in the multifunction
display. Immediately depress the brake firmly
until the warning message in the multifunc-
tion display goes out or shift the transmission
to position P. DISTRONIC PLUS is deactiva-
ted.
Setting a speed X
Press the cruise control lever up :for a
higher speed or down Afor a lower speed.
X Keep the cruise control lever pressed until
the desired speed is reached.
X Release the cruise control lever.
The new speed is stored. DISTRONIC PLUS
is activated and adjusts the vehicle's speed
to the new speed stored.
X To adjust the set speed in 1 km/h incre-
ments: briefly press the cruise control 182
Driving systemsDriving an
d parking

or
X
Briefly press the cruise control lever in the
direction of arrow =.
Variable SPEEDTRONIC is selected. LIM
indicator lamp ;in the cruise control lever
lights up.
When you deactivate DISTRONIC PLUS, you
will see the DISTRONIC PLUS off DISTRONIC PLUS off message
in the multifunction display for approximately
five seconds.
i The last speed stored remains stored until
you switch off the engine.
DISTRONIC PLUS is automatically deactiva-
ted if:
R you engage the parking brake.
R you are driving slower than 25 km/h and
there is no vehicle in front, or if the vehicle
in front is no longer detected.
R ESP ®
intervenes or you deactivate ESP ®
.
R the transmission is in the P,Ror Nposition.
R the vehicle is near a radio telescope facility
(Y page 375).
R you switch off the radar sensor system
(Y page 242).
R you pull the cruise control lever towards
you in order to pull away, and the front-
passenger door or one of the rear doors is
open.
R the vehicle has skidded.
If DISTRONIC PLUS is deactivated, you will
hear a warning tone. You will see the DIS‐
DIS‐
TRONIC TRONIC PLUS
PLUSoff
offmessage in the multifunc-
tion display for approximately five seconds.
If the vehicle has been stopped by DISTRONIC
PLUS and a fault occurs in the system, the
Brake Brake immediately
immediately message appears in the
multifunction display. Depress the brake
pedal immediately so that the vehicle does
not roll away. DISTRONIC PLUS is then deac-
tivated, and the message disappears. Tips for driving with DISTRONIC PLUS General notes
The following contains descriptions of certain
road and traffic conditions in which you must
be particularly attentive. In such situations,
brake if necessary. DISTRONIC PLUS is then
deactivated.
Cornering, going into and coming out of a
bend
The ability of DISTRONIC PLUS to detect vehi-
cles when cornering is limited. Your vehicle
may brake unexpectedly or late.
Vehicles which are not driving in the mid-
dle of their lane
DISTRONIC PLUS may not detect vehicles
which are not driving in the middle of their
lane. The distance to the vehicle in front will
be too short. Driving systems
185Driving and parking Z

Activation conditions
You can activate the HOLD function if:
R the vehicle is stationary
R the engine is running or if it has been auto-
matically switched off by the ECO start/
stop function.
R the driver's door is closed or if your seat
belt is fastened.
R the parking brake is released.
R the bonnet is closed
R the selector lever is in position D,Ror Non
vehicles with automatic transmission.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until ë appears in the multifunction dis-
play.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again. G
WARNING
The vehicle's brakes are applied when the
HOLD function is activated. For this reason,
deactivate the HOLD function if the vehicle is
to be set in motion by other means (e.g. in a
car wash or by towing).
Deactivating the HOLD function The HOLD function is deactivated automati-
cally if:
R
you accelerate. On vehicles with automatic
transmission: only when the transmission
is in position Dor R.
R the transmission is in position Pon vehicles
with automatic transmission. R
you depress the brake pedal again with a
certain amount of pressure until ëdis-
appears from the multifunction display.
R you activate DISTRONIC PLUS. G
WARNING
Never get out of the vehicle when the HOLD
function is activated.
The HOLD function must never be operated
or deactivated by a passenger or from outside
the vehicle.
The HOLD function does not replace the park-
ing brake and must not be used for parking.
The braking effect of the HOLD function is
cancelled and the vehicle could roll away if:
R the HOLD function is deactivated by
depressing the accelerator pedal or the
brake pedal.
R there is a malfunction in the system or an
interruption in the power supply, e.g. bat-
tery failure.
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
R the battery is disconnected.
If you leave the vehicle or park it, deactivate
the HOLD function and secure the vehicle
against rolling away.
R the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R the bonnet is opened.
R a system fault occurs.
R the power supply is not sufficient.
In vehicles with manual transmission, you see
a warning message in the multifunction dis-
play if the HOLD function is activated and: Driving systems
187Driving and parking Z

R
the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R the bonnet is opened.
X Immediately depress the brake pedal firmly
until the warning message in the multifunc-
tion display goes out. This deactivates the
HOLD function.
A horn will also sound at regular intervals if
the HOLD function is activated and you:
R switch the engine off, open the driver's
door and take off your seat belt
R open the bonnet
The sounding of the horn alerts you to the fact
that the vehicle has been parked while the
HOLD function is still activated. If you attempt
to lock the vehicle, the tone becomes louder.
The vehicle is not locked until the HOLD func-
tion is deactivated.
i If the engine has been switched off, it
cannot be started again until the HOLD
function has been deactivated.
If there is a fault in the system or power supply
while the HOLD function is activated, the
message is shown in the multifunction dis-
play. Immediately depress the brake firmly
until the warning message in the multifunc-
tion display goes out.
On vehicles with automatic transmission, you
can also shift into position P. This deactivates
the HOLD function. PARKTRONIC
Important safety notes G
WARNING
PARKTRONIC is only an aid and may not
detect all obstacles. It is not a substitute for
attentive driving.
You are always responsible for safety and
must continue to pay attention to your imme- diate surroundings when parking and
manoeuvring. You could otherwise endanger
yourself and others.
G
WARNING
Make sure that no persons or animals are in
the manoeuvring range. Otherwise, they
could be injured.
PARKTRONIC is an electronic parking aid with
ultrasonic sensors. It indicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is activated automatically if
you:
R switch on the ignition
R shift to position D,Ror Non vehicles with
automatic transmission
R release the parking brake
PARKTRONIC is deactivated at speeds above
18 km/h. It is reactivated at lower speeds.
PARKTRONIC monitors the area around your
vehicle using six sensors in the front and four
sensors in the rear. :
Example: sensors in the front bumper,
left-hand side
Range of the sensors General notes
The sensors must be free of dirt, ice and
slush. Otherwise, they may not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
(Y page 321). 188
Driving systemsDriving an
d parking

Warning display for the front area
:
Segments on the left-hand side of the
vehicle
; Segments on the right-hand side of the
vehicle
= Segments showing operational readiness
The warning display for each side of the vehi-
cle is divided into five yellow and two red seg-
ments. PARKTRONIC is operational if yellow
segments showing operational readiness =
light up.
The gear lever position or the transmission
position of the automatic transmission deter-
mines which warning display is active when
the engine is running.
Manual transmission: Gear lever posi-
tion Warning display
Forwards gear
or
Neutral
Front area activated
Reverse gear
Rear and front areas
activated Automatic transmission:
Transmission
position Warning display
D
Front area activated
R
or N Rear and front areas
activated
P
No areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distance from the obstacle.
From the:
R
sixth segment onwards, you will hear an
intermittent warning tone for approx-
imately two seconds.
R seventh segment onwards, you will hear a
warning tone for approximately two sec-
onds. This indicates that you have now
reached the minimum distance.
Deactivating/activating PARKTRONIC :
Deactivating/activating PARKTRONIC
; Indicator lamp
If indicator lamp ;lights up, PARKTRONIC is
deactivated.
i PARKTRONIC is automatically activated
when you turn the key to position 2in the
ignition lock. 190
Driving systemsDriving and parking

Vehicles with manual transmission: the
Park
Park
Assist active Engage forward gear
Assist active Engage forward gear
Observe Observe surroundings
surroundings message appears in
the multifunction display.
Vehicles with automatic transmission: the
Park Park Assist
Assist active
activeSelect D
Select D Observe
Observe
surroundings
surroundings message appears in the mul-
tifunction display.
X Vehicles with manual transmission: while
the vehicle is stationary, shift to first gear.
Vehicles with automatic transmission:
select transmission position Dwhile the
vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
The Park Assist active Accelerate
Park Assist active Accelerate
and and brake
brake Observe
Observe surroundings
surroundings mes-
sage appears in the multifunction display.
i You will achieve the best results by wait-
ing for the steering procedure to complete
before pulling away.
X Drive forwards and be ready to brake at all
times.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
Vehicles with manual transmission: the Park
Park
Assist active Engage reverse gear Assist active Engage reverse gear
Observe Observe surroundings
surroundings message appears in
the multifunction display.
Vehicles with automatic transmission: the
Park Park Assist
Assist active
activeSelect R
Select R Observe
Observe
surroundings
surroundings message appears in the mul-
tifunction display.
X Further transmission shifts may be neces-
sary.
As soon as the parking procedure is com-
plete, the Park Assist switched off
Park Assist switched off
message appears in the multifunction dis-
play. Active Parking Assist is now deacti-
vated. PARKTRONIC is still available.
X Manoeuvre if necessary.
X Always observe the warning messages dis-
played by PARKTRONIC (Y page 189).Exiting a parking space G
WARNING
Active Parking Assist does not monitor street
traffic. In some cases, the vehicle will also
take you onto sections of the oncoming lane
when exiting a parking space.
You are responsible for safety at all times and
must pay attention to any road users
approaching or passing. Stop the vehicle if
necessary or cancel Active Parking Assist.
Active Parking Assist can only assist you with
exiting a parking space if you have parked the
vehicle using Active Parking Assist.
X Start the engine.
X Switch on the turn signal on the side facing
the street.
X Shift the transmission to position Dor R.
The Start Park Assist? Yes: OK No: Start Park Assist? Yes: OK No:
% message appears in the multifunction
display.
X To cancel the procedure: press the
% button on the multifunction steering
wheel or pull away.
or
X To exit a parking space using Active
Parking Assist: press theabutton on
the multifunction steering wheel.
The Park Assist active Accelerate Park Assist active Accelerate
and
and brake
brake Observe
Observe surroundings
surroundings mes-
sage appears in the multifunction display.
X Release the multifunction steering wheel.
X Reverse the vehicle or drive forwards, being
ready to brake at all times. Do not exceed
a maximum speed of approximately
10 km/h when exiting a parking space.
Otherwise, Active Parking Assist will be
cancelled.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
X Shift the transmission to position Dor Ras
required while the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction. Driving systems
195Driving and parking Z

Warning and display messages in the
multifunction display Example: vehicles with automatic transmission
X Activate ATTENTION ASSIST using the on-
board computer (Y page 237).
Symbol :appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You then hear an inter-
mittent warning tone twice and the Atten‐
Atten‐
tion tion Assist:
Assist: Drowsiness
Drowsiness detected
detectedmes-
sage appears in the multifunction display.
X If necessary, take a break.
X Press the abutton to confirm the mes-
sage.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. This will only
happen if ATTENTION ASSIST still detects
typical indicators of fatigue or increasing lap-
ses in concentration.
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con-
tinue your journey if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break. Speed Limit Assist
Important safety notes Speed Limit Assist shows you detected speed
limits in the multifunction display. Data from
the navigation system is also used for this purpose. If a traffic sign indicating a speed
limit or the end of a speed limit is detected,
it is shown in the multifunction display. If
Speed Limit Assist does not detect any traffic
signs, the speed limit from the digital road
map is taken and shown in the display.
Speed Limit Assist detects the traffic signs
with a camera attached behind the top of the
windscreen.
:
Speed Limit Assist camera G
WARNING
Speed Limit Assist is only an aid and may
detect speed limit signs incorrectly or not at
all.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray.
R there is glare, e.g. from the sun or from
oncoming traffic.
R the windscreen is dirty, misted up or cov-
ered, for instance by a sticker, in the vicinity
of the camera.
R the traffic signs are covered, for instance
by dirt, snow or trees.
R the traffic signs are poorly illuminated.
R there are ambiguous traffic signs, for
instance near roadworks or on multi-lane
roads.
Traffic signs always have priority over the
Speed Limit Assist display. Speed Limit Assist
cannot detect road and traffic conditions. It is
not a substitute for attentive driving. 202
Driving systemsDriving and parking