MERCEDES-BENZ SLK-CLASS ROADSTER 2015 Owners Manual

Cornering, going into and coming out of abend
The ability of DISTRONIC PLUS to detect vehi-cles when cornering is limited. Your vehicle
may brake unexpectedly or late.
Vehicles traveling on a different line
DISTRONIC PLUS may not detect vehicles
traveling on a different line. The distance to
the vehicle in front will be too short.
Other vehicles changing lanes
DISTRONIC PLUS has not detected the vehi-
cle cutting in yet. The distance to this vehiclewill be too short.
Narrow vehicles
DISTRONIC PLUS has not yet detected the
vehicle in front on the edge of the road,
because of its narrow width. The distance to
the vehicle in front will be too short.
Obstructions and stationary vehicles
DISTRONIC PLUS does not brake for obsta-
cles or stationary vehicles. If, for example, the
detected vehicle turns a corner and reveals
an obstacle or stationary vehicle, DISTRONIC PLUS will not brake for these.
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Driving and parking
Z

Crossing vehicles
DISTRONIC PLUS may mistakenly detect
vehicles that are crossing your lane. Activat-
ing DISTRONIC PLUS at traffic lights with
crossing traffic, for example, could cause
your vehicle to pull away unintentionally.
Dynamic handling package
General notes
The adjustable damping system adapts to the current driving conditions. The adjustment
depends on whether you have selected sport
or comfort mode. Your selection remains
stored even if you remove the SmartKey from
the ignition lock.
Sports tuning
The firmer setting of the suspension tuning in
sports mode ensures even better contact
with the road. Select this mode if you want
more direct contact with the road when
employing a sporty driving style, e.g. on wind-
ing country roads. X
If indicator lamp :
is not lit:press but-
ton ;.
Indicator lamp :lights up. You have selec-
ted the suspension for a sporty driving
style.
Comfort tuning
Select comfort mode if you prefer a more
comfortable driving style.
X If indicator lamp :
is lit:press but-
ton ;.
Indicator lamp :goes out. You have selec-
ted the suspension for a comfortable driv-
ing style.
HOLD function
General notes
The HOLD function can assist the driver in the
following situations: R when pulling away, especially on steep
slopes
R when maneuvering on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Important safety notes
GWARNING
When leaving the vehicle, it can still roll away despite being braked by the HOLD function if:
R there is a malfunction in the system or in
the voltage supply.
R the HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal, e.g. by a vehicle occupant.
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Driving and parking

Rthe electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R the battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R when towing the vehicle
R in the car wash
Deactivating the HOLD function( Y page 181).
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 your seat belt
is fastened
R the hood is closed
R the electric parking brake is released
R the selector lever is in position D,R or Non
vehicles with automatic transmission
R DISTRONIC PLUS is deactivated
Activating the HOLD function
XMake sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until :
HOLDappears in the multifunction
display.
The HOLD function is activated. You can
release the brake pedal.
iIf depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
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 you shift the transmission to position Pon
vehicles with automatic transmission.
R you apply the brakes again with a certain
amount of pressure until
HOLDdisappears
from the multifunction display.
R you secure the vehicle using the electric
parking brake.
R you activate DISTRONIC PLUS.
iAfter a time, the electric parking brake
secures the vehicle and relieves the service
brake.
The electric parking brake automatically
secures the vehicle if the HOLD function is
activated 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 hood is opened.
R a system malfunction occurs.
R the power supply is not sufficient.
If there is a malfunction in the vehicle elec-
tronics, a warning message may also appear
in the multifunction display.
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Brake ImmediatelyBrake Immediately
XImmediately depress the brake firmly until
the warning message in the multifunction
display goes out.
The HOLD function is deactivated.
In vehicles with automatic transmission:
Shift to 'P'Shift to 'P'.
X Shift the transmission to position Pto pre-
vent the vehicle from rolling away.
The HOLD function is deactivated. The
warning message in the multifunction dis-
play disappears.
The 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 remove your seat belt.
R open the hood.
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.
iIf the engine has been switched off, it
cannot be started again until the HOLD
function has been deactivated.
PARKTRONIC
Important safety notes
PARKTRONIC is an electronic parking aid with ultrasonic sensors. It indicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is only an aid. It is not a replace-
ment for your attention to your immediate
surroundings. You are always responsible for
safe maneuvering, parking and exiting a park-
ing space. When maneuvering, parking or
pulling out of a parking space, make sure that there are no persons, animals or objects in
the area in which you are maneuvering.
!When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer drawbars.
PARKTRONIC does not detect such objects
when they are in the immediate vicinity of
the vehicle. You could damage the vehicle
or the objects.
The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic
car wash, the compressed-air brakes on a
truck or a pneumatic drill could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
PARKTRONIC is activated automatically when you:
R switch on the ignition
R move the selector lever to position D,R or
N on vehicles with automatic transmission
R release the electric parking brake.
PARKTRONIC is deactivated at speeds above
11 mph (18 km/h). It is reactivated at lowerspeeds.
PARKTRONIC monitors the area around your
vehicle using six sensors in the front bumper and four sensors in the rear bumper.
Range of the sensors
General notes
PARKTRONIC does not take objects into con- sideration that are:
R below the detection range, e.g. people, ani-
mals or objects.
R above the detection range, e.g. overhang-
ing loads, truck overhangs or loadingramps.
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:Sensors in the front bumper, left-hand
side (example)
Side view
Top view
The sensors must be free from dirt, ice or
slush. They can otherwise not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them(Y page 289). Front sensors
CenterApprox. 40 in (approx.
100 cm)
CornersApprox. 24 in (approx.
60 cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32 in (approx.
80 cm)
Minimum distance
CenterApprox. 8 in (approx.
20 cm)
CornersApprox. 6 in (approx.
15 cm)
If there is an obstacle within this range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown.
Warning displays
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
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The warning displays show the distance
between the sensors and the obstacle. The
warning display for the front area is located
on the dashboard above the center air vents.
The warning display for the rear area is loca-
ted between the roll bars.
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 selector lever position or selected auto-
matic transmission position and the direction
in which the vehicle is rolling determine which
warning display is active when the engine is
running.
Manual transmission:
Gear lever posi- tionWarning display
Forwards gear or
NeutralFront area activated
Reverse gear or
the vehicle is rolling backwardsRear and front areas
activated
Automatic transmission:
Transmission positionWarning display
DFront area activated
R ,N or the vehicle
is rolling back- wardsRear and front areas
activated
PNo 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
:Indicator lamp
;Deactivates/activates PARKTRONIC
If indicator lamp :is on then PARKTRONIC is
deactivated. Parking Guidance is also deacti- vated.
iPARKTRONIC is automatically activated
when you turn the SmartKey to position 2in
the ignition lock.
184Driving systems
Driving and parking

Problems with PARKTRONIC
ProblemPossible causes/consequences andMSolutions
Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds,
and the indicator lamp
in the PARKTRONIC
button lights up.PARKTRONIC has malfunctioned and has switched off.
X If problems persist, have PARKTRONIC checked at a qualified
specialist workshop.
Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is deacti-
vated after approx-
imately five seconds.The PARKTRONIC sensors are dirty or there is interference. X Clean the PARKTRONIC sensors ( Ypage 289).
X Switch the ignition back on.
The problem may be caused by an external source of radio or
ultrasound waves. XSee if PARKTRONIC functions in a different location.
Parking Guidance
Important safety notes
Parking Guidance is an electronic parking aid
with ultrasound. Ultrasound is used to meas- ure the road on both sides of the vehicle. A
suitable parking space is indicated by the
parking symbol. You receive steering instruc-
tions when parking. You may also use
PARKTRONIC ( Ypage 182).
Parking Guidance is only an aid. It is not a
replacement for your attention to your imme-
diate surroundings. You are always responsi- ble for safe maneuvering, parking and exitinga parking space. When maneuvering, parking
or pulling out of a parking space, make sure
that there are no persons, animals or objects
in the area in which you are maneuvering.
GWARNING
If objects are located above the detection
range, Parking Guidance may provide steering instructions too soon. You may cause a colli-
sion as a result. There is a risk of an accident.
If objects are located above the detection
range, stop and switch off Parking Assist.
!If unavoidable, you should drive over
obstacles such as curbs slowly and not at a sharp angle. Otherwise, you may damage
the wheels or tires.
When PARKTRONIC is deactivated, Parking
Guidance is also unavailable.
Parking Guidance may also display spaces
not suitable for parking, e.g.:
R where parking or stopping is prohibited
R in front of driveways or entrances and exits
R on unsuitable surfaces
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Use Parking Guidance for parking spaces: Rthat are parallel to the direction of travel
R that are on straight roads, not bends
R that are on the same level as the road, i.e.
not on the pavement, for example. Parking
Guidance may not detect flat curbs
Parking tips:
R On narrow roads, drive as close to the park-
ing space as possible.
R Parking spaces that are littered or over-
grown might be identified or measured
incorrectly.
R Parking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
R Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R Pay attention to the PARKTRONIC(Y page 183) warning messages during the
parking procedure.
R When transporting a load which protrudes
from your vehicle, you must not use Parking
Guidance.
R Never use Parking Guidance with snow
chains or an emergency spare wheel moun-
ted.
R Make sure that the tire pressures are
always correct. This has a direct effect on
the steering instructions.
R The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the
location. In some cases, Parking Guidance
may guide you too far or not far enough into
a parking space. In some cases, it may also
lead you across or onto the curb. If neces-
sary, cancel the parking procedure with
Parking Guidance.Detecting parking spaces
:Detected parking space on the left
;Parking symbol
=Detected parking space on the right
Parking Guidance is automatically activated
when you drive forwards. The system is
operational at speeds of up to approximately
22 mph (35 km/h). While in operation, the
system independently locates and measures
parking spaces on both sides of the vehicle.
When driving at speeds below 19 mph
(30 km/h), you will see parking symbol ;as
a status indicator in the instrument cluster.
When a parking space has been detected, an arrow towards the right =or the left :also
appears. Parking Guidance only displays
parking spaces on the front-passenger side
as standard. Parking spaces on the driver's
side are displayed as soon as the turn signal
on the driver's side is activated. To park on
the driver's side, you must leave the driver's
side turn signal switched on until you have
engaged reverse gear.
Parking Guidance will only detect parking spaces:
R that are parallel to the direction of travel
R that are at least 5 ft (1.5 m) wide
R that are at least 4.3 ft (1.3 m) longer than
your vehicle
A parking space is displayed while you are
driving past it, and until you are approx-
imately 50 ft (15 m) away from it.
186Driving systems
Driving and parking

Parking
Moving the vehicle into the stop position
X Stop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.
X Vehicles with manual transmission: shift to
reverse gear.
Vehicles with automatic transmission: shift into position R.
The multifunction display shows the
Check Vehicle Surroundings Press
'OK' to Confirmmessage.
X Press the abutton on the multifunction
steering wheel to confirm.
The multifunction display switches to Park-
ing Guidance.
Depending on your distance from the park-
ing space, the
Please Drive Backward
message will appear in the multifunction
display.
X If necessary, reverse towards the parking
space. This is indicated by an arrow point-
ing backwards.
Continue backing up until you hear a tone.
Stop – the stop position has been reached.
The arrow is white. The
PleaseSteerWheeltotheRight
orPlease Steer Wheel to the Left
message appears in the multifunction dis-
play. Backing up into the parking space
X
While the vehicle is stationary, turn the
steering wheel in the specified direction
until the arrow is white and a warning tone
sounds.
X To reverse into the parking space: main-
tain the steering wheel angle and reversecarefully.
X Stop as soon as you hear a warning tone,
The vehicle has reached the position in
which you need to countersteer. The
PleaseSteerWheeltotheRight
orPlease Steer Wheel to the Left
message appears in the multifunction dis-
play.
X To countersteer: while the vehicle is sta-
tionary, turn the steering wheel in the
specified direction until the arrow is white
and a warning tone sounds.
X To reverse into the parking space: main-
tain the steering wheel angle and reversecarefully.
X Stop as soon as you hear a warning tone, at
the latest when PARKTRONIC sounds the
continuous warning tone. The
Parking Guidance Finishedmes-
sage appears in the multifunction display
and a tone sounds. You may be asked to
steer in a different direction and then
change gear. In this case, further displays
in the multifunction display will direct you
to the final position.
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XManeuver if necessary.
X Always observe the warning messages dis-
played by PARKTRONIC ( Ypage 183).
Canceling Parking Guidance
X
Press the PARKTRONIC button on the cen-
ter console ( Ypage 184).
Parking Guidance is canceled immediately
and PARKTRONIC is deactivated.
Parking Guidance is canceled automatically if it is no longer possible to guide you into the
parking space, or if a malfunction occurs.
The parking space symbol goes out and a
warning tone sounds. The
Parking GuidZ
anceCanceledmessage appears in the mul-
tifunction display.
ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways.
It is active in the range between 50 mph
(80 km/h) and 112 mph (180 km/h).
If ATTENTION ASSIST detects typical indica-
tors of fatigue or increasing lapses in con-
centration on the part of the driver, it sug-
gests you take a break.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account: R your personal driving style, e.g. steering
characteristics
R journey details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
R if there is a strong side wind R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R if you are currently using COMAND or mak-
ing a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
ATTENTION ASSIST is only an aid to the
driver. It might not always recognize fatigue
or increasing inattentiveness in time or fail to recognize them at all. The system is not a
substitute for a well-rested and attentivedriver.
Warning and display messages in the
multifunction display
X Activate ATTENTION ASSIST using the on-
board computer ( Ypage 203).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Take a Break!
message appears in the multifunction dis-
play.
X If necessary, take a break.
X Press the aor% button to confirm
the message.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break and ATTENTION ASSIST
still detects increasing lapses in concentra-
tion, you will be warned again after
15 minutes at the earliest.
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again 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.
188Driving systems
Driving and parking