Residual heat (climate control)
........136
Restrain tsystem
see SRS (Supplemental Restraint
System)
Rev counter ........................................ 212
Reverse gear Engaging (automatic transmis-
sion) ............................................... 154
Engaging (manual transmission) ....154
Reversing camera
Cleaning instructions .....................290
Function/notes ............................. 192
Reversing lamp (display message) ..240
Roll bar Display message ............................ 236
Operation ........................................ .44
Rolle rblind
see Roller sunblind
Roller sunblind
Panorama sliding sunroof ................97
Rea rwindow .................................. 271
Roof
see Soft top
Roof load (maximum)
see Technical data
Route
see Route guidance (navigation)
Route guidance (navigation) ............218 S
Safety Childre ninthe vehicle ..................... 51
Child restraint systems ....................51
Safety systems
see Driving safety systems
Seat
Seat backres tdisplay message .....251
Seat belt
Adjusting the driver's and front-
passenger sea tbelt ......................... 49
Belt force limiter .............................. 50
Belt tensioner .................................. 50
Cleaning ......................................... 292
Display message ............................ 236
Fastening ......................................... 47
Important safety guidelines .............46
Rea rseat belt status indicator .........49 Releasing
......................................... 49
Switching bel tadjustment on/off
(on-board computer) ......................230
Warning lamp (function) ................... 49
Seat belts
Warning lamp ................................. 255
Seats
Adjusting (electrically). ..................102
Adjusting (manually and electri-
cally) .............................................. 102
Adjusting the 4-way lumba rsup-
por t................................................ 105
Adjusting the head restraint ..........103
Cleaning the cover .........................292
Correct driver's sea tposition ........100
Folding the backrests forward/
back ............................................... 104
Important safety notes ..................101
Multicontour sea t.......................... 105
Seat heating problem ....................106
Seat ventilation problem ................107
Storing settings (memory func-
tion) ............................................... 112
Switching AIRSCAR Fon/off .......... 107
Switching sea theating on/off .......106
Switching the sea tventilation on/
off .................................................. 106
Sensors (cleaning instructions) .......290
Service see ASSYST PLUS service interval
display
Service menu (on-board computer) .224
Service products Brake fluid ..................................... 336
Coolant (engine) ............................ 337
Engine oil ....................................... 335
Fuel ................................................ 334
Important safety notes ..................333
Settings
Factory (on-board computer) .........231
On-board computer .......................224
Settin gthe air distribution ...............133
Settin gthe airflow ............................ 134
Sidebag ................................................ 43
Side windows Convenience closing ........................84
Convenience opening ......................83
Important safety notes ....................8216
Index
When the roll bars are extended, the rear
head restraints also extend automatically.
Oncet he roll bars are extended, you can no
longer lower the rear head restraints. The soft
top can no longer be operated. In this case,
visit the nearest qualified specialist work-
shop. G
WARNING
If the roll bar is malfunctioning, the A
Malfunction Consult workshop message
appears in the multifunction display. The roll
bars will then not be extended in the event of
an accident .This could result in severe or
even fatal injuries to you and other occupants.
In this case, visit aqualified specialist work-
shop immediately and have the roll bar
checked. PRE-SAFE
®
(preventative occupant
protection)
PRE-SAFE ®
takes pre-emptive measures to
protect occupants in certain hazardous sit-
uations.
PRE-SAFE ®
intervenes:
R in emergency braking situations, e.g. if BAS
is activated or for vehicles with DISTRONIC
PLUS, BAS PLUS intervenes powerfully
R if the radar sensor system detects an immi-
nent danger of collision in certain situa-
tions (on vehicles with DISTRONIC PLUS)
R in critical driving situations, e.g. when phys-
ical limits are exceed and the vehicle under-
steers or oversteers severely
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detec-
ted:
R the front seat belts are pre-tensioned.
R vehicles with the memory function: it
adjusts the front-passenger seat if it is in
an unfavourable position. R
vehicles with amulticontour seat: the air
pressure in the seat side cushions and in
the backrest side bolsters is increased.
R if the vehicle skids, the front side windows
and, on the Coupé,t he panorama sliding
sunroof, are closed so that only asmall gap
remains.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ®
slackens
the belt pretensioning. The air pressure in the
side bolsters on the multicontour seat is
reduced again. All settings made by PRE-
SAFE ®
can then be reversed.
If the seat belts are not released:
X Move the backrest or seat back slightly, but
only when the vehicle is stationary.
The belt pretensionin gisreduced and the
locking mechanism is released. G
WARNING
When adjusting the seat, make sure that
nobody can become trapped.
! Make sure that there are no objectsint he
footwell or behind the seats when moving
the seat back. There is arisk that the seats
and/or the objectsc ould be damaged.
More information about seat-belt adjust-
ment, aconvenience function integrated into
PRE-SAFE ®
,c an be found in the "Seat-belt
adjustment" section (Y page 49). NECK-PRO head restraints
The NECK-PRO head restraints increase pro-
tection to the driver's and front passenger's
head and neck.Tot his end, the NECK-PRO
head restraints on the driver's and front-
passenger seats are moved forwards and
upwards in the event of arear-end collision of
ac ertain severity. This provides better head
support. Occupant safety
45Safety Z
Example: Coupé
Seat-belt extender
:is extende dwhent he
respective door is closed and the key is
turned to position 1or 2in the ignition lock.
Yo uc an also extend seat-belt extender :by
using the seat-belt extende rbutton in the
centre console. X
Press th eseat-belt extender button.
Seat-belt extender :extends. G
WARNING
The seat-belt extender must be retracted
when th evehicl eisinm otion.Only then can
the sea tbelt fit properly on the body and per-
form its protective function.
Seat-belt extender :is retracted again if:
R the belt tongue is engaged in the seat belt
buckle.
R the belt tongue is not engaged in the seat
belt buckle within 60 seconds.
R the respective door is opened.
R the key is turned to position 0in the ignition
lock. R
you release the seat backrest and fold it
forwards.
R nobody is sitting on the front-passenger
side after approximately five seconds.
If you press the seat-belt extender button
after this, seat-belt extender :will not
extend. Example: Coupé
X
Adjust the seat and move the backrest to
an almost vertical position (Y page 100).
X Pull the seat belt smoothly out of seat-belt
extender :.
X Without twistin git, guide the shoulder sec-
tion of the seat belt across the middle of
your shoulder and the lap section across
your hips.
X Engage belt tongue ;in buckle =.
Seat-belt adjustment:ifn ecessary, the
driver's and front-passenger seat belts
automatically adjust to the upper body
(Y page 49).
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
The rear seat belts are equipped with achild
seat lock (Y page 52). If you pull out the seat
belt fully and then allow the inertia reel to
retract it, the child-seat lock is activated. To
deactivat ethe child seat lock, unfasten the 48
Occupant safetySafety
seat belt and guide the belt tongue to the belt
sash guide.
For more information aboutr eleasing the seat
belt with release button ?,see "Releasing
seat belts" (Y page 49).
Seat belt adjustment The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants.
The belt strap is tightened slightly when:
R you engage the belt tongue in the belt
buckle and you then turn the key to position
2 in the ignition lock.
R the key is in position 2in the ignition lock
and you then engage the belt tongue in the
buckle oncet he seat-belt extender has
retracted.
The seat-belt adjustment will apply acertain
tightening forc eifany slack is detected
between the occupan tand the sea tbelt. Do
not hold on to the seat belt tightly while it is
adjusting. You can switch the seat-belt
adjustment on and off in the on-board com-
puter (Y page 230).
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function .More
information about PRE-SAFE ®
can be found
in the "PRE-SAFE ®
(preventativ eoccupant
protection)" section (Y page 45).
Releasing seat belts X
Press release button ?(Ypage 47) and
guide belt tongue ;back towards seat
belt extender :.
! Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt. Dam-
aged seat belts can no longer fulfil their
protective function and must be replaced.
Consult aMercedes-BenzS ervice Centre. Belt warning for driver and front
passenger The
7 seat belt warning lamp in the instru-
ment cluster is areminder for all occupants
to fasten their seat belts. It may light up con-
tinuously or flash. In addition, ther emay be a
warning tone.
The 7 seat belt warning lamp goes out and
the warning tonec eases when the driver and
the fron tpassenger have fastened their seat
belt.
For certain countries only: regardless of
whether th edriver or th efront passenger
have fastened their seat belts, the 7seat
beltw arning lamp light supfor six seconds
after th eengineiss tarted. It then goes out if
th ed river and th efront pa ssenger have fas-
tene dtheir seat belts.
i For mor einformatio nonthe7 seat
belt warning lamp, see "Warning and indi-
cator lamps in th einstrumen tcluster, seat
belt" (Y page 255).
Rea rseat belt statu sindicator The rear-compartmen
tseat belt status indi-
cator tells you if the rear passengers have
their seat belts fastened.
The rear-compartment seat belt status indi-
cator indicates the rear seat on which the belt
is fastened.
The rear-compartment seat belt status indi-
cator appears in the multifunction display for
around 30 seconds if:
R you drive off and reach aspeed of approx-
imately 10 km/h.
R the rear passengers fasten or unfasten
their seat belts while the vehicle is in
motion.
R someon egets in or out of the vehicle and
the vehicle drives off again. Occupant safety
49Safety Z
Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviation sare possible. Please
not ethat your vehicle may not be equipped
with all feature sdescribed. This also
applies to safety-relevan tsystems and
functions.
i Pleas ereadt he information on qualified
specialist workshop s(Ypage 22). Correct driver's sea
tposition Observe th
esafety guidelines on seat adjust-
men t(Ypage 101).
X Chec kwhether you have adjusted seat =
properly.
Manual and electrical seat adjustment
(Y page 102)
Electrical seat adjustment (Y page 102)When adjusting the seat, make sure:
R
you are as far away from the driver's air-
bag as possible.
R you are sitting in anormal upright posi-
tion.
R you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.
R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 103).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the centre of the head restraint.
Observe the safety guidelines on steering
wheel adjustment (Y page 107).
X Check whether steering wheel :is adjus-
ted properly.
Adjust the steering wheel manually
(Y page 108)
Adjustingt he steering wheel electrically
(Y page 108)
When adjusting the steering wheel, make
sure:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the instru-
ment cluster clearly.
Observe the safety guidelines for seat belts
(Y page 46).
X Check whether you have fastened seat
belt ;properly (Y page 47).100
Correct driver's seat positionSeats, steering wheela
nd mirrors
driver'
sseat automatically switches to the
highest level.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation The seat ventilation has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switc hoff electrical consumers which you
do not need, such as the rear window heat-
ing or interior lighting. AIRSCARF (Cabriolet)
Switching on/off G
WARNING
Very hot air can flow out of the AIRSCARF
vent sint he head restraint swhen AIRSCARF
is in operation .This can cause burns on unpro-
tected skin near the AIRSCARF vents.L ower
the heating output in good time, when neces-
sary.
The AIRSCARF function warms the head and
neck area of vehicle occupants with warm air.
The warm air flows out of the holes in the head
restraints.
The three red indicator lamps in the button
indicate the heating level you have selected. X
Make sure that the key is in position 2in
the ignition lock.
X To activate: press button :.
Three red indicator lamps in the button light
up. The blower starts up after apreheating
phase of seven seconds.
X Press button :repeatedly until the
desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
You can use the adjustable fins on the head
restraint to adjust the height of the current of
air blown out according to your height.
Make sure that there are no objectsc overing
the intake grille on the back of the driver's
seat backrest.
i The blower continues running for seven
seconds to cool down the heating ele-
ments.
i If the battery voltage is too low, AIRSCARF
may switch off. Steering wheel
Important safety notes
G
WARNING
The electrically adjustable steering wheel can
still be adjusted when there is no key in the
ignition lock. Therefore, do not leave children
unsupervised in the vehicle, as they could
become trapped if the steering wheel is adjus-
ted. G
WARNING
Only adjust the steering wheel when the vehi-
cle is stationary and do not pull away until the
steering wheel adjustment mechanism is
locked in position. You might otherwise drive
without the steering wheel adjustment mech-
anism being locked in position. As aresult,
you could be distracted from road and traffic
conditions by an unintentional movement of Steering wheel
107Seats, steering wheela nd mirrors
Z
the steering whee
land thereb ycause an acci-
dent.
However, the steerability of the vehicl eisnot
affected. Adjusting the steering whee
lman-
ually :
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position
(fore-and-aft adjustment)
X Pus hrelease lever :dow ncompletely.
The steerin gcolumn is unlocked.
X Adjust the steerin gwheel to the desired
position.
X Push release lever :up completely.
The steerin gcolumn is locked.
X Check if the steerin gcolumn is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction. Adjusting the steering wheel electri-
cally
:
To adjust the steerin gwheel height
; To adjust the steerin gwheel position
(fore-and-aft adjustment)
i Related topics:
R EASY-ENTRY/EXIT feature
(Y page 108)
R Storing settings (Y page 112) EASY-ENTRY/EXIT feature
Important safety notes The EASY-ENTRY/EXIT feature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board com-
puter (Y
page 230). G
WARNING
Make sure that nobody can become trapped
when you activate the EASY-ENTRY/EXIT fea-
ture.
If there is arisk of someone becoming trap-
ped, stop the adjustmen tprocedure. To halt
the procedure:
R move the switch for steering whee ladjust-
ment in the opposite directio ntothat in
which the steering whee lismoving.
R press one of the memory function position
buttons.
Never leave children unsupervise dinthe vehi-
cle. They could open the driver' sdoor and 108
Steerin
gwheelSeats, steering wheel and mirrors
X
Make sure that the key is in position 1or
2 in the ignition lock.
X Press button :for the left-hand exterior
mirror or button ;for the right-hand exte-
rior mirror.
The indicator lamp in the corresponding
button lights up in red.
The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button =as long
as the indicator lamp is lit.
X Press adjustment button =up, down, to
the right or to the left until the exterior mir-
ror is set to aposition that provides you
with agood overview of traffic conditions.
Folding the exterior mirrors in or out
electrically X
Make sure that the key is in position 1or
2 in the ignition lock.
X Briefly press button :.
Both exterior mirrors fold in or out. i
Make sure that the exterior mirrors are
always folded out fully while the vehicle is
in motion, as they may otherwise vibrate.
Setting the exterior mirrors If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must
be reset. The exterior mirrors will otherwise
not fold in when you select the "Fold in mir-
rors when locking" function in the on-board
computer (Y
page 230).
X Make sure that the key is in position 1in
the ignition lock.
X Briefly press button :.
Folding the exterior mirrors in or out
automatically If the "Fold in mirrors when locking" function
is activated in the on-board computer
(Y
page 230):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the out-
side.
R the exterior mirrors fold out again automat-
ically as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
i The mirrors do not fold out if they have
been folded in manually.
Exterior mirror out of position If an exterior mirror has been pushed out of
position, proceed as follows:
X
Vehicles without electrically folding
exterior mirrors: move the exterior mirror
into the correct position manually.
X Vehicles with electrically folding exte-
rior mirrors: press the mirror-folding but-
ton (Y page 110) repeatedly until you hear
the mirror engage in position.
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(Y page 109). 110
MirrorsSeats, steering wheela
nd mirrors