Problem Possible causes/consequences and
M SolutionsYou have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 312).
or
X Jump-start the vehicle (Y page 313).
or
X Consult a qualified specialist workshop. Vehicles without
DIRECT SELECT lever
only:
The engine cannot be
started using the
SmartKey. The steering lock is mechanically blocked.
X
Remove the SmartKey and reinsert it into the ignition lock. While
doing this, turn the steering wheel in both directions. The engine cannot be
started
using KEYLESS-
GO. The SmartKey is in
the vehicle. A door is open. Therefore, the SmartKey cannot be detected as
easily.
X
Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock.78
SmartKey
Opening/closing
Doors
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint
system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger
compartment or trunk unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident Unlocking and opening doors from
the inside
! The side windows will not open/close if
the battery is discharged or if the side
windows have iced up. It will then not be
possible to close the door. Do not attempt
to force the door closed. You could
otherwise damage the door or the side
window.
You can open a door from inside the vehicle
even if it has been locked. X
Pull door handle ;.
If
the door is locked, locking knob : pops
up. The door is unlocked and can be
opened.
i When a door is opened, the side window
on that side opens slightly. When the door
is closed, the side window closes again. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. Doors
79
Opening/closing Z
X
Turn the mechanical key counter-clockwise
to position 1.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the
SmartKey.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered
(Y page 70). Locking the vehicle (mechanical key)
If
the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
X Open the driver's door.
X Close the front-passenger door and the
trunk lid.
X Press the locking button (Y page 79).
X Check whether the locking knob on the
front-passenger door is still visible. If
necessary,
press the locking knob down by
hand ( Y page 79).
X Close the driver's door.
X Take the mechanical key out of the
SmartKey (Y page 74).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. 1
Locking
X Turn the mechanical key clockwise as far
as it will go to position 1.
X Turn the mechanical key back and remove
it. X
Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the
SmartKey. Trunk
Important safety notes
G
WARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases
may enter the vehicle interior resulting
in unconsciousness and death. G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint
system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. Trunk
81
Opening/closing Z
Useful information ............................
106
Correcting the driver's seat posi-
tion ..................................................... 106
Seats .................................................. 107
Steering wheel .................................. 113
Mirrors ............................................... 115
Memory function .............................. 117 105Seats, steering wheel and mirrors
Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible.
Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: ( Y page 24).Correcting the driver's seat position
X
Observe the safety guidelines on seat
adjustment ( Y page 107).
X Make sure that seat = is adjusted
properly.
Electrical seat adjustment ( Y page 108)
When adjusting the seat, make sure that:
R you
are as far away from the driver's air bag
as possible.
R you are sitting in a normal upright position.
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
adjusted properly.
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 center of the head restraint.
X Observe the safety guidelines on steering
wheel adjustment ( Y page 113).
X Make sure that steering wheel : is
adjusted properly.
Adjusting the steering wheel electrically
(Y page 113)
When adjusting the steering wheel, make
sure that:
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
instrument cluster clearly.
X Observe the safety guidelines for seat belts
(Y page 53).
X Check whether you have fastened seat
belt ; properly
(Y page 55).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be
routed in your pelvic area across the hip
joints
X Before starting off, adjust the rear-view
mirror and the exterior mirrors in such a
way
that you have a good view of road and
traffic conditions (Y page 115).
X Vehicles with a memory function: save
the
seat, steering wheel and exterior mirror
settings with the memory function
(Y page 117). 106
Correcting the driver's seat position
Seats, steering wheel and mirrors
Seats
Important safety notes
G
WARNING
The seats can still be adjusted when there is
no key in the ignition lock. For this reason,
children should never be left unsupervised in
the vehicle. They could otherwise become
trapped when adjusting the seat. G
WARNING
Make sure that the back of your head is
supported at eye level by the central area of
the head restraint. If your head is not
supported
correctly by the head restraint, you
could suffer a severe neck injury in the event
of an accident. Never drive if the head
restraints are not engaged and set correctly. G
WARNING
In order to avoid possible loss of vehicle
control, all seat, head restraint, steering
wheel and rear view mirror adjustments, as
well as fastening of seat belts, must be done
before setting the vehicle in motion. G
WARNING
Do not adjust the driver's seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never
travel in a moving vehicle with the seat
backrest in an excessively reclined position as
this can be dangerous. You could slide under
the seat belt in a collision. If you slide under
it, the seat belt would apply force at the
abdomen or neck. This could cause serious or
fatal injuries. The seat backrest and seat belts
provide the best restraint when the wearer is
in a position that is as upright as possible and
seat belts are properly positioned on the
body. G
WARNING
Your seat belt must be adjusted so that you
can correctly fasten your seat belt. Observe the following points:
R
adjust
the seat backrest until your arms are
slightly angled when holding the steering
wheel.
R adjust the seat to a comfortable seating
position that still allows you to reach the
accelerator/brake pedal safely. The
position should be as far back as possible
with the driver still able to operate the
controls properly.
R adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level.
R never place hands under the seat or near
any moving parts while a seat is being
adjusted.
Failure to do so could result in an accident
and/or serious personal injury. G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats
than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat Seats
107
Seats, steering wheel and mirrors Z
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats.
Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating
materials, e.g. blankets, coats, bags,
seat covers, child seats or booster seats.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see "Interior care".
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating
materials, e.g. blankets, coats, bags,
seat covers, child seats or booster seats.
! Make sure that there are no objects in the
footwell or behind the seats when resetting
the seats. There is a risk that the seats
and/or the objects could be damaged.
i The head restraints in the front seats are
installed with the NECK-PRO system
(Y page 51). For this reason, it is not
possible to remove the head restraints
from the front seats.
For more information, contact a qualified
specialist workshop. i
Further related subjects:
R Through-loading feature in the rear
bench seat (Coupe) (folding the rear
bench seat forward) ( Y page 270) Adjusting the seats
:
Head restraint height
; Seat cushion angle
= Seat height
? Seat fore-and-aft adjustment
A Backrest angle
i If PRE-SAFE ®
is triggered, the front-
passenger seat will be moved to a better
position if it was previously in an
unfavourable position.
i You can store the seat settings using the
memory function ( Y page 117).
i Vehicles with the through-loading
feature: if you fold down a rear seat
backrest, the respective front seat is
moved forwards slightly in order to avoid
contact. 108
Seats
Seats, steering wheel and mirrors
Adjusting the head restraints
Adjusting the head restraints
electrically X
To adjust the head restraint height: slide
switch for head restraint adjustment : up
or down in the direction of the arrow.
Rear seat head restraints Lowering and extending the rear seat
head restraints from the front (Cabriolet)
G
WARNING
For safety reasons, always drive with the rear
head restraints in the raised position when
the rear seats are occupied.
Keep
the area around head restraints clear of
articles (e.g. clothing) to not obstruct the
folding operation of the head restraints. X
Make sure that the SmartKey is in position
2 in the ignition lock.
X To lower: press button :.
The head restraints move to the lowest
position. If AIRCAP is activated, the right-hand
indicator lamp on the AIRCAP button goes
out.
X To extend: press button : again.
The head restraints only move into the
central position if AIRCAP is activated and
no rear seat belt has been fastened.
If AIRCAP is activated, the right-hand
indicator lamp on the AIRCAP button
comes on.
i More detailed information about AIRCAP
can be found on (Y page 97). Manually lowering the head restraints
in the rear (Cabriolet)
If
the head restraints in the rear compartment
are in the upper position, the soft top cannot
be closed fully. If the head restraint
electronics are malfunctioning and the
adjustment procedure of the soft top is
interrupted leaving the soft top compartment
cover open, you therefore have to lower the
head restraints in the rear compartment
manually.
Lower the head restraints in the rear
compartment manually if:
R the head restraint electronics are
malfunctioning
R the opening or closing procedure of the soft
top is interrupted leaving the soft top
compartment cover open. Cover ; can only be released when the
opening or closing procedure of the soft top Seats
109
Seats, steering wheel and mirrors Z