2011 MERCEDES-BENZ C-CLASS COUPE ignition

H
Handbrake see Parking brake
Hazard warning lamps ......................111
Headlamp Cleaning system (function) ............110
Headlamps
Misting up ...................................... 113
Topping up the cleaning system ....304
see Automatic headlamp mode
Head restraints
Adjusting ......................................... 98
Adjusting (electrically). ....................99
Adjusting (manually). .......................98
see NECK-PR Ohead restraints
Heating
see Climate control
High-pressure cleaners ....................307
Hill start assist .................................. 140
HOLD function Display message (12-button mul-
tifunctio nsteering wheel) ..............257
Display message (4-button multi-
function steering wheel) ................256
Function/notes ............................. 177 I
Ignition lock see Key positions
Immobiliser .......................................... 73
Indicator and warning lamps Coolant .......................................... 280
DISTRONI CPLUS ........................... 282
Engine diagnostics .........................280
Fuel tank ........................................ 280
Overview (12-button multifunc-
tion steering wheel) .........................37
Overview (4-button multifunction
steering wheel) ................................ 34
SPORT handling mode ...................278
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals Instrument cluster (12-button mul-
tifunction steering wheel)
Indicator and warning lamps ............37
Overview .......................................... 35
Settings ......................................... 223
Instrument cluster (4-button mul-
tifunction steering wheel) Indicator and warning lamps ............34
Overview .......................................... 32
Instrument cluster lighting
Multifunctio nsteering wheel with
12 buttons ....................................... 35
Multifunctio nsteering wheel with
4b utton s......................................... 32
Instrument lighting
see Instrument cluster lighting
Intelligen tLight System
Activating/deactivatin g(12-but-
ton multifunctio nsteering wheel) ..224
Display message (12-button mul-
tifunctio nsteering wheel) ..............250
Setting the dipped-bea mhead-
lamps for driving on the right/left .224
Interior lighting
Automatic control system ..............114
Delayed switch-off (12-button
multifunctio nsteering wheel) ........225
Emergency lighting ........................114
Manual control ............................... 114
Overview ........................................ 114
Reading lamp ................................. 114
see Interior lighting
Interior motion sensor ........................74
ISOFIX child seat securing system ....58 J
Jack Storage location ............................ 315
Using ............................................. 322
Jump starting (engine) ......................329 K
Key Changing the battery .......................81
Checking the battery .......................81
Convenience closing feature ............89 Index
13

Convenience opening feature
..........88
Display message (4-button multi-
function steering wheel) ................270
Door central locking/unlocking .......78
Emergency key element ................... 80
Loss ................................................. 82
Modifying the programming .............79
Positions (ignition lock) .................137
Problem (malfunction) .....................82
Starting the engine ........................139
KEYLESS-GO
Convenience closing ........................89
Display message (12-button mul-
tifunctio ndisplay) .......................... 271
Display message (4-button multi-
function display) ............................ 270
Locking ............................................ 79
Start/Stop button .......................... 137
Starting the engine ........................139
Unlocking ......................................... 79
Keyp ositions
Key ................................................ 137
KEYLESS GO .................................. 137
Keys
Display message (12-button mul-
tifunctio nsteering wheel) ..............271
Kickdown
Driving tips .................................... 147
Manual drive program ....................150
Kneebag ............................................... 48L
Lamps see Warning and indicator lamps
Lane-change assistant
see Blind Spot Assist
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating .................222
Display message (12-button mul-
tifunctio nsteering wheel) ..............258
Function/informatio n.................... 192
Lane package ..................................... 190
Lap time (RACETIMER) ......................229
Lashing eyelets ................................. 287Lighting
see Lights
Lights
Activating/deactivating the exte-
rior lighting delayed switch-off
(12-button multifunction steering
wheel) ............................................ 225
Activating/deactivating the Intel-
ligent Ligh tSystem ........................ 224
Activating/deactivating the inte-
rior lighting delayed switch-off
(12-button multifunction steering
wheel) ............................................ 225
Active light function .......................111
Automatic headlamp mode ............109
Cornering light function .................111
Dipped-bea mheadlamps ............... 109
Driving abroad ............................... 108
Foglamps ....................................... 109
Foglamps (extended range) ...........112
Hazard warning lamps ...................111
Headlamp flasher ........................... 111
Headlamp range ............................ 110
Ligh tswitc h................................... 108
Main-beam headlamps ................... 110
Motorway mode ............................. 112
Parking lamps ................................ 108
Rea rfoglamp ................................. 109
Switching Adaptive Highbeam
Assist on/off ................................. 225
Switching the daytime driving
lights on/off (12-button multi-
function steering wheel) ................224
Switching the daytime driving
lights on/off (4-button multifunc-
tion steering wheel) .......................210
Switching the daytime driving
lights on/off (switch) .....................109
Switching the surround lighting
on/off (12-button multifunction
steering wheel) .............................. 225
Turn signals ................................... 110
see Changing bulbs
see Interior lighting 14
Index

G
WARNING
Modifications to or work performed incor-
rectly on the following parts can result in the
restraint systems not functioning as intended:
R the restraint system, consisting of seat
belts and their anchorage points, beltt en-
sioners, belt force limiters and airbags
R the wiring
R networked electronic systems
Airbags and belt tensioners could fail to
deploy or be triggered in an acciden tdespite
the deceleration force being sufficien tto trig-
ger the systems, or could be triggered unin-
tentionally. For this reason, never make any
modifications to the restraint systems.
Therefore, you must not tamper with elec-
tronic components or their software. SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
the 6 SRS warning lamp
R airbags
R airbag control unit (with crash sensors)
R belt tensioners
R belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started. G
WARNING
If SRS is malfunctioning, individual systems
may be activated unintentionally or may not
be triggered in the event of an accident with
a high rate of vehicle deceleration.
A malfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignition is switched on.
R the engine is running and the 6SRS
warning lamp does not go out after a few
seconds.
R the engine is running and the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at a qualified specialist workshop. Mercedes-
Benz recommends that you use a Mercedes-
Benz Service Centre for this purpose.
In particular, work relevant to safety or on
safety-related systems must be carried out at
a qualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags During the first stage of a collision, the airbag
control unit evaluates important physical
data relating to vehicle deceleration or accel-
eration, such as:
R
duration
R direction
R magnitude
Based on the evaluation of this data, the air-
bag control unit pre-emptively triggers the
belt tensioners in the first stage.
i The front belt tensioners can only be trig-
gered if the seat belt tongues on the front
seats are correctly engaged in the seat belt
buckles.
If there is an even higher rate of vehicle decel-
eration or acceleration in a longitudinal direc-
tion, the front airbags are also deployed.
Your vehicle has adaptive, two-stage front air-
bags. The airbag control unit evaluates vehi-
cle deceleration or acceleration in the event Occupant safety
45Safety Z

Fastening seat belts
X
Adjust the seat and move the backrest to
an almost vertical position (Y page 96).
X Pull the seat belt smoothly through belt
sash guide :.
X Without twisting it, 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: if necessary, the
driver's and front-passenger seat belts
automatically adjust to th eupper body
(Y page 53).
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 a child
seat lock (Y page 56). If you pull out the seat
belt fully and then allow the inertia reel to
retract it, the child-seat lock is activated. To
deactivate the child seat lock, unfasten the
seat belt and guide the belt tongue to the belt
sash guide.
For more information about releasing the seat
belt with release button ?, see "Releasing
seat belts" (Y page 53). 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
2in the ignition lock.
R the key is in position 2in the ignition lock
and you then engage the belt tongue in the
buckle.
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the occupant and the seat belt. Do
not hold on to the seat belt tightly while it is
adjusting. On vehicles with a luxury multi-
function steering wheel (12 buttons), you can
switch the seat-belt adjustment on and off
using the on-board computer (Y page 228).
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 ®
(preventative occupant
protection)" section (Y page 50).
Releasing seat belts X
Press release button ?(Ypage 53) and
guide belt tongue ;back towards belt
sash guide :.
i If you have guided the seat belt back, it is
turned 180 °. This is necessary in order to
guarantee that the seat belt is not twisted
and that it is routed correctly when the belt
is fastened.
! 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 a Mercedes-Benz Service Centre. Occupant safety
53Safety Z

Belt warning for driver and front
passenger The
7 seatbelt warning lamp in the instru-
ment cluster is a reminder for all occupants
to fasten their seat belts. It may light up con-
tinuously or flash. In addition, there may be a
warning tone.
The 7 seat belt warning lamp goes out and
the warning tone ceases when the driver and
the fron tpassenger have fastened their seat
belt.
For certain countries only: regardless of
whether the driver or th efront passenger
have fastened their seat belts, the 7seat
beltw arning lamp lights up for six seconds
after the engine is started. It then goes out if
the driver and the fron tpassenger have fas-
tened their seat belts.
i For more information on the 7seat
belt warning lamp, see "Warning and indi-
cator lamps in the instrumen tcluster, seat
belt" (Y page 273).
Rear seat belt status indicator 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 üsymbol in the display
indicates a fastened seat belt. If a seat belt is
not fastened or if a seat is not occupied, the
ý symbol is displayed.
The rear-compartment seat belt status indi-
cator appears in the multifunction display for
around 30 seconds if:
R you drive off and reach a speed of approx-
imately 10 km/h.
R the rear passengers fasten or unfasten
their seat belts while the vehicle is in
motion.
R someone gets in or out of the vehicle and
the vehicle drives off again. You can also cancel the rear seat belt status
indicator immediately (Y
page 232).
i The status indicator for the rear-compart-
ment seat belts is only available for certain
countries.
Belt tensioners, belt force limiters The seat belts are fitted with belt tensioners.
The belt tensioners tighten the seat belts in
an accident, pulling them close against the
body.
Belt tensioners do not correct incorrect seat
positions or incorrectly fastened seat belts.
Belt tensioners do not pull vehicle occupants
back towards the backrest.
If the seat belt is also fitted with a belt force
limiter and this is triggered, the force exerted
by the seat belt on the vehicle occupan
tis
reduced.
The belt force limiters on the front seats are
synchronised with the front airbags. They
take on a part of the deceleration force,
resulting in the force exerted on the occupant
being distributed over a greater area.
The beltt ensioners can only be activated
when:
R the ignition is switched on.
R the restraint systems are operational; see
"SRS warning lamp" (Y page 45).
R the belt tongue is engaged in the buckle on
each of the three-poin tseat belts in the
front.
The belt tensioners on the seats in the rear
compartment are triggered independently of
the lock status of the seat belts.
The belt tensioners are triggered depending
on the type and severity of an accident:
R if, in the event of a head-on or rear-end col-
lision, the vehicle decelerates or acceler-
ates rapidly in a longitudinal direction dur-
ing the initial stages of the impact
R if, in the event of a side impact, on the side
opposite the impact the vehicle deceler- 54
Occupant safetySafety

Child seat on the front-passenger seat
Warning notice on the front-passenger sun visor
Warning symbol for a rearward-facing child
restraint system G
WARNING
If the front-passenger airbag is no tdisabled:
R a child secured in a child restraint system
on the front-passenge rseat could be seri-
ously and even fatally injured by the front-
passenger airbag deploying. This is espe-
cially a risk if the child is in the immediate
vicinity of the front-passenger airbag when
it deploys.
R never secure a child on the front-passenger
seat in a rearward-facing child restraint sys-
tem. Only secure a rearward-facing child
restraint system on a suitable rear seat.
R always move the front-passenger seat to
the rearmost position if you secure a child
in a forward-facing child restraint system
on the front-passenger seat. The front-passenger airbag is not disabled:
R
on vehicles without automatic child seat
recognition on the front-passenger seat
R in vehicles with automatic child seat rec-
ognition in the front-passenger seat, if no
special child restraint system with trans-
ponders for automatic child seat recogni-
tion in the front-passenger seat has been
fitted
R on vehicles with automatic child seat rec-
ognition on the front-passenger seat, if the
PASSENGER AIRBAG OFF indicator lamp
4 is not lit.
To make you aware of this danger, a corre-
sponding warning sticker has been affixed on
the dashboard and on both sides of the sun
visor on the front-passenger side.
Information about recommended child
restraint systems is available at any
Mercedes-Benz Service Centre.
Automatic child seat recognition on the
front-passenger seat If your vehicle does not have automatic child
seat recognition
1
on the front-passenger
seat, this is indicated by a special sticker. The
sticker is affixed to the side of the dashboard
on the front-passenger side. The sticker is
visible when you open the front-passenger
door.
1 Vehicles without automatic child seat recognition on the front-passenger seat: if you turn the key to position
2int he ignition lock, the 4PASSENGER AIRBAG OFF indicator lamp lights up briefly but has no function.
It does not indicate that there is automatic child seat recognition on the front-passenger seat. Children in the vehicle
57Safety Z

The front-passenger seat sensor system for
child restraint systems detects whether a
special Mercedes-Benz child seat with a
transponder for automatic child seat recog-
nition has been fitted. In such cases,
PASSENGER AIRBAG OFF indicator lamp
4: lights up. The front-passenger airbag
is disabled. G
WARNING
If the 4 PASSENGER AIRBAG OFF indica-
tor lamp does not light up when the child
restraint system is fitted, the front-passenger
airbag has not been disabled. If the front-
passenger airbag deploys, the child could be
seriously or even fatally injured.
Proceed as follows:
R do not use a rearward-facing child restraint
system on the front-passenger seat.
R fit a rearward-facing child restraint system
on a suitable rear seat.
or
R only use a forward-facing child restraint
system on the front-passenger seat and
move the front-passenger seat to the rear-
most position.
R have the automatic child seat recognition
checked at a qualified specialist workshop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions/communicates correctly, never place
objects, e.g. a cushion, under the child
restraint system. The entire base of the child
restraint system must always rest on the seat
cushion. An incorrectly fitted child restraint system cannot perform its intended protec-
tive function in the event of an accident, and
could lead to injuries.
i If the front-passenger airbag is disabled
by the automatic child seat recognition, the
following remain enabled on the front-
passenger side:
R the sidebag
R the pelvisbag
R the windowbag
R the belt tensioner G
WARNING
Do not place electronic devices on the front-
passenger seat, e.g.:
R laptops, when switched on
R mobile phones
R cards with transponders, e.g. ski passes or
access cards
Signals from electronic equipment can cause
interference in the automatic child seat rec-
ognition sensor system. This can lead to a
system malfunction. This may cause the
4 PASSENGER AIRBAG OFF indicator
lamp to light up without there being a child
seat with transponders for automatic child
seat recognition fitted. The front-passenger
airbag will not then deploy during an accident.
It is also possible that the 6SRS warning
lamp lights up and/or the 4PASSENGER
AIRBAG OFF indicator lamp does not light up
briefly when you turn the key in the ignition
lock to position 2.
ISOFIX child seat securing system for
the rear seats ISOFIX is a standardised securing system for
specially designed child restraint systems on
the rear seats. Securing rings for two ISOFIX
child restraint systems are fitted on the left
and right of the rear seats.58
Children in the vehicleSafety

Problems with child seat recognition
Problem Possible causes/consequences and
M Solutions
The
4 PASSENGER
AIRBAG OFF indicator
lamp on the centre con-
sole is lit. As
pecial Mercedes-Benz child seat with a transponder for auto-
matic child seat recognition has been fitted to the front-passenger
seat. The front-passenger airbag has therefore been disabled as
desired. G
Risk of injury
There is no child seat fitted to the front-passenger seat. Automatic
child seat recognition is malfunctioning.
It is also possible that the 6SRS warning lamp lights up and/
or the 4PASSENGER AIRBAG OFF indicator lamp does not light
up briefly when you switch the ignition on.
X Remove electronic equipment from the front-passenger seat,
e.g.
R
laptop
R mobile phone
R cards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit:
X Visit a qualified specialist workshop. Suitable positioning of the child restraint systems
Key to the letters used in the table:
XS
eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in the Universal category that are approved for use in
this weigh tcategory.
UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and are approved for use in this weigh tcategory.
LS uitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" (Y page 63). Children in the vehicle
61Safety Z