MERCEDES-BENZ CLA COUPE 2013 Repair Manual

Seat positions
Weight catego-
ries Front-passenger seat
Rear seat
1 Front-
passenger
front airbag is
not disabled Front-
passenger
front airbag is
disabled Left, right Centre
Category II: 15
to 25 kg UF
3
, L 3 U
3
, L 3 U, L X
Category III:
22 to 36 kg
UF
3, 5
, L3, 5 UF
3, 5
, L3, 5 U, L
5 X
Example: approval label on the child restraint system
"Universal" category child restraint systems can be recognised by their orange approval label and the text "Universal".
"Universal" category child restraint systems can be used on the seats indicated with U, UF or
IUF according to the tables "Suitability of the seats for attaching belted child restraint systems"
or "Suitability of the seats for attaching an ISOFIX child restraint system".
Semi-universal child restraint systems are indicated by the text "Semi-universal" on the
approval label. These can be used if the vehicle and the seat are listed in the child restraint
system manufacturer's vehicle model list. For more information, contact the child restraint
system manufacturer or visit their website.
Suitability of the seats for attaching ISOFIX child restraint systems
1 If you use a baby car seat from category 0 or 0+ or a rearward-facing child restraint system from category I
on a rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch the
rearward-facing child restraint.
3 Move the front-passenger seat as far back as possible. If you secure a child in a forward-facing child restraint
system on the front-passenger seat, ensure that the shoulder belt strap from the belt outlet on the vehicle is routed towards the front to the shoulder belt guide on the child restraint system. Set the belt height adjust-
ment so that the belt strap is routed towards the front along the bottom. Move the front-passenger seat to the
highest position and move the backrest to an almost vertical position. When doing so, ensure that the com- plete surface of the child restraint system rests against the backrest of the front-passenger seat and that thechild restraint system does not touch the roof. To do so, you may have to adjust the backrest down a little. For seats with electrical adjustment, the seat cushion angle must be set to the highest and most upright position.
5 For certain child restraint systems in this weight category, this can mean that the area of use is restricted as
the maximum size setting of the child restraint system is not possible due to possible contact with the roof. 58
Children in the vehicleSafety

Key to the letters used in the table:
XI SOFIX position that is not suitable for ISOFIX child restraint systems in this weight cat-
egory and/or size category.
IUF Suitable for forward-facing ISOFIX child restraint systems that belong to the "Universal" category, which are approved for use in this weight category.
IL Suitable for ISOFIX child restraint systems as recommended; see the following table of "Recommended child restraint systems" (Y page 59).
The manufacturer will also recommend a suitable ISOFIX child restraint system. For this,
your vehicle and the seat must be listed in the child restraint system manufacturer's
model list. For more information, contact the child restraint system manufacturer or visit
their website. Weight categories Size category Equipment Rear seat, left and
right
1 Carry-cot
F ISO/L1 X
G ISO/L2 X
0: up to 10 kg
up to approximately
6 months
E ISO/R1 IL
0+: up to 13 kg
up to approximately
15 months
E ISO/R1 IL
D ISO/R2 IL
C ISO/R3
IL
6, 7 I: 9 to 18 kg
between approx-
imately 9 months and
4 years D ISO/R2 IL
C ISO/R3
IL
6, 7 B ISO/F2 IUF
B1 ISO/F2X IUF
A ISO/F3 IUF
Recommended child restraint systems
When installing a child restraint system without a transponder for automatic child seat rec-
ognition on the front-passenger seat:
X Move the front-passenger seat as far back as possible.
1 If you use a baby car seat from category 0 or 0+ or a rearward-facing child restraint system from category I
on a rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch the
rearward-facing child restraint.
6 Vehicles with the Style or Urban package or 4-way or 6-way front seats: set the front seat to the highest
position.
7 Vehicles with 2-way front seats: set the front seat to the foremost position. Children in the vehicle
59Safety Z

If you secure a child in a forward-facing child restraint system on the front-passenger seat,
ensure that the shoulder belt strap from the belt outlet on the vehicle is routed towards the front to the shoulder belt guide on the child restraint system. Set the belt height adjustment
so that the belt strap is routed towards the front along the bottom. Weight catego-
ries Manufac-
turer Type Approval
number
(E1 ...) Order num-
ber
(A 000 ...)
Colour
code: 9H95 Automatic
child seat
recognition
Category 0: up
to 10 kg
up to approx-
imately
6 months Britax
Römer BABY
SAFE plus 03 301146
04 301146 970 10 00 Yes
BABY
SAFE plus
II 04 301146 970 20 00
Category 0+:
up to 13 kg
up to approx-
imately
15 months Britax
Römer BABY
SAFE plus 03 301146
04 301146 970 10 00 Yes
BABY
SAFE plus
II 04 301146 970 20 00
Category I:
9to
18 kg
between
approximately
9 months and
4 years Britax
Römer DUO plus 03 301133
04 301133 970 11 00 Yes
970 16 00 No
04 301133 970 21 00 Yes
Group II/III: 15
to 36 kg
between
approximately
4and 12 years Britax
Römer KIDFIX 04 301198 970 18 00 Yes
970 19 00 No
970 22 00 Yes
Suggested "Universal"/"Semi-Universal" category ISOFIX child restraint systems:
Weight
catego-
ries Size cate-
gory Manufac-
turer Type Approval
number
(E1 ...) Order
number
Colour
code:
9H95 Auto-
matic
child seat
recogni-
tion Carry-cot
F – – – – –
G – – – – –60
Children in the vehicleSafety

Weight
catego-
ries Size cate-
gory Manufac-
turer Type Approval
number
(E1 ...) Order
number
Colour
code:
9H95 Auto-
matic
child seat
recogni-
tion Category
0:
up to
10 kg
E – – – – –
Category
0+:
up to
13 kg
E Britax
Römer BABY SAFE
plus 03 301146
04 301146 B6 6 86
8224 No
D – – – – –
C – – – – –
Category
I:
9 to 18 kg
D – – – – –
C – – – – –
B – – – – –
B1 Britax
Römer DUO plus 03 301133
04 301133 A 000 970
11 00 Yes
A 000 970
16 00 No
04 301133 A 000 970
21 00 Yes
A – – – – –Children in the vehicle
61Safety Z

Problems with automatic child seat recognition
Problem
Possible causes/consequences and
M
MSolutions The PASSENGER AIR-
BAG OFF indicator
lamp on the centre con-
sole is lit. A special Mercedes-Benz child restraint system with a trans-
ponder for automatic child seat recognition has been fitted to the
front-passenger seat. The front-passenger front airbag has there- fore been disabled as desired. The PASSENGER AIR-
BAG OFF indicator
lamp on the centre con-
sole is lit.
or
The 6 SRS warning
lamp lights up and/or
the PASSENGER AIR-
BAG OFF indicator
lamp does not light up
briefly when you switch the ignition on. G
WARNING
There is no child restraint system fitted to the front-passenger
seat. Automatic child seat recognition is malfunctioning.
There is a risk of injury. 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 PASSENGER AIRBAG OFF indicator lamp is still lit:
X Visit a qualified specialist workshop. Child-proof locks
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R shift the manual transmission into neutral.
R start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave children or animals unattended in the vehicle.
Always keep the key out of reach of children. G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle. G
WARNING
If children are travelling in the vehicle, they
could:
R open doors, thus endangering other people
or road users
R exit the vehicle and be caught by oncoming
traffic
R operate vehicle equipment and become
trapped, for example
There is a risk of an accident and injury.
Always activate the child-proof locks and
override feature if children are travelling in the 62
Children in the vehicleSafety

vehicle. When leaving the vehicle, always take
the key with you and lock the vehicle. Never
leave children unattended in the vehicle.
You can activate the following child-proof
locks:
R rear doors (Y page 63)
R rear side windows (Y page 63)
Child-proof locks for the rear doors You secure each door individually with the
child-proof locks on the rear doors. A door
secured with a child-proof lock cannot be
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside.
X To activate: press the child-proof lock
lever up in the direction of arrow :.
X Make sure that the child-proof locks are
working properly.
X To deactivate: press the child-proof lock
lever down in the direction of arrow ;.Override feature for the rear side win-
dows X
To activate/deactivate: press button:.
If indicator lamp ;is lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the driv- er's door. If indicator lamp ;is off, oper-
ation is possible using the switches in the
rear compartment. Driving safety systems
Driving safety systems overview
In this section, you will find information about the following driving safety systems:
R ABS ( Anti-lock BrakingSystem)
(Y page 64)
R BAS ( Brake Assist System) (Y page 64)
R COLLISION PREVENTION ASSIST (distance
warning function and adaptive Brake
Assist) (Y page 65)
R COLLISION PREVENTION ASSIST PLUS
(Y page 65)
R Adaptive brake lamps (Y page 68)
R ESP ®
(Electronic StabilityProgram)
(Y page 68)
R EBD ( electronic brake force distribution)
(Y page 72)
R ADAPTIVE BRAKE (Y page 72)
R STEER CONTROL (Y page 72) Driving safety systems
63Safety Z

Important safety notes
If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of accident nor over-
ride the laws of physics. Driving safety sys-
tems are merely aids designed to assist driv- ing. You are responsible for the distance to
the vehicle in front, for vehicle speed and for braking in good time. Always adapt your driv- ing style to suit the prevailing road, weather
and traffic conditions and maintain a safe dis-
tance from the vehicle in front. Drive care-
fully.
i The driving safety systems described only
work as effectively as possible when there
is adequate contact between the tyres and
the road surface. Pay particular attention to the information regarding tyres, recom-
mended minimum tyre tread depths etc. inthe "Wheels and tyres" section
(Y page 326).
In wintry driving conditions, always use
winter tyres (M+S tyres) and, if necessary,
snow chains. Only in this way will the driv-
ing safety systems described in this section work as effectively as possible. ABS (Anti-lock Braking System)
General notes ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi- cle when braking.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched on. It goes out when the engine is running.
Important safety notes i
Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 64). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid- ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp (Y page 265) and
display messages which may be shown in the
instrument cluster (Y page 235).
ABS works from a speed of about
8 km/hupwards, regardless of road-surface
conditions. ABS works on slippery surfaces,
even when you only brake gently.
Brakes X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit- uation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions, and func-
tions as a reminder to take extra care while
driving. BAS (Brake Assist)
General notes BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance. 64
Driving safety systemsSafety

Important safety notes
i
Observe the "Important safety notes" sec-
tion (Y page 64). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal depressed firmly until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. COLLISION PREVENTION ASSIST
General notes COLLISION PREVENTION ASSIST consists of
the adaptive Brake Assist and the distance
warning signal, which are described in the
following.
Distance warning function Important safety notes
i Observe the "Important safety notes" sec-
tion (Y page 64). G
WARNING
The distance warning function does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G
WARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation; do not rely on the distance warning
function alone.
Function X To activate/deactivate: activate or deac-
tivate the distance warning function in the
on-board computer (Y page 224).
If the distance warning function is activated,
the Ä symbol appears in the assistance
graphics display.
The distance warning function can help you to
minimise the risk of a collision with a vehicle
ahead or reduce the effects of such a colli-
sion. If the distance warning function detects that there is a risk of a collision, you will be
warned visually and acoustically. Without
your intervention, the distance warning func-
tion cannot prevent a collision.
The distance warning function issues a warn- ing at speeds:
R of around 30 km/h or more, if, over several
seconds, the distance maintained to the
vehicle travelling in front is insufficient. The
· distance warning lamp then lights up
in the instrument cluster.
R of around 7 km/h or higher, if you very
quickly approach a vehicle in front. An
intermittent warning tone will then sound,
and the ·distance warning lamp will
light up in the instrument cluster. Driving safety systems
65Safety Z

X
Brake immediately in order to increase the
distance from the vehicle in front.
or
X Take evasive action provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause the system to display a
warning.
With the help of the radar sensor system, the distance warning function can detect obsta-
cles that are in the path of your vehicle for an
extended period of time.
Up to a speed of about 70 km/h, the distance warning function can also react to stationaryobstacles, such as stopped or parked vehi-
cles.
If you approach an obstacle and the distance
warning function detects a risk of a collision,
the system will alert you both visually and
acoustically.
In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, for example, in
multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle
R a vehicle travelling in front on a different
line
R new vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system
Please observe the information in the sec-
tion on running-in the vehicle
(Y page 146).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Adaptive Brake Assist i
Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 64). G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist may:
R intervene unnecessarily
R not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation. G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R to stationary obstacles
R when cornering
As a result, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
Adaptive Brake Assist aids you in braking dur-
ing hazardous situations at speeds above
7 km/h and uses the radar sensor system to
evaluate the traffic situation.
With the help of a sensor system, adaptive
Brake Assist can detect obstacles that are in the path of your vehicle for an extended
period of time.
If you approach an obstacle and adaptive
Brake Assist has detected a risk of collision,
adaptive Brake Assist calculates the braking 66
Driving safety systemsSafety

force necessary to avoid a collision. If you
apply the brakes forcefully, adaptive Brake
Assist will automatically increase the braking force to a level suitable for the traffic condi-
tions.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if: R you release the brake pedal
R there is no longer any danger of a collision
R no obstacle is detected in front of your
vehicle
Adaptive Brake Assist is then deactivated.
Vehicles with PRE-SAFE ®
:if adaptive Brake
Assist requires particularly high brake pres-
sure, preventive passenger protection meas-
ures (PRE-SAFE ®
) are deployed simultane-
ously.
Up to vehicle speeds of around 250 km/h,
adaptive Brake Assist is capable of reacting to
moving objects that have already been rec-
ognised as such at least once over the period
of observation. Adaptive Brake Assist does
not react to stationary obstacles.
If adaptive Brake Assist is not available due to a malfunction in the radar sensor system, thebrake system remains available with full
brake boosting effect and BAS.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, for example, in
multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle
R a vehicle travelling in front on a different
line
R new vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system Please observe the information in the sec-
tion on running-in the vehicle
(Y
page 146).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
COLLISION PREVENTION ASSIST PLUS General notes
COLLISION PREVENTION ASSIST PLUS is
only available on vehicles with DISTRONIC.
COLLISION PREVENTION ASSIST PLUS
extends the functionality of COLLISION PRE-
VENTION ASSIST with an automatic braking
function. COLLISION PREVENTION ASSIST
PLUS can help you to minimise the risk of a
front-end collision with a vehicle ahead or
reduce the effects of such a collision. If COL-
LISION PREVENTION ASSIST PLUS detects
that there is a risk of a collision, you will be
warned visually and acoustically. In critical
situations COLLISION PREVENTION ASSIST
PLUS also initiates automatic braking.
Function
X To activate/deactivate: activate or deac-
tivate COLLISION PREVENTION ASSIST
PLUS in the on-board computer
(Y page 224).
If COLLISION PREVENTION ASSIST PLUS is
activated, the Äsymbol appears in the
assistance graphics display.
If the driver's seat belt is fastened, COLLI-
SION PREVENTION ASSIST PLUS can brake
automatically within a speed range of
between 7 km/h and 200 km/h.
COLLISION PREVENTION ASSIST PLUS can
also react to stationary obstacles with auto-
matic braking within a speed range of
between 7 km/h and 30 km/h.
Vehicles with PRE-SAFE ®
:if the automatic
braking function of COLLISION PREVENTION Driving safety systems
67Safety Z