sensor MERCEDES-BENZ A-CLASS HATCHBACK 2008 Owners Manual

8
Indicator lamps
see Warning and indicator lamps
Instrument cluster............................... 97
Overview. .......................................... 26
Selecting the language (on-board
computer). ...................................... 108
Instrument lighting.............................. 97
Integrated child seat............................ 50
Interior lighting Automatic control system .................82
Delayed switch-off (on-board
computer). ...................................... 110
Emergency lighting. ..........................83
Manual control.................................. 82
Reading lamp .................................... 82
Interior motion sensor......................... 58
ISOFIX child seat securing system..... 48J
Jack...................................................... 200 Operation........................................ 259
Jump-starting ...................................... 266
Jump leads ...................................... 266K
Key......................................................... 60 Changing the battery ......................244
Checking the battery ......................244
Display message ............................. 220Loss.
............................................... 239
Malfunction..................................... 239
Modifying the programming. .............60
Key positions
Key. .................................................. 62
Kickdown.............................................. 96 L
Lamps see Warning and indicator lamps
Lashing eyelets.................................. 146
Licence plate lighting Display message ............................. 218
Light bulbs
see Bulbs
Lighting
see Lights
Lights
Automatic headlamp mode. ..............78
Constant headlamp mode. ................78
Cornering light function ....................81
Dipped-beam headlamps ..................78
Display messages ........................... 216
Foglamps. ......................................... 79
Hazard warning lamps. .....................80
Headlamp flasher.............................. 80
Headlamp range. .............................. 80
Light switch. ..................................... 77
Main-beam headlamps..................... .80
Rear fog lamp ................................... 79Switching off (display message)...... 218
Turn signals.
..................................... 79
LIM indicator lamp
Cruise control. ................................ 116
Variable Speedtronic. .....................118
Load compartment load, maximum
..................................................... 288, 289
Loading guidelines............................. 145
Locking Automatic. ........................................ 61
Emergency locking .........................242
From the inside (central locking
button) .............................................. 61
Luggage compartment enlarge-
ment.................................................... 150
Luggage compartment floor Adjusting the height .......................155
stowage well, unde r........................ 154
Luggage cover.................................... 159
Luggage net........................................ 145
Lumbar support.................................... 68 M
Main-beam headlamps Display message ............................. 218
Main fuse box..................................... 271
Maintenance Battery ............................................ 263Index
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10 P
Padded table Integrated child seat. ........................51
Paint code number............................. 276
Park Assist Display messages ........................... 210
Parking .................................................. 90
Parking aid Active parking assist. ......................123
Display message ............................. 210
Parktronic. ...................................... 120
Parking brake....................................... 90
Display message ............................. 214
Parking lamps
Display message ............................. 218
Parking lock
Releasing manually (AUTO-
TRONIC)......................................... .243
Parktronic........................................... 120
Activating/deactivating ..................122
Malfunction..................................... 236
Range of the sensors. .....................121
Trailer towing. ................................. 123
Warning displa y.............................. 121
PASSENGER AIRBAG OFF warning
lamp.............................................. 45, 223
Performance....................................... 280
Permanent Speedtronic .....................120Petrol
Minimum grade............................... 169
Plastic trim
Cleaning. ........................................ 195
Power supply (trailer)........................ 190
Power window switch see Side windows
Program selector button
Automatic transmission ....................96
Pulling away.......................................... 89 R
Radio Changing a station (on-board
computer). ...................................... 103
Setting for station selection (on-
board computer). ............................ 111
see separate operating instructions
Range (on-board computer).............. 113
Rear bench seat Folding forward.............................. .150
Rear-compartment seat belt sta-
tus indicator......................................... 76
Rear foglamp Display message ............................. 218
Rear-view mirror
Adjusting .......................................... 70
Anti-dazzle (manual). ........................70
Anti-dazzle mode (automatic). ..........70Rear window
Cleaning. ........................................ 194
Rear window heating .........................140
Malfunction indicator lamp. ............223
Rear window wiper.............................. 83
Replacing the wiper blade.............. .251
Refuelling............................................ 168
Replacing the wiper blades ...............251
Reserve Warning lamp.................................. 229
Reserve fuel........................................ 292
Display message ............................. 220
Fuel tank......................................... 292
Warning lamp. .......................... 26, 229
Reset button......................................... 97
Restraint system see SRS
see SRS (Supplemental Restraint
System)
Restraint systems
For children. ..................................... 43
Rev counter........................................... 98
Reverse gear
Engaging (automatic transmission) ...94
Engaging (manual transmission)
................................................... 92, 93
Reversing lamp
Display message ............................. 219
Roof load, maximum.................. 288, 289
Roof rack............................................. 144Index
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Centre console
31Centre console
Upper section Function Page
1
Switches the hazard warn-
ing lamps on/off
80
2
5
PASSENGER AIRBAG
OFF warning lamp* 45
3
Controls COMAND APS*
and the audio system* –
see the respective operat-
ing instructions
4
Controls Heatmatic, the air-
conditioning system* or
Thermotronic*
129
Switches the rear window
heating on/off
140
5
Activates/deactivates the
seat heating* for the right-
hand seat
69
6
Activates/deactivates the
ECO start/stop function*
127
7
Primes/deactivates the
interior motion sensor*/
tow-away protection*
58 Function Page
8
Deactivates/activates
Parktronic*
122
9
Activates/deactivates the
seat heating* for the left-
hand seat
69At a glance
* optional
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Occupant safety
37carry out any modifications on the restraint
systems.
Never tamper with electronic components
and their software.
SRS (Supplemental Restraint System)
The SRS reduces the risk of occupants com-
ing into contact with the vehicle's interior in
the event of an accident. It can also reduce
the forces to which occupants are subjected
during an accident.
The SRS consists of:
R The 1 warning lamp
R belt tensioners
R belt force limiters
R airbags
The 1 1warning lamp The SRS functions are checked regularly
when you turn on the ignition and when the
engine is running. Malfunctions can therefore
be detected in good time.
The
1 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
Risk of injury
If SRS is malfunctioning, individual systems
may be activated unintentionally or not be
deployed in the event of an accident with
heavy braking.
A malfunction has occurred if the 1
warning lamp:
R does not light up when you switch on the
ignition
R does not go out after the engine has been
running for a few seconds
R lights up again once the engine is running
In this case, have SRS checked immedi-
ately at a qualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags In the event of a collision, the sensor in the
airbag control unit evaluates important phys-
ical data such as duration, direction and force
of the vehicle deceleration or acceleration.
Based on the evaluation of this data and
depending on the vehicle's rate of longitudi-
nal deceleration in a collision, in the first
stage the airbag control unit pre-emptively
triggers the belt tensioners.The front airbags are only deployed if there is
an even higher rate of vehicle deceleration in
a longitudinal direction.
Your vehicle has adaptive, dual stage front
airbags. When the first activation threshold is
reached, the front airbag is filled with enough
propellant gas to reduce the risk of injuries.
The front airbag is only fully inflated if a sec-
ond threshold is reached within a few milli-
seconds, due to the control unit having detec-
ted further deceleration.
Criteria for triggering belt tensioners and
airbags
In the first stage of a collision, the airbag con-
trol unit evaluates the duration and direction
of vehicle acceleration or deceleration in
order to determine whether it is necessary to
trigger the belt tensioner and/or airbag.
The belt tensioner and airbag triggering
thresholds are variable and are adapted to the
rate of deceleration of the vehicle. This proc-
ess is pre-emptive in nature as the airbag
must be deployed during – and not at the end
of – the collision.
i
Airbags are not deployed in all types of
accidents. They are controlled by complex
sensor technology and evaluation logic.
This process is pre-emptive in nature as Safety
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Occupant safety
45
Automatic child seat recognition on the
front-passenger seat*
If your vehicle does not have automatic child
seat recognition 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. It is visible when
you open the front-passenger door. 1
5 PASSENGER AIRBAG OFF warning
lamp
The front-passenger seat sensor system for
child restraint systems detects whether a
special Mercedes-Benz child seat with auto-
matic child seat recognition has been fitted.
In such cases, 5PASSENGER AIRBAG
OFF indicator lamp 1lights up. The front-
passenger airbag is deactivated. G
Risk of injury
If the 5 PASSENGER AIRBAG OFF warn-
ing lamp does not light up when the child
restraint system is fitted, the front-
passenger front airbag has not been disa-
bled. If the front-passenger front airbag is
deployed, 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 sys-
tem 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 its rear-
most position.
R have the automatic child seat recognition
checked at a qualified specialist work-
shop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions correctly, never place objects (such
as a cushion) under the child restraint sys-
tem. The entire base of the child restraint system must always rest on the seat cush-
ion. An incorrectly fitted child restraint sys-
tem cannot perform its intended protective
function in the event of an accident, and
could lead to injuries.
i The windowbag*, th e head/thorax airbag
and the belt tensioner for the front-
passenger seat are still active even if the
front-passenger seat front airbag has been
disabled by the automatic child seat rec-
ognition. G
Risk of injury
Do not place items of electronic equipment
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 recognition sensor system. This could
lead to a system malfunction. This may
cause the 5PASSENGER AIRBAG OFF
warning lamp to light up without there
being a child seat with automatic child seat
recognition fitted. This means that the Safety
* optional
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Anti-theft syste
ms58 Tow-away protection* and interior
motion sensor*
When tow-away protection and the interior
motion sensor have been primed, a visual and
audible alarm is triggered, if:
R motion is detected in the vehicle interior,
e.g. if the side windows of the vehicle are
smashed.
R the inclination of your vehicle changes, e.g.
if one end of your vehicle is raised.
Priming tow-away protection and inte-
rior motion sensor X
Make sure that:
R the side windows are closed
R the panorama louvred sliding sunroof* is
closed.
R there are no objects, e.g. mascots, hanging
on the rear-view mirror or on the grab han-
dles on the roof trim.
This will prevent false alarms.
X Lock the vehicle using the key.
Tow-away protection and the interior
motion sensor are primed after approxi-
mately 30 seconds. Deactivating tow-away protection and
interior motion sensor To prevent a false alarm, deactivate the tow-
away protection and the interior motion sen-
sor if your vehicle:
R
is being transported or towed
R is being loaded, e.g. onto a ferry or car
transporter
R is parked on a movable surface, e.g. split-
level garages
R is locked while persons or animals remain
inside
R is locked while the side windows remain
open
R is locked and the panorama louvred sliding
sunroof* remains open 1
To deactivate tow-away protection/inte-
rior motion sensor
2 Indicator lamp
X Remove the key from the ignition lock.
X Press button 1.
Indicator lamp 2lights up briefly.
X Lock the vehicle using the key.
Tow-away protection and the interior
motion sensor remain deactivated until the
vehicle is unlocked and locked again. Safety
* optional
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Mirrors
71
and incident light from headlamps strikes the
sensor in the rear-view mirror.
The mirrors do not go into anti-dazzle mode if
reverse gear is engaged and the interior light-
ing is switched on. G
Risk of accident
If the incident light from headlamps cannot
strike the sensor in the rear-view mirror, for
instance by objects in the vehicle, the mir-
rors' automatic anti-dazzle function will not
operate.
Incident light could then dazzle you. This
may prevent you from observing the traffic
conditions, thereby causing an accident. In
this case, adjust the rear-view mirror man-
ually. Exterior mirrors
G
Risk of accident
The exterior mirrors reduce the size of the
image. Objects are actually closer than
they appear. You could misjudge the dis-
tance from vehicles driving behind and
cause an accident, e.g. when changing
lane. For this reason, make sure of the
actual distance from the vehicle driving
behind by glancing over your shoulder.
The convex exterior mirrors provide a larger
field of vision.
At low outside temperatures, the exterior mir-
rors are heated automatically. Adjusting the exterior mirrors 1
Adjustment button
2 Right-hand exterior mirror
3 Left-hand exterior mirror
X Make sure that the key is in position 1or
2 in the ignition lock.
X Press button 2for the right-hand exterior
mirror or button 3for the left-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 1as long
as the indicator lamp is lit.
X Press adjustment button 1up, down, to
the right or to the left until the exterior mir- Controls
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Windscreen wipers
83
cle, open a door or remove the key from the
ignition lock.
The interior lighting switches off after a delay.
You can set the delayed switch-off using the
on-board computer (Y page 110). If the door
is left open, the interior lighting goes out after
approximately five minutes.
Emergency accident lighting If the interior lighting is set to automatic, the
interior lighting is activated automatically if
the vehicle is involved in an accident.
X To deactivate: press the hazard warning
lamp button (Y page 80).
or
X Lock and then unlock the vehicle using the
key. Windscreen wipers
Switching the windscreen wipers on/
off
Combination switch
1 To switch on the windscreen wipers
2 Single wipe/to wipe the windscreen using
washer fluid
Settings: 0
Windscreen wipers off
I
Intermittent wipe
II
Continuous wipe, slow
III
Continuous wipe, fast
!
Vehicles with a rain sensor*: If the windscreen becomes dirty in dry
weather conditions, the windscreen wipers
may be activated inadvertently. This could
then damage the windscreen wiper blades
or scratch the windscreen.
For this reason, you should always switch
off the windscreen wipers in dry weather.
X Turn the key to position 1or 2in the ignition
lock.
X Turn the combination switch to the corre-
sponding position. Rear window wiper
Combination switch
1
Switch
% To wipe with washer fluid Controls
* optional
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Driving sys
tems 120
Permanent Speedtronic* You can use the on-board computer to limit
the speed permanently to a value between
160 km/h (e.g. for driving with winter tyres)
and the maximum speed.
Just before the stored speed is reached, it
appears in the multi-function display.
You cannot exceed the stored limit speed,
even if you depress the accelerator pedal
beyond the pressure point (kickdown).
Setting permanent Speedtronic
X Press èor· to select the Set-
tings menu (Y page 106).
X Press the jbutton to call up the selec-
tion of submenus.
X Press the æorç button to select the
Vehicle submenu.
X Press jto select Speed limit
(tyres). X
Press the æorç button to select the
desired setting.
The following settings can be selected:
R Off
Permanent Speedtronic is deactivated.
R A limit speed between 230 km/hand
160 km/h in increments of 10 km/h
X To select a different display, press the
j, èorÿ button. Parktronic*
G
Risk of accident
Parktronic is only an aid and may not detect
all obstacles. It is not a substitute for atten-
tive driving.
You are always responsible for safety and
must continue to pay attention to your
immediate surroundings when parking and
manoeuvring. You could otherwise endan-
ger yourself and others. G
Risk of injury
Make sure that no persons or animals are
in the manoeuvring range. Otherwise, they
could be injured.
Parktronic is an electronic parking aid using
ultrasound. It indicates visually and audibly
the distance between your vehicle and an
object.
Parktronic is automatically activated when
you switch on the ignition and release the
handbrake.
Parktronic is deactivated at speeds above
18 km/h. It is reactivated at lower speeds.
Parktronic monitors the area around your
vehicle using six sensors in the front bumper
and four sensors in the rear bumper. Controls
* optional
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Driving sys
tems 1211
Example: sensors in the front bumper,
left-hand side
Range of the sensors The sensors must be free of dirt, ice and
slush, otherwise they may not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
(Y
page 196). Side view Top view
Front sensors
Centre Approximately 100 cm
Corners Approximately 80 cm
Rear sensors
Centre Approximately 120 cm
Corners Approximately 80 cm
!
When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer towbars. Parktronic
does not detect such objects when they are
in the immediate vicinity of the vehicle. You
could damage the vehicle or the objects. Ultrasonic sources such as an automatic
car wash, a lorry's compressed-air brakes
or a pneumatic drill could cause Parktronic
to malfunction.
Minimum distance Centre Approximately 20 cm
Corners Approximately 20 cm
If there is an obstacle within this range, all
warning displays light up and a tone sounds.
If the distance falls below the minimum clear-
ance, it may no longer be shown.
Warning displays
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 centre air vents.
The warning display for the rear area is loca-
ted on the roof lining in the rear compart-
ment. Controls
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