2008 MERCEDES-BENZ R-CLASS MPV ignition

Cockpit
23Function Page
1 Cruise control lever:
• cruise control 140
• Speedtronic 149
• Distronic* 143
2 Instrument cluster
26
3 Multi-function steering
wheel
30
4 Horn
5 DIRECT SELECT steering
wheel gearshift buttons 117
6 DIRECT SELECT selector
lever 114
7
Parktronic* warning dis-
play
156 Function Page
8 Overhead control panel
33
9 Locks/unlocks the glove
compartment 201
a Glove compartment
201
b Centre console
31
c Ignition lock/KEYLESS GO
button*
76
d Adjusts the steering wheel
manually
88
e Adjusts the steering wheel
electrically*
88
Steering wheel heating* 89
f Opens the bonnet
220 Function Page
g Releases the parking brake
112
h Parking brake
112
j Door control panel
34
k Light switch
97
l Adjusts the headlamp
range
100
m Combination switch:
• main-beam headlamps 99
• turn signals 99
• windscreen wipers 104
• headlamp cleaning sys-
tem
102At a glance
* optional
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Cockpit
25Function Page
1 Overhead control panel
33
2
Parktronic* warning dis-
play
156
3 DIRECT SELECT steering
wheel gearshift buttons 117
4 Horn
5 Multi-function steering
wheel
30
6 Instrument cluster
26
7 DIRECT SELECT selector
lever 114
8 Adjusts the headlamp
range
100
9 Light switch
97 Function Page
a Door control panel
34
b Releases the parking brake
112
c Opens the bonnet
220
d Ignition lock/KEYLESS GO
button*
76
e Adjusts the steering wheel
manually
88
f Parking brake
112
g Adjusts the steering wheel
electrically*
88
Steering wheel heating*
89 Function Page
h Combination switch:
• main-beam headlamps 99
• turn signals 99
• windscreen wipers 104
• headlamp cleaning sys-
tem
102
j Cruise control lever:
• cruise control 140
• Speedtronic 149
• Distronic* 143
k Centre console
31
l Locks/unlocks the glove
compartment
201
m Glove compartment
201At a glance
* optional
251_AKB; 5; 7, en-GB
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Occupant safety
41carry 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 1 warning 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.i
The front belt tensioners can only be trig-
gered if the belt tongue is correctly
engaged in the seat belt buckle.
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
detected 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. Safety
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Occupant safety
42
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
airbag deployment must take place during
the impact and must be adapted to provide
calculated, additional protection for the
vehicle occupants. Not all airbags are
deployed in an accident.
The different airbag systems work inde-
pendently of each other. However, the
deployment of each individual system will
depend on the type of accident determined
by the control system in the first stages of
the collision (head-on collision, side impact
and overturn) and the extent of the acci-
dent (in particular, the vehicle's rate of
deceleration or acceleration).
The rate of vehicle deceleration or accelera-
tion and the direction of the force are basi-
cally determined by:
R the distribution of forces during the colli-
sion
R the collision angle R
the deformation characteristics of the vehi-
cle
R the characteristics of the object with which
the vehicle has collided, e.g. the other vehi-
cle
Factors which can only be seen and measured
after a collision has occurred do not play a
decisive role in the deployment of an airbag,
nor do they provide an indication of it.
The vehicle may be deformed significantly,
e. g. on the bonnet or the wing, without an
airbag being deployed. This is the case if only
parts which are relatively easily deformed are
affected and the necessary deceleration does
not occur. Conversely, airbags may be
deployed even though the vehicle suffers only
minor deformations. This is the case if, for
example, very rigid vehicle parts such as lon-
gitudinal body members are affected and suf-
ficient deceleration occurs as a result.
Belt tensioners, belt force limiters The seat belts of the front seats, the outer
seats in the 2nd row and the seats in the 3rd
row* have belt tensioners. The front seat
belts are also fitted with belt buckle tension-
ers.!
Do not engage the seat belt tongue in the
buckle on the front-passenger seat if the
seat is not occupied. Otherwise the belt
tensioner could be activated in an emer-
gency.
If the seat belt is also equipped with a belt
force limiter, the force exerted by the seat
belt on the seat occupant is reduced.
Belt tensioners tighten the seat belts in an
accident, pulling them close against the body.
i Belt tensioners do not correct incorrect
seat positions or incorrectly fastened seat
belts.
Belt tensioners do not pull occupants back
towards the backrest.
The front belt force limiters are synchronised
with the front airbags, which distribute the
forces exerted by the belt force limiters on
the occupant over a greater area.
The belt tensioners/belt buckle tensioners
are triggered when the ignition is switched
on:
R only if the restraint systems are operational
(the 1 warning lamp lights up after the Safety
* optional
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Occupant safety
43
ignition is switched on and goes out once
the engine is running)(Y
page 41)
R for each three-point seat belt in the front of
the vehicle when the belt tongue is
engaged in the buckle
R in the event of a head-on or rear-end colli-
sion if the vehicle decelerates or acceler-
ates rapidly in a longitudinal direction
during the initial stages of impact
R in certain situations if the vehicle over-
turns, and the system determines that it
can provide additional protection
If the airbags are deployed, you will hear a
bang and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that escapes
does not generally constitute a health hazard.
The 1 warning lamp lights up.
i If the belt buckle tensioners have been
triggered on the front seats, the buckle will
be pulled down and will be almost flush with
the upper edge of the seat. The 1warn-
ing lamp comes on. G
Risk of injury
The belt buckle tensioners on the front
seats only function if the belt buckles can
be pulled down without obstruction. They must not be restricted in any way. For this
reason, do not hold the belt buckles and do
not place any objects under the belt buck-
les. Otherwise, the tensioning of the belt by
the buckle is restricted or will not function
and will not provide any additional protec-
tion.
G
Risk of injury
If the seat belt tensioners have been trig-
gered, they provide no additional protec-
tion in the event of another accident.
Therefore, have belt tensioners which have
been triggered replaced at a qualified spe-
cialist workshop.
Comply with safety regulations when dis-
posing of belt tensioners. Any Mercedes-
Benz Service Centre can provide details of
these regulations.
Airbags Airbag deployment slows down and restricts
the movement of the vehicle occupant.
If the airbags are deployed, you will hear a
bang and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that escapes
does not generally constitute a health hazard.
The 1 warning lamp lights up. The SRS/AIRBAG identification indicates the
location of the airbags. G
Risk of injury
Airbags provide additional protection; they
are not, however, a substitute for seat
belts.
Observe the following notes to reduce the
risk of serious or even fatal injury if an air-
bag is deployed:
R all vehicle occupants — in particular preg-
nant women — must wear their seat belt
correctly at all times and lean back
against the backrest, which should be
positioned as close to the vertical as pos-
sible. The head restraint must support
the back of the head at about eye level.
R always secure children less than 1.50 m
tall or under 12 years of age in suitable
child restraint systems.
R all vehicle occupants must select a seat
position that is as far away from the air-
bag as possible. The driver's seat posi-
tion must allow the vehicle to be driven
safely. The driver's chest should be as far
away from the middle of the driver's front
airbag cover as possible. Safety
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Occupant safety
50 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 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.
The warning lamp 13
is located on the centre
console. 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, the sidebag and the belt
tensioner on the front-passenger side are
still active even when the front-passenger
front airbag is disabled.
13 Vehicles without automatic child seat recognition in the front-passenger seat: the warning lamp lights up briefly when you turn the key to position 2 in the ignition
lock. However, it has no function and does not indicate that there is automatic child seat recognition on the front-passenger seat. Safety
* optional
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Occupant safety
51G
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 front-passenger airbag does not deploy
during an accident. It is also possible that
the
5 PASSENGER AIRBAG OFF warning
lamp will not light up briefly if you turn the
key in the ignition lock to position 2.
Suitable positioning of the child restraint system Weight categories and
ages Child restraint system
on the front-
passenger seat 2nd row of seats:
child restraint sys-
tem on the left-hand
and right-hand seats 2nd row of seats: child
restraint system on
the centre rear seat
3rd row of seats*: child
restraint system
Group 0: up to 10 kg;
up to approx. 9 months Vehicles with automatic
child seat recognition*
on the front-passenger
seat: as recommen-
ded
14 Universal
15 As recommended Universal
Group 0+: up to 13 kg;
up to approx. 18 months 14
Only use child restraint systems with automatic child seat recognition.
15 Position the rear seat backrest vertically. Safety
* optional
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Driving safety sys
tems60 ESP
®
(Electronic Stability Program)
ESP ®
monitors driving stability and traction,
i.e. power transmission between tyres and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilise the
vehicle. The engine output is also modified, if
necessary, to keep the vehicle on the desired
course within physical limits. ESP ®
assists
the driver when pulling away on wet or slip-
pery roads. ESP ®
can also stabilise the vehi-
cle during braking.
When ESP ®
intervenes, the vwarning
lamp flashes in the instrument cluster. G
Risk of accident
If the v warning lamp in the instrument
cluster flashes, proceed as follows:
R do not deactivate ESP ®
under any cir-
cumstances.
R only depress the accelerator pedal as far
as necessary when pulling away.
R adapt your driving style to suit prevailing
road and weather conditions.
The vehicle could otherwise go into a skid. ESP
®
cannot reduce the risk of an accident
if you drive too fast. ESP ®
cannot override
the laws of physics.
! If you have the vehicle towed with the
front or rear axle raised, the ignition must
be switched off (key in position 0or 1in the
ignition lock). Intervention by ESP ®
could
otherwise destroy the braking system on
the front or rear axle.
! Vehicles with 4MATIC* may not be towed
with the front or rear axle raised.
! Vehicles with 4MATIC*: operate the vehi-
cle only briefly (for a maximum of ten sec-
onds) on a brake dynamometer. Turn the
key in the ignition lock to position 0or 1.
You could otherwise damage the drive train
or the brake system.
! Vehicles with 4MATIC*: function or per-
formance tests may only be carried out on
a 2-axle dynamometer. If you wish to oper-
ate the vehicle on such a dynamometer,
please consult a Mercedes-Benz Service
Centre in advance. You could otherwise
damage the drive train or the brake system. i
Only use wheels with the recommended
tyre sizes. Only then will ESP ®
function
properly.
ESP ®
trailer stabilisation If your trailer begins to lurch, you can only
stabilise the vehicle/trailer combination by
depressing the brake firmly.
In this situation, ESP
®
assists you and detects
if the trailer begins to lurch. ESP ®
slows the
vehicle down by braking and limiting the
engine output so the vehicle/trailer combi-
nation can stabilise.
Trailer stabilisation is active from about
65 km/h. G
Risk of accident
If road and weather conditions are bad,
trailer stabilisation will not be able to pre-
vent the trailer from swerving and thereby
reduce the risk of accident. Trailers with a
high centre of gravity can tip over before
ESP ®
can detect this.
Trailer stabilising does not work if ESP ®
is
deactivated or disabled because of a mal-
function. Safety
* optional
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