engine MERCEDES-BENZ C-CLASS ESTATE 2007 Workshop Manual

Engine compartment
207The electronic ignition system uses high
voltage. For this reason you must never
touch components of the ignition system
(ignition coil, ignition cable, spark plug con-
nector, test socket) when :
R the engine is running
R the engine is being started
R the ignition is switched on and the engine
is being cranked by hand
Vehicles with a diesel engine :
The electronic injection control uses high
voltage. Therefore, never touch fuel injec -
tion system components when:
R the engine is running
R the engine is being started
R the ignition is switched on
X Make sure that the windscreen wipers are
switched off. G
Risk of injury
The windscreen wipers and wiper rod s
could be set in motion.
When the bonnet is open, you or others
could be injured by the wiper rods. Make sure that the windscreen wipers are
switched off and that the key has bee
n
pulled out of the ignition lock before open-
ing the bonnet.
The bonnet release lever is located in the
driver's footwell above the parking brake. 1
Bonnet release lever
X Pull release lever 1.
The bonnet is released.
! Make sure that the windscreen wipers
are not folded away from the windscreen .
You could otherwise damage the wind-
screen wipers or the bonnet. The handle for opening the bonnet is located
above the radiator grille.
1
Bonnet catch handle
X Reach into the gap, pull bonnet catch han -
dle 1up and lift the bonnet.
Closing G
Risk of injury
Make sure that nobody can become trap -
ped as you close the bonnet.
X Lower the bonnet and let it fall from a
height of approximately 20 cm. The bonnet
engages into place. Operation
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 207

Engine compartment
208 Engine oil
Depending on how it is driven, the vehicl e
consumes a maximum of 0.8 l oil per 1,000
km. The oil consumption may be higher than
this when the vehicle is new or if you fre-
quently drive at high engine speeds. You can
only estimate the oil consumption after yo u
have driven a considerable distance.
You will find further information about engine
oil in the "Technical data" section
( Y page 336).
Checking the engine oil level Before checking the engine oil level the fol-
lowing conditions for the vehicle should be
met:
R
It should be parked on level ground
R The engine should be switched off for at
least five minutes if the engine was at nor-
mal operating temperature
R The engine should be switched off for at
least 30 minutes if the engine was not at
operating temperature (i.e. if you only star-
ted the engine briefly) Using the oil dipstick
Illustration: vehicle with a petrol engine
1
Oil dipstick
2 Upper mark
3 Lower mark Example illustration of a vehicle with a diese
l
engine
1 Oil dipstick
2 Upper mark
3 Lower mark
X Pull oil dipstick 1out of the oil dipstick
tube.
X Wide off oil dipstick 1.
X Insert oil dipstick 1into the oil dipstick
tube to the stop, and take it out again.
The oil level is correct if the level is between
lower mark 3and upper mark 2.
X Top up the oil if necessary (Y page 209).
i The difference in quantity between lower
mark 3and upper mark 2is approxi-
mately 2 litres. Operation
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 208

Engine compartment
209
Topping up the engine oil
Illustration: vehicle with a petrol engin
e
1 Cove r Example illustration of a vehicle with a diese
l
engine
1 Cove r X
Unscrew cap 1and remove it.
X Top up by the amount of oil required.
! Do not add too much oil. If too much oil
is added, there is a risk of damage to the
engine or the catalytic converter.
X Screw cap 1onto the filler neck. H
Environmental not
e
When topping up the oil, take care not to
spill any. Oil must not be allowed to escape
into the soil or waterways. You would oth-
erwise be damaging the environment . Coolan
t G
Risk of injury
The cooling system is pressurised. There-
fore, only unscrew the cap once the engine
has cooled down. This means the coolant
temperature gauge must display less than
70 °C. You could otherwise be scalded by
escaping hot coolant.
Coolant consists of water and antifreeze/cor -
rosion inhibitor. Only check the coolant leve l
when the vehicle is on a level surface and th e
engine has cooled down. Checking the coolant level The expansion tank is located in the engin
e
compartment on the right-hand side of the
vehicle . 1
Cove r
2 Expansion tank
3 Marker bar
X Slowly turn cap 1by half a turn anti-clock -
wise to allow excess pressure to escape.
X Turn cap 1further anti-clockwise and
remove it.
There is sufficient coolant in expansion
tank 2if the coolant is level with marker
bar 3in the filler neck when cold or
approximately 1.5 cm higher when hot .
X Top up the coolant if necessary. Operation
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 209 Z

Tyres and wheels
21
0
X
Replace cap 1and tighten all the way to
the stop.
You will find further information about coolan t
in the "Technical data" section
( Y page 368). Windscreen washer system/head-
lamp cleaning system
*
The washer fluid reservoir is located in the
engine compartment on the left-hand side of
the vehicle. The headlamp cleaning system*
is also supplied from the washer fluid reser-
voir. 1
Cove r
X Add windscreen washer concentrate to the
washer fluid all year round. G
Risk of fire
Windscreen washer concentrate is highly
flammable. Fire, naked flames and smoking
are prohibited when windscreen washe r
concentrate is being handled.
Use :
R a windscreen washer fluid additive
such as MB Summerwash to preven t
smearing (for temperatures above freez-
ing).
R a windscreen washer fluid additive wit h
antifreeze properties such as MB Winter-
wash (if there is a risk of frost).
X Mix the windscreen washer fluid in a con-
tainer beforehand. Adapt the mixing ratio
to the outside temperatures.
! Only use windscreen washer fluid which
is suitable for plastic lamp lenses. Unsuit-
able windscreen washer fluid could dam-
age the plastic lamp lenses of the head-
lamps.
X To open: pull cap1upwards by the tab .
X To close: press cap 1onto the filler neck
until it clicks into place. Tyres and wheels
Points to remember
! For safety reasons, Mercedes-Benz rec-
ommends that you only use tyres and
wheels which have been approved by
Mercedes-Benz specifically for your vehi-
cle. These tyres have been specially adap-
ted for use with the control systems, such
as ABS or ESP, and are marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(with run-flat characteristics)
Mercedes-Benz Original Extended tyres
should only be used on wheels that have
been specifically approved by Mercedes-
Benz.
If you use other tyres and wheels,
Mercedes-Benz cannot accept any respon-
sibility for damage that may result from
this. Further information about tyres,
wheels and approved combinations can be
obtained from any Mercedes-Benz Service
Centre.
If you use tyres other than those tested and
recommended for Mercedes-Benz vehi-
cles, characteristics such as handling, vehi-
cle noise emissions and fuel consumption Operation
* optional
204_AKB; 2; 3, en-GB
mkalafa
, 2007-06-26T23:11:51+02:00 - Seite 210

Driving
tips 21
7 Snow chains
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains which
have been specially approved for your vehicle
by Mercedes-Benz or are of a correspondin g
standard of quality.
! Information about the use of snow chain
compatible AMG winter tyres is applicable
for AMG tyres. Use of snow chains is only
permissible with these tyres.
If you intend to fit snow chains, please bear
the following points in mind:
R Snow chains cannot be fitted on all wheel /
tyre combinations .
R Snow chains cannot be fitted to emergency
spare wheels, e.g. on a "Minispare" emer-
gency spare wheel .
R Always fit snow chains on both the rea r
wheels, even on vehicles with 4MATIC* .
Comply with the manufacturer's installa-
tion instructions.
! If snow chains are fitted to the fron t
wheels, they may come into contact with
the bodywork and axle components when
the vehicle is in motion and damage th e
tyre or the vehicle. Do not exceed the maximum permissibl
e
speed of 50 km/h.
i You may wish to deactivate ES P®
when
pulling away with snow chains fitted
( Y page 68). This way you can allow the
wheels to spin in a controlled manner, ach-
ieving an increased driving force (cutting
action). Winter driving
G
Risk of accident
Do not shift down for additional engine
braking on a slippery road surface. Thi s
could cause the drive wheels to lose thei r
grip and the vehicle could skid.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Vehicles with manual transmission: engage
neutral.
X Vehicles with automatic transmission*:
shift the selector lever to N.
X Try to bring the vehicle under control using
corrective steering. Driving tips
Rolling with the engine switched off
G
Risk of accident
Never switch the engine off while the vehi-
cle is in motion.
There is no power assistance for the steer-
ing and the service brake when the engine
is not running.
You will require considerably more effort to
steer and brake and you could therefore
lose control of the vehicle and cause an
accident. Brakin
g G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. Thi s
could cause the drive wheels to lose thei r
grip and the vehicle could skid. G
Risk of accident
Make sure that other road users are not
endangered by your braking. Operatio
n
* optional
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 217

Driving
tips 21
8
Downhill gradient
sOn long and steep downhill stretches, espe-
cially if the vehicle is laden or towing a trailer,
you must shift to a lower gear in good time or,
on vehicles with automatic transmission*,
select shift range 1,2 or 3.
i This also applies if you have activated
cruise control* or Speedtronic*.
This uses the braking effect of the engine and
you will not have to brake to such an exten t
to maintain the same speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. If you need additional braking ,
depress the brake pedal repeatedly rather
than continuously.
Heavy and light loads If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the air-
flow to cool the brakes more quickly. G
Risk of accident
Never depress the brake pedal continu -
ously while the vehicle is in motion, e.g.
never cause the brakes to rub by applying constant slight pedal pressure. This causes
the brake system to overheat, increases
the braking distance and can lead to the
brakes failing completely.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed. This improves the grip of the
brakes.
Wet roads If you drive for a long time in the rain without
braking, there may be a delayed reaction
when you first brake and you will have to
depress the pedal harder.
You must therefore maintain a greater dis-
tance from the vehicle in front.
Brake firmly after driving on a wet road. Thi
s
way the brake discs will become warm, dryin g
more quickly, which will protect them against
corrosion. Limited braking performance on salted
roads G
Risk of accident
The layer of salt on the brake discs and the
brake linings may cause a delay in the brak-
ing effect, resulting in a significantly longer
braking distance, which could lead to an
accident.
To avoid this danger, you should:
R occasionally brake carefully when you
are driving on salted roads, so that any
layer of salt that may have started to
build up on the brake discs and the brake
linings is removed without putting other
road users at risk.
R maintain a greater distance to the vehicl e
ahead and drive with particular car e
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues ar e
removed from the brake disc.
New brake linings For safety reasons, Mercedes-Benz recom
-
mends that you have only brake pads/linings
fitted to your vehicle that have been approved Operation
* optional
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 218

Driving
tips 21
9
for Mercedes-Benz vehicles or which corre-
spond to an equivalent quality standard.
Brake pads/linings which have not been
approved for Mercedes-Benz or which which
are not of an equivalent quality could affect
your vehicle's operating safety. G
Risk of accident
New brake linings only reach their optimum
braking effect after several hundred kilo-
metres of driving. Before this optimum
braking effect is reached, you should com-
pensate for the reduced braking effect by
applying greater pressure when braking.
This also applies after the brake discs or the
brake linings have been replaced .Tyre gri
p G
Risk of accident
Whereas the vehicle can be fully controlle d
at a certain speed on dry roads, you must
reduce your speed on wet or icy roads to
achieve the same road safety. Otherwise
you could cause an accident.
Pay particular attention to the road condi-
tions at temperatures around freezing
point. If ice has formed on the road surface (e.g.
from fog), a light film of water rapidly forms
on the ice when you brake, considerably
reducing tyre grip. Drive with particular
care in such weather conditions.
Driving on wet roads
If water has accumulated to a certain dept h
on the road surface, there is a danger of aqua-
planing occurring, even if:
R you drive at low speeds
R the tyres have adequate tread depth
For this reason, do not drive in tyre ruts, and
brake carefully. Driving on flooded roads
If you have to drive on stretches of road on
which water has collected, please bear in
mind that:
R the maximum permitted still water depth is
25 cm.
R you should drive no faster than at walkin g
pace.
! Bear in mind that vehicles travelling in
front or in the opposite direction creat e
waves. This may cause the maximum per-
missible water depth to be exceeded.
You must observe these notes, otherwise
damage may occur to the engine, electrics
and transmission . Operation
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 219

Trailer towing*
22
3
R
has an increased braking distance
R is affected more by strong crosswinds
R demands more sensitive steering
R consumes more fue l
On long and steep downhill gradients you
must select a lower gear in good time, or on
vehicles with automatic transmission*, select
the shift range 1,2 or 3.
i This also applies if you have activated
cruise control* or Speedtronic*.
This uses the braking effect of the engine and
you will not have to brake to such an exten t
to maintain the same speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. If you need additional braking ,
depress the brake pedal repeatedly rather
than continuously. G
Risk of accident
Never depress the brake pedal continu -
ously while the vehicle is in motion, e.g.
never cause the brakes to rub by applying
constant slight pedal pressure. This causes
the brake system to overheat, increases
the braking distance and can lead to the
brakes failing completely. Driving tips
R
Maintain a greater distance from the vehi-
cle in front than when driving without a
trailer.
R Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then increase the braking force rapidly.
R The values given for gradient-climbing
capabilities from a standstill refer to sea
level. When driving in mountainous areas,
note that the power output of the engine
and with it its gradient-climbing capability
decrease with increasing altitude.
If the trailer swings from side to side:
X Do not accelerate.
X Do not counter-steer.
X Brake if necessary. G
Risk of accident
On no account should you attempt to dra w
the vehicle/trailer combination out by
increasing speed. Folding in the ball couplin
g
i Fold in the ball coupling when you are not
using the trailer tow hitch . G
Risk of injury
Make sure that no persons or animals are
in the pivoting range of the ball coupling.
Otherwise, they could be injured .
The release wheel is located behind the side
trim panel in the boot/luggage compartment. Saloon
1 Handl e
2 Cove r Operation
* optional
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 223

Where will I find...?
234
The fire extinguisher is located underneath
the front of the driver's seat.
1
Tab
2 Fire extinguishe r
X Pull tab 1upwards.
X Remove fire extinguisher 2. Vehicle tool kit, TIREFIT kit, jack
,
spare wheel* and "Minispare" emer-
gency spare wheel*
The vehicle tool kit, TIREFIT kit etc. can be
found on the left of the stowage well under
the boot/luggage compartment floor.
X Saloon: open the stowage well under the
floor of the boot (Y page 184).
X Estate: open the stowage well under th e
floor of the luggage compartment
( Y page 184).
The vehicle tool kit contains :
R A towing ey e
R A wheel wrench
R A folding wheel chock
R Spare fuses
R A pair of glove s G
Risk of injury
The jack is designed only to raise and hol d
the vehicle for a short time while a whee l
is being changed.
If you are carrying out work on the vehicle,
you must use stands.
Make sure that the jack is placed on a firm ,
non-slip and level surface. Do not us e wooden blocks or similar objects as a jac
k
underlay. Otherwise the jack will not be
able to achieve its load-bearing capacit y
due to the restricted height.
Do not start the engine at any time while a
wheel is being changed.
Do not lie under the vehicle when it is bein g
supported by the jack. If you do not raise
the vehicle as described, it could slip off the
jack (e.g. if the engine is started or a door
or the boot lid is opened or closed) and you
could be seriously injured.
Do not lie under the vehicle when it is being
supported by the jack. If you do not raise
the vehicle as described, it could slip off the
jack (e.g. if the engine is started or a door
or the boot lid/tailgate is opened or closed)
and you could be seriously injured.
i When using the jack, you should also
observe the safety notes in the "Flat tyre"
section (Y page 313). Practical advice
* optional
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 234

Display
messages 24
2 Display messages Possible cause/consequence Possible solution
Check brake
fluid level
G
Risk of accident
There is insufficient brake fluid in the
brake fluid reservoir. In addition, the
3 warning lamp in the instrument clus-
ter lights up and a warning tone sounds. X
Pull over as soon as it is safe to do so.
X Do not continue driving under any circumstan-
ces .
X Consult the nearest qualified specialist work -
shop.
X Do not top up the brake fluid. This will not rec -
tify the malfunction. P
Shift to
P P
Shift to
P You have switched off the engine with the
KEYLESS GO* button and opened the driv-
er's door.
You have attempted to lock the vehicle. X
Move the selector lever to P.
The engine can be started again. To start
engine, shift
to either P or
N To start engine,
shift to either
P
or N You have attempted to start the engin
e
while the selector lever is not in position
P or N. X
Move the selector lever to Por N. Clean the fuel
filter X
Visit a qualified specialist workshop. Practical advice
* optional
204_AKB; 2; 3, en-GB
mkalafa,
2007-06-26T23:11:51+02:00 - Seite 242