coolant reservoir MERCEDES-BENZ SLK ROADSTER 2008 Owners Manual

Engine compartment
154 Coolan
t G
Risk of injury
The cooling system is pressurised. There-
fore, only unscrew the cap once the engine
has cooled down. The coolant temperature
gauge must display less than 70°C. Yo u
could otherwise be scalded by escaping hot
coolant.
Coolant consists of water and antifreeze/cor-
rosion inhibitor. Only check the coolant level
when the vehicle is on a level surface and the
engine has cooled down. Checking the coolant leve
l The expansion tank is located in the engine
compartment on the right-hand side of the
vehicle when viewed in the direction of travel.
1
Expansion tank
2 Cove r
3 Marker bar
X Slowly turn cap 2by half a turn anti-clock -
wise to allow excess pressure to escape.
X Turn cap 2further anti-clockwise and
remove it.
There is sufficient coolant in expansion
tank 1if 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.
X Replace cap 2and tighten all the way to
the stop.
You will find further information about coolan t
in the "Technical data" section
( Y page 259). Windscreen washer system/head-
lamp cleaning system
*
The washer fluid reservoir is located in the
engine compartment on the right when
viewed in the direction of travel. The head-
lamp cleaning system* is also supplied from
the washer fluid reservoir. 1
Cove r Operation
* optional
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Display
messages 18
0 Display messages Possible cause/consequence Possible solution
D The cooling fan for the coolant is faulty. X
If the coolant temperature is less than 120†,
you can continue driving to the nearest quali-
fied specialist workshop.
X In doing so, avoid heavy loads on the engine
(e.g. driving in mountainous terrain) and stop-
and-go driving. # The battery is not being charged. Possible
causes are a torn poly-V-belt or a faulty
alternator. X
Stop immediately and safely when traffic con-
ditions allow and check the poly-V-belt.
X If it has torn: do not drive on. Contact th e
nearest qualified specialist workshop .
X If it is not damaged :have the vehicle checked
immediately at a qualified specialist workshop. 2 Brake wear The brake pads/linings have reached
their wear limit. X
Have the brake pads/linings replaced as soon
as possible at a qualified specialist workshop .3 Check brake fluid
level
G
Risk of accident
There is insufficient brake fluid in the
brake fluid reservoir. 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. Practical advice
171_AKB; 3; 4, en-G
B
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Service products and capacities
260
Capacities The following values indicate the total cooling system capacities.
SLK 200 KOMPRESSOR SLK 280 SLK 350 SLK 55 AMG
Coolant 8.2
l 9.8
l 9.8
l 11.1
l Amount of antifreeze/corrosion inhibitor required for antifreeze protection
Down to –37 °C
(approximately 50%) 4.1
l 4.9
l 4.9
l 5.55
l Down to –45 °C
(approximately 55%) 4.5
l 5.4
l 5.4
l 6.1
l Brake fluid
Over a period of time, the brake fluid absorbs
moisture from the air; this lowers its boiling
point. G
Risk of accident
If the boiling point of the brake fluid is too
low, vapour pockets may form in the brake
system when the brakes are applied hard
(e.g. when driving downhill). This woul d
impair braking efficiency.
Have the brake fluid renewed every two
years with a brake fluid that has been approved by Mercedes-Benz and have this
confirmed in the Service Booklet.
i There is usually a notice in the engine
compartment to remind you when the next
brake fluid change is due. Windscreen washer system
The washer fluid reservoir holds approxi-
mately 7 litres.
The headlamp cleaning system* and the
windscreen washer system are both supplied
from the washer fluid reservoir.
X At temperatures above freezing point:
Top up the washer fluid reservoir with a
mixture of water and windscreen washer
concentrate (Y page 154).
X At temperatures below freezing point:
Top up the washer fluid reservoir with a
mixture of water, antifreeze and wind-
screen washer concentrate (Y page 154). Technical data
* optional
171_AKB; 3; 4, en-GB
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