Mercedes-Benz SLK Operator's Manual page 281

Checking and adding other service
products
Checking the coolant level
G
WARNING
In order to avoid potentially serious burns:
use extreme caution when opening the
R
hood if there are any signs of vapor or
coolant leaking from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
do not remove the pressure cap on the
R
coolant tank if the coolant temperature is
above 158 ‡ (70 †). Allow the engine to
cool down before removing the cap. The
coolant tank contains hot fluid and is under
pressure.
using a cloth, slowly turn the cap
R
approximately Ö turn to relieve excess
pressure. If you open the cap immediately,
pressurized scalding hot fluid and vapor will
be blown out.
do not spill antifreeze on hot engine parts.
R
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts.
Example
Park the vehicle on a level surface.
X
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
Turn the SmartKey to position 2 in the
X
ignition lock ( page 135).
Y
Engine compartment
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
Check the coolant temperature gauge in
X
the multifunction display.
The coolant temperature must be below
158 ‡ (70 †).
Turn the SmartKey to position
X
0 ( page 135) in the ignition lock.
Y
Slowly turn cap ; half a turn counter-
X
clockwise to allow excess pressure to
escape.
Turn cap ; further counter-clockwise and
X
remove it.
If the coolant is at the level of marker bar
= in the filler neck when cold, there is
enough coolant in coolant expansion
tank :.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar = in the filler
neck when warm, there is enough coolant
in coolant expansion tank :.
If necessary, add coolant that has been
X
tested and approved by Mercedes-Benz.
Replace cap ; and turn it clockwise as far
X
as it will go.
For further information on coolant, see
( page 351).
Y
Windshield washer system and
headlamp cleaning system
G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
279
page 136).
Y
Z