258 Engine compartment
Technical
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index
Adding coolant
If c oolan t has  to b e ad de d,  a 50 / 5 0  m ixture of water and  
MB anticorrosion / antifreeze should be added.
The drain plugs for the cooling system are located on 
the right side of the engine block and at the bottom of 
the radiator.
Anticorrosion / antifreeze mixture, see page 323.
Wa r n i n g !
In order to avoid possible serious burns or injury:
• Use extreme caution when opening the hood if 
there are any signs of steam or coolant leaking 
from the cooling system, or if the coolant 
temperature gauge indicates that the coolant is 
overheated.• Do not remove pressure cap on coolant 
reservoir if engine temperature is above 194
°F 
(90
°C). Allow engine to cool down before 
removing cap. The coolant reservoir contains 
hot fluid and is under pressure.
• Using a rag, slowly open cap approximately 
1/2 turn to relieve excess pressure. If opened 
immediately, scalding hot fluid and steam will 
be blown out under pressure.• Do not spill antifreeze on hot engine parts. 
Antifreeze contains ethylene glycol which may 
burn if it comes into contact with hot engine 
parts.
J_A208.book Seite 258 Donnerstag, 31. Mai 2001 9:35 09