Mercedes S-Class W-220

since 1998 release

Repair and operation of the car

Mercedes W220
+ Mercedes-Benz cars of the class S (W220)
+ Operation manual
+ Routine maintenance
+ Engine
- Cooling system and heating
   + Cooling system
   + Systems of ventilation, heating and air conditioning
+ Power supply system and release
+ Engine electric equipment
+ Automatic transmission
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

Cooling system and heating

General parameters

Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type

Design Thermosiphon with the bladed water pump. Thermostatic adjustment. With a separate broad tank. The fan with the electric drive, joins and switched off by a two-level thermoswitch
Cooling liquid Mix of soft water and antifreeze (1:1), at such structure is provided frost resistance to –35 °C
MB No. Q1 03 0002
Volume of system, l
12 l
Composition of cooling liquid:
Antifreeze share in cooling liquid for ensuring frost resistance
  • to -37 °C
  • to -45 °C
Pressure in system About 1.2 bars (the exact size is specified on a cover расширительнго a tank). The cover has to maintain pressure within two minutes.
Valve stroke
not less than 7 mm
  • Petrol engines, l

Beginning of opening

82 °

Full opening

96 °
  • Petrol engines, l

Beginning of opening

92 °

Full opening

99 °
  • Diesel engines

Beginning of opening

87 °

Full opening

102 °
Fan thermoswitch
Inclusion/switching off of the 1st step
92-97/84-91 °C
Inclusion/switching off of the 2nd step
99-105/91-98 °C
Conditioner coolant
R134a (do not use R12)
Volume, гр.
± 15
Refrigerator oil
Volume, cm 3
Efforts of tightening of threaded connections, H • m
The moments of an inhaling of fixture are given in the text of the Head and on some illyustratsiyakh*.
* The moments of an inhaling highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately