Car engine cooling system Mercedes S-Class (W140)

Cooling and Heating Systems — General Information
Engine cooling system All models of the vehicles considered in this Manual are equipped with a positive pressure engine cooling system with thermostatic control of the...

Cooling and Heating System Specifications
Note: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold. Design Thermosiphon with a...

Antifreeze is a means of protection against freezing
Caution! Avoid contact of antifreeze with exposed areas of the body and painted surfaces of the vehicle. Any accidental splashes should be washed off immediately with...

Coolant Replacement — General Notes
Note: See also Section Checking the functioning of the cooling system and frost resistance of the coolant, replacing the liquid in the Chapter Routine maintenance...

Removal and replacing cooling system hoses
Note: See also Section Checking the condition and replacing engine compartment hoses, localizing leaks in the Chapter Routine maintenance 1. If, as a result of the...

Checking the proper functioning of the thermostat
Checking without removing the thermostat 1. Before removing and checking the thermostat, make sure that the engine cooling problems are not due to insufficient coolant...

Removal and installation the thermostat
Thermostat installation details Thermostat installation details for models with M104.94/99 series petrol engines; thermostat is installed with a ball valve (indicated by...

Removal and installation the cooling system radiator
Cooling system radiator installation details Details of installation of the radiator of the cooling system on petrol models of the M104.94/99 series 1 - Lower protective...

Removal and installation the water pump
Removal Petrol models with engines of the M119.97/98 series Water pump installation details on models with M119.97/98 series engines 1 - Eye; 2 - Lid; 3 - Cooling system...

Ventilation, heating and air conditioning systems
Note: See also Section Comfort Chapters User manual The air supplied by the ventilation system to the car's interior through the filter can be heated or cooled depending...

Fan Shroud and Fan Assembly — Installation Details
Using the example of a petrol model with an M120.980/982 series engine. Fan shroud and fan assembly installation details 1 - Decorative cladding; 2 - Cross beam; 5 - Fan...

Air Conditioning System — Information and Precautions
General information The air conditioning system consists of a condenser located in front of the radiator of the cooling system, an evaporator located near the heat...

Location of the main components of the automatic air conditioning system
The air conditioning compressor is located in the engine compartment (left front corner of the power unit). The HVAC fan drive motor is located under a cover on the...

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W140 (1991-1998)