Cooling and heating systems Mercedes S-Class (W220)

General parameters of cooling and heating systems
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...

General description of the cooling system
Cooling system circuit diagram 1 - Heater; 2 - Engine; 3 - Thermostat; 4 - Water pump; 5 - Expansion tank; 6 - Lid with valve; 7 - Radiator; 8 - Bypass hose; 9 - Oil...

Antifreeze is a means of protection against freezing
Expansion tank of the cooling system The cooling system is filled with a mixture of water, antifreeze and anti-corrosion agent all year round. This prevents rust and...

Coolant Replacement — General Notes
Coolant level sensor (on the expansion tank) The coolant must be replaced when the cooling system is repaired, in which the liquid is drained. In the event that the...

Removal and replacing cooling system hoses
Warning! Observe the precautions specified in Section Checking the condition and replacing engine compartment hoses, localizing leaks . 1. If, as a result of the...

Removal and checking the thermostat
1. Before removing and checking the thermostat, make sure that the engine cooling problems are not due to insufficient coolant or poor drive belt tension. Make sure the...

Ventilation, heating and air conditioning systems
Functional diagram of the air conditioner refrigerator 1 - Compressor K/V; 2 - Capacitor; 3 - Receiver-dryer; 4 - Expansion valve; 5 - Evaporator; 6 - Rear air...

Air Conditioning System — General Information and Precautions
Functional diagram of the HF circuit 1 - End cap; 2 - Expansion tank; 3 - Radiator; 4 - Thermostat; 5 - Water pump; 6 - Oil filter equipped with heat exchanger; 7 -...

Location of the main electrical components of the air conditioning system
The locations of the sensors, control units and drive servomotors are shown in the illustrations: Location of the cooling fan control unit (on the right behind the...

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W140 (1991-1998)