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Introduction of the New smart fortwo coupé and smart forfour | Model Series 453
Cooling
Powerplant
Cooling system
Depending on the equipment variant, the new smart can be
equipped with up to two independently operating coolant
circuits. A high-temperature (HT) circuit, which also cools the
turbocharger in addition to the engine and cylinder head, as
well as a low-temperature (NT) circuit used for temperature
regulation of the charge air.
Vehicles without turbocharger are only equipped with a high-
temperature (HT) circuit.
The vehicle is also equipped with an additional fan at the rear
end.
B
Note
The cooling system must be filled and bled only when
the engine is cold.
Cooling components of turbocharged engine
1 NT radiator (only with turbo)
2 Engine radiator (HT radiator)
3 Expansion reservoir
4 Additional fan
5 Turbocharger
6 Engine oil cooler
7 Low-temperature circuit
8 High-temperature circuit
9 Fan housing with fan motor
– This printout will not be recorded by the update service. Status: 06/2014 –
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