COOLING SYSTEM

The invention relates to a cooling system () for a vehicle. The cooling system () comprises a cooling circuit () having a first and second heat source () and a first and second radiator (). In the cooling circuit (), the heat sources () and the radiator () are connected in series with one another. A hydraulic switch () divides the cooling circuit () into two partial circuits (). The respective partial circuit () each includes the respective heat sources (a, ) and the respective radiator (a, ). The invention also relates to a method for operating the cooling system ().