NOVELTY - The system (2) has a fuel cell i.e. proton exchange membrane fuel cell, components to be cooled, and a cooling circuit (3). The cooling circuit dissipates the waste heat produced by the fuel cell via a vehicle radiator (4) to a surrounding area. The components to be cooled comprises of an additional cooling circuit with a coolant conveying device and a cooling heat exchanger (9). The cooling heat exchanger is arranged in a vehicle (1) independent of the vehicle radiator. The components comprise of a rotary shaft, which drives the coolant conveying device.    USE - Fuel cell system for use in bottom area or a front area or a rear area of a vehicle i.e. car (from drawings).    ADVANTAGE - The fuel cell system utilizes the surface of the vehicle radiator for cooling the fuel cell in an ideal manner. The design of the system enables cooling of the components in the system at reduced expenditure regarding to the control and the pipeline. The cooling heat exchanger of the additional cooling circuit is arranged in the vehicle independent of the vehicle radiator, thus achieving desired cooling of the components to be cooled. The system avoids entering of heat into a fuel cell cooling circuit, thus avoiding impairment of cooling of the fuel cells. The cooling surfaces are adjusted to components to be cooled, thus operating the fuel cell system in a secure and reliable manner with minimum requirement of the cooling surfaces. The fuel cells are cooled in an improved manner without modification of construction and design of the vehicle, thus increasing the service life of the fuel cells.    DETAILED DESCRIPTION - The components to be cooled comprise of an anode gas-recirculation blower or hydrogen recirculation blower, a motor in a drive strand of the vehicle and an electrical turbo charger.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a vehicle with a fuel cell system.    Vehicle (1)    Fuel cell system (2)    Cooling circuit (3)    Vehicle radiator (4)    Blower (5)    Drive motor (6)    Hydrogen storage device (7)    Cooling heat exchanger (9)