Abstract: A cooling system for an internal-combustion engine of a motor vehicle having a radiator and a thermostatic valve by which the temperature of the coolant can be controlled in a warm-up operation, a mixed operation and a radiator operation. The thermostatic valve contains an expansion element which can be electrically heated for reducing the coolant temperature, the expansion element being designed such that the coolant temperature is set without heating the expansion element in the warm-up operation and/or in the mixed operation to an upper working limit temperature.

Abstract: The invention provides a method for detecting the improper interchanged installation of left and right lambda probes in an internal-combustion engine having two cylinder banks, each of which has an exhaust gas catalyst with a lambda probe and a lambda control unit assigned thereto, and whose injection valves can be switched off at least by cylinder bank. The injection valves of one of the two cylinder banks are switched off at least for a time which corresponds to the reaction time or change-over time of the lambda probes. The signal from the lambda probe assigned to the switched-off cylinder bank is then compared with a predetermined threshold value at the end of the switch-off time of the injection valves. An incorrect connection of the lambda probes is detected when the lambda probe signal exceeds or falls below the threshold value.