Abstract: Method and device for controlling an auxiliary unit (10) in a motor vehicle by means of a device consisting of a control unit (40) and a switch (30) for switching the auxiliary unit on and off. To ensure the maintenance of an auxiliary unit of this type and to prolong its life using simple means, it is proposed, among other things, that the control unit (40) will repeatedly signal actions to be taken to a driver of the vehicle or directly to the switch. A first action is the switch-on of the switched-off auxiliary unit (10) at a specific point in time if it (the unit) has been switched off for a long period of at least some weeks. A second, succeeding action is the switch-off of the unit (10) switched on in the manner described, after a short period of at least some minutes.

Abstract: The present invention relates to an arrangement (1) for calculating the temperature T in a driver's compartment (2) of a vehicle. The arrangement (1) incorporates a temperature sensor (4) arranged in a duct (5) and means (6) designed to allow an air flow from said driver's compartment (2) to pass through said duct (5), and said temperature sensor (4) is designed to measure a first temperature level T1 of said airflow. Said means (6) are also designed to halt said air flow for a period of time and said temperature sensor (4) is designed to measure, towards the end of said period of time, a second temperature level T2. The temperature T is calculated on the basis of said first temperature level T1 and said second temperature level T2.

Abstract: Method and device for controlling an auxiliary unit (10) in a motor vehicle by means of a device consisting of a control unit (40) and a switch (30) for switching the auxiliary unit on and off. To ensure the maintenance of an auxiliary unit of this type and to prolong its life using simple means, it is proposed, among other things, that the control unit (40) will repeatedly signal actions to be taken to a driver of the vehicle or directly to the switch. A first action is the switch-on of the switched-off auxiliary unit (10) at a specific point in time if it (the unit) has been switched off for a long period of at least some weeks. A second, succeeding action is the switch-off of the unit (10) switched on in the manner described, after a short period of at least some minutes.

Abstract: An arrangement for ventilation of a space in a vehicle incorporating at least one first outlet device (6) for discharge of air from the space and at least a second outlet device (7) for discharge of air from the space. The first outlet device (6) is arranged at a higher position than the second outlet device (7). Means (10, 11) are designed to allow discharge of air from the space in such a way that a main portion of the air discharged flows through the first outlet device (6) when the temperature of an environment is relatively high and that the main portion of the air discharged flows through the second outlet device (7) when the temperature of the environment is relatively low.

Abstract: A method and apparatus for controlling a solenoid-operated valve element are provided. The valve element is movable between first and second end positions, and is urgable toward the first end position by magnetic attraction caused by activation of the solenoid and is normally urged toward the second end position. The method further enables detection of the time at which the valve element returns to the second end position from the first end position after deactivation of the solenoid.