Abstract: A closure element is provided for a fuel tank of a motor vehicle, in which tank an at least slight excess pressure and/or vacuum may exist. An indication is provided on the closure element, by which indication the operator is informed of the presence of excess pressure and/or vacuum in the tank. The indication takes place mechanically by way of a mechanical pressure sensor, specifically with respect to the presence of essentially ambient pressure or excess pressure by use of different colors. For this purpose, an indicating dial can be provided in the closure element, which indicating dial can be rotated by way of a pin displaceable against a spring force under the influence of the pressure existing in the tank. A jacket segment being recognizable by the operator through a window.

Abstract: An electromechanical parking brake for a motor vehicle is provided. The electromechanical parking brake includes an operating element that operates a wheel brake, a central control unit that provides an electric supply to the operating element via at least one supply line, an electric actuating unit for interrupting the supply to the operating element, and a control line that connects the central control unit with the electric actuating unit. The operating element and the electric actuating unit are arranged at the motor vehicle in a manner protected against external manual access. The central control unit controls the electric actuating unit via the control line in order to interrupt the supply to the operating element or to reestablish the supply to the operating element. The central control unit also monitors the control line to detect a manipulation of the control line.

Abstract: An electromechanical parking brake for a motor vehicle is provided. The electromechanical parking brake includes an operating element that operates a wheel brake, a central control unit that provides an electric supply to the operating element via at least one supply line, an electric actuating unit for interrupting the supply to the operating element, and a control line that connects the central control unit with the electric actuating unit. The operating element and the electric actuating unit are arranged at the motor vehicle in a manner protected against external manual access. The central control unit controls the electric actuating unit via the control line in order to interrupt the supply to the operating element or to reestablish the supply to the operating element. The central control unit also monitors the control line to detect a manipulation of the control line.

Abstract: A closure element is provided for a fuel tank of a motor vehicle, in which tank an at least slight excess pressure and/or vacuum may exist. An indication is provided on the closure element, by which indication the operator is informed of the presence of excess pressure and/or vacuum in the tank. The indication takes place mechanically by way of a mechanical pressure sensor, specifically with respect to the presence of essentially ambient pressure or excess pressure by use of different colors. For this purpose, an indicating dial can be provided in the closure element, which indicating dial can be rotated by way of a pin displaceable against a spring force under the influence of the pressure existing in the tank. A jacket segment being recognizable by the operator through a window.