Abstract: Method and device for calculating chassis height of a vehicle that has at least three air-suspended wheel axles (2, 3, 4). The device includes a control unit and two level sensors (9, 10). The control unit detects the chassis height at the front axle (2) via a first level sensor (9) and at the forward rear axle (3) via a second level sensor (10), and the control unit calculates the chassis height at the rearmost wheel axle (4). An object of the disclosure is to protect the rear axle installation with as few level sensors as possible.

Abstract: Method and device for calculating chassis height of a vehicle that has at least three air-suspended wheel axles (2, 3, 4). The device includes a control unit and two level sensors (9, 10). The control unit detects the chassis height at the front axle (2) via a first level sensor (9) and at the forward rear axle (3) via a second level sensor (10), and the control unit calculates the chassis height at the rearmost wheel axle (4). An object of the disclosure is to protect the rear axle installation with as few level sensors as possible.

Abstract: A method for transferring an identification code from a first unit to a second unit in a vehicle is provided, where the identification code is intended to unlock an electronic security function in the second unit. The method includes steps of storing a plurality of identification codes in the first unit, checking a user's identity on a predetermined occasion, which user's identity can correspond to one of a plurality of predefined user identities with each user identity being associated with at least one of the said identification codes, and of transferring the identification code that is associated with the user from the first unit to the second unit when the user's identity matches a predefined identity. It is possible by this method to avoid having to input an identification code manually each time the second unit is switched on.