The multi-purpose rear window aerial combines aerials for remote operation of the central locking, optional auxiliary heating and navigation systems, and the aerial amplifiers for the radio and TV, all in one unit. The various aerials, which offer optimum reception and transmission quality, are integrated into the rear window. Radio stations and TV channels are picked up by an invisible film with a printed aerial conductor. On the upper section of the rear window are the aerials for receiving signals from the radio remote control for operation of the central locking or auxiliary heating.