V 70 Mj. 98 bought without hand transmitter ZV, incorporated used parts from other moose?

Hello, my 1998y XC got last year with three (almost not sticky) keys, but unfortunately without remote controls for the central locking. The previous owner had disposed of them, because they did not work anymore. Now I had thought to buy one or two new ones with the friendly one, but shy away from the costs. Besides the approx. 130,– for a hand transmitter there are also costs for the learning, and the journey to the nearest CONSUCHABLE Volvo partner is r And then there is still a (my assessment nch low) residual risk that another part of my ZV (receiver) is broken. Could one possibly use a complete, used unit from a butcher? -So a functional unit that worked before incl. receiver? -Or does something have to be learned at the friendly one? Greetings Chris