My 928 has an aftermarket central locking system. There is no brand or name of manufacturer on it. I only got one key fob with the car. It has the same number as the control box and opens the doors. I managed to locate an identical fob with the same pcb but this type has a rolling code and I dont know how to program it in order to have a spare key fob in case I lose the only one that works. My keys wont open the doors !! Does anyone recognise this system and know either how to program another key fob or what brand the control unit might be ?

 

you might want to delete the pictures of your key as thats how they make copies.
No ideas on the alarm,
But I would remove it from the car

 

If it's just the remote locking you want to preserve and not other functions of an alarm system, you can buy a complete remote lock kit on Amazon for under $50. Use the actuators already installed in your car, figure out which wires you need from the current control box and hook up the new one. Problem solved - 2 new remotes and a working system.

 

Thanks Petza914. That sounds like a good option. Would you recommend any particular brand ?

 

Sorry, although I'm doing this same thing with mine, I just ordered the kit Monday. I hooked up the vacuum lines the other day and they didn't work, which is why the PO probably had electric actuators installed in the doors, or maybe they were part of a security system that's no longer there. Once I cleaned all the grease and gunk from the mechanisms, and hooked up test leads to a battery, I was able to get the actuators working to open and close the locks. I just bought a remote lock kit off eBay (out of NJ I think) and will hook up that brain to my existing actuaentries and an internal lock button I'll wire, and then I'll have keyless entry and a couple spare actuators. Yours will be even easier since your wires are already going to the existing brain.