I used to work at a auto repair business next to a supermarket. The supermarket had one parking bay right at the front door. They also had some door opener or phone system that would stop any Jeep Cherokee that parked in that bay from starting. Took us a while to work out what was happening but it only affected Jeep Cherokees and only if they parked in that bay. They would crank, but not start. Push them away and all was good. If the owners asked for help politely, we'd explain what was going on with the transponder, if they ranted and carried on with " I hope you know what you're doing!!" we let their cars sit in the workshop a while and charged them $60.