This has always worked on every Mopar I've had. Get in, close door, buckle seat belt, turn ignition to on, but don't start. After seat belt light turns off, unbuckle and buckle seat belt three times within 10 seconds, ending with it buckled. Should hear a single chime. That's it. I find that going slow and taking most of the 10 seconds yields better results. May have to try a few times to get it.