Starts then immediately stalls

What led to starter motor replacement? Are there any warning list flashing or illuminated? Have you tried a different key to start the vehicle? It sounds more like an anti-theft device, but I'm not certain. It will be necessary to have a local shop near you perform some testing to see what I happening to your Jetta. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops