I have installed the new Clifford 2-way pager alarm car starter. I was given 3 keys when I bought my X. 1 key goes into the module of the starter/alarm. The alarm is great it has an automatic kill switch if somebody tries to break into your X while its running(thats if the doors are unlocked). I love this alarm because it works up to 1/2 a mile away... and it has many options.