Originally Posted by Brian.

The Immo only looks at the key in the ignition (RFID, so the system reads a number over radio frequency), if the key is one it recognizes, the vehicle starts. If it doesn't recognize, it won't start. There is nothing to "avoid" or "do" on your part beyond having a key that the car recognizes.


If you have a Master key, one that can program others, make another ASAP and put it in a safe. Then make 2 more keys (master or sub, makes no difference IMHO) to use as your normal key, spouse key and normal backup. You really never want to be caught without a master key, unless you just like throwing good money after bad for replacement keys.