I'm not sure if it can be retrofitted.
But I think it is a good idea that the car doesn't come standard with that feature. I, for one, would not want it, and did not include it with my car. So by making it an option those who want it can get it, and those who don't, don't have to have it.
This. In SPADES.
, a little primer for you:
- Entry and Drive's generic term is 'passive keyless entry' because the operator doesn't have to press a button to enter the car. The standard fob is 'active keyless entry' because the operator must press a button to enter the car.
- Passive keyless entry fobs are always emitting a very faint NFS signal. Active keyless entry system fobs only emit its (somewhat stronger) signal when a button is pressed.
- Some thieves have access to a transponder device that can capture, descramble, amplify, and relay the NFS signal of a passive keyless entry fob from up to 300 feet away. Basically that means if the thief is within that range of both your fob and your car, he can break in with no signs of forced entry.
- I live in a condo building that has has several car burglaries in the past two years using such a transponder. Basically, thieves opened cars while passive keyless entry fobs were sitting in the owners' condos
, then quickly ransacked the interior.
- I've purposefully ordered my last two cars (My current 718 and a BMW 2 Series) without passive keyless entry because of the security risk it represents. My car has not been broken into in my condo, or anywhere else.
Bottom line: Passive keyless entry is not secure. Yeah, it's convenient, but I'm quite happy to press a button and insert/turn the fob in exchange for the security of my car's interior, at the very least -- and in Europe, thieves have been known to steal whole cars using versions of this device.