DrewE wrote:
What's your plan B if the mechanical key breaks? Or if the chip in the mechanical key breaks?
A key fob is no different technology than a chipped key; it just doesn't have the mechanical pins and tumblers or equivalent mechanical doodads to get crudded up, break down, wear out, etc. Instead, you have a much more mechanically robust (or at least potentially more mechanically robust) pushbutton. The chances of it breaking down are lower than a mechanical key.
On most if not all systems, if the battery in the key fob dies, you can still use it to start the vehicle through passively powered RFID technology; it just needs to be placed in a specific spot in the vehicle for the communication to work (rather than being anywhere in your pocket or whatever). If the vehicle battery dies, of course, you aren't starting your engine without help no matter what the key setup looks like.
been driving for nearly 55-yrs. never had a key break. never. if the chip goes bad a call to the wife results in a key. not a call to a tow and a $100+ tow bill.