Re: Oh dear!
> it was my understanding that the buttons to lock/unlock the car were battery operated, but that the other functions of the fob were passive RFIDish
At least in my 2008-vintage Mondeo, the engine immobiliser was driven from the RFID tag in the remote, but the alarm was very much not.
Oddly, there was a "keyhole" in the steering wheel column where you could insert the remote in the event of any issues. Didn't seem to make a difference to the alarm though, and TBH, I suspect it was there more as a placebo than anything else; at best, all you were doing was bringing the RFID tag closer to the sensor...
Biting the hand that feeds IT
