What's up with my Mondeo's key fob?

I have a 2008 Ford Mondeo Titanium and have two fobs - one locks and unlocks the car and engine will start when I press the push button; second fob locks and unlocks the car, but engine won't start when I press the push button and screen says doesn't recognise the key. I changed fob battery, but still the same - any idea/solution?

Aidan

Aidan Mackey (Blarney)

Jul 2013 Filed under: fault

---

Expert answer

Hi Aidan,

It sounds to me as if the second key fob has lost its pairing with the ignition system Your best bet is to bring it into a Ford dealer to reprogram. 

Shane O' Donoghue - Complete Car Advisor
@Shane_O_D