I have Mondeo TX petrol 2500 - key less / push start function been fine since purchase (3 years) - changed battery in key fob continued work fine for couple of weeks all of a sudden no long works as advises 'key not detected' and have to now hold the key adjacent key area beneath steering wheel - tried the spare key same issue occurred.

How do I re-align the key to the car to work as designed>

cheers