Hi - I have a 15 plate H3L3 Transit Trend just came out of warranty last June - starts fine when its been sat a few hours. You do a journey, stop (say for fuel) so a few minutes. Get back in, and when starting comes up with Immobilser Active - Check Handbook.
Had a locksmith take a look and his diagnostics shows a fault of BCM loosing communication with Instrument Panel.
You leave it alone for 5-10mins and chances are it will start perfectly.
Is this a key issue or something else?