I have a Volvo V40 (2016) D2 which I have just updated the satnav on. Can anyone explain why both before and after the update the satnav didn't/doesnt recognise some UK postcodes?. My home postcode is one of these and that postcode has been in existrance for the last 40 years at least! I find that approx 10-20% of the postcodes I enter are not recognised as 'existing' and cannot be selected