Keyless entry not working properly

[Auchers]

My keyless entry on my 2021 Karoq SE L is all of a sudden only working on one door and not unlocking them all as it did before.
Is there a simple idiot-proof way of restoring it so that they all unlock as they should at the touch of the door handle?

[kodiaq]

Probably a flat battery in the key fob.
Very easy to replace.......

Take your pick from these suppliers.
https://www.ebay.co.uk/sch/i.html?_from ... q&_sacat=0

[Auchers]

For some unexplained reason it had switched off 'all doors locking' in the settings menu. Sorted now.