Hazard problem

Hello everyone so I have slight problem with my disco aquestion that's probably been ask a thousand times

Hazard light flashing intermittent before they start to flash I can hear the central locking doing something

Yes I've check the inerter switch in the engine bay

Turn her off start her up they go off couple mins later back on

Central locking works fine with the key

Any suggestions appreciated

Ant

Hi, the first suspect in such cases is the interior fusebox

Do they turn off , or just stay on despite trying turn it off , does the radio , nav screen or heating controls turn off and on etc ?