Fuse problem

I have a p reg p38 diesel it flashes on dash that fuses 12/13/14/15 are not working but fuses are not blown, only 3 windows work/ only the passenger side front and rear lights work and not drivers side also central locking only works on front not back or tailgate, any help much appreciated, thanks

first things I'd check is healthy supply to fusebox, we are talking about the drivers seat one. Secondly had crazy electrical faults and 90 % was bcem connector corroded. cleaned it and it's all better (electrical contact cleaner aerosol)

thanks, sorted it now, one of the big fuses had blown in under bonnet fuse box