Mazda 6 '55 plate diesel - Starting problems with key - Robin the Technician

Hi,

My Son has a problem when starting - when he inserts the key and turns to start, all he gets is a red key light on the dash that flash's. If he tries again, sometimes it will start without problems - other times he has to remove the key and try again and it works.

I did think that maybe the battery needed changing in the plip but it seems to unlock the car at quite a distance, so i think the battery is ok.

Anyone out there have any idea what it could be?

Thanks

Robin the Technician