I had a remap the other day from pro Steve and since, the coolant level light flashes every so often very briefly like this morning. Simple case of topping it up? Or draining and refresh the fluid? I've done oil changes and loads of other stuff but never a coolant top up!
Yeah just top it up. Though as winters coming it might be worth getting an antifreeze tester to check you've got a strong enough mixture.
About 2 quid in halfords.
rumore has it we are in for a "harsh" winter so consider more than 30% antifreeze strength..........we have 40% in ours as we live quite high up in the hills....which is probably why it rains so much here.....