[Mrmerlin]

if you getting low coolant i would suggest to replace the heater control valve and the short hose as well as the coolant bottle bottle cap, this should cure most leaks. usually a light coming on during hard starts is a low fluid.
you might consider adding fluid to the washer bottle,
top up the oil ,
and the coolant.
Also check the E brake connection under the hand brake lever ( single brown wire to switch)it can work loose and cause a temporary light