RCZ 200bhp engine takes ages to warm up and internal heater is not working

[JChat]

Hello I have RCZ 200bhp engine takes ages to warm up and internal heater is not working at all. Once engine is up to temp it maintains it with no overheating issues. Cabin heater does not produce any heat at all. Any suggestions regarding possible fault would be welcome.

 

[Pedro]

The heater matrix core could be blocked which means no heat inside the cabin

 

[DoubleChevron]

thermostat is stuck open by the sounds of it.... People often remove these thinking the car will run cooler which is a dumb idea! Check the car doesn't have one of those exotic electronic thermostats. It it fails its entirely possible it would starve the heating system of coolant.