Morning all I am a new member desperately seeking help/guidance. My car has been in a garage for nearly 2 weeks with a coolant leaking issue. The garage replaced the oil cooler gaskets/union 2 months ago following an earlier leak, but the problem persisted. They have now replaced the water pump and have said the heating matrix is blocked and requires replacement. A block test did not reveal any issue with the head gasket. I would be very grateful if anyone can confirm what the heating matrix replacement should cost. I understand it can be accessed via the driver's side footwell rather than removing the whole dash.