A friend of mine who owns a '53 plate black Clio 172 has no interior heaters. They used to stop and start (when turned on) and now they don't work at all. He has taken the car to Renault and they said that it's a "common problem" and that it's a dash out job as the motor has to be replaced and it will take about two days. Is this correct because it seems anything that goes wrong on a car nowadays is a "common problem".