hi new to this forum so hello everyone,
recently bought a 2008 (57 plate) is220d, love the car,
the heaters aren't heating up until well into a journey when the engine is warm and the car is over 2000rpm, the engine temperature gauge is around half way but then will suddendly clime to high in the red and then the heaters work and the gauge drops to just over half and back up to high intermittently please tell me there is an easy fix!!!!!