Vehicles fitted with an HDi engine may be
fitted with a heater. When the engine is at
idle or the vehicle is stationary, it is normal
to notice a high-pitched whistling noise and
a slight emission of smoke and odour.
Rear ventilation
Coolant circuit heater
This is an additional and separate system
which heats the Diesel engine cooling
system to make starting easier.
It improves the demisting and defrosting
performance.