This may be covered already somwhat in "D4 - Common Faults - Wiring Loom" and "D4 - Everything Else - Heater Woes".
In my case, I hadn't noticed anything wrong but it showed up as a fault code when the car was scanned during a routine service.
It was under warranty at the time but it wasn't expensive anyway.
I can't say I noticed any difference after it was replaced, the garage suggested that the car should warm up faster.
|