Does the heater in an MB work differently than the one in most other water-cooled cars? I noticed comments here about heat coming through the vents, but I thought that those would only duct air passing through a heat exchanger that is fed byt the car's water cooling system. Are Benz's different in that regard or am I just missunderstanding the comments?

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OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles