Yes,
A bad thermostat can keep the hot coolant from reaching the heater core...
also, low coolant levels or a clogged heater core can make your heat stop working.
My 2001 VW Passat is has the same problem!!
The thermostat is located behind the alternator. It sits in a hose assembly that comes from the engine. Simply trace the lowere radiator hose to the engine and you will find it.
Apparently not. He is asking about the heater core. It is a 10 hour job involving removing the dash. I think they built the car around the heater core. ugh.
I have the same issue. I have heard getting the radiator flushed might help. Otherwise look to the thermostat.
Check fuse, bulbs, and flasher relay.
The 2001 Volkswagen Passat has 20 valves.
The 2001 Volkswagen Passat has a 5-speed manual.
The 2001 Volkswagen Passat is a gas-powered vehicle.
The 2001 Volkswagen Passat has an inline 4 engine.
The 2001 Volkswagen Passat's turning circle is 37.4 ft..
The height of the 2001 Volkswagen Passat is 4 ft. 9.6 in. (57.6 in.).
The 2001 Volkswagen Passat is 15 ft. 4.1 in. (184.1 in.) long.