Did you recently bought the car ? Did it work properly last winter ? What do you mean by the fan being weak ? Not much air coming off the vents? Does it blow more air when the AC is on ? Yes i just got the car about 10 days ago and i wasn't able to test the heat because it was about 30c when i boug...

Of course it’s the first cold morning of the year and I go to test my heater and it is super weak. The fan is very weak when set to heat but blows just fine on ac. It also takes a long time to heat up. Any idea what this may be?