I disagree. I was having issues with my heater taking a long time to heat up. I had to have my battery replaced and my heater functioned normally after that.
Provided the heater is of a low wattage it should not affect normal running of the car
That the battery in your car is low and needs to be charged
Low coolant and a clogged heater core are possibilities.
yes.
yes
Definitely not. There is nothing electrical there. But hydraulics run well only when you have your engine on. So: as long as you have your engine on you have full brakes.
Yes it can. Especially if the battery has a low charge to begin with or it is an old battery.
it might be because your car battery is low or dead
No, if it is low of electrolyte just add distilled water.
Low on coolant, stuck open thermostat, plugged heater core, faulty temperature blend door,
Low coolant. If the coolant is low then the heater core is not able to transfer heat in to the car.
low on coolent