OK, another fbh question, looked through a few old threads but did not see the answer is was looking for.
Moved the car out of the garage yesterday to give it a clean after a trip to York and back earlier in the week, no issues, starting fine as always, cleaned car and put back in garage.
This morning went to get it out of the garage and I,m sure if heard the fbh running, tried starting and the battery was flat. My question is, will the heater start without the ignition being on providing the temperature is low enough?.
One other thing is that I never lock the car when it's in the garage,,,,, would this allow the heater to operate.

I'm assuming the noise i heard was the heater running, or is there something else it could be.

I did manage to boost the battery for an hour and the car started fine 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

Update, started fine this morning, locked the car for a change last night, but temp only came down to 10 degree so fbh probably old not have started anyway. 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it