[aphhpa]

I just picked up this 2013 335i msport from private sale. It has 61k miles on it. Previous owner says he never had an issue but when I got the car home, i started getting "battery discharged while off" warning. It has been about 0 degrees for days. At one point it was completely dead. After I jumped it and got it going, now the blower doesnt work for ac/heat. I do not know if they are connected but that is when it happened. I noticed when i turned the car off and lock everything up, the push button to start stays lit. Not sure where to begin. Anyone had similar issues?

[Billfitz]

Originally Posted by aphhpa

Anyone had similar issues?

There are at least six open threads on the subject of cold weather and batteries.

[bimmer456]

Originally Posted by aphhpa

I just picked up this 2013 335i msport from private sale. It has 61k miles on it. Previous owner says he never had an issue but when I got the car home, i started getting "battery discharged while off" warning. It has been about 0 degrees for days. At one point it was completely dead. After I jumped it and got it going, now the blower doesnt work for ac/heat. I do not know if they are connected but that is when it happened. I noticed when i turned the car off and lock everything up, the push button to start stays lit. Not sure where to begin. Anyone had similar issues?

Needs a new battery. The start button staying lit for a few minutes after turning off the car and locking is normal. Note that the battery has to be coded to the car after installation so the ECU knows it's a new battery and the type.

[Billfitz]

Or not. The symptoms are those of a battery that's not adequately charged, which may be due to the battery needing replacement, but at 0F more likely indicates the need to use a battery maintainer, as explained in great depth in all the other threads on the subject.

Also, the blower won't push much air if the climate system is set to auto until the car warms up. It knows enough not to waste energy blowing cold air.

[bimmer456]

Originally Posted by Billfitz

Or not. The symptoms are those of a battery that's not adequately charged, which may be due to the battery needing replacement, but at 0F more likely indicates the need to use a battery maintainer, as explained in great depth in all the other threads on the subject.

Also, the blower won't push much air if the climate system is set to auto until the car warms up. It knows enough not to waste energy blowing cold air.

It blows warm air even if the engine is cold as it uses a separate heater. Best to have it checked out as the spec is that there should be sufficient charge even at 0 degrees Fahrenheit if the car is being driven regularly to keep the battery charged. It is a good idea to use a battery maintainer which costs around $60. Since you brought it used I would have it checked out if you're getting an error message.

[DDD31]

The car will automatically disable high current users (the heater blower for one) to protect the battery when the charge state of the battery is low (which is magnified in very cold temps). I had the same problem on one of my past bmws that had an older battery that was at the end of its useful life. Once I replaced the battery, problem went away regardless of how cold it got. I would definitely have the battery checked or replaced.

[Billfitz]

Originally Posted by bimmer456

It blows warm air even if the engine is cold as it uses a separate heater.

Let us know how your heat is the next time it drops to -10F in your neighborhood.

[HighlandPete]

Originally Posted by bimmer456

It blows warm air even if the engine is cold as it uses a separate heater.

Do you all get the winter package with fuel heater in the USA?

We don't even get the option in the UK.

Surely if you have a low battery condition, the auxiliary heater (if you have one) won't function the same way, if consumers are being shut down?

[jeffc83]

As an aside, I took note that it took 3-4 minutes for warm air to come from the vents and heat to come from the seats when the temp was 1 degree F here. It never seemed to take more nor less time in these temps and I'm quite satisfied with that. (-5 to +10 F) 6 minutes plus just to get heat out of my Cadillac XTS seats and that was when the ambient temperature was 15-20 F!

[jeffc83]

Originally Posted by HighlandPete

Do you all get the winter package with fuel heater in the USA?

We don't even get the option in the UK.

Surely if you have a low battery condition, the auxiliary heater (if you have one) won't function the same way, if consumers are being shut down?

I don't have this package and when going to build a new one, I didn't see any options for winter packages, just heated seats, XDrive, etc.. Maybe it's available in Canada but I haven't seen it here yet in the NE US.

[bimmer456]

Originally Posted by HighlandPete

Do you all get the winter package with fuel heater in the USA?

We don't even get the option in the UK.

Surely if you have a low battery condition, the auxiliary heater (if you have one) won't function the same way, if consumers are being shut down?

It just comes standard I guess here