Battery died/ codes

[BMW335i07]

Battery died, 2nd time it happens
First time I left the key in the ignition for about 20 min and it died,

2nd time I was washing the car, keys where not inside car, only thing I did was open and close the door and the side lights would turn on and I have them set for 40sec, I did it about 5x give or take,

My question is, is that enough to kill my battery?

Also when that happen I had 2 coed pop up on my screen,
1) battery low
2) tans malfunction

Is it because of the battery that died?

Need help with this

[wildcatcrazy]

Time for a new battery.

[Sstamand87]

Time for a new battery.

Yep, and don't forget to register that new battery.

[cheech1]

Battery died, 2nd time it happens
First time I left the key in the ignition for about 20 min and it died,

2nd time I was washing the car, keys where not inside car, only thing I did was open and close the door and the side lights would turn on and I have them set for 40sec, I did it about 5x give or take,

My question is, is that enough to kill my battery?

Also when that happen I had 2 coed pop up on my screen,
1) battery low
2) tans malfunction

Is it because of the battery that died?

Need help with this

May not be enough to kill a good battery, but plenty enough to kill a bad one. Have the battery tested.

[cochise325]

What year is the car? How many miles on it? Battery is the original? Alternator is the original?

[Chris212]

Tans malfunction???? E90 throw funky low voltage codes that can be disregarded... Check neg terminal should be date stamped... Replace and register as others mentioned set time date drive bout 2 mile abs/dsc n steering angle lights should clear themselves... Keeping car awake drains battery I.e opening n closing doors

[BMW335i07]

Just had the battery tested and it bad, I need to replace it,

Quoted 380 installed. Any other options on battery? Or has to be bmw dealers only

[cochise325]

$380 is typical. For that you get a good oem battery that is properly sized for the space it fits in, and then it gets registered so your car knows it has a new battery.

[BMW335i07]

That being said, was the trans malfunction code because of low voltage on battery?

[Chris212]

Wow that's a bargain... That's battery w/reg... Lol my shop charges like 500.$... E90 throw really weird codes when the system reads less than 9v.. Unless u feel it smell it taste it then there's nothing wrong... Do not throw a autozone type battery init that's begging for the lord to smite u down while under w.o.t.... Interstate makes a decent agm kinda pricey.. Research battery reset procedure in forums... Other than that to be safe make a techs day... Battery w/reg. pays tech 1.5fru takes about 40 min start to finish... If he's superman (me) done in 30m double check price make sure battery w/registration

[cochise325]

If it was a white battery then it is less expensive than the black battery. That is why I asked about the model year. My 2006 325xi Sportwagon had a white lead acid battery and that is what it got replaced with. My cost came in at around $350, with battery coming from BMW dealer, then indie shop registering it for me for less that $50.

[Demi330BMW]

i just replace my battery last week at the dealer, cost me $380 everything. i have a 2006 bmw 330xi