How many days can the X sit w/o battery dying?

[Repoman]

3 days is the most I've gone so far. Anything close to 4 or 5 and I might as well go ahead and break out the battery charger.

[sethro]

My X5 sat for about a mouth and half started up like a champ.

[Repoman]

Everytime it breaks and I order parts, it usually takes 3-5 days to get the parts. Everytime I start to work on it . . . dead battery. Battery is only a year old and I fully charge it everytime if find it in this state. I have been careful to check to see if anything was left on like dome light, cell phone charger, etc. and nothing ever found. I don't even set the alarm since it is sitting in the garage. Something is juicing it while it sits . . . I guess that will be my next X repair.

[Ahmed303]

Do you have an aftermarket alarm system? They are the common causes of drain. The weather also is a factor. AFAIK, most bmw will go in the sleep mode after 15 minutes and the battery drainage should be minimal and should hold charge for at least a couple of weeks if not much longer.

[Repoman]

Originally Posted by Ahmed303

Do you have an aftermarket alarm system? They are the common causes of drain. The weather also is a factor. AFAIK, most bmw will go in the sleep mode after 15 minutes and the battery drainage should be minimal and should hold charge for at least a couple of weeks if not much longer.

No aftermarket anything . . . vehicle is completely stock. No alarm or any kind of electrical additions of any sort other than cell phone charger but I have developed a habit of removing it while not in use or if vehicle is off. Weather has been relatively warm lately . . . in the low 60's at night and high 70's in day. Haven't felt a chill in the air for weeks now. Something internal has to be draining it. I have noticed that on day 4 that only one taillight and only one front sidemarker light comes on by themselves and stays on until battery is completely dead. These lights are what I use as the sign to break out the battery charger.

[sarb]

my x sat for about 3 months and still started on 1st try.

[Ahmed303]

Originally Posted by Repoman

No aftermarket anything . . . vehicle is completely stock. No alarm or any kind of electrical additions of any sort other than cell phone charger but I have developed a habit of removing it while not in use or if vehicle is off. Weather has been relatively warm lately . . . in the low 60's at night and high 70's in day. Haven't felt a chill in the air for weeks now. Something internal has to be draining it. I have noticed that on day 4 that only one taillight and only one front sidemarker light comes on by themselves and stays on until battery is completely dead. These lights are what I use as the sign to break out the battery charger.

I see. In that case my first assumption will be that there is a shorted ground somewhere. based on the side-marker issue you stated you may want to check the wiring at the rear tailgate hinges and the hood hinges. I had a similar symptom on my 850 and it was the broken ground at the trunk hinge.

Maybe worth a look? At least I'd check it if it was my car.

[Ahmed303]

BTW. How old is your battery? Have you had it taken out of the car to test it?

[Michelle]

Do you have bluetooth?

[Repoman]

Thanks for that tip Ahmed303. I will check those two areas for wire damage.

Battery is 1 year old. I had it charged and tested by Autozone's fancy machine about 4 months ago when my alternator went out and battery tested good. When alternator went out and vehicle died it also had the one taillight and one front sidemarker light on. I always thought that was the X's way of telling me . . . "I'm gonna need a battery charge buddy!"

No bluetooth either. Nothing fancy in vehicle either. Just a 3.0 with only sport package. Doesn't even have heated seats.