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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 08-25-2013, 11:00 PM
crowtheartist crowtheartist is offline
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Post Dead Battery questions: '06 325i

Hi.
I'm coming home from deployment. I don't KNOW if the battery is dead, since the car is in storage at the moment. But in case it is, I've read a couple of things, and want to clear some things up.

1. Do YOU think the battery will be dead?
-I'm not exactly sure HOW long it has sat without getting started, but by the time I come home, my guess will be 4 1/2 months.

IN CASE IT IS DEAD:

1. Is this a DIY?
- This is my 3rd beemer, and I can get around them easily. But I DID just buy this car, so, I haven't had a chance to explore it. I am pretty handy with tools, and unless the difficulty of the DIY is "Unless you're a mechanic, do NOT attempt.", I'm pretty sure I COULD do it myself.

2. I have read that the battery needs to be "registered"? I have no problem with this, I have a Mech who's a BMW specialist and can do it for cheap, HOWEVER -
> Can I switch the battery out MYSELF, and drive to his shop the same day to have it registered?? Or should I not move the car AT ALL if I switch the battery out.

Any other suggestions or thoughts on this will be greatly appreciated.

Car's a 6spd Man, 06 325 i.

Thanks.
Ronnie.
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  #2  
Old 08-25-2013, 11:24 PM
aleks001 aleks001 is offline
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Location: Brisbane, Australia
 
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Quote:
Originally Posted by crowtheartist View Post
Hi.
I'm coming home from deployment. I don't KNOW if the battery is dead, since the car is in storage at the moment. But in case it is, I've read a couple of things, and want to clear some things up.

1. Do YOU think the battery will be dead?
-I'm not exactly sure HOW long it has sat without getting started, but by the time I come home, my guess will be 4 1/2 months.

IN CASE IT IS DEAD:

1. Is this a DIY?
- This is my 3rd beemer, and I can get around them easily. But I DID just buy this car, so, I haven't had a chance to explore it. I am pretty handy with tools, and unless the difficulty of the DIY is "Unless you're a mechanic, do NOT attempt.", I'm pretty sure I COULD do it myself.

2. I have read that the battery needs to be "registered"? I have no problem with this, I have a Mech who's a BMW specialist and can do it for cheap, HOWEVER -
> Can I switch the battery out MYSELF, and drive to his shop the same day to have it registered?? Or should I not move the car AT ALL if I switch the battery out.

Any other suggestions or thoughts on this will be greatly appreciated.

Car's a 6spd Man, 06 325 i.

Thanks.
Ronnie.
1. Battery might be dead, you should have disconnected it before you left.

2. Definitely DIY, google it, there's tones of examples on how to do it, very simple.

3. You can definitely change it and then take it to your mechanic to register it. You can drive it to the shop a week later and I doubt you would do much if any damage.
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  #3  
Old 08-25-2013, 11:24 PM
ctuna ctuna is online now
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You can do it yourself.

You can do it yourself.
1) The top of the battery is covered in a distribution block just make sure
everything gets back to the same place, meaning the wires. There are Diy procedures . You might try putting a slow charge on the battery first.
The attachment points for charging are under the hood. Try to match the amp hour rating
it probably is a group 49/h8. Do not use a battery back up device when changing its known to blow fuses
there is not much info that is lost anyway just trip computer data and the date.
2) You can drive it for awhile without registration it just effects the longevity of the
battery .
3) Its a good idea to get a battery tender such as a ctek 3300 if the car sets for long
periods of time or only goes on short drives.

DIY procedures can be found here

http://www.e90post.com/forums/forumdisplay.php?f=16

If the transmission seems a little notchy try Redline D6 Fluid it worked for me.

Also google Mike Miller BMW for the old school maintenance schedule and some interesting history
on BMW maintenance.

Or you can google them .

Also a coding kit will allow you to register the battery do diags and other cool stuff.
http://www.e90post.com/forums/forumdisplay.php?f=368

Last edited by ctuna; 08-25-2013 at 11:36 PM.
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  #4  
Old 08-25-2013, 11:33 PM
crowtheartist crowtheartist is offline
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Alright, thanks so much guys.

> Reason why I didn't disconnect it was because I was supposed to have someone take care of my car, and they ended up being a worthless, lazy piece of s$#$%. I know better, but under the circumstances, it was better to get my keys back.

> Yeah, I wasn't planning on being lazy, and not get it registered until I felt like it. I just wanted to know if I can change the battery out at the Storage Place, and drive the car to the shop/dealership to get it registered. That way, I don't have to tow the freaking car. lol
So, good to know I can.

Awesome, thanks so much for the help guys.

-Ronnie
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  #5  
Old 08-25-2013, 11:58 PM
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  #6  
Old 08-26-2013, 04:34 AM
ramblinman ramblinman is offline
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If the battery is dead, you should be able to jump start it. However, the engine will shut down as soon as you disconnect the jumper cables. With any modern car, the engine computer is designed to shut off the engine if it detects the battery voltage is too low. Alternators can't recharge a dead battery. If that happens, you can either get a new battery or use a battery charger to recharge the dead one and then see if the engine will run. If the battery is completely discharged, it may not hold a new charge. You'll just have to see what happens. BMW's have a constant drain on batteries even when the system is off. My son deployed twice for seven months with 3 different cars and never had a problem starting them when he returned. Mike Miller of the BMWCCA says a BMW battery won't work even after a week without running it. He recommends using a Battery Tender charger any time you leave the car for a week or more without starting, especially with an older battery. If you do replace the battery, use exactly the same specs or you will have to code the DME to the new specs and go through the registration. They are two different processes.
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  #7  
Old 08-26-2013, 06:49 AM
crowtheartist crowtheartist is offline
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Exclamation

I see, I see.
So, bottom line is, MOST LIKELY, the battery will be dead. I'll just get a new battery, install it, and get it registered the same day. Sounds like a plan.

Hey, follow up question, if you can answer:

The tires. Now, I've heard different ranges of questions, from "they'll be fine" to "they'll be completely deflated."

The tires are BRAND NEW, I literally bought them about 3 weeks before I left the states. And again, the car has been sitting for 4 months. The last time it was started, it was also driven out the lot a couple of laps.
The car is in indoor storage, but without AC. And this is in Texas. The weather hasn't been that hot, but it's been hot enough.

(I know, it should have been on jacks, or tires taken off. I've already explained why none of these precautionary measures were taken.)

What do you think? The whole thing is a mystery because no one has seen the car in 4 months. For all I know, it's not even there, and aliens beamed it up and took it away.

What do you think about tires??
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  #8  
Old 08-26-2013, 08:06 AM
ctuna ctuna is online now
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You could check the battery with a voltmeter

You could check the battery with a voltmeter.
I would try to charge it before doing anything.
I couldn't jump my e46 when the battery went dead after 8 years
and my mechanic tells me this isn't any different.

Last edited by ctuna; 08-26-2013 at 08:08 AM.
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  #9  
Old 08-26-2013, 05:34 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
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Mein Auto: 2006 BMW 325i
Quote:
Originally Posted by crowtheartist View Post
I see, I see.
So, bottom line is, MOST LIKELY, the battery will be dead. I'll just get a new battery, install it, and get it registered the same day. Sounds like a plan.

Hey, follow up question, if you can answer:

The tires. Now, I've heard different ranges of questions, from "they'll be fine" to "they'll be completely deflated."

The tires are BRAND NEW, I literally bought them about 3 weeks before I left the states. And again, the car has been sitting for 4 months. The last time it was started, it was also driven out the lot a couple of laps.
The car is in indoor storage, but without AC. And this is in Texas. The weather hasn't been that hot, but it's been hot enough.

(I know, it should have been on jacks, or tires taken off. I've already explained why none of these precautionary measures were taken.)

What do you think? The whole thing is a mystery because no one has seen the car in 4 months. For all I know, it's not even there, and aliens beamed it up and took it away.

What do you think about tires??
You're tires should be fine, I would be supprised if they aren't. I went on holidays for 3 months and mine didn't drop even 1 psi. Just check the pressure and enjoy, tires are pretty resilient.
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  #10  
Old 08-26-2013, 05:38 PM
crowtheartist crowtheartist is offline
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Mein Auto: 06 325i e90
Exclamation

'One more questions.
On the autozone website, it has this:

- STOP! DO NOT INSTALL THIS BATTERY! Vehicle computer system must be reset. Use the shop referral program and recommend professional installation

What does this mean?? Is this talking about the "Registering"?
This is the first I've heard of "System must be reset".
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  #11  
Old 08-26-2013, 05:40 PM
aleks001 aleks001 is offline
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Location: Brisbane, Australia
 
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Mein Auto: 2006 BMW 325i
Quote:
Originally Posted by crowtheartist View Post
'One more questions.
On the autozone website, it has this:

- STOP! DO NOT INSTALL THIS BATTERY! Vehicle computer system must be reset. Use the shop referral program and recommend professional installation

What does this mean?? Is this talking about the "Registering"?
This is the first I've heard of "System must be reset".
Just ignore it, we've all done here multiple times and it works fine, they are just trying to scare people into going to them. Just change it and take it to your mechanic to register it, end of story.
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  #12  
Old 08-26-2013, 05:53 PM
crowtheartist crowtheartist is offline
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haha. alright. I like that answer. Thanks.
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  #13  
Old 08-26-2013, 06:57 PM
ctuna ctuna is online now
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On the subject of tires

Supposedly they develop flat spots . On the other hand my next door neighbor
went to France for 6 months and had no problems with his Suby.
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  #14  
Old 08-26-2013, 11:05 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
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Quote:
Originally Posted by crowtheartist View Post
haha. alright. I like that answer. Thanks.
At the end of the day you might not even have to replace it. If the car starts, the alternator will eventually charge the battery back up. Just get a multimeter for you're peace of mind and test that voltage is around 12. You can also try charging your battery instead of replacing it.
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  #15  
Old 08-27-2013, 12:02 AM
crowtheartist crowtheartist is offline
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Wink

Yeah, I mean, hopefully, that's what I'm wishing for. That I'll just get in my car, and the tires might be a little low, but the car will start right up.
I mean, who wants to go to freaking Afghanistan, and come back home to your brand new car, and have to fork out 300 bucks just because some idiot "friend" was too lazy to watch your car?
But if this, miraculously, happens it'll only re instill my faith and love for the BMW brand.

-R.
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  #16  
Old 08-27-2013, 06:11 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
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Mein Auto: 2006 BMW 325i
Quote:
Originally Posted by crowtheartist View Post
Yeah, I mean, hopefully, that's what I'm wishing for. That I'll just get in my car, and the tires might be a little low, but the car will start right up.
I mean, who wants to go to freaking Afghanistan, and come back home to your brand new car, and have to fork out 300 bucks just because some idiot "friend" was too lazy to watch your car?
But if this, miraculously, happens it'll only re instill my faith and love for the BMW brand.

-R.
I have a feeling that more then likely everything will just work when you come back, don't stress. BMW batteries are really strong.My BMW on the other hand will be my last one. Don't want to hijack you post though, I've already had my rant on this forum :P
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  #17  
Old 08-27-2013, 06:17 PM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by crowtheartist View Post
1. Do YOU think the battery will be dead?

Well, that's hard to say w/o testing.

Isn't it?

Here y'go laddie....video; links below if required.
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